?     Asked on 12/28/2016by Chris

What size pool will this heat/cool? and will it run a salted pool, mine is 25,000 gallons.
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A  Answered on 12/28/2016 by InyoPools Product Specialist Adam Y.

Good afternoon Chris, This unit will work, if you want the cooling feature. If the heat feature is more important than I would recommend the 140,000 BTU unit. Heat pumps pull heat from the air so if your in an area that is below freezing this is not for you. All Heat pumps have Titanium heat exchangers so this will hold up the best for salt pools. If you have any other questions feel free to call. We are open Monday through Friday 9am-6pm Eastern time.
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?     Asked on 4/4/2017by tom

Re: Hayward Heat Pro Heat Pump 120,000 BTU Heat/Cool - HP31204T my inground is about 25' x 14' and is 4.5' deep throughout. Is this the correct size for my pool? or would it be more efficient to get more BTU?
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A  Answered on 4/5/2017 by InyoPools Product Specialist Scott W.

What state do you reside in?
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?     Asked on 5/10/2017by Mike W.

will the Model HP31204T work ok with an above ground pool, water level above heat exchanger ?
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A  Answered on 5/10/2017 by InyoPools Product Specialist Scott W.

Yes, that heat pump will work great with an above ground pool. Just make sure you have the correct electrical hook ups for that heat pump.
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?     Asked on 5/18/2017by Wayne

1) looking for price / availability for a Hayward heat pump 140,000 btu , 60 amp . 2) Delivery to Courtenay , B.C.
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A  Answered on 5/20/2017 by InyoPools Product Specialist Lennox H.

Hi, Wayne. To view the current price of this unit which is USD click here > HP31204T. We're unable to ship this unit directly to Courtenay B.C., you will have to have the unit shipped to a freight forwarder of your choosing.
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?     Asked on 5/19/2017by Wayne

I'm trying to find proper size heat pump to replace my existing unit #HP21003T . I'd like to have a quote including shipping to Courtenay B.C. SN. 21120810005734001
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A  Answered on 5/20/2017 by InyoPools Product Specialist Lennox H.

Hi, Wayne. You can replace the HP21003T with the HP31204T or HP21254T. We're unable to ship this unit outside the continental USA. You will have to have the unit shipped to you using a freight forwarder of your choosing.
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?     Asked on 5/24/2017by Inyo Visitor

What does the code LP mean on the Screen
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A  Answered on 5/24/2017 by InyoPools Product Specialist Hector F.

The LP error code can mean that the low-pressure switch is having issues. Here is the manual where on page 17 you can view all of the issues and approaches.
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?     Asked on 6/5/2017by Inyo Visitor

Why is your picture of the HP31204T different than the one on the Hayward website? What are you really buying? http://www.hayward-pool.com/shop/en/pools/heatpro-120k-heat-cool-ahri-hp31204t
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A  Answered on 7/31/2017 by InyoPools Product Specialist Alex V.

Michael, The image of the HP31204T is accurate. Both images show the square version of the heat pump. 
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?     Asked on 9/13/2017by brian robin

i have inground pool 30 x approx 13 x 3.5' shallow/6' deep, roughly 12K-13K gallons, 120,000 heat/ cool or 140K heat should be the corrrect size?
 Reply

A  Answered on 9/13/2017 by InyoPools Product Specialist Patrick P.

Hi Brian, If you are in a warmer climate like Florida, California, Arizona, etc.. then this 120,000 BTU unit would be sufficient. If you are in a cooler climate like the Northeast or Midwest then I would suggest this Hayward 140,000 BTU Heat Pump but please note that the 140,000 unit does not have the cooling feature only heating.
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?     Asked on 9/13/2017by brian robin

yes, I am in Louisiana which is same climate. So if I only went with heat, I could go with 125,000 HP21254T
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A  Answered on 9/13/2017 by InyoPools Product Specialist Patrick P.

Hi Brian, Yes the 125,000 HP21254T Heat Pump would work great in Louisiana
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?     Asked on 9/13/2017by Inyo Visitor

which will be more efficient at 50° F which is typical a few day sin winter in louisiana
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A  Answered on 9/14/2017 by InyoPools Product Specialist Lennox H.

