Hayward Pool Heat Pumps Comparison in 2024

An electric heat pump pool heater is a reliable and low-cost solution for extending your swimming season. In general, they are far more economical to operate than gas heaters. However, you must choose a quality heat pump to enjoy hassle-free, dependable pool heating for years to come.

Hayward HeatPro heat pump pool heaters are known for their ease of installation, efficiency, and extreme corrosion resistance. The enclosure, heat exchanger, and evaporator employ only highly corrosion-resistant materials including gold, titanium, and stainless steel to ensure long life. A super-quiet scroll compressor, profiled fan blades, and an acoustic cover also guarantee quiet running.

Our three Hayward pool heat pump reviews tell you all you need to know to select the Hayward pool heat pump for your size pool. They are sure to give you long-lasting satisfaction.

Note that our pool size recommendation is based on the pool area and water capacity, but several other variables affect pool heating such as wind, sun exposure, and desired temperature.

Hayward Pool Heat Pumps:

1. Hayward W3HP21404T HeatPro 140,000 BTU Pool Heat Pump for In-Ground Pools

The swimming pool heat pump for mid-size pools is the W3HP21124T HeatPro pool heat pump. This high-efficiency 140,000 BTU heat pump uses 80 percent less energy than a natural gas heater by extracting heat from the surrounding air.

It features industry-leading anti-corrosion construction including injection-molded cover panels, a titanium heat exchanger, and Ultra-Gold evaporator fins that withstand high heat/humidity or coastal climates. It’s a perfect heater for saltwater pools.

The bright LED display and push-button controls simplify temperature settings and status readouts. The internal pressure monitor synchronizes operation with your existing pool filter pump.

Thanks to noise-dampening outer panels, profiled fan blades, and its scroll compressor, this is one of the quietest pool heaters our Hayward pool heat pump reviews discovered.

The Smart Way to Heat Your Pool

Hayward heat pump pool heaters for inground pools are a smart purchase for pool owners looking for reliability, durability, and lower heating costs. The W3HP21124T Pool Heater is ideal for larger pools or for heating smaller pools more quickly. Use a cover at night for the best performance.


  • 140,000 BTUs output
  • Works best for pools up to 400 sq. ft. / 35,000 gallons
  • Minimum operating air temperature: 50F
  • 2″ x 2-1/2″ Unions plumbing connections
  • Product Dimensions: 38 x 29.5 x 48 inches


  • Durable anti-corrosion construction and materials
  • Whisper when running
  • Sized for most backyard, in-ground pools


  • Outer panels could be sturdier
  • Requires 6 feet of overhead clearance

2. Hayward W3HP50HA2 HeatPro Heat Pump

Looking for economical above-ground swimming pool heat pumps? You just found your perfect match. The Hayward W3HP50HA2 HeatPro Heat Pump can also be used for smaller in-ground pools as well. It features a compact installation footprint and needs no overhead clearance.

It utilizes the anti-corrosion design available, which extends its working life even in hot/humid or coastal climates that are brutal on lesser pool heaters. A titanium heat exchanger, Ultra-Gold evaporator fins, vinyl-covered fan blades, and stainless steel hardware make it compatible with saltwater pools.

A programmable timer lets you set operations for the most convenient times. An internal pressure sensor only allows running when the pool filter pump is on. There is even a cooling mode built-in.

Right-Sized for Your Pool or Spa

According to our above-ground pool heat pump reviews research, the Hayward W3HP50HA2 wins hands down for cost, reliability, and durability especially compared to natural gas or propane heaters. For smaller in-ground or above-ground pools and spas, the Hayward W3HP50HA2 is your most economical choice.


  • 45,000 BTUs output
  • Recommended for pools up to 125 sq. ft. / 13,000 gallons
  • Minimum operating air temperature: 50F
  • 20A 220V circuit required
  • 1.5″ CPVC plumbing connections
  • Dimensions: 44 x 26 x 18.5 inches


  • Durable anti-corrosion construction and materials
  • Whisper quiet
  • Sized for most backyard, in-ground pools


  • Cannot heat if the ambient temperature is below 50F

3. Hayward W3HP21004T HeatPro 95,000 BTU Pool Heat Pump for In-Ground Pools

The W3HP21004T Hayward heat pump pool heater is the most efficient, quietest way to heat smaller pools. It is easy to install and comes with a full set of hook-up accessories. Any additional parts required are easy to source locally.

The W3HP21004T is thoroughly engineered to defeat pool heater enemy #1: corrosion. It features an Ultra-Gold evaporator fin, titanium heat exchanger, and sturdy injection-molded plastic panels. Timer and temperature settings are via a digital panel. Operation is automatic with an internal pressure sensor that turns the heat pump on and off with the pool’s filter pump.

Energy, Quiet, and Reliable

The Hayward W3HP21004T HeatPro is the inground pool heat pump for smaller pools or spas. It is a long-life, environmentally friendly, energy-efficient solution that maintains pool warmth throughout the swimming season with whisper-quiet operation. Use a solar pool cover at night to reduce daily re-heating time.


  • 95,000 BTUs heat output
  • Minimum operating air temperature: 50F
  • 2.5″ CPVC plumbing connections
  • Dimensions: 31 x 40 x 35 inches


  • Superior corrosion resistance
  • Economical to operate
  • Super quiet when running


  • The drip pan should be larger to catch all condensation

Buy now for Economical Poolside Leisure

Looking for the ideal pool heater that combines the anti-corrosion engineering, energy efficiency, and affordability is not a trivial task. But thanks to our Hayward pool heat pump reviews, you are now equipped with the knowledge to make an informed decision on the pool heat pumps for sale that fit both your budget and your pool.

All that is left for you to do is purchase the pool heat pump heater that is right for you. Soon you can look forward to an extended season of relaxation and exercise in just-right temperature water whether your pool or spa is small, big, or in-between.

It is a decision you will not regret thanks to Hayward’s well-deserved reputation for building the most reliable, efficient, and whisper-quiet pool heaters on the market today. Buy now with confidence.

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