Exploring Extended Service Agreements for Mobile Home AC Units

Exploring Extended Service Agreements for Mobile Home AC Units

Importance of Selecting the Right Units for Upgrades

When it comes to maintaining comfort in a mobile home, the air conditioning unit is one of the most critical components. Mobile homes often face unique challenges due to their structure and location, making a reliable AC system indispensable during sweltering summer months. To ensure these units function optimally, regular maintenance is crucial. Furthermore, exploring extended service agreements for mobile home AC units can offer peace of mind and additional benefits that safeguard against unexpected breakdowns.


Regular maintenance for mobile home AC units is vital for several reasons. Properly sealed ductwork prevents energy loss in mobile home HVAC systems hvac unit for mobile home wall. First and foremost, it ensures efficiency. Over time, dust and debris can accumulate in an AC unit's filters and coils, reducing its ability to cool effectively. This not only leads to discomfort but also higher energy bills as the system works harder to maintain desired temperatures. Routine cleaning and inspections help prevent such inefficiencies by keeping the system clean and running smoothly.


Moreover, consistent maintenance prolongs the lifespan of an AC unit. Regular check-ups allow technicians to identify potential issues before they escalate into costly repairs or complete system failures. For example, identifying a minor refrigerant leak early on can prevent significant damage down the line. By investing in routine upkeep, homeowners can avoid premature replacements and extend the life of their current systems.


Safety is another compelling reason for regular maintenance. Faulty AC units can pose risks such as electrical fires or gas leaks if not properly inspected and serviced. Ensuring that all components are functioning correctly minimizes these hazards, protecting both the home and its occupants.


Given these benefits, many mobile homeowners are considering extended service agreements as an additional layer of protection for their AC units. These agreements typically cover routine maintenance visits along with specific repair services should any issues arise within the contract period.


One significant advantage of extended service agreements is cost predictability. Instead of facing unexpected repair bills when something goes amiss, homeowners pay a fixed fee upfront or through manageable installments over time. This financial planning aspect allows for better budget management while ensuring that essential services are always covered.


Furthermore, extended service agreements often provide priority scheduling with service providers. In peak seasons when demand for repairs surges, those with service contracts may receive faster response times compared to non-contract customers-a valuable benefit during a heatwave when every minute without cooling feels like an eternity.


In conclusion, regular maintenance of mobile home AC units is essential not only for efficiency and longevity but also for safety reasons. Exploring extended service agreements offers additional advantages by providing financial predictability and priority access to services when needed most. Together, routine care paired with strategic planning via service contracts ensures that mobile home dwellers remain comfortable no matter how high temperatures climb outside their doors.

In the evolving landscape of homeownership, mobile homes have carved out a unique niche, offering flexibility and affordability to many. However, like any other residence, they come with their own set of maintenance challenges. A crucial component that often requires attention is the air conditioning unit. Given its importance in ensuring comfort during sweltering summer months, understanding extended service agreements for mobile home AC units becomes essential.


An extended service agreement (ESA), commonly referred to as an extended warranty, is essentially a contract that extends beyond the standard warranty offered by manufacturers. This agreement provides repair and maintenance services for AC units over an agreed-upon period. The primary purpose of such agreements is to provide peace of mind by safeguarding homeowners against unexpected repair costs after the original manufacturer's warranty has lapsed.


One significant benefit of ESAs is financial predictability. Repairs or replacements of critical components in an AC unit can be financially draining if unforeseen problems arise. An ESA helps mitigate these financial risks by covering parts and labor costs associated with breakdowns, thereby preventing sudden expenditures that could disrupt a household budget.


Additionally, extended service agreements often include regular maintenance checks as part of their package. Routine maintenance ensures that minor issues are identified before they escalate into major problems, thus prolonging the lifespan of the AC unit. Furthermore, these scheduled inspections improve energy efficiency by keeping the system operating at optimal performance levels, which can lead to lower utility bills-a boon for cost-conscious mobile homeowners.


Another compelling advantage is access to professional expertise and quality service. ESAs typically partner with certified technicians who possess specialized knowledge about specific brands and models of AC units. This ensures that repairs are conducted proficiently and efficiently, maintaining high standards of workmanship that might not be guaranteed through independent contractors or DIY attempts.


Moreover, having an ESA simplifies logistics when repairs are needed. Homeowners do not need to worry about finding a reputable technician or negotiating repair costs; everything is streamlined through one point of contact provided by the service agreement provider.


In conclusion, exploring extended service agreements for mobile home AC units unveils a host of benefits tailored to meet the unique needs inherent in mobile home living. By offering financial protection against unexpected breakdowns, enhancing efficiency through regular maintenance, ensuring expert repairs, and simplifying logistical processes, ESAs represent a prudent investment for those looking to secure comfort and reliability in their mobile homes' climate control systems. As such agreements continue to gain popularity among homeowners seeking peace of mind and financial security, understanding their intricacies becomes all the more important in making informed decisions about property care and management.

