Best Pool Heat Pumps for Efficient, Consistent Heating
Compare five electric pool heat pumps by rated output, operating style and installation needs—without confusing ideal-condition test ratings with real-world heating speed.
Explore our picks ↓See full comparisonBest pool heat pumps by heating need
Choose based on climate, pool surface area, cover use, desired temperature, electrical capacity and heating season. These are use-case selections—not hands-on tested rankings.
Pentair UltraTemp 90
Heat only
A mid-size electric heat pump with a published 90,000 BTU/h warm-weather rating and a conventional installation footprint.
Hayward HeatPro 110
Heat only
A 110,000 BTU/h heat pump suited to buyers comparing conventional full-size outdoor units.
Raypak Crosswind 65-I
Inverter heat pump
A compact inverter-driven unit for smaller heat loads and owners who prioritize adjustable operation.
Raypak Crosswind V
Vertical-discharge heat pump
A vertical-discharge heat pump with 118,000 BTU/h listed output and a relatively compact pad layout.
Hayward HeatPro 140
Heat only
A higher-capacity traditional heat pump for larger heating loads when the electrical supply and pad support it.
Pool heat pump comparison: output, efficiency and trade-offs
Published capacities and COP values are not directly comparable unless test conditions match. Warm-air ratings below are manufacturer-published; cold-weather output will be lower.
| Heat pump | Type | Rated output | Electrical / controls | Main trade-off | Details |
|---|---|---|---|---|---|
| Pentair UltraTemp 90 | Heat only | 90,000 BTU/h · COP 5.8 | 208–230 V, single-phase | Not a fast-recovery gas heater; electrical and clearance requirements are significant. | Review |
| Hayward HeatPro 110 | Heat only | 110,000 BTU/h · COP 5.7 | 230 V, single-phase | Output drops in cool weather; allow adequate pad and airflow clearance. | Review |
| Raypak Crosswind 65-I | Inverter heat pump | 61,000 BTU/h · COP 5.3 | 208–230 V, single-phase | Lower rated capacity than full-size units; verify its temperature recovery against your pool and climate. | Review |
| Raypak Crosswind V | Vertical-discharge heat pump | 118,000 BTU/h · COP 6.1 | 208–230 V, single-phase | Check overhead clearance, service access and which Crosswind V variant the dealer quotes. | Review |
| Hayward HeatPro 140 | Heat only | 140,000 BTU/h · COP 5.7 | 230 V, single-phase | Larger electrical and installation demands; the published warm-air capacity does not apply in cold weather. | Review |
Detailed pool heat pump reviews
A heat pump moves heat from outdoor air into pool water. Every unit needs adequate airflow, circulation and electrical service; consult current manufacturer documentation before purchase.
Pentair UltraTemp 90
A mid-size electric heat pump with a published 90,000 BTU/h warm-weather rating and a conventional installation footprint.
80°F air/80°F water/80% RH: 90,000 BTU/h; COP 5.8.
Not a fast-recovery gas heater; electrical and clearance requirements are significant.
Technical Specifications
What matters in everyday operation
A mid-size electric heat pump with a published 90,000 BTU/h warm-weather rating and a conventional installation footprint. 80°F air/80°F water/80% RH: 90,000 BTU/h; COP 5.8. These figures reflect published conditions rather than an independent field test. Use a heat-loss calculation for sizing.
Pool heat pumps require sufficient filtration flow and free air circulation. Output and efficiency fall as conditions change; compare cold-weather performance when extending the swim season.
Best reason to consider: A mid-size electric heat pump with a published 90,000 BTU/h warm-weather rating and a conventional installation footprint.
Check PriceThis button opens an Amazon search for the exact model. Some heat pumps are dealer-installed and may not be offered on Amazon; verify seller authorization and warranty.
Hayward HeatPro 110
A 110,000 BTU/h heat pump suited to buyers comparing conventional full-size outdoor units.
Hayward lists 110,000 BTU/h and COP 5.7 at 80°F air/80°F water/80% RH.
Output drops in cool weather; allow adequate pad and airflow clearance.
Technical Specifications
What matters in everyday operation
A 110,000 BTU/h heat pump suited to buyers comparing conventional full-size outdoor units. Hayward lists 110,000 BTU/h and COP 5.7 at 80°F air/80°F water/80% RH. These figures reflect published conditions rather than an independent field test. Use a heat-loss calculation for sizing.
Pool heat pumps require sufficient filtration flow and free air circulation. Output and efficiency fall as conditions change; compare cold-weather performance when extending the swim season.
Best reason to consider: A 110,000 BTU/h heat pump suited to buyers comparing conventional full-size outdoor units.
Check PriceThis button opens an Amazon search for the exact model. Some heat pumps are dealer-installed and may not be offered on Amazon; verify seller authorization and warranty.
Raypak Crosswind 65-I
A compact inverter-driven unit for smaller heat loads and owners who prioritize adjustable operation.
Raypak lists 61,000 BTU/h, COP 5.3 and 208–230 V input for the 65-I.
Lower rated capacity than full-size units; verify its temperature recovery against your pool and climate.
Technical Specifications
What matters in everyday operation
A compact inverter-driven unit for smaller heat loads and owners who prioritize adjustable operation. Raypak lists 61,000 BTU/h, COP 5.3 and 208–230 V input for the 65-I. These figures reflect published conditions rather than an independent field test. Use a heat-loss calculation for sizing.