Hi. The Hayward Low Ambient model HP21104TC will be more efficient, It can operate as low as 40°. 
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?     Asked on 9/14/2017by brian robin

what about the electrical whip for the heat pump that is needed, is it included or buy separately?
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A  Answered on 9/14/2017 by InyoPools Product Specialist Lennox H.

Hi, Brian Robin. The whip is not included, it will have to be installed by an electrician. 
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?     Asked on 4/18/2018by tom somaine

how many gallons will the HP 31204t heat and or cool, and if your water temp is 70* how long will it take to get to 82*
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A  Answered on 4/22/2018 by InyoPools Product Specialist Lennox H.

Hi, Tom. This HP31204T Heat Pump can heat and cool a pool that is 10K gallons or more depending on several factors including your geographical. Those factors will also play into how fast it will this unit will heat your pool from 70° to 82°.
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?     Asked on 5/29/2018by Milo Aquatics

How many amps does the HP31204T draw? Do you have a recommended installer in Austin, TX?
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A  Answered on 5/29/2018 by InyoPools Product Specialist Hector F.

This unit can use between 48-60 amps and the max overload recommended breaker size is 60. We recommend using any certified pool contractor(CPC) for installation of these units. 
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?     Asked on 5/29/2018by Brad

We just finished our 20x40 pool and located in middle TN. I had the contractor install a 140k btu heater which works great but we have had a very unusual record heat this spring and the water is getting to hotter than I expected(heater off). I am considering selling the 140k heater and buying the heat/cool 120k btu. My question is given my location, is the 120k btu enough heater for early spring/fall? Thank you.
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A  Answered on 6/9/2018 by InyoPools Product Specialist Alex V.

Brad, This unit will not heat as quickly as the 140k but this is the largest unit that Hayward has that offers the cooling option. 
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?     Asked on 7/16/2018by Hamipool

Do you ship HP31204t to Saudi Arabia?
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A  Answered on 7/16/2018 by InyoPools Product Specialist Lennox H.

Hi, Hamipool. You will have to have the unit shipped to a freight forwarder so that it can be forwarded to Saudi Arabia.  
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?     Asked on 8/31/2018by Miguel Angel Colom

Can this unit be controlled remotely or via a controller?
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A  Answered on 8/31/2018 by InyoPools Product Specialist Lennox H.

Hi, Miguel. This unit can be wired to pool automation controllers. 
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?     Asked on 11/24/2018by Aashik Shrestha

what is the coefficient of performance of your largest heat pump. I need to heat 706,000 gallons of water and I need to know how much is it efficient in MIssissippi.
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A  Answered on 11/27/2018 by InyoPools Product Specialist Andy O.

Hello Aashik- The Hayward Heat Pro Heat Pump 120,000 BTU Heat/Cool - HP31204T will not work for your application if you have 706,000 gallons. You would more than likely require a couple of these units: AquaCal Great Big Bopper - Commercial 500k BTU 208-230V - BB500BRDSBNA.
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?     Asked on 1/6/2019by Ron

Will the Hayward 120, 000 btu heat/cool pump # HP31204T interface with the Hayward control panel # Command 4 (HPC4).
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A  Answered on 1/8/2019 by InyoPools Product Specialist Lennox H.

Hi, Ron. You will be able to adjust the temperature and from pool or spa feature, you will not be able to switch from Heat or Cool mode.
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?     Asked on 1/24/2019by Randal

I live near Houston, Texas. Following average temperatures apply: January 63° / 44° February 66° / 47° March 72° / 53° April 78° / 60 May 84° / 68° June 89° / 73° July 91° / 74° August 91° / 74° Sept 88° / 70° Oct 81° / 61° Nov 72° / 51° Dec 65° / 46° Humidity is typically above 90% in summer. Pool is 25K gallons. I would keep the pool at 88° (March thru early Nov) Is this heat pump a good fit?
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A  Answered on 1/25/2019 by InyoPools Product Specialist Michelle B.

Hello, The heat pump will continue heating the pool as long as the temperature is above 50 degrees.
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?     Asked on 4/10/2019by Inyo Visitor

What are the physical dimensions of the HeatPro heat pump - height, length and width.
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A  Answered on 4/10/2019 by InyoPools Product Specialist Michelle B.

