Hayward HeatPro 90,000 BTU Heat Pump | W3HP21004T
This is a heat-only configuration. Do not assume a HeatPro family cooling or cold-plunge feature applies to this model. No. Heat-pump output and efficiency change with ambient conditions. Compare the rated test conditions and operating limits with your climate and heating expectations. Use the exact-model installation and operation manual below. Have a qualified professional evaluate installation requirements and diagnostic codes; do not substitute instructions from another heater generation. Hayward lists 3-year parts coverage for W3HP21004T. Labor coverage is not listed. Eligibility and exclusions are subject to the applicable Hayward warranty terms. Use the manufacturer downloads on this page for setup, operation and maintenance. Additional exact-model resources are available on Hayward’s product support page. This listing is for Hayward W3HP21004T. Match the complete model number before ordering; a similar model name does not establish identical fit, features or warranty.Product FAQs
Does this model cool the pool too?
Will it heat the same way in cold weather?
Where should installation and diagnostic work start?
What warranty applies to this W3 model?
Where can I find manuals and product support?
Which exact model is this?
Delivery and Shipping
Delivery and Shipping
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Description
Description
Match circulation to your pool
Hayward W3HP21004T uses HeatPro electric heat-pump technology to transfer warmth from the surrounding air into circulating pool water. It is a practical option for maintaining swimming temperature when the local climate and available operating time suit a heat pump.
Why choose this model?
Heat from ambient air
The refrigeration system transfers available air-side heat to the pool water; performance changes with weather and water temperature.
Temperature control
Use the unit’s control panel to set the desired water temperature and review operating information.
Plan for your climate
Size the heater for pool surface area, exposure and swimming expectations rather than choosing on pool gallons alone.
Before you order
Have a qualified installer check electrical capacity, equipment-pad placement, airflow clearance and water flow. Match the exact heating or cooling model; family brochures describe options that are not present on every HeatPro.
See Specifications for technical details and Product FAQs for buying and ownership answers. Use Resources & PDF Downloads for the linked manufacturer documents.
Specifications
Specifications
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SKU
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UPC or GTIN
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Product Type
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Size/Connection
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Materials
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Power Source
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Dimensions33.6 in, 30.5 in, 37 in
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Weight
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Warranty
Product Warranty
Product Warranty
We want you to have quick and easy access to warranty information for all the brands we carry. Please click on the links below to view each manufacturer’s warranty page:
- Pentair Warranty
- A&A (Pentair In-Floor) Warranty
- Fluidra Warranty (Zodiac / Jandy / Polaris / Caretaker)
- Paramount Warranty
- BlueSquare Warranty
- Hayward Warranty
- All Other Manufacturer Warranties
Note: Warranty coverage, registration, and service terms are provided directly by the manufacturer. Please review the details carefully to ensure proper understanding of coverage and claim procedures.
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Payment & Security
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