Name: HeatPro MCHX Series Heat Pump, 120,000 BTU, Heat+Chill
SKU: HP31205T
Availability: InStock

Features

Hayward continues its position as the industry leader in innovation with the introduction of the new HeatPro Series of electric heat pumps that utilize industry-first microchannel technology engineered to get your pool water to the perfect temperature. If you are looking to warm your water to extend swim season, cool your water in warm or arid climate conditions, or chill your water down to 40ºF for a cold plunge, we have the ideal lineup including three heat only options and three heat+chill options.

Features and Benefits

Chills down to 40°F: Chills to low temperatures so you can get all the benefits out of your next cold plunge*
Industry-Leading Cooling Capacity: 30% increased cooling capacity compared to competitive technology is ideal for desert regions or warm climates*
Improved Heating in Cool Weather: A patent-pending defrost algorithm provides improved heating capacity below 50 degrees Fahrenheit so you can extend swim season
Robust Coil Structure: Protects against fin damage during installation and outdoor impacts
Best in Class Corrosion Resistance: Trivalent Chromium Process (TCP) coating developed in connection with the United States government for durability in the harshest climates
Weight Reduction: Up to 50 pounds lighter than traditional evaporator coils
Less Complexity: 85% reduction in braze joints means fewer leak opportunities
Less Refrigerant: Significant reduction in refrigerant means lower environmental impact
New Degree of Control: Add Omni automation for remote temperature control and intuitive scheduling
Lower Panel Loading: 40 amp breaker can be used on 110K and 120K BTU/hr units

NOTE: *Heat+Chill models only

EXPERT LINE products can only be purchased through your local pool professional or in-store. Exclusions, other terms, and conditions may apply.
3+ Year Parts and Labor Warranties*

*When sold by a Hayward Rewards® partner. Exclusions, other terms and conditions may apply.

Active Defrost	Yes
Application	New Construction, Renovation
Boost Mode	No
Brand	Hayward
Channel	Expert Line
Compressor Speed	Single-speed
Cooling Capability	Yes
GTIN	610377424547
Heating Capacity (BTU/hr)	120,000
Hertz - Heaters	60 Hz
Kilowatts	35 kW
Warranty - Labor	2-year
Low Ambient Operation	Yes
Master Carton Qty	1
Maximum Breaker Size (Amps)	40
Minimum Operating Temperature	40 °F
Warranty - Parts	5-year
Phase - Heaters	1
Platform	Square
Pool Type	In Ground
Product Dimensions	44 " x 30.5 " x 33.6 "
Product Height	44 in
Product Length	33.6 in
Product Weight	240 lb
Product Width	30.5 in
Quantity	1
Rear Clearance - Heaters	12"
Refrigerant	Yes
Series Heaters	HeatPro MCHX Series
Shipping Dimensions	50 " x 31.5 " x 36 "
Shipping Weight	250 lb
Side Clearance - Heaters	12"
Silent Mode	No
Sub Brand	N/A
Vertical Clearance - Heaters	72"
Voltage - Heaters	230V

Questions & Answers

13 answered question(s)

William Verified User

06/24/26

Q: Can you please inform me if the OMNIHUB can control this for both heating and cooling functions. The HUB only has 1 LV connection on the board and I was told that there should’ve been an HUA connection on the heater but there isn’t.

A:

Hi, the OmniHub cannot control this heat pump in both heat and cool. It requires a low voltage relay for each function.

By Hayward Support

Fernando Verified User

06/24/26

Q: Is it appropriate for use in beach houses? or would Heat Pro be better?

A:

It will work fine in coastal applications.

By Hayward Support

Theodore Mahon Verified User

06/24/26

Q: I have a spa that is about 13,500 gallons. The contractor installed the Hayward Heat Pro model # HP31405T. He told me that if the outside temperature is 50 degrees or below that it will go into defrost mode and will not heat the water. We want to use the spa during the winter in NW Florida and it will frequently drop below 50 in the evenings. Is this true, and if so is there anyway to override this....we want to use our beautiful new spool/spa during cool nights and days!!!

A:

Hi, the heat pump will go into defrost mode when it needs to, but it will not stay in defrost mode. It is designed to "defrost" the coil surrounding the unit, and then it will go back into heating mode. That being said, heat pumps are not designed...

By Hayward Support

Joel V Verified User

06/24/26

Q: Do you make a heat pump that uses the pool water in the condenser to chill the water for the cold plunge?

A:

Hi, this heat pump can cool the water in a small plunge pool to 40 degrees! The HP31205T is a good option for that.

By Hayward Support

Kristin Verified User

06/24/26

Q: Hello, do you sell a pool chiller only? Don’t want the heater.

A:

HI, we do not sell a chiller only at this time.

By Hayward Support

Jeremy Utley Verified User

06/24/26

Q: Will the unit raise copper levels in a pool?

A:

Hi, no it will not. The only metal that comes in contact with the pool water (in our heat pumps) is titanium.

By Hayward Support

Koty Verified User

06/24/26

Q: What would be the appropriate size heat pump for a 22-24k gallon pool?

A:

Hi, we would recommend the HP21405T for a heat only version or the HP31405T for a heat cool model.

By Hayward Support

Steve Verified User

06/24/26

Q: How or where can a temperature probe be installed to be used with pool automation?

A:

Hi, the temperature probe would be installed in the inlet water line. Hi, for help with this contact a local Hayward Authorized Service Center. You can find a list of them by clicking on the Dealer Locator tab on the home page of our website Hayward....

By Hayward Support

Sam Nasello Verified User

06/24/26

Q: I’ve only had this a few weeks and it is giving me a HP indicator and shutting down. What should I do. Thanks

A:

Hi, check to ensure you have sufficient waterflow through the heat pump. Otherwise, For help with this contact a local Hayward Authorized Service Center. You can find a list of them by clicking on the Dealer Locator tab on the home page of our website...

By Hayward Support

Rob Verified User

06/24/26

Q: Should I purchase a HP31205T or aHP31204t for my 15,000 gallon pool in Charleston SC.? I also have a HDF400 to heat the water.

A:

Either of these heat pumps will do a great job for this size pool.

By Hayward Support

Dominic Verified User

06/24/26

Q: The omni controller can't be set below 55 degrees. How do achieve lower temperatures down to 40 degrees? Is there a firmware update?

A:

A firmware update will be available soon to allow the setpoint to go down to 40 degrees.

By Hayward Support

Kim Weiler Verified User

06/24/26

Q: customer is asking what are the running decibels for this unit (how loud does it run) wants to install near their outdoor kitchen.

A:

Hi, there is not a sound testing protocol for pool heat pumps, but ours run around 60dB at 10'

By Hayward Support

Brent Verified User

06/24/26

Q: Is this electric?

A:

Hi, yes it is. It requires a 240 volt circuit.

By Hayward Support

HeatPro MCHX Series Heat Pump, 120,000 BTU, Heat+Chill

Features

Manuals

Literature

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Questions & Answers

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HeatPro MCHX Series Heat Pump, 120,000 BTU, Heat+Chill

Features

Manuals

Literature

Design Files

Line Drawings

Questions & Answers

Related Parts

Americas

United States

Canada

Latin America

Europe

United Kingdom

France

Germany

Spain / Portugal

Italy

Oceania

Australia

New Zealand

Other Regions

Asia

Africa

Middle East