Hello, The dimensions are 30¼ W x 34 D x 37 H. The weight is 240lbs.
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?     Asked on 4/28/2019by Eric

I have a built in jacuzzi attached to my pool. How hot does the heater get? Also, I live in Florida how cool does it get the water in the summer if in the cool mode?
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A  Answered on 4/30/2019 by InyoPools Product Specialist Lennox H.

Hi, Eric. This unit can heat to 104 degrees and cool to 50 degrees. 
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?     Asked on 5/2/2019by Michael

I have an 18,000 gallon 32x15 deep end 6ft. Live in SouthEastern NC close to Myrtle Beach, SC. Will this unit effectively heat and cool my pool...? Not just a little to take the edge off but effective temperature swings that are drastically noticeable when working...? I believe this is the biggest unit of this type Haywood manufactures, therefore - if this unit will not work as designed because my pool is to big or because of the climate in which I reside what unit do you recommend...?
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A  Answered on 5/3/2019 by InyoPools Product Specialist Lennox H.

Hi, Michael. This Hayward HP31204T model will only take the chill out of the water. Other models like the Raypak - R8450TI-E-HC, Pentair - UltraTemp 120 H/C or UltraTemp 140 H/C will heat your pool more effectively.  
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?     Asked on 5/7/2019by Kirk

I just purchased and installed the Hayward HP31204T - I cant get the ACP to go off so the heat function will work. The unit runs to cool but will not run to heat - what am I missing?
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A  Answered on 10/15/2019 by InyoPools Product Specialist Steve M.

This sounds like a warranty issue. In order to process the warranty for this unit, you will need to contact Hayward directly. They can be reached by calling 800.429.9273.
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?     Asked on 5/28/2019by Melissa

I bought the Hayward heat pump last season and haven’t installed it yet. I’m thinking of updating my de filter this year. Is there a filter that makes connecting the units easier? Should the the connections on the units line up? Or should one unit be higher or lower? My husband is trying to decide before pouring the cement pad.
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A  Answered on 6/20/2019 by Industry Professional

The inlet and outlets on this unit are lined up evenly. They can use any filter with this system because this is plumbed in after the filter.
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A  Answered on 6/19/2019 by Industry Professional

Any filter will work with this unit as long as it i sized correctly for the plumbing and pool size. The closer you can get your plumbing to a straight run the better.
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?     Asked on 7/15/2019by Scott See

I have an 18,000 gallon fiberglass pool. I need a combo heater/cooler. Is this Hayward product big enough to heat in cooler months and cool in hotter months?
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A  Answered on 7/16/2019 by InyoPools Product Specialist Kevin G.

Hello, could you please advise on the dimensions of your pool? Also, where are you located and are you trying to use your pool all year?
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?     Asked on 7/21/2019by Allen

How large of pool will this heat pump work on?
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A  Answered on 7/21/2019 by InyoPools Product Specialist Lennox H.

Hi, Allen. The answer is based on your geographical location and whether a cover will be used. 
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?     Asked on 11/10/2019by Jeffrey Borthick

Where is the serial number plate located on the HP31204t?
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A  Answered on 11/11/2019 by InyoPools Product Specialist Lennox H.

Hi, Jeffrey. The serial number is located in the service panel. 
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  • Commented on 11/11/2019 by Product Owner

    Is 'the service panel' in the unit itself, or is that the white 'brain box' on the wall? Please send a photo of you can, thanks!
     Reply


?     Asked on 6/21/2022by Caryl Marcus-Stape

What are the physical dimensions of this unit? And, If the pool gets too hot, how does the chiller work? I can't seem to find any information on how this unit cools.
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A  Answered on 6/22/2022 by InyoPools Product Specialist Craig C.

Hello Caryl.  The Hayward Heat Pump model HP31204T dimensions are 30.25" W x 34.0" D x 37.0" H.  Additional information can be viewed on the attached brochure.  Hayward HeatPro   Attached please find HP31204T heat/cool programming instructions     Setting an HP31204T to Heat Mode    Heat Pump Owner's Manual
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