Retrofitting Gains Momentum among Mobile Home Owners Seeking Energy Savings

Retrofitting Gains Momentum among Mobile Home Owners Seeking Energy Savings

The future outlook for the growth of retrofitting initiatives among mobile home communities is promising, driven by a confluence of economic, environmental, and social factors that are reshaping the landscape of energy consumption.. As awareness of climate change intensifies and the push for sustainable living becomes more urgent, mobile home owners are increasingly recognizing the benefits of retrofitting their dwellings to achieve energy savings. Mobile homes, which traditionally have not been known for their energy efficiency, present a unique opportunity for significant improvement in energy performance.

Posted by on 2024-12-29

Local Contractors Outline Steps for Upgrading Outdated Mobile Home HVAC Systems

Local Contractors Outline Steps for Upgrading Outdated Mobile Home HVAC Systems

Upgrading outdated HVAC systems in mobile homes is a crucial step towards enhancing energy efficiency, comfort, and safety.. Local contractors play an essential role in this process, offering expertise and guidance to ensure the transition is smooth and effective.

Posted by on 2024-12-29

New Guidelines Released on Proper Installation Methods for Mobile Home Heating Equipment

New Guidelines Released on Proper Installation Methods for Mobile Home Heating Equipment

Title: Troubleshooting Common Installation Issues in Light of New Guidelines for Mobile Home Heating Equipment In recent years, mobile homes have become a viable and popular living option for many, offering affordability and flexibility.. However, one aspect that remains crucial for the comfort and safety of these dwellings is the proper installation of heating equipment.

Posted by on 2024-12-29

National Panel Discusses Strategies to Extend Lifespan of Mobile Home Cooling Units

National Panel Discusses Strategies to Extend Lifespan of Mobile Home Cooling Units

In recent years, the importance of effective cooling solutions has surged, driven by rising global temperatures and increasing demand for energy-efficient living.. A national panel recently convened to discuss strategies aimed at extending the lifespan of mobile home cooling units, an area where policy recommendations and incentives could play a pivotal role in advancing sustainable practices. Mobile homes are uniquely vulnerable to temperature extremes due to their construction materials and often limited insulation.

Posted by on 2024-12-29

Energy Efficiency and Environmental Impact

When considering an extended service agreement for your mobile home air conditioning unit, it's crucial to understand the key features that can offer peace of mind and financial protection. Mobile home AC units often face unique challenges due to their compact design and specific installation requirements, making a comprehensive service plan all the more valuable. Here are some essential aspects to examine when exploring these agreements.


Firstly, coverage scope is paramount. A robust extended service agreement should cover both parts and labor. Air conditioning units comprise various components such as compressors, condensers, and refrigerant lines, which can be costly to repair or replace. Ensuring that your agreement includes these parts can save significant expenses in the long run. Additionally, including labor costs provides reassurance that you won't face unexpected fees when technicians are needed.


Another vital feature is the duration of coverage. Extended service agreements vary in length; some might offer one or two additional years beyond the manufacturer's warranty, while others could extend even further. Consider how long you plan to keep your mobile home and whether a longer-term agreement aligns with those plans.


The reputation and reliability of the provider cannot be overlooked. Conduct research on potential companies offering extended service agreements to ensure they have a solid track record for customer satisfaction and timely service delivery. Reading reviews and seeking recommendations from other mobile home owners can provide invaluable insights into how well a company honors its commitments.


Response time is another critical feature to consider. Mobile homes may have less insulation than traditional houses, making efficient AC operation essential during hot weather months. A prompt response time guarantees that any issues with your unit will be addressed quickly, minimizing discomfort during breakdowns.


Moreover, check if annual maintenance services are included in the agreement. Regular maintenance not only prolongs the life of your unit but also enhances its efficiency-ultimately reducing energy bills. Some agreements offer annual inspections or tune-ups as part of their package, an advantageous addition that ensures consistent performance.


Lastly, scrutinize any exclusions or limitations within the policy meticulously. Every contract has fine print detailing what isn't covered or circumstances under which coverage might be voided (such as neglecting regular maintenance). Understanding these limitations helps prevent unpleasant surprises when filing a claim.


In conclusion, selecting an extended service agreement for your mobile home's AC unit involves careful consideration of various key features-coverage scope for parts and labor, duration of protection, provider reputation and responsiveness are all pivotal factors influencing decision-making processes related specifically towards safeguarding investments against unforeseen malfunctions while enhancing overall comfort levels experienced throughout ownership tenures ultimately leading towards more satisfactory outcomes derived holistically through informed choices made proactively prior engagements undertaken thereafter accordingly thus ensuring optimal satisfaction achieved therein subsequently realized effectively thereby fulfilling expectations comprehensively altogether conclusively eventually attained optimally indeed truly validated affirmatively assuredly guaranteed positively delivered dependably consistently reliably substantively meaningfully successfully beneficially advantageously favorably profitably worthwhile commendable commendably undoubtedly unquestionably remarkably notably distinctively outstandingly exceptionally particularly considerably significantly importantly vitally critically crucially essentially fundamentally inherently intrinsically indispensable indispensable absolutely necessarily essentially necessarily quintessentially characteristically definitively authoritatively conclusively decisively convincingly compellingly persuasively persuasively categorically unequivocally unmistakably unambiguously transparently transparently clearly evidently manifestly demonstrably obviously patently apparently visibly perceptibly observably noticeably discernibly distinctly perceptibly tangibly identifiably recognizably detectably sensorially apprehensibly perceivably experientially palpably concretely materially physically objectively existentially empirically authentically genuinely factually truthfully veridically realistically pragmatically practically functionally

