Why is my swimming pool heater leaking? - AquaCal Website (2024)

Why is my swimming pool heater leaking? - AquaCal Website (1)

  • AquaCal AutoPilot, Inc.

Your heat pump may not be leaking; it may just be condensation draining from the unit. When heating, heat pumps can produce upwards of 9 gallons of water an hour depending on the temperature and humidity conditions. This is a natural by-product of the heating process. It is a lot of water too, almost two 5 gallon buckets of water an hour!

So, do you have a leak or condensation draining from your heat pump? The methods below are simple, effective tools to help you figure that out!

1. Grab your pool chemical test strips or kit.
2. Test for the following items in your pool water: chlorine, salt, and stabilizer levels (be sure to note the levels).
3. Now test the water coming from the heat pump. It shouldn’t have chlorine, salt, or stabilizer in it. If it does, you may have a leak. We suggest trying the method below before calling a pool professional to check for a leak. Sometimes leaks can be hard to find and deceiving as to the origin.

Why is my swimming pool heater leaking? - AquaCal Website (2)

Why is my swimming pool heater leaking? - AquaCal Website (3)

METHOD 2 (Note: This method will help source leaks from all of your pool equipment.)

  1. Turn off the heat pump and all the other pool equipment.
  2. Let the area dry out so everything is completely dry.
  3. Once dry, keep the heater off, and turn all of your other pool equipment back on.
  4. Monitor the equipment area for the appearance of water continuously for 15 minutes, then once or twice every 15 minutes for two hours afterward.
    1. If water appears around the equipment: you have a leak somewhere, and it shouldn’t be hard to trace its origin. It could be from the pump, filter, or piping. We recommend calling your pool service company to verify its source.
    2. If everything is dry: turn on the heater. If water appears around the heater after running it for 10 – 30 minutes, you are seeing condensation draining from the heater. This is normal and to be expected. To double check, turn the heater off leaving the rest of the equipment running and everything should dry out again. Heat pumps will only produce condensation when running (heating).

If you determine that the leak is coming from your heat pump, give us a call to schedule an appointment so we can further troubleshoot and repair the unit.

Contact Us!

AquaCal AutoPilot, Inc.

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This Post Has 16 Comments

  1. Hi if you now the name o the link to found something for the condensation water fron the pool head pump tropical thank you GOB


    1. https://www.aquacal.com/wp-content/uploads/manuals/landingpage/air_source_user_hp9/en-us/Content/Resources/CURRENT/LTM0930.pdf

      On the Aquacal website, page 48 of the Superquiet owner’s manual discusses condensation. A heat pump can produce 8-10 gallons of condensation per hour depending on the humidity of the ambient air.


  2. Turned on my new TropiCal heat pump over the weekend and thought I had a leak. Thank you for the explanation on testing. I’m sure it is condensation because I’ve never had any water around my pool equipment prior to turning on the heater.

    Do you have any recommendations or a kit for installing a condensate line to move water away from the unit? I work hard to keep moisture away from my foundation and am fairly disappointed with the volume of water coming from the heat-pump. I’d like to install a line to move the water into the drain system that channels the water from my rain gutters and AC condenser to the street.


    1. Hi Forrest,

      Heat pumps can generate a lot of condensation, 6 – 8 gallons per hour. If you have a new cabinet style heat pump with the drain holes on each side, we make a condensate drain kit. Part number STK0202. If you have any questions, please call us at 727-823-5642.

      Aqua Cal tech support


  3. My brother has a pool in his house but he told me that he cannot use it because the heater does not work and the water is too cool. I found it interesting when you said that if you see water around the equipment is because there might be a leak. I will highly recommend him to contact a pool service company so that they can go and fix it.


    1. Hi Derek,
      When a heat pump is running and heating, it will generate a lot of condensation and you will notice water under the unit. If you notice water under the heat pump, and it is not heating, it’s probably a leak. Please call us at 727-823-5642.



  4. Good day, we had an aquacal unit for 12 years. Had a problem and the tech advised our options. We just installed a new aquacal heat wave. He told me about how to get a 150.00 credit, he gave me the reference number and serial number. He said I would need it for the rebate. Where do I go next?


    1. Hi Jon,
      If you paid an AquaCal technician $125 to evaluate your old heat pump, and you replaced the unit with a new AquaCal heat pump, we will refund your $125. We just need you to send a receipt of purchase for your new unit showing “paid in full” to customersupport@aquacal.com. Also include the new unit model and serial number. If you have any questions, please call us at 727-823-5642.

      AquaCal Customer Support


  5. I have a AquaCal Heatwave Superquiet. There is so much condensation leaking that when I walk in front of it within 6-10 feet of it, mud comes to the top of my feet. I dug 3 drainage ditches myself last fall. I am 65, retired female teacher. Is there any thing I can do to cut down the condensation? Thanks. Oh, I live in Central New York State. My pump thus the heater is in an area that is damp anyways.


    1. Good Afternoon Ms. Bordwell,
      Hope you are doing well. If you see this water whenever the pool pump is running & the heat pump is not running, then you may have a water leak in the heater.
      If you only see this when the heat pump is running, then we need to see about better condensation management. The most effective method would be to have a local Hvac company come out & place a condensation pan under the unit with a hole tapped and pvc piping to direct the condensation to another area where it will have less impact. Another possibility is to a trench around the pad for the heat pump & fill that with pea gravel to help with evaporation of the condensation.
      Please feel free to contact Tech Support at 727-456-7411 with further questions.
      Robert Brown
      AquaCal Tech Support


  6. When problems like this arise, I think it best to seek professional help. DIY tips can come in handy when you’ve got enough knowledge on something that you ought to do. However, for those who are inexperienced especially with heaters, a wrong turn may even lead to bigger problems. So for me the best option is to call for help.


