Pool Heaters & Heat Pumps
Best Pool Heater (2026): 4 Models Side by Side
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The MICOE 75,000 BTU heat pump leads this list for pool heaters: it covers pools up to 21,000 gallons with heating and cooling modes and app control. The Varpoolfaye Runner-Up covers pools up to 7,000 gallons at 30,000 BTU, while the AQUASTRONG covers pools up to 5,000 gallons at 16,000 BTU. The Oibath adds full inverter control at 35,000 BTU with WiFi and Bluetooth.
Top picks at a glance
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Best OverallMICOE 75,000 BTU Pool Heat Pump9.8 View on Amazon -
9.4 View on Amazon -
9.3 View on Amazon -
9.2 View on Amazon
Compare the specs
Ranked on heat output, phone app control from each listing, plus how many buyers have rated it. A dash (—) means we could not confirm that figure from the listing.
| Pick | Heat output | Phone app control | Weight | Warranty |
|---|---|---|---|---|
| 1. MICOE 75,000 BTU Pool Heat Pump | 75,000 BTU | Yes | — | — |
| 2. Varpoolfaye 30,000 BTU Electric Above Ground Pool | 30,000 BTU | Yes | — | — |
| 3. AQUASTRONG Swimming Pool Heater for Above Ground | 16,000 BTU | — | 72 lb | 3-year |
| 4. Oibath 35,000 BTU Full Inverter Pool Heat | 35,000 BTU | Yes | 98.1 lb | — |
MICOE 75,000 BTU Pool Heat Pump
It earns Best Overall with 75,000 BTU for pools up to 21,000 gallons, heating and cooling modes, and app control.
- Heat output: 75,000 BTU, the most here
- Phone app control
Good for
- Buyers who want app control for a 21,000 gallon pool
- Owners of pools who want heating and cooling modes
Skip it if
- You need a heater above 75,000 BTU
- You want a pool capacity above 21,000 gallons
It transfers heat from the surrounding air with a titanium heat exchanger for freshwater and saltwater systems. Heating runs from 46 to 104 degrees and cooling from 45 to 82 degrees, with auto-defrost for colder weather. It operates in outdoor temperatures from 32 to 109 degrees at approximately 53 dB, and the ABS cabinet resists UV exposure, corrosion, fading and cracking.
Varpoolfaye 30,000 BTU Electric Above Ground Pool
It earns Runner-Up with 30,000 BTU for pools up to 7,000 gallons, a COP of 5.8 and WiFi app control.
- Heat output: 30,000 BTU
- Phone app control
Good for
- Buyers who want WiFi control with scheduling from an app
- Owners of pools up to 7,000 gallons who want cooling too
Skip it if
- You need a heater above 30,000 BTU
- You want a pool capacity above 7,000 gallons
It uses a high-pressure compressor with a titanium heat exchanger for freshwater or saltwater pools. Heating runs from 46 to 104 degrees and cooling from 46 to 82 degrees, and it operates at 52 dB. WiFi control adjusts temperature, schedule and functions from an app, and it has 1.5 inch connectors with a 126 inch power cord.
AQUASTRONG Swimming Pool Heater for Above Ground
It earns Also Great with 16,000 BTU for pools up to 5,000 gallons, a COP of 5.5 and a 3-year warranty.
- Heat output: 16,000 BTU
- 3-year warranty stated
Good for
- Buyers who want a 3-year warranty with their heat pump
- Owners of pools up to 5,000 gallons who want dual-mode control
Skip it if
- You need a heater above 16,000 BTU
- You want a pool capacity above 5,000 gallons
It heats water between 41 and 104 degrees and cools between 41 and 83 degrees, with a thermostat accurate within 2 degrees. It operates at 38 dB with an intelligent auto-defrost system, and it comes with 1.25 inch hose adapters and 1.5 inch conversion kits. Installation completes in under 10 minutes, and it weighs 72 lb with a 3-year warranty.
Oibath 35,000 BTU Full Inverter Pool Heat
It earns Also Great with 35,000 BTU, full inverter control, and WiFi and Bluetooth control from a smartphone.
- Heat output: 35,000 BTU
- Phone app control
Good for
- Buyers who want Bluetooth control in addition to WiFi
- Owners of saltwater pools who want a titanium heat exchanger
Skip it if
- You need a heater above 35,000 BTU
- You want a heat pump lighter than 98.1 lb
It adjusts compressor output based on heating demand through full inverter technology, for heating and cooling. WiFi and Bluetooth control temperature from a smartphone, and the top-discharge design requires less clearance and fits more installation locations. It has a titanium heat exchanger with hydrophilic fin technology for freshwater and saltwater pools, and it includes two 1.5 inch PVC pipe adapters.
How to choose
Match BTU and pool gallons first
BTU output and pool gallons decide whether a heater fits your pool. The MICOE gives 75,000 BTU for pools up to 21,000 gallons, the Oibath gives 35,000 BTU, the Varpoolfaye gives 30,000 BTU for pools up to 7,000 gallons, and the AQUASTRONG gives 16,000 BTU for pools up to 5,000 gallons. Compare the BTU figure with the gallon figure for your pool before choosing, since the BTU figure and the gallon figure rise together across the picks that state both.
Heating and cooling ranges
A heat pump with heating and cooling modes covers warm and cool weather. The MICOE heats from 46 to 104 degrees and cools from 45 to 82 degrees. The Varpoolfaye heats from 46 to 104 degrees and cools from 46 to 82 degrees. The AQUASTRONG heats from 41 to 104 degrees and cools from 41 to 83 degrees. Check the range endpoints against the water temperatures you want before choosing.
Controls, noise and installation
Controls differ across these heat pumps. The MICOE uses app control through the mobile app and the onboard digital control panel. The Varpoolfaye uses WiFi control through an app for temperature, schedule and functions. The Oibath uses WiFi and Bluetooth control from a smartphone. The MICOE operates at approximately 53 dB, the Varpoolfaye at 52 dB and the AQUASTRONG at 38 dB. For installation, the AQUASTRONG includes 1.25 inch hose adapters and 1.5 inch conversion kits, the Oibath includes two 1.5 inch PVC pipe adapters, and the Varpoolfaye has 1.5 inch connectors.
FAQ
What pool sizes do the MICOE, Varpoolfaye and AQUASTRONG cover?
The MICOE covers pools up to 21,000 gallons, the Varpoolfaye covers pools up to 7,000 gallons, and the AQUASTRONG covers pools up to 5,000 gallons.
Do these heat pumps also cool pool water?
Yes. The MICOE, Varpoolfaye and AQUASTRONG state heating and cooling ranges, and the Oibath has a heating and cooling system.
What noise figures do the MICOE, Varpoolfaye and AQUASTRONG state?
The MICOE operates at approximately 53 dB, the Varpoolfaye at 52 dB and the AQUASTRONG at 38 dB.
Can I control these heat pumps from a phone?
The MICOE, Varpoolfaye and Oibath each offer app control from a smartphone, and the Oibath adds Bluetooth control.
