By Hayward Pool Products
Model # W3HP31005T
Warranty 1-Year Parts-Only Warranty
Dimensions 31.5 x 40.2
Enjoy efficient pool heating and cooling with the Hayward HeatPro W3HP31005T Heat Pump. Designed for both new pool construction and aftermarket installations, this 100,000 BTU Heat/Cool heat pump delivers reliable temperature control, exceptional energy efficiency, and industry-leading quiet operation in a compact, space-saving design.
The HeatPro features a corrosion-resistant titanium heat exchanger that provides outstanding protection against saltwater and harsh pool chemicals, making it an excellent choice for saltwater pool systems. Its exclusive Ultra Gold evaporator coil offers superior resistance to coastal corrosion, helping extend equipment life in challenging environments near oceans and salt air.
With a high Coefficient of Performance (COP) rating of 6.4, the HeatPro efficiently transfers heat from the surrounding air into your pool water, reducing operating costs while maintaining comfortable swimming temperatures. The Heat/Cool functionality allows you to warm the pool during cooler months and cool the water during hot summer periods for maximum comfort throughout the season.
The compact round design takes up less equipment pad space and easily fits through standard gates, making installation simpler than many traditional heat pumps. Quiet operation, lightweight construction, and standard 2" x 2-1/2" CPVC union connections further enhance installation flexibility and long-term ownership value.
Whether you're extending your swim season, maintaining ideal water temperatures, or cooling an overheated pool, the Hayward HeatPro delivers dependable performance, energy savings, and lasting durability.
Features
Specifications
Benefits of the Titanium Heat Exchanger
I do not currently have a heater. I have a Hayward Super pump 1 1/2 HP. Can this heater be plumbed into my current system, in other words, my pump runs wide open when on, will this work with this type of heater or do I need a variable speed pump ?
Reply
Hello. The minimum flow of 30gpm is required to ensure sufficient heat removal from the heat pump condenser, therefore avoiding overheating the unit. The heat pump is designed for nominal flows of 47gpm through the condenser. Attached please find a copy of the W3HP31005T Installation & Operations Manual. Please note the information contained in the Install/Piping Section, page 12. INSTALLATION & OPERATIONS MANUAL A pool pump that is rated at or below this heater's minimum flow rate of 30gpm should not be utilized. Hayward Super Pump Performance Data rates the 1 1/2 HP model at approx. 65gpm with 50 Feet of Head.
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I currently have a Hayward Heat Pump Model # HP21002 and it will no longer hold a freon charge. I'm looking to replace it with this model. My pool has about 32k gallons. It is a 20x40 in ground. Is this model looks compatible to what I currently have. I just want to be sure before i order it.
Reply
Hello Marty. The Hayward HeatPro Heat Pump, 100K BTU - W3HP31005T is a Heat/Cool unit and is rated 16K BTU less than the Hayward model HP21002. The reduction in BTUs may result in slightly longer (comparatively) heating cycles. The W3HP31005T compact design has the same footprint as the HP21002. If the COOL function is not a priority and the installation site has additional room, you may wish to consider a HEAT only Heat Pump such as the Raypak Classic Series Heat Pump 140,000 BTU - 016033 or the Raypak Classic Series Heat Pump 119,000 BTU - 016015
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i HAVE THE HP31005T WHAT SIZE BREAKER DO I NEED
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Hello Joe. Attached please find the Hayward HP31005T I/O Manual Please reference Table 1: Specifications, page 5. The HP31005T Heat Pump requires a minimum circuit ampacity (amperage) of 37 amps, a recommended breaker size of 40 amps, and a maximum fuse breaker size of 60 amps.
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My pool pump runs on a mechanical timer. Is there an auto shut off for this unit when the pool pump turns off? Do I need to manually turn off the heat pump when pool pump is not running?
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Hello. Attached please find the IN GROUND POOL/SPA HEAT PUMP HEATERS INSTALLATION & OPERATIONS MANUAL Please reference Sections - Water Piping - General, page 12, and Water Chemistry - Water Flow Through Heater, page 19. Water must be flowing through the heater at the minimum rated flow rate during operation. These heat pumps are designed for nominal water flows of 47 gpm through the condenser. A minimum of 30 gpm is required. When the pool pump is Off, the heat pump's internal flow switch is open and does not allow the heat pump to operate.
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