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Inground Pool Heaters & Heat Pumps

We offer a range of inground pool heat pumps with WiFi smart control, inverter technology, and a titanium heat exchanger, tailored to fit different pool sizes and energy efficiency needs. Our heat pumps are designed for reliability and easy integration with your existing pool equipment.

Inground Pool Heaters for Sale — Electric Heat Pumps for Every Swim Season

Varminpool's inground pool heaters are electric heat pumps designed to heat larger residential pools efficiently during spring, summer and fall. An electric heat pump extracts heat from the air and moves it to your pool water, without consuming fuel like a gas heater, and keeps your pool comfortable throughout the entire season. From the smallest 12,000-gallon pool to the largest 42,000-gallon backyard pool, every model in this collection is equipped with WiFi smart control, full inverter technology, and a titanium heat exchanger. If you live in a cooler climate or are planning to swim during the shoulder months, opting for a larger size will help your heat pump reach temperature faster and more efficiently once it's in operation. 

Smart, Efficient Heating You Can Control From Anywhere

Full inverter technology allows for each heat pump to run at varying speeds, reducing energy consumption, operating at a lower noise level and maintaining a steady water temperature compared to fixed speed heat pumps. This efficiency is why the daily inground pool heater cost is significantly lower than a comparable gas heater. The built-in WiFi smart control system enables you to control the heating process and temperature through your smartphone, whether you are on iOS or Android. The titanium heat exchanger provides resistance to corrosion in both fresh and salt water, lengthening the heater's lifespan for years.

Inground Pool Heater Installation and Compatibility

Inground pool heater installation is simple: each heat pump is installed directly into the existing inground plumbing, after the filter, and can be used with standard pool pumps and equipment, and does not require any significant modifications. The electrical hookup will require a licensed electrician, while the plumbing system can be done by an experienced DIYer. With free US shipping nationwide, a 30-day return window, and a 1-year warranty, Varminpool makes it simple to keep your pool warm and swim-ready year after year.

Can you leave an inground pool heat pump on all the time?

Yes, heat pumps are designed for continuous operation. Running yours on a maintained schedule through the WiFi app is usually more efficient than powering it on and off, since it takes less energy to hold a temperature than to reheat cooled water from scratch.

Where's the best place to install an inground pool heat pump?

Install it in an open, well-ventilated spot near your existing pool equipment pad, a few feet clear of walls, fences, or enclosures so air can flow freely across the coil. Avoid low spots where cold air collects, and keep it away from dryer vents or other heat sources nearby.

Should you oversize an inground pool heat pump?

Sizing up one tier from our BTU chart is worth it if you're in a cooler climate or want to swim into spring and fall. Going well beyond your pool's actual needs mainly adds upfront cost without much extra benefit, since heat pumps run most efficiently when sized to hold steady rather than cycling on and off.

Is it hard to add a heat pump to an existing inground pool?

It's a moderate project. The unit connects to your existing plumbing after the filter and before the return line and needs a dedicated electrical circuit. Most owners hire a licensed electrician for the electrical hookup, while the plumbing connections are straightforward for an experienced DIYer.

Is it expensive to run an inground pool heat pump?

Heat pumps are the most energy-efficient way to heat a pool, since they move existing heat from the air rather than generating it, unlike gas heaters. Actual running cost depends on local electricity rates, pool size, and climate, but most owners find it far cheaper to operate than a comparable gas unit over a season.

What size heat pump do I need for an inground pool?

Match the heat pump's BTU output to your pool size in gallons: 16,000-20,000 BTU for pools up to 5,000 gallons, 25,000-35,000 BTU for 5,000-10,000 gallons, 40,000-55,000 BTU for 10,000-15,000 gallons, 55,000-70,000 BTU for 15,000-20,000 gallons, 85,000-110,000 BTU for 20,000-30,000 gallons, and 120,000+ BTU for pools over 30,000 gallons. Size up one tier if you're in a cooler climate or want to swim into the shoulder months.

What's the lifespan of an inground pool heat pump?

A well-maintained heat pump typically lasts 10 to 15 years, depending on usage patterns and regular maintenance.
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