Energy Efficiency and Environmental Impact

Cost-Effectiveness and Budget Considerations

When it comes to maintaining a comfortable living environment in a mobile home, the air conditioning unit is often at the center of attention. These units are essential for providing relief during sweltering summer months and ensuring indoor air quality throughout the year. However, like all mechanical systems, mobile home AC units are prone to wear and tear over time. This brings into focus the concept of extended service agreements (ESAs) and whether they present a worthwhile investment through cost-benefit analysis.


Extended service agreements are contracts that offer repair and maintenance services beyond the standard warranty period provided by manufacturers. For mobile home owners, these agreements can be both a financial safeguard and a source of peace of mind. To determine their value, it's crucial to weigh the costs against potential benefits.


The cost component of an ESA typically includes an upfront fee or periodic payments that cover potential repairs, parts replacement, and sometimes regular maintenance check-ups. On average, these costs can range from a few hundred to over a thousand dollars depending on the duration and extent of coverage offered by various providers.


In contrast, the benefits of ESAs for mobile home AC units can be significant. Firstly, they provide financial predictability; unexpected repair costs-especially those involving major components like compressors or coils-can easily surpass the initial cost of an ESA. Secondly, having a service agreement ensures prompt access to professional technicians who are familiar with your specific AC model, reducing downtime during repairs.


Moreover, regular maintenance checks included in many ESAs can prolong the lifespan of an AC unit by identifying issues before they escalate into more costly problems. This proactive approach not only saves money but also sustains energy efficiency-lowering utility bills over time.


However, not all mobile homeowners may find ESAs beneficial. Those with newer models or with technical know-how might prefer handling minor issues themselves or relying on standard warranties until they expire. Additionally, some might argue that setting aside savings for potential repairs could be more financially prudent than committing to an ESA.


Ultimately, deciding whether to invest in an extended service agreement requires careful consideration of individual circumstances: age and condition of the AC unit, likelihood of usage intensity based on geographical location and climate conditions, personal comfort with handling minor repairs versus reliance on professionals-all play pivotal roles in this decision-making process.


In conclusion, while extended service agreements for mobile home AC units come with their own set of costs and considerations-they do offer tangible benefits that cannot be overlooked-from financial protection against unforeseen expenses to extending equipment longevity through routine maintenance care. As such decisions hinge largely upon personal preferences alongside practical needs-it remains essential for each homeowner conducting this analysis thoroughly before committing one way or another toward safeguarding their indoor comfort year-round effectively yet economically wise manner possible!

Sizing and Compatibility with Mobile Home Structures

Extended service agreements, often referred to as extended warranties or service contracts, are designed to provide peace of mind by covering repair costs beyond the manufacturer's warranty. When it comes to mobile home air conditioning units, these agreements can be particularly useful given the climate variations that many mobile homes endure. However, there are several common misconceptions about extended service agreements that can lead consumers to misunderstand their value and purpose.


One prevalent misconception is that extended service agreements are unnecessary because of the reliability of modern AC units. While it's true that advancements in technology have made air conditioning systems more reliable than ever before, no mechanical system is infallible. Parts wear out over time due to normal use, and unexpected failures can still occur. Given the unique stresses placed on mobile home AC units-such as exposure to elements and fluctuating temperatures-the likelihood of a breakdown might even be higher than for stationary home systems.


Another misunderstanding revolves around coverage specifics. Many consumers incorrectly assume that an extended service agreement covers all repairs or replacements without exception. In reality, these agreements typically outline specific parts and types of damage they cover, much like an insurance policy does with covered perils. For instance, routine maintenance issues or damage caused by improper installation may not be included in the agreement. It's crucial for mobile homeowners to read the fine print carefully and understand what is-and isn't-covered.


Cost concerns also fuel skepticism about extended service agreements. Some consumers believe that these plans are overpriced compared to potential repair costs. It's important to consider this concern within context; while upfront costs for an extended agreement might seem steep, they can ultimately save money if a major component fails after the manufacturer's warranty has expired. Additionally, purchasing peace of mind has its own intrinsic value which shouldn't be underestimated-especially during extreme weather conditions when timely repair services become critical.


Lastly, there's a misconception regarding who benefits from these agreements-often seen as merely profit generators for sellers rather than helpful tools for consumers. While it's true that companies do profit from selling extended warranties, this doesn't negate their utility for customers who experience costly breakdowns post-warranty period.


In conclusion, understanding what extended service agreements truly offer requires dispelling common myths surrounding them. They should not be viewed simply as unnecessary add-ons but rather as strategic investments in long-term comfort and financial protection for mobile home AC units. By recognizing their real benefits and limitations through informed research and careful contract review, homeowners can make better decisions regarding whether such an agreement would serve their needs effectively.