    1. Hello Cherry,
      Thanks for posting.


  7. Wow these are some great DIY tips! My heater has been leaking for a while now so I’ll try this out and see what happens. Thanks!


  8. Turned power breakers off / turned back on
    Now Heat pump won’t Power On
    Where is in and off button?
    Nothing seems to work no power to
    Heat Pump


    1. Hello Ray,

      Please call us at 727-823-5642 for assistance.


  9. Heat pump not heating to shown temperature and there is leakage? Heat pump shows 98degrees F and in reality water temp still around 80degrees F??? This is above ground pool. My AquaCal unit has fan on top.


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Why is my swimming pool heater leaking? - AquaCal Website (2024)


Why is my swimming pool heater leaking? - AquaCal Website? ›

Your heat pump may not be leaking; it may just be condensation draining from the unit. When heating, heat pumps can produce upwards of 9 gallons of water an hour depending on the temperature and humidity conditions.

Why would my pool heater be leaking? ›

There are several reasons for a leaking gas pool heater. You might have a damaged heat exchanger, it might simply be due to low temperatures or you could have a gasket leaking or a loose connection. We recommend checking the gaskets first, as these are cheap and common repairs.

How long do AquaCal pool heaters last? ›

Affordability – you can heat a pool for about 25% of the cost of heating it with gas. AquaCal's heat pumps life expectancy: 12-15 years. You can afford to heat your pool for the entire swim season, not just intermittently.

How do I reset my AquaCal pool heater? ›

Simultaneously Press "Pool / Spa" button and "Up" button until the display shows 888. Release buttons. Reset is complete.

How do I find a leak in my pool heater? ›

An easy way to know for sure is to to turn off the pool heater but leave the pump and all other pool equipment running for a couple of hours. Check the area for water every 15 minutes or so. If water appears, use a chlorine test strip in it.

What causes a water heater to leak from the bottom? ›

The most common cause of water heater leaking is a damaged or failing pressure relief valve. This valve prevents pressure from building up in the water tank, and when it fails, hot water can start to leak out. Other potential causes could include: A cracked or corroded water heater tank.

How long is AquaCal warranty? ›

AquaCal pool heaters' warranty

One of our favorite features from AquaCal is the standard 2-year Labor Warranty. Unlike most pool heating companies, the AquaCal units come with a labor warranty that is completely executed by the manufacturer themselves (if you're located in Florida, like us).

Which is better, Hayward or AquaCal heat pump? ›

While Hayward pumps are reliable and globally recognized, investing in the best means choosing AquaCal for its unmatched efficiency, advanced features, and strong warranty protection. For a significant investment like a pool heat pump, AquaCal is the clear leader.

How many hours a day should I run my pool heater? ›

A bigger pool heater may only require two hours to have a pool nice and warm and a smaller heater made need three hours to get that same size swimming pool to a comfortable swim temperature. The type of swimming pool heater a homeowner has will also be a factor in when to run a pool heater.

How to clean an AquaCal heat pump? ›

Do not use chemicals on the display panel. Rinse the heat pump panels with fresh water, wipe, and buff panels using a dry soft cloth. Allow heat pump interior and surrounding equipment to "air-dry" for several hours prior to restoring electrical power.

What is the default code for AquaCal? ›

The code can be any number from “00” to “99”. The factory set lock code is “0”. Not pressing any buttons for 15-seconds will allow the controller to save the selection and return to the normal operating mode.

How to unlock AquaCal pool heater? ›

A numerical pass code is required to proceed. Press "UP" or "DOWN" arrow to enter save pass code. Press "POOL / SPA" button to unlock. If the user-lock code has been misplaced, please contact AquaCal ® for further assistance.

Why is my pool heater leaking? ›

The pool heater heat exchanger may be leaking because of chemical or sanitizer damage. The damage may be from winter freeze - usually leaking upon spring start-up, and usually on the return manifold, aka rear header. There could be a gasket leaking, or a loose connection to the pressure switch.

Where is my water heater leaking from? ›

The drain valve, located at the bottom of the tank, is the likely source of water heater leaks. Check the drain valve for escaping water. In the case that a small drip is occurring, a garden hose cap or sprayer makes a quick leak fix until the valve can be replaced.

How can I tell where my pool is leaking? ›

Finding the Leak
  1. Check Equipment. Give the equipment pad a thorough check. ...
  2. Wait for a Still, Clear Say. If no leak is found in the equipment, proceed to inspect the pool. ...
  3. Look for Cracks. ...
  4. Decide which Areas to Focus On. ...
  5. Turn Off any Pumps or Filtration Systems. ...
  6. Open Leak Detector Dye. ...
  7. Apply the Dye. ...
  8. Observe Closely.
Jul 25, 2022

What happens if my heater is leaking water? ›

A water leak from your furnace could lead to high repair costs; and even worse, if it does produce bio growth, this could damage your property and pose a severe risk to your health. If it continues to leak, your furnace will eventually fail and need to be replaced.

Why is my heater valve leaking? ›

Your water heater's relief valve can start leaking for one of two reasons: either the valve was triggered to open because of excessive temperature or pressure, or the valve itself is faulty. In the first case, the valve will drain water out of the discharge pipe as explained above.

How do you fix a leaking water heater drain? ›

Fixing a Leaking Drain Valve

Replacing the entire hot water tank drain valve is usually the most reliable fix for a leak. However, you can try and tighten the valve slightly with a wrench to see if the leak stops.

Why is my heater core leaking water? ›

The coolant/antifreeze contains corrosion inhibitors that coat the surfaces inside the cooling system, including the heater core. When the corrosion inhibitors are depleted, the cooling system can become corroded, filled with contaminants and may even start to leak.

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