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Hayward W3HP50HA Pool Heat Pump, 45,000 BTU, Horizontal Fan

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Hayward Swimming Pool Products and Heaters

Hayward HP50HA, Above Ground Pool Heat Pump - 45,000 BTU

Hayward’s HP50HA horizontal fan heat pump with 50k BTUs can efficiently heat small pools or above-ground pools up to 16,000 gallons.

Pools equipped with the HP50HA are designed to economically extend the swimming season. It will allow pool owners the opportunity to swim longer into the evening hours, earlier in the spring and later in the fall. Pool owners with smaller pools now have an efficient heating solution right-sized for their applications. The unit is simple to set-up as well, with continuous temperature display and single degree increments for your pool’s temperature. The electrical hook-ups are easily accessed and the system is compatible with Hayward, Goldline, Intermatic, AquaSwitch, AquaLink, and Compool control systems. The HP50TA is easy to maintain, with durable hardware complete with self-diagnostic software to monitor internal mechanisms.

Hayward HP50HA Features

Features & Benefits:

  • 50,000 BTU heating capacity
  • Uses less energy than a natural gas or propane heater
  • Also includes a cooling mode to help lower water temperature
  • High-efficiency titanium heat exchanger
  • Extremely quiet operation
  • Hot temperature defrost system to start in lower temperatures
  • Electronic, programmable timer

Hayward Energy Solutions




BTU Output, Standard Rating Conditions 80/80/80
45,000 BTU
COP, Standard Rating Conditions 80/80/80:

Model Specifications

Heat Only
Pool Type:
  • Above Ground
Refrigerant Type:
Display Controls:
Dual - Pool & Spa
Rotary 3.25 HP
Heat Exchanger:

Electrical Specs

60 Hz
Phase Type
Single Phase
208/230 v

Pool Water Flow

Water Flow Min/Max GPM:
30/75 GPM

Physical Specs

44.5" x 18.5" x 26.8"

Two (2) years for parts and one (1) year for labor.

Florida Only: Two (2) years for parts and (2) years labor.

Compressor: Five (5) year limited warranty on the compressor with parts and labor warranted for the first two (2) years and parts only warranted in the three (3), four (4) and five (5).

The titanium tube component of the heat exchanger has a ten (10) year warranty.

Download Owner's Manual for details.

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I have only used it once, it raised the water temp about 6 degrees an hour. I have a stand alone hot tub so I am waiting until the temp raises a little to get more enjoyment out of it.
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