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Home Pool Swimming Pool Heat Pumps & Chillers Hayward Heat Pumps Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T
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Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T

Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T Hayward HeatPro Heat Pump | 110K BTU | Round Platform | W3HP21104T
This item has been discontinued.

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  • An "Ultra Gold" corrosion-resistant evaporator fin increases durability in coastal environments
  • A vinyl-coated fan guard protects the fan against the elements and debris
  • Stainless steel hardware eliminates corrosion
  • A UV-resistant, injection molded shell resists rust and deterioration
  • Online part number W3HP21104T is the direct replacement for part number HP21104T.
Direct Replacement
Hayward HeatPro Heat and Cool Pump | 100K BTU | Round Platform | W3HP31005T
Hayward HeatPro Heat and Cool Pump | 100K BTU | Round Platform | W3HP31005T

Consistently Warm Water, Even When It's Cold Outside
Imagine if anytime you wanted to take a dip in the pool-early in the season, late in the fall or just one evening after dark-your pool's temperature was perfect! Hayward's HeatPro Heat Pump, a high-efficiency heater, gives you the ideal water temperature while using less energy than natural gas heaters. It offers an alternative way to heat your pool that is safe, reliable, and energy efficient.
To heat your pool water efficiently, the HeatPro takes the heat from the surrounding air and uses it to warm the water in your pool eliminating wasted energy. Its digital LED control panel provides an easy-to-read digital temperature display, and shows diagnostic codes for quick identification of components that might need service.
Designed with the consumer in mind, the HeatPro's round base and compact footprint is ideal for retrofit replacements, allows for easy installation, and has integrated hurricane tie-downs to meet local codes. Also, adding value is its ArmourCoil protected heat exchanger, which allows the water passing through the system to be heated and returned to the pool. With its precision electronic temperature control, the perfect water temperature is constantly maintained, providing continued energy savings. The HeatPro Heat Pump can save you up to 80% on your heating costs, paying for itself in just one year. Why not save money, savor your backyard oasis and be environmentally conscience-all while staying cool.
Hayward HeatPro heat pumps incorporate titanium counter-flow heat exchangers for unrivaled and uncompromising performance even under the harshest conditions. Other key features include: heavy-duty, super-quiet scroll compressors; durable injection-molded UV-resistant body panels that are impervious to rust and deterioration; stainless steel hardware; and a polyethylene screen to protect the evaporator coil from damage. Plus, Hayward HeatPro heat pumps are lightweight, compact and easy to install or service, making them ideal for both new pools and spas and existing system upgrades.
Brand Hayward
Sub Brand Heat Pro
Item Heat Pump
Series H-Series
Series H-Series
Heat Output BTUH 110,000
Coefficient of Performance 5.8
Refrigerant Model R410A
Voltage Rating 230 V
Minimum Circuit Ampacity 35 A
Maximum Breaker Size 50
Flow Rate 30 to 75 gpm
Control Type Digital Electric, Dual Thermostat
Cabinet Width 31-1/4 Inch
Cabinet Height 40 Inch
Cabinet Depth 31-1/4 Inch
Water Connection 2 Inch x 2-1/2 Inch Unions
Housing Material Stainless Steel

BTU Rating
Single Phase
Heat or Heat/Cool
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 5 answers
can I connect it myself if I have an electrician run a 220 line?
kevin m on Mar 1, 2017
BEST ANSWER: If you install It yourself you will lose the warranty
Will this heater work in Arizona (today 46% RH) looking to get temp to 75+ when its 70 outside in the day and 50 (or sometimes less)?
Rich B on Nov 2, 2017
How many gallons will this heat??
A shopper on Sep 3, 2021
BEST ANSWER: We have approximately 15,000 gallons in our pool and this heater does great. We have a 15.2 x 34.10 kidney shape and it will warm it within 4-5 hours
How many btu do I need for a 8000 gal pool?
Boatman on Apr 10, 2020
BEST ANSWER: If you bought the same I have a 110k btu, it will take 2 hours to heat up your pool 5 degrees. The 120k but is only 30 minutes longer.
Will it cool the water in summer?
A shopper on Feb 1, 2020
BEST ANSWER: No it will not cool the water
I m a retired builder contractor, I was in the business for more than 48 years, I disconnected myself the old unit and I m planning to buy and install the new one myself, I know is heavy, Do I loose the warrantee if I do it myself?
Nelson R on Mar 23, 2019
BEST ANSWER: Hayward requires a receipt of the installation by a licensed professional to get the full warranty. You may want to contact Hayward to see if you can qualify yourself to be under warranty.

Hayward - (888) 429-9273
I have a 12,000 gallon in-ground pool in Tampa Florid area. What size heat pump system do I need for my pool, to raise it 5-6 degrees in 3-4 hours?
robert d on Jun 22, 2021
How many BTU Heater for a 20,000 gallon in ground pool do I need?
Mercy M on Apr 19, 2020
What kind of fuel does it run on?
Peter M on May 4, 2019
5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Easy install
No problem. Easy install. Heat pump. Small. Lightweight.
April 10, 2020
over 3 years ago
Rated 5 out of 5
It does a great job!! Will heat our pool to a perfect temp within 4-6 hours.
September 3, 2021
over 2 years ago
Hayward Pool Products warranties all items sold over the internet for a period of one year, parts only, no labor, ONLY when purchased from a Hayward Authorized Online Reseller.
  • Salt cell replacements W3T-CELL15, W3T-CELL-9, and W3T-CELL-3 include a three year, parts only warranty, when purchased from a Hayward Authorized Online Reseller.
Pool Supply Unlimited is a Hayward Authorized Online Reseller.
For Hayward warranty registration information, and to submit online, please visit www.hayward-pool.com
This information was updated on 4/15/2020. For the most current information and full warranty policy please visit www.hayward-pool.com

 Adobe Acrobat PDF Warranty Information
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Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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