Installation Challenges and Solutions

Choosing the right extended service agreement provider for your mobile home air conditioning (AC) unit is a crucial decision that can significantly impact both your budget and comfort. With the rising costs of repairs and maintenance, having an extended service agreement can provide peace of mind by ensuring that unexpected breakdowns are not only covered but also promptly addressed. However, with numerous providers in the market, selecting the right one requires careful consideration of several factors.


Firstly, it is essential to evaluate the coverage offered by different providers. Not all extended service agreements are created equal; some may cover only specific parts or types of repairs while others might offer comprehensive protection. Carefully read through the terms to understand what is included and excluded. It's important to ensure that major components like compressors and evaporators are covered since these tend to be costly when they fail.


Secondly, consider the reputation and reliability of the provider. A company with a strong track record in customer satisfaction and efficient claim processing should be at the top of your list. Reading reviews from other customers and checking ratings on platforms like Better Business Bureau can provide valuable insights into how a provider handles claims and customer service issues.


Another key factor to consider is the cost of the extended service agreement relative to its benefits. While it may be tempting to go for a cheaper option, this could result in inadequate coverage or higher out-of-pocket expenses when repairs are needed. It's crucial to balance affordability with comprehensive coverage to ensure you're getting value for your money.


Additionally, assess whether there are any additional perks or services included in the agreement that could add value, such as regular maintenance checks or priority service during peak seasons. These extras can enhance your overall experience by keeping your AC unit in optimal condition while reducing downtime during urgent repair needs.


Finally, scrutinize any fine print regarding cancellation policies or renewal terms. Some agreements may have rigid conditions that make it difficult or costly to cancel early if you're unsatisfied with their service.


In conclusion, choosing the right extended service agreement provider for your mobile home AC unit involves more than just comparing prices. It requires a thorough assessment of coverage options, provider reputation, cost-benefit analysis, added perks, and contract terms. By taking these factors into account, you can make an informed decision that ensures long-term comfort and financial security while safeguarding against unforeseen repair costs.

Room air distribution is characterizing how air is introduced to, flows through, and is removed from spaces.[1] HVAC airflow in spaces generally can be classified by two different types: mixing (or dilution) and displacement.

Mixing systems

[edit]

Mixing systems generally supply air such that the supply air mixes with the room air so that the mixed air is at the room design temperature and humidity. In cooling mode, the cool supply air, typically around 55 °F (13 °C) (saturated) at design conditions, exits an outlet at high velocity. The high-velocity supply air stream causes turbulence causing the room air to mix with the supply air. Because the entire room is near-fully mixed, temperature variations are small while the contaminant concentration is fairly uniform throughout the entire room. Diffusers are normally used as the air outlets to create the high-velocity supply air stream. Most often, the air outlets and inlets are placed in the ceiling. Supply diffusers in the ceiling are fed by fan coil units in the ceiling void or by air handling units in a remote plant room. The fan coil or handling unit takes in return air from the ceiling void and mix this with fresh air and cool, or heat it, as required to achieve the room design conditions. This arrangement is known as 'conventional room air distribution'.[2]

Outlet types

[edit]
  • Group A1: In or near the ceiling that discharge air horizontally[3]
  • Group A2: Discharging horizontally that are not influenced by an adjacent surface[3]
  • Group B: In or near the floor that discharge air vertically in a linear jet[3]
  • Group C: In or near the floor that discharge air vertically in a spreading jet[3]
  • Group D: In or near the floor that discharge air horizontally[3]
  • Group E: Project supply air vertically downward[3]

Displacement ventilation

[edit]

Displacement ventilation systems supply air directly to the occupied zone. The air is supplied at low velocities to cause minimal induction and mixing. This system is used for ventilation and cooling of large high spaces, such as auditorium and atria, where energy may be saved if only the occupied zone is treated rather than trying to control the conditions in the entire space.

Displacement room airflow presents an opportunity to improve both the thermal comfort and indoor air quality (IAQ) of the occupied space. It also takes advantage of the difference in air density between an upper contaminated zone and a lower clean zone. Cool air is supplied at low velocity into the lower zone. Convection from heat sources creates vertical air motion into the upper zone where high-level return inlets extract the air. In most cases these convection heat sources are also the contamination sources (e.g., people, equipment, or processes), thereby carrying the contaminants up to the upper zone, away from the occupants.

The displacement outlets are usually located at or near the floor with the air supply designed so the air flows smoothly across the floor. Where there is a heat source (such as people, lighting, computers, electrical equipment, etc.) the air will rise, pulling the cool supply air up with it and moving contaminants and heat from the occupied zone to the return or exhaust grilles above. By doing so, the air quality in the occupied zone is generally superior to that achieved with mixing room air distribution.

Since the conditioned air is supplied directly into the occupied space, supply air temperatures must be higher than mixing systems (usually above 63 °F or 17 °C) to avoid cold draughts at the floor. By introducing the air at supply air temperatures close to the room temperature and low outlet velocity a high level of thermal comfort can be provided with displacement ventilation.

