If you want to swim longer into the season, the best electric heat pumps for inground pool are the smartest upgrade you can make — and the five below are the top picks on the market right now.
1. Hayward W3HP21004T HeatPro 95,000 BTU Pool Heat Pump
The Hayward HeatPro 95K is the gold standard for inground pool heating — trusted for decades and built with Ultra Gold corrosion resistance that sets it apart from day one.
Features:
- 95,000 BTU output for inground pools up to 21,000 gallons
- Ultra Gold evaporator fin for coastal environment durability
- Titanium heat exchanger for saltwater and chemical corrosion resistance
- Compatible with Hayward, AquaLink, Goldline, and Intermatic control systems
Pros:
- Industry-leading corrosion resistance makes it ideal for coastal climates
- Runs far more economically than gas or propane heaters
- Lightweight at under 250 lbs for easier installation
Cons:
- No built-in WiFi — requires separate automation for remote control
- Professional installation is required
Why you should use it:
You get over a century of Hayward engineering — if you want a heat pump that works season after season without fuss, especially in a saltwater pool, this is it.
2. DR. Infrared Heater DR-900HP Full DC Inverter 90,000 BTU
The DR-900HP brings serious smart technology to pool heating with a full DC inverter system that adjusts output from 20% to 100% based on demand.
This means you never waste electricity heating water that is already warm.
Features:
- 90,000 BTU full DC inverter for pools up to 28,000 gallons
- Patented Spiral Titanium Heat Exchanger with 30% more surface area
- Built-in WiFi with mobile app scheduling and remote temperature control
- CSA and AHRI certified for safety and performance
Pros:
- WiFi app lets you control your pool temperature from anywhere
- Full inverter saves up to 70% on energy costs vs gas heaters
- Spiral titanium exchanger transfers heat faster than standard designs
Cons:
- Higher upfront cost than non-inverter units
- WiFi setup can be tricky for less tech-savvy users
- App experience depends on firmware updates
Why you should use it:
The DR-900HP lets you schedule heating so your pool is ready when you step outside — smart control and real energy savings in one unit.
3. Raypak WeatherKing TWPH-6560 118,000 BTU Pool Heat Pump
If you own a large inground pool and need a dependable workhorse, the Raypak WeatherKing delivers 118,000 BTUs backed by the Rheem family brand and the best warranty on this list.
Features:
- 118,000 BTU output for large inground pools
- Spiral Titanium Tube Heat Exchanger for a corrosion-free waterway
- Industry-leading warranty: 2 years labor, 7 years parts, 10 years on the titanium exchanger
- Quiet scroll compressor for efficient, low-noise heating
- Digital controls with easy-to-read service diagnostic codes
Pros:
- The 10-year titanium heat exchanger warranty is unmatched in this category
- Scroll compressor is quieter and more durable than piston-type compressors
- Rheem brand heritage means parts and support are widely available
Cons:
- No built-in WiFi for remote scheduling
- Professional installation required for warranty validation
Why you should use it:
You are buying a decade of protection — just like choosing weatherproof outdoor furniture, durability always pays off.
The WeatherKing keeps large pools comfortable without stressing your energy bill.
4. BluePlenum FlowMax80 80,000 BTU Inground Pool Heat Pump
The BluePlenum FlowMax80 is the efficiency champion of this list, with an astonishing COP of 16.2 — producing over 16 units of heat for every unit of electricity consumed.
That kind of efficiency saves you serious money season after season.
Features:
- 80,000 BTU full DC inverter for pools up to 22,000 gallons
- COP of 16.2 for energy savings up to 73% vs gas heaters
- Dual-mode heating and cooling for year-round pool temperature control
- Smart WiFi control via mobile app with scheduling and remote access
- FCC and CEC certified for safety and energy compliance
Pros:
- COP 16.2 is among the highest available for residential pool heat pumps
- Dual heating and cooling extends usability through summer and cooler months
- WiFi app makes temperature scheduling effortless
Cons:
- Newer brand with a shorter track record than Hayward or Raypak
- Cooling mode requires proper flow setup for best performance
Why you should use it:
You want the lowest operating cost without sacrificing performance.
If you love energy-efficient upgrades like RV tankless water heaters, you will appreciate how the FlowMax80 applies the same thinking to your pool.
