5 Gallon Gas Water Heaters: A Comprehensive Guide
In the market for a new water heater? If you're considering a gas-powered model with a 5-gallon capacity, you've come to the right place. This guide will walk you through everything you need to know about 5-gallon gas water heaters, helping you make an informed decision for your home.
Understanding 5 Gallon Gas Water Heaters
5-gallon gas water heaters are designed to provide a continuous supply of hot water for small to medium-sized households. They are fueled by natural gas or propane, making them an energy-efficient and cost-effective option. Here's a quick overview of what sets them apart:
- Capacity: As the name suggests, these water heaters can hold 5 gallons of water at a time. This size is ideal for homes with one or two bathrooms.
- Fuel Type: Gas water heaters use natural gas or propane to heat water. They are known for their energy efficiency and low operating costs.
- Recovery Rate: The recovery rate refers to how quickly the water heater can heat and replace the hot water used. Gas water heaters typically have a faster recovery rate than electric models.
Key Features to Consider
When shopping for a 5-gallon gas water heater, consider the following features to ensure you're getting the best model for your needs:

Energy Efficiency
Look for an Energy Star-rated water heater. These models meet strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. They can help you save money on your utility bills and reduce your carbon footprint.
First Hour Rating (FHR)
The FHR indicates how much hot water the heater can deliver in the first hour of use. For a 5-gallon water heater, you'll want an FHR of at least 40 gallons to ensure you have enough hot water for multiple uses, like showering and dishwashing, during peak hours.
Thermal Expansion Valve
A thermal expansion valve helps prevent excessive pressure buildup in your plumbing system. This feature is particularly important in areas with hard water, as it can help extend the lifespan of your water heater and plumbing fixtures.

Installation and Maintenance
Installing a 5-gallon gas water heater requires careful attention to safety and local building codes. If you're not comfortable performing the installation yourself, it's best to hire a licensed plumber. Regular maintenance, such as flushing the tank to remove sediment buildup, can help extend the lifespan of your water heater and keep it running efficiently.
Top 5 Gallon Gas Water Heater Models
Here are five top-rated 5-gallon gas water heaters to consider for your home:
| Model | Brand | Energy Factor | First Hour Rating |
|---|---|---|---|
| G40-50D | Rheem | 0.65 | 40 gallons |
| G50-50D | Rheem | 0.65 | 50 gallons |
| G50-50DV | Rheem | 0.65 | 50 gallons |
| FVIR50-50 | Bradford White | 0.67 | 50 gallons |
| G50-50D | A.O. Smith | 0.65 | 50 gallons |
These models offer a range of features and energy efficiency ratings, so you can choose the one that best suits your needs and budget.
Frequently Asked Questions
How long does a 5-gallon gas water heater last?
The lifespan of a 5-gallon gas water heater typically ranges from 8 to 12 years, depending on factors such as the quality of the model, how well it's maintained, and the water quality in your area.
Can I install a 5-gallon gas water heater myself?
While it's technically possible to install a 5-gallon gas water heater yourself, it's recommended to hire a licensed plumber to ensure the job is done safely and correctly. Incorrect installation can lead to leaks, carbon monoxide poisoning, and other safety hazards.
How much does a 5-gallon gas water heater cost?
The cost of a 5-gallon gas water heater can vary depending on the brand, features, and energy efficiency rating. On average, you can expect to pay between $500 and $1,500 for the water heater itself, not including installation costs.
When shopping for a 5-gallon gas water heater, it's essential to consider factors such as energy efficiency, capacity, and features to find the best model for your home. By taking the time to research and compare your options, you can invest in a water heater that will provide reliable hot water for years to come.