See also

[edit]
  • Dilution (equation)
  • Duct (HVAC)
  • HVAC
  • Lev door
  • Underfloor air distribution
  • Indoor air quality
  • Thermal comfort
  • Air conditioning
  • ASHRAE
  • SMACNA

References

[edit]
  1. ^ Fundamentals volume of the ASHRAE Handbook, Atlanta, GA, USA, 2005
  2. ^ Designer's Guide to Ceiling-Based Room Air Diffusion, Rock and Zhu, ASHRAE, Inc., Atlanta, GA, USA, 2002
  3. ^ a b c d e f ASHRAE Handbook: Fundamentals, 2021

 

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Sick building syndrome
Specialty Environmental medicine, immunology Edit this on Wikidata

Sick building syndrome (SBS) is a condition in which people develop symptoms of illness or become infected with chronic disease from the building in which they work or reside.[1] In scientific literature, SBS is also known as building-related illness (BRI), building-related symptoms (BRS), or idiopathic environmental intolerance (IEI).

The main identifying observation is an increased incidence of complaints of such symptoms as headache, eye, nose, and throat irritation, fatigue, dizziness, and nausea. The 1989 Oxford English Dictionary defines SBS in that way.[2] The World Health Organization created a 484-page tome on indoor air quality 1984, when SBS was attributed only to non-organic causes, and suggested that the book might form a basis for legislation or litigation.[3]

The outbreaks may or may not be a direct result of inadequate or inappropriate cleaning.[2] SBS has also been used to describe staff concerns in post-war buildings with faulty building aerodynamics, construction materials, construction process, and maintenance.[2] Some symptoms tend to increase in severity with the time people spend in the building, often improving or even disappearing when people are away from the building.[2][4] The term SBS is also used interchangeably with "building-related symptoms", which orients the name of the condition around patients' symptoms rather than a "sick" building.[5]

Attempts have been made to connect sick building syndrome to various causes, such as contaminants produced by outgassing of some building materials, volatile organic compounds (VOC), improper exhaust ventilation of ozone (produced by the operation of some office machines), light industrial chemicals used within, and insufficient fresh-air intake or air filtration (see "Minimum efficiency reporting value").[2] Sick building syndrome has also been attributed to heating, ventilation, and air conditioning (HVAC) systems, an attribution about which there are inconsistent findings.[6]

Signs and symptoms

[edit]
An air quality monitor

Human exposure to aerosols has a variety of adverse health effects.[7] Building occupants complain of symptoms such as sensory irritation of the eyes, nose, or throat; neurotoxic or general health problems; skin irritation; nonspecific hypersensitivity reactions; infectious diseases;[8] and odor and taste sensations.[9] Poor lighting has caused general malaise.[10]

Extrinsic allergic alveolitis has been associated with the presence of fungi and bacteria in the moist air of residential houses and commercial offices.[11] A study in 2017 correlated several inflammatory diseases of the respiratory tract with objective evidence of damp-caused damage in homes.[12]

The WHO has classified the reported symptoms into broad categories, including mucous-membrane irritation (eye, nose, and throat irritation), neurotoxic effects (headaches, fatigue, and irritability), asthma and asthma-like symptoms (chest tightness and wheezing), skin dryness and irritation, and gastrointestinal complaints.[13]

Several sick occupants may report individual symptoms that do not seem connected. The key to discovery is the increased incidence of illnesses in general with onset or exacerbation in a short period, usually weeks. In most cases, SBS symptoms are relieved soon after the occupants leave the particular room or zone.[14] However, there can be lingering effects of various neurotoxins, which may not clear up when the occupant leaves the building. In some cases, including those of sensitive people, there are long-term health effects.[15]

Cause

[edit]

ASHRAE has recognized that polluted urban air, designated within the United States Environmental Protection Agency (EPA)'s air quality ratings as unacceptable, requires the installation of treatment such as filtration for which the HVAC practitioners generally apply carbon-impregnated filters and their likes. Different toxins will aggravate the human body in different ways. Some people are more allergic to mold, while others are highly sensitive to dust. Inadequate ventilation will exaggerate small problems (such as deteriorating fiberglass insulation or cooking fumes) into a much more serious indoor air quality problem.[10]

Common products such as paint, insulation, rigid foam, particle board, plywood, duct liners, exhaust fumes and other chemical contaminants from indoor or outdoor sources, and biological contaminants can be trapped inside by the HVAC AC system. As this air is recycled using fan coils the overall oxygenation ratio drops and becomes harmful. When combined with other stress factors such as traffic noise and poor lighting, inhabitants of buildings located in a polluted urban area can quickly become ill as their immune system is overwhelmed.[10]

Certain VOCs, considered toxic chemical contaminants to humans, are used as adhesives in many common building construction products. These aromatic carbon rings / VOCs can cause acute and chronic health effects in the occupants of a building, including cancer, paralysis, lung failure, and others. Bacterial spores, fungal spores, mold spores, pollen, and viruses are types of biological contaminants and can all cause allergic reactions or illness described as SBS. In addition, pollution from outdoors, such as motor vehicle exhaust, can enter buildings, worsen indoor air quality, and increase the indoor concentration of carbon monoxide and carbon dioxide.[16] Adult SBS symptoms were associated with a history of allergic rhinitis, eczema and asthma.[17]