5. DR. Infrared Heater DR-1100HP Full DC Inverter 110,000 BTU
The DR-1100HP is the big sibling to the DR-900HP, stepping up to 110,000 BTUs and handling inground pools up to 32,000 gallons with the same full DC inverter smarts.
If you have a large pool and want smart control with maximum coverage, this is your unit.
Features:
- 110,000 BTU full DC inverter for pools up to 32,000 gallons
- Patented Spiral Titanium Heat Exchanger with 30% increased heat transfer surface
- Built-in WiFi with app-based scheduling and remote monitoring
- CSA and AHRI certified, non-corrosive housing for coastal climates
Pros:
- Handles very large inground pools that smaller units struggle with
- Variable inverter from 20% to 100% eliminates energy waste
- Corrosion-resistant build handles salt air and humid climates well
Cons:
- Higher investment than the DR-900HP
- Performance dips slightly in very cold air temperatures like all heat pumps
Why you should use it:
You have a large inground pool and refuse to compromise on coverage or smart control.
The DR-1100HP covers pools most residential units cannot heat efficiently while the inverter keeps electricity costs manageable.
Buying Guide
Choosing the right pool heat pump starts with your pool’s gallon capacity.
Match that to the correct BTU rating, always prioritize a titanium heat exchanger for chemical and saltwater durability, choose an inverter compressor for long-term energy savings, and add WiFi control for convenient remote scheduling from your phone.
Tips for Your Pool Heat Pump
Install with proper airflow. Leave at least two feet of clearance on all sides and six feet above.
Always use a pool cover. A cover cuts heat loss by up to 70%, so your heat pump runs far less to hold temperature overnight.
Run during off-peak hours. Schedule heating when utility rates are lower — WiFi app models make this simple.
Keep water balanced. Hold pH between 7.2 and 7.6 to protect your heat exchanger and extend unit lifespan.
Comparison Table
| Feature | Hayward HeatPro Pump | DR-900HP Inverter Pump | Raypak WeatherKing Pump | BluePlenum FlowMax Pump | DR-1100HP Inverter Pump |
|---|---|---|---|---|---|
| Heating Capacity | 95,000 BTU | 90,000 BTU | 118,000 BTU | 80,000 BTU | 110,000 BTU |
| Pool Capacity | Up to 21,000 gal | Up to 28,000 gal | Up to 30,000 gal | Up to 22,000 gal | Up to 32,000 gal |
| Key Highlight | Ultra Gold Protection | Full DC Inverter | 10-Year Exchanger Warranty | 16.2 COP Efficiency | Smart Wi-Fi Control |
| Wi-Fi Support | No | Yes | No | Yes | Yes |
| Best For | Coastal Saltwater Pools | Smart Energy Savings | Large Pools | Lowest Running Costs | Extra-Large Pools |
FAQ
What size heat pump do I need for my inground pool?
A good rule is 10,000–15,000 BTUs per 5,000 gallons — a 20,000-gallon pool typically needs at least an 80,000–95,000 BTU unit for comfortable heating in most US climates.
Are electric heat pumps more efficient than gas heaters?
Yes — electric heat pumps cost up to 70% less to operate than gas because they move heat from the air rather than burning fuel.
Gas heats faster but costs far more over a full season.
How long do pool heat pumps last?
A well-maintained heat pump typically lasts 10 to 15 years, and titanium heat exchangers extend that lifespan further by resisting pool chemicals and saltwater.
Can these heat pumps work with saltwater pools?
Yes — all five picks feature titanium heat exchangers rated for saltwater resistance, and the Hayward W3HP21004T adds an Ultra Gold evaporator fin for extra coastal protection.
Conclusion
The best electric heat pumps for inground pool come down to what matters most to you.
For coastal durability and brand trust, go with the Hayward W3HP21004T.
For smart app control and inverter savings, the DR-900HP delivers.
Need massive output with a decade warranty? The Raypak WeatherKing TWPH-6560 delivers.
For lowest operating costs, the BluePlenum FlowMax80 and COP of 16.2 is in a class of its own.
For very large pools needing 110,000 BTUs of smart power, the DR-1100HP is the one.
Pick the right heat pump and your backyard earns its keep every day.