Pool heat pumps require sufficient filtration flow and free air circulation. Output and efficiency fall as conditions change; compare cold-weather performance when extending the swim season.
Best reason to consider: A compact inverter-driven unit for smaller heat loads and owners who prioritize adjustable operation.
Check PriceThis button opens an Amazon search for the exact model. Some heat pumps are dealer-installed and may not be offered on Amazon; verify seller authorization and warranty.
Raypak Crosswind V
A vertical-discharge heat pump with 118,000 BTU/h listed output and a relatively compact pad layout.
Raypak lists 118,000 BTU/h, COP 6.1 and 2-inch water connections for this Crosswind V configuration.
Check overhead clearance, service access and which Crosswind V variant the dealer quotes.
Technical Specifications
What matters in everyday operation
A vertical-discharge heat pump with 118,000 BTU/h listed output and a relatively compact pad layout. Raypak lists 118,000 BTU/h, COP 6.1 and 2-inch water connections for this Crosswind V configuration. These figures reflect published conditions rather than an independent field test. Use a heat-loss calculation for sizing.
Pool heat pumps require sufficient filtration flow and free air circulation. Output and efficiency fall as conditions change; compare cold-weather performance when extending the swim season.
Best reason to consider: A vertical-discharge heat pump with 118,000 BTU/h listed output and a relatively compact pad layout.
Check PriceThis button opens an Amazon search for the exact model. Some heat pumps are dealer-installed and may not be offered on Amazon; verify seller authorization and warranty.
Hayward HeatPro 140
A higher-capacity traditional heat pump for larger heating loads when the electrical supply and pad support it.
Hayward lists 140,000 BTU/h and COP 5.7 at its 80°F/80°F/80% RH test condition.
Larger electrical and installation demands; the published warm-air capacity does not apply in cold weather.
Technical Specifications
What matters in everyday operation
A higher-capacity traditional heat pump for larger heating loads when the electrical supply and pad support it. Hayward lists 140,000 BTU/h and COP 5.7 at its 80°F/80°F/80% RH test condition. These figures reflect published conditions rather than an independent field test. Use a heat-loss calculation for sizing.
Pool heat pumps require sufficient filtration flow and free air circulation. Output and efficiency fall as conditions change; compare cold-weather performance when extending the swim season.
Best reason to consider: A higher-capacity traditional heat pump for larger heating loads when the electrical supply and pad support it.
Check PriceThis button opens an Amazon search for the exact model. Some heat pumps are dealer-installed and may not be offered on Amazon; verify seller authorization and warranty.
How to choose a pool heat pump that fits your climate and pool
1. Calculate heat loss before comparing BTUs
Pool surface area, target temperature, local weather, wind and cover use determine the heating load. A pool cover often has a major effect on overnight heat loss.
2. Compare COP at the same test conditions
COP describes heat delivered relative to electrical energy consumed under a defined test. Warm, humid-air COP cannot predict a cold evening’s performance.
3. Understand heating time and cold-weather limits
Heat pumps typically warm water more gradually than gas heaters. Output falls as outdoor temperatures decline; verify the operating temperature range and defrost behavior.
4. Check electrical capacity and installation clearances
Most full-size units require a dedicated 208–230 V circuit, correctly sized protection, bonding and manufacturer-specified free airflow. Use a qualified installer.
5. Choose inverter or conventional operation
Inverter systems can modulate output, while conventional units typically operate at fixed compressor output. Compare controls, serviceability and your actual use pattern.
6. Account for service, warranty and local climate
Compare installed cost, regional service coverage, corrosion exposure, parts and electrical operating costs rather than relying on a single COP figure.
Pool heat pump pre-purchase checklist
For cool-season heating or rapid spa temperature recovery, a gas heater or hybrid strategy may fit better. A heat pump is most attractive when steady maintenance heating is the goal.
How to estimate pool heat pump operating cost
Electrical input (kW) × operating hours × local electricity rate ($/kWh) gives a rough cost estimate. Actual runtime depends on heat loss, setpoint and weather; COP and BTU/h are not the same as electrical input.
Frequently asked questions
Are pool heat pumps cheaper to run than gas heaters?
Often for maintaining a swimming temperature in suitable weather, but fuel rates, electricity prices, climate and usage determine the result. Compare actual installed and operating costs.
Does a higher COP always mean faster heating?
No. COP measures efficiency under test conditions; heating speed depends on delivered BTU/h relative to pool heat loss and water volume.
Can a heat pump warm a pool in winter?
Some can operate in cooler weather, but capacity falls as air gets colder. Check the exact model’s operating limits and cold-weather performance.
How long does it take a pool heat pump to heat water?
It varies widely with pool volume, surface area, starting temperature, cover use and outdoor conditions. Avoid promises based only on nameplate BTU/h.
Should I use a solar blanket with a heat pump?
A cover can substantially reduce evaporative heat loss, especially overnight. It can make a major difference to both heating time and operating cost.
Is an inverter pool heat pump always the best choice?
Not necessarily. Modulation can help for steady heating, but installer support, weather suitability, capacity and price matter more than the inverter label alone.
Final recommendation
Best conventional mid-size choice: Pentair UltraTemp 90 for buyers seeking a documented 90,000 BTU/h-class unit and local Pentair support.Best compact inverter option: Raypak Crosswind 65-I for smaller heat loads where the published capacity fits the heating calculation.Best higher-output option: Hayward HeatPro 140 for larger loads when the required electrical service and installation space are available.