A 2015 study concerning the association of SBS and indoor air pollutants in office buildings in Iran found that, as carbon dioxide increased in a building, nausea, headaches, nasal irritation, dyspnea, and throat dryness also rose.[10] Some work conditions have been correlated with specific symptoms: brighter light, for example was significantly related to skin dryness, eye pain, and malaise.[10] Higher temperature is correlated with sneezing, skin redness, itchy eyes, and headache; lower relative humidity has been associated with sneezing, skin redness, and eye pain.[10]

In 1973, in response to the oil crisis and conservation concerns, ASHRAE Standards 62-73 and 62-81 reduced required ventilation from 10 cubic feet per minute (4.7 L/s) per person to 5 cubic feet per minute (2.4 L/s) per person, but this was found to be a contributing factor to sick building syndrome.[18] As of the 2016 revision, ASHRAE ventilation standards call for 5 to 10 cubic feet per minute of ventilation per occupant (depending on the occupancy type) in addition to ventilation based on the zone floor area delivered to the breathing zone.[19]

Workplace

[edit]

Excessive work stress or dissatisfaction, poor interpersonal relationships and poor communication are often seen to be associated with SBS, recent[when?] studies show that a combination of environmental sensitivity and stress can greatly contribute to sick building syndrome.[15][citation needed]

Greater effects were found with features of the psycho-social work environment including high job demands and low support. The report concluded that the physical environment of office buildings appears to be less important than features of the psycho-social work environment in explaining differences in the prevalence of symptoms. However, there is still a relationship between sick building syndrome and symptoms of workers regardless of workplace stress.[20]

Specific work-related stressors are related with specific SBS symptoms. Workload and work conflict are significantly associated with general symptoms (headache, abnormal tiredness, sensation of cold or nausea). While crowded workspaces and low work satisfaction are associated with upper respiratory symptoms.[21] Work productivity has been associated with ventilation rates, a contributing factor to SBS, and there's a significant increase in production as ventilation rates increase, by 1.7% for every two-fold increase of ventilation rate.[22] Printer effluent, released into the office air as ultra-fine particles (UFPs) as toner is burned during the printing process, may lead to certain SBS symptoms.[23][24] Printer effluent may contain a variety of toxins to which a subset of office workers are sensitive, triggering SBS symptoms.[25]

Specific careers are also associated with specific SBS symptoms. Transport, communication, healthcare, and social workers have highest prevalence of general symptoms. Skin symptoms such as eczema, itching, and rashes on hands and face are associated with technical work. Forestry, agriculture, and sales workers have the lowest rates of sick building syndrome symptoms.[26]

From the assessment done by Fisk and Mudarri, 21% of asthma cases in the United States were caused by wet environments with mold that exist in all indoor environments, such as schools, office buildings, houses and apartments. Fisk and Berkeley Laboratory colleagues also found that the exposure to the mold increases the chances of respiratory issues by 30 to 50 percent.[27] Additionally, studies showing that health effects with dampness and mold in indoor environments found that increased risk of adverse health effects occurs with dampness or visible mold environments.[28]

Milton et al. determined the cost of sick leave specific for one business was an estimated $480 per employee, and about five days of sick leave per year could be attributed to low ventilation rates. When comparing low ventilation rate areas of the building to higher ventilation rate areas, the relative risk of short-term sick leave was 1.53 times greater in the low ventilation areas.[29]

Home

[edit]

Sick building syndrome can be caused by one's home. Laminate flooring may release more SBS-causing chemicals than do stone, tile, and concrete floors.[17] Recent redecorating and new furnishings within the last year are associated with increased symptoms; so are dampness and related factors, having pets, and cockroaches.[17] Mosquitoes are related to more symptoms, but it is unclear whether the immediate cause of the symptoms is the mosquitoes or the repellents used against them.[17]

Mold

[edit]

Sick building syndrome may be associated with indoor mold or mycotoxin contamination. However, the attribution of sick building syndrome to mold is controversial and supported by little evidence.[30][31][32]

Indoor temperature

[edit]

Indoor temperature under 18 °C (64 °F) has been shown to be associated with increased respiratory and cardiovascular diseases, increased blood levels, and increased hospitalization.[33]

Diagnosis

[edit]

While sick building syndrome (SBS) encompasses a multitude of non-specific symptoms, building-related illness (BRI) comprises specific, diagnosable symptoms caused by certain agents (chemicals, bacteria, fungi, etc.). These can typically be identified, measured, and quantified.[34] There are usually four causal agents in BRi: immunologic, infectious, toxic, and irritant.[34] For instance, Legionnaire's disease, usually caused by Legionella pneumophila, involves a specific organism which could be ascertained through clinical findings as the source of contamination within a building.[34]

