Hayward Pool Heater: Running but Not Heating

Hayward pool heater running but not heating may be due to low gas pressure or clogged filters. Check gas pressure and clean filters to resolve the issue.

Swimming in a heated pool is a luxury in itself, but a pool heater that’s not working can be a frustrating experience. Many pool owners often encounter issues with their pool heaters, and one of the most common ones is when the hayward pool heater is running but not heating up the water. This issue can arise due to various reasons, such as low gas pressure, faulty thermostat, or clogged filters. If you’re facing a similar issue with your hayward pool heater and trying to figure out what may have gone wrong, keep reading. This article will guide you through the reasons and possible solutions that can help you resolve the heating problem of your pool.

Hayward Pool Heater: Running but Not Heating

Credit: www.lowes.com

Possible Reasons For Hayward Pool Heater Running But Not Heating

There can be a few reasons why your hayward pool heater is running but not heating. One possible cause is a clogged filter. Low water flow can also impact the heater’s ability to heat the pool. Check the thermostat settings on your heater to ensure they are correct.

You should also inspect the heater’s ignition system for any issues. A faulty control panel can also prevent the heater from functioning correctly. Take the step-by-step approach to identify what might be causing the problem. Cleaning or replacing a clogged filter and adjusting the thermostat settings should help solve the problem.

If all else fails, it may be time to call a professional for repairs.

Heat Pump Running, but Not Heating

Frequently Asked Questions Of Hayward Pool Heater Running But Not Heating

What Are Some Common Reasons Why My Hayward Pool Heater Is Running But Not Heating The Water?

Some common reasons why a hayward pool heater is running but not heating the water include a clogged filter, insufficient water flow rate, low gas pressure, faulty temperature sensor, or a malfunctioning thermostat.

How Can I Check If My Hayward Pool Heater Has A Faulty Thermostat Or Pressure Switch That Could Be Causing It To Not Heat The Water?

To check if your hayward pool heater has a faulty thermostat or pressure switch that could be causing it to not heat the water, you should hire a professional technician who is trained and experienced with troubleshooting pool heaters. The technician will perform a diagnostic test and identify the exact issue with the heater.

It is not recommended to attempt any repairs or adjustments on your own as it could lead to further damage or safety hazards.

Are There Any Simple Diy Fixes I Can Try To Get My Hayward Pool Heater Heating Properly Again?

Yes, there are a few simple diy fixes that you can try to get your hayward pool heater heating properly again. These include checking and cleaning the filter, ensuring proper water flow and pressure, checking and adjusting the thermostat, and inspecting the burner assembly for any blockages or damage.

However, if these diy fixes do not solve the problem, it is recommended to seek professional assistance.

What Should I Do If My Hayward Pool Heater Is Still Not Heating Even After Attempting All Troubleshooting Steps?

If your hayward pool heater is still not heating even after attempting all troubleshooting steps, it is recommended to contact a certified hayward technician for professional assistance. There could be more complex issues that require expert knowledge and tools to resolve.

Is It Important To Have Annual Maintenance Check-Ups For My Hayward Pool Heater To Prevent It From Not Heating The Water Properly In The Future?

Yes, it is important to have annual maintenance check-ups for your hayward pool heater to prevent it from not heating the water properly in the future. Regular maintenance ensures that your heater is operating at peak efficiency and can help identify any potential issues before they become major problems.

It also helps to extend the lifespan of the heater and ensures that it is safe to use. Neglecting regular maintenance can result in inefficient heating, higher energy bills, and even pose a safety risk.


Troubleshooting a hayward pool heater that’s running but not heating can seem daunting, but following some simple steps can solve the issue. From checking the thermostat settings to verifying the gas supply, inspecting the heater’s internal components, and contacting a professional if needed, homeowners can enjoy a warm and comfortable swimming experience again.

Additionally, regular maintenance like cleaning the filter and inspecting the unit for any damage can help prevent future problems and prolong the lifespan of the heater. Trusting the expertise of a qualified technician and using genuine hayward replacement parts can also ensure optimal performance and efficiency.

With a little patience and diligence, pool owners can keep their hayward heaters running smoothly and enjoy a relaxing and refreshing swim whenever they want.

Home Advisor Blog

Home Advisor Blