Your pool doesn’t have to hibernate the second the leaves change. With the right setup, you can keep your pool warm in winter and get months of extra swim time out of the backyard you already love. No polar bear genes required. Here are three tools that make it happen, plus how to pick the right combo for where you live.
Step 1: Add a Pool Heater
If you want to keep your pool warm in winter, start here. A heater is what actually raises your water temperature. How warm it gets depends on your pool size, the air temp, and how long you run it. Live somewhere sunny? Solar pool heating is worth a look too.
Gas Heaters: Fast and Mighty
Gas heaters warm your water fast, no matter how cold it gets outside. They’re the top pick for truly chilly swims. They’re also great for pools with a spa, since you can heat just the spa for a quick soak. Choose an energy-efficient model, like the ones from Hayward. You’ll pay a little more upfront and save every time you heat.
Heat Pumps: The Low-Cost Cruiser
Heat pumps run on electricity and pull warmth from the air to heat your water. They cost more to buy but less to run. The catch: according to the U.S. Department of Energy, they lose steam once the air drops below about 45 to 50°F, and they struggle in dry desert climates. They’re best for mild winters.
Quick take: Cold winters? Go gas. Mild winters? A heat pump keeps things toasty for less.
Step 2: Cover Your Pool (This Is the Money Saver)
Here’s the secret: most of your pool’s heat escapes through evaporation. A cover stops that, so your heater runs less and your energy bill stays lower. The U.S. Department of Energy says a pool cover can cut heating costs by 50 to 70 percent.
Solar (Bubble) Covers
They look like giant bubble wrap and work like a cozy blanket. The air bubbles trap heat in the water, and they’re the most budget-friendly option out there.
Insulated Vinyl Covers
They’re custom fit to your pool’s shape and built to last. Pick an insulated version to hold in even more heat.
Safety Covers
They anchor to your deck so kids and pets can’t get in. Solid versions hold in some heat, but they’re built for protection, not winter swimming.
Pro tip: a cover on a reel (crank it on, crank it off) is the sweet spot between a fully manual cover and a pricier automatic one. Always take the cover completely off before anyone swims.
Step 3: Level Up With a Pool Dome
Want to swim in January? A pool dome is a clear, air-supported enclosure that covers your whole pool. It traps the sun’s warmth, blocks cold wind, and keeps out leaves and bugs. That means warmer swims and less cleanup. You get the indoor pool feeling without building an indoor pool.
Want something more permanent? Retractable enclosures open up in summer and close when temps drop.
Once your water’s warm, it’s time to celebrate. Grab our tips on how to throw a fall or winter pool party and show off your extended swim season.
Which Winter Pool Setup Is Right for You?
The more you stack, the easier it is to keep your pool warm in winter. Here’s your cheat sheet:
- Mild winters: heat pump + solar cover
- Chilly winters: gas heater + insulated cover
- Swim (almost) year-round: heater + cover + pool dome
Live where the water freezes solid? No shame in taking a break. Here’s how to close your pool for winter the right way, so it’s ready to go come spring.
Ready to Keep Your Pool Warm in Winter?
Picture this: it’s a crisp November Saturday and you’re floating in warm water while the leaves fall around you. Your local Blue Haven team can help you choose the right heater, cover, or enclosure for your pool and your budget.
Want more ways to love your backyard all year? Join the Backyard Blueprint email list for fun ideas delivered straight to your inbox.