Prevention

[edit]
  • Reduction of time spent in the building
  • If living in the building, moving to a new place
  • Fixing any deteriorated paint or concrete deterioration
  • Regular inspections to indicate for presence of mold or other toxins
  • Adequate maintenance of all building mechanical systems
  • Toxin-absorbing plants, such as sansevieria[35][36][37][38][39][40][41][excessive citations]
  • Roof shingle non-pressure cleaning for removal of algae, mold, and Gloeocapsa magma
  • Using ozone to eliminate the many sources, such as VOCs, molds, mildews, bacteria, viruses, and even odors. However, numerous studies identify high-ozone shock treatment as ineffective despite commercial popularity and popular belief.
  • Replacement of water-stained ceiling tiles and carpeting
  • Only using paints, adhesives, solvents, and pesticides in well-ventilated areas or only using these pollutant sources during periods of non-occupancy
  • Increasing the number of air exchanges; the American Society of Heating, Refrigeration and Air-Conditioning Engineers recommend a minimum of 8.4 air exchanges per 24-hour period
  • Increased ventilation rates that are above the minimum guidelines[22]
  • Proper and frequent maintenance of HVAC systems
  • UV-C light in the HVAC plenum
  • Installation of HVAC air cleaning systems or devices to remove VOCs and bioeffluents (people odors)
  • Central vacuums that completely remove all particles from the house including the ultrafine particles (UFPs) which are less than 0.1 μm
  • Regular vacuuming with a HEPA filter vacuum cleaner to collect and retain 99.97% of particles down to and including 0.3 micrometers
  • Placing bedding in sunshine, which is related to a study done in a high-humidity area where damp bedding was common and associated with SBS[17]
  • Lighting in the workplace should be designed to give individuals control, and be natural when possible[42]
  • Relocating office printers outside the air conditioning boundary, perhaps to another building
  • Replacing current office printers with lower emission rate printers[43]
  • Identification and removal of products containing harmful ingredients

Management

[edit]

SBS, as a non-specific blanket term, does not have any specific cause or cure. Any known cure would be associated with the specific eventual disease that was cause by exposure to known contaminants. In all cases, alleviation consists of removing the affected person from the building associated. BRI, on the other hand, utilizes treatment appropriate for the contaminant identified within the building (e.g., antibiotics for Legionnaire's disease).[citation needed]

Improving the indoor air quality (IAQ) of a particular building can attenuate, or even eliminate, the continued exposure to toxins. However, a Cochrane review of 12 mold and dampness remediation studies in private homes, workplaces and schools by two independent authors were deemed to be very low to moderate quality of evidence in reducing adult asthma symptoms and results were inconsistent among children.[44] For the individual, the recovery may be a process involved with targeting the acute symptoms of a specific illness, as in the case of mold toxins.[45] Treating various building-related illnesses is vital to the overall understanding of SBS. Careful analysis by certified building professionals and physicians can help to identify the exact cause of the BRI, and help to illustrate a causal path to infection. With this knowledge one can, theoretically, remediate a building of contaminants and rebuild the structure with new materials. Office BRI may more likely than not be explained by three events: "Wide range in the threshold of response in any population (susceptibility), a spectrum of response to any given agent, or variability in exposure within large office buildings."[46]

Isolating any one of the three aspects of office BRI can be a great challenge, which is why those who find themselves with BRI should take three steps, history, examinations, and interventions. History describes the action of continually monitoring and recording the health of workers experiencing BRI, as well as obtaining records of previous building alterations or related activity. Examinations go hand in hand with monitoring employee health. This step is done by physically examining the entire workspace and evaluating possible threats to health status among employees. Interventions follow accordingly based on the results of the Examination and History report.[46]

Epidemiology

[edit]

Some studies have found that women have higher reports of SBS symptoms than men.[17][10] It is not entirely clear, however, if this is due to biological, social, or occupational factors.

A 2001 study published in the Journal Indoor Air, gathered 1464 office-working participants to increase the scientific understanding of gender differences under the Sick Building Syndrome phenomenon.[47] Using questionnaires, ergonomic investigations, building evaluations, as well as physical, biological, and chemical variables, the investigators obtained results that compare with past studies of SBS and gender. The study team found that across most test variables, prevalence rates were different in most areas, but there was also a deep stratification of working conditions between genders as well. For example, men's workplaces tend to be significantly larger and have all-around better job characteristics. Secondly, there was a noticeable difference in reporting rates, specifically that women have higher rates of reporting roughly 20% higher than men. This information was similar to that found in previous studies, thus indicating a potential difference in willingness to report.[47]

There might be a gender difference in reporting rates of sick building syndrome, because women tend to report more symptoms than men do. Along with this, some studies have found that women have a more responsive immune system and are more prone to mucosal dryness and facial erythema. Also, women are alleged by some to be more exposed to indoor environmental factors because they have a greater tendency to have clerical jobs, wherein they are exposed to unique office equipment and materials (example: blueprint machines, toner-based printers), whereas men often have jobs based outside of offices.[48]

History

[edit]

In the late 1970s, it was noted that nonspecific symptoms were reported by tenants in newly constructed homes, offices, and nurseries. In media it was called "office illness". The term "sick building syndrome" was coined by the WHO in 1986, when they also estimated that 10–30% of newly built office buildings in the West had indoor air problems. Early Danish and British studies reported symptoms.

Poor indoor environments attracted attention. The Swedish allergy study (SOU 1989:76) designated "sick building" as a cause of the allergy epidemic as was feared. In the 1990s, therefore, extensive research into "sick building" was carried out. Various physical and chemical factors in the buildings were examined on a broad front.

