A pool cover pump is a specialized, submersible or external pump designed specifically to remove accumulated water from a pool cover. Rainwater, morning dew, and snow melt can gather on the surface of a solid or mesh safety cover, creating significant weight and potential stress on the cover and pool structure; this device automates the drainage process, protecting your investment.
How a Pool Cover Pump Works
Unlike standard utility pumps, a cover pump is engineered for low-volume, continuous operation. It features a small centrifugal impeller that quietly moves water through a hose and away from the pool area. Most modern units sit directly on the cover's surface, submerged in the collected water, which cools the motor and prevents dry running. The system is typically plugged into a standard outdoor outlet, making installation straightforward for DIY homeowners.
Types: Submersible vs. External
When comparing models, you will encounter two primary configurations. Submersible pumps sit directly in the water on top of the cover, operating silently and remaining hidden from view. External or floating pumps, however, sit on the edge of the cover or on a deck, pulling water through a hose via suction, which can be a better option for very heavy debris loads.
Protecting Your Pool Structure
The weight of hundreds of gallons of rainwater can cause a solid cover to sag, creating an umbrella effect that funnels water back into the pool or stresses the winter plugs. By actively removing this weight, a cover pump eliminates the risk of tears, rips, and structural damage to the pool wall. It ensures that when you remove the cover in the spring, the pool shell is dry and ready for immediate use.
Preventing Cover Damage and Mold
Constant moisture trapped beneath a cover creates an ideal environment for mold, mildew, and unpleasant odors. For mesh safety covers, trapped water can lead to premature fabric rot. A pump keeps the surface dry, extending the lifespan of the cover significantly. This proactive maintenance step saves you the cost and hassle of replacing a damaged cover years sooner than expected.
Choosing the Right Size
Selecting the correct capacity is crucial for efficiency. Manufacturers rate these pumps in gallons per hour (GPH); a general rule of thumb is to choose a unit that can cycle the total volume of water on your cover in about an hour or less. For instance, if you typically have 500 gallons of water on your cover, a 500 to 1000 GPH unit is appropriate to handle varying weather conditions.
| Approx. Water Volume | Recommended Pump Capacity | Typical Use Case |
|---|---|---|
| 200 Gallons | 250 – 500 GPH | Small above-ground pools or light rain areas |
| 500 Gallons | 500 – 1000 GPH | Average residential in-ground pool with moderate climate |
| 1000+ Gallons | 1000+ GPH | Large pools or regions with heavy snowfall/rainfall |
Key Features to Consider
When shopping, look for a dry-run protection feature, which prevents the motor from burning out if the cover drains before the pump starts. A floating switch or water sensor automatically activates the unit when water is present. Cord length is another practical detail; ensure the power cord reaches an outlet without stretching across the walking surface, where it could pose a tripping hazard.
Installation and Seasonal Use
Using a cover pump is a simple seasonal ritual. As autumn progresses and before winter storms arrive, spread the cover loosely on the pool. Place the pump in the center and connect the discharge hose to direct water away from the foundation. You do not need to prime the system; once plugged in, the pump will handle the work. At the end of the cover season, cleaning the screen or filter mesh ensures optimal performance for the following year.