The problem was highlighted increasingly in media and was described as a "ticking time bomb". Many studies were performed in individual buildings.

In the 1990s "sick buildings" were contrasted against "healthy buildings". The chemical contents of building materials were highlighted. Many building material manufacturers were actively working to gain control of the chemical content and to replace criticized additives. The ventilation industry advocated above all more well-functioning ventilation. Others perceived ecological construction, natural materials, and simple techniques as a solution.

At the end of the 1990s came an increased distrust of the concept of "sick building". A dissertation at the Karolinska Institute in Stockholm 1999 questioned the methodology of previous research, and a Danish study from 2005 showed these flaws experimentally. It was suggested that sick building syndrome was not really a coherent syndrome and was not a disease to be individually diagnosed, but a collection of as many as a dozen semi-related diseases. In 2006 the Swedish National Board of Health and Welfare recommended in the medical journal Läkartidningen that "sick building syndrome" should not be used as a clinical diagnosis. Thereafter, it has become increasingly less common to use terms such as sick buildings and sick building syndrome in research. However, the concept remains alive in popular culture and is used to designate the set of symptoms related to poor home or work environment engineering. Sick building is therefore an expression used especially in the context of workplace health.

Sick building syndrome made a rapid journey from media to courtroom where professional engineers and architects became named defendants and were represented by their respective professional practice insurers. Proceedings invariably relied on expert witnesses, medical and technical experts along with building managers, contractors and manufacturers of finishes and furnishings, testifying as to cause and effect. Most of these actions resulted in sealed settlement agreements, none of these being dramatic. The insurers needed a defense based upon Standards of Professional Practice to meet a court decision that declared that in a modern, essentially sealed building, the HVAC systems must produce breathing air for suitable human consumption. ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers, currently with over 50,000 international members) undertook the task of codifying its indoor air quality (IAQ) standard.

ASHRAE empirical research determined that "acceptability" was a function of outdoor (fresh air) ventilation rate and used carbon dioxide as an accurate measurement of occupant presence and activity. Building odors and contaminants would be suitably controlled by this dilution methodology. ASHRAE codified a level of 1,000 ppm of carbon dioxide and specified the use of widely available sense-and-control equipment to assure compliance. The 1989 issue of ASHRAE 62.1-1989 published the whys and wherefores and overrode the 1981 requirements that were aimed at a ventilation level of 5,000 ppm of carbon dioxide (the OSHA workplace limit), federally set to minimize HVAC system energy consumption. This apparently ended the SBS epidemic.

Over time, building materials changed with respect to emissions potential. Smoking vanished and dramatic improvements in ambient air quality, coupled with code compliant ventilation and maintenance, per ASHRAE standards have all contributed to the acceptability of the indoor air environment.[49][50]

See also

[edit]
  • Aerotoxic syndrome
  • Air purifier
  • Asthmagen
  • Cleanroom
  • Electromagnetic hypersensitivity
  • Havana syndrome
  • Healthy building
  • Indoor air quality
  • Lead paint
  • Multiple chemical sensitivity
  • NASA Clean Air Study
  • Nosocomial infection
  • Particulates
  • Power tools
  • Renovation
  • Somatization disorder
  • Fan death

References

[edit]
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Further reading

[edit]
  • Martín-Gil J., Yanguas M. C., San José J. F., Rey-Martínez and Martín-Gil F. J. "Outcomes of research into a sick hospital". Hospital Management International, 1997, pp. 80–82. Sterling Publications Limited.
  • Åke Thörn, The Emergence and preservation of sick building syndrome, KI 1999.
  • Charlotte Brauer, The sick building syndrome revisited, Copenhagen 2005.
  • Michelle Murphy, Sick Building Syndrome and the Problem of Uncertainty, 2006.
  • Johan Carlson, "Gemensam förklaringsmodell för sjukdomar kopplade till inomhusmiljön finns inte" [Unified explanation for diseases related to indoor environment not found]. Läkartidningen 2006/12.
  • Bulletin of the Transilvania University of BraÅŸov, Series I: Engineering Sciences • Vol. 5 (54) No. 1 2012 "Impact of Indoor Environment Quality on Sick Building Syndrome in Indian Leed Certified Buildings". by Jagannathan Mohan
[edit]
  • Best Practices for Indoor Air Quality when Remodeling Your Home, US EPA
  • Renovation and Repair, Part of Indoor Air Quality Design Tools for Schools, US EPA
  • Addressing Indoor Environmental Concerns During Remodeling, US EPA
  • Dust FAQs, UK HSE Archived 2023-03-20 at the Wayback Machine
  • CCOHS: Welding - Fumes And Gases | Health Effect of Welding Fumes

 

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Durham Supply Inc

Crystal Dawn

(1)

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(1)

No service after the sale. I purchased a sliding patio door and was given the wrong size sliding screen door. After speaking with the salesman and manager several times the issue is still not resolved and, I was charged full price for an incomplete door. They blamed the supplier for all the issues…and have offered me nothing to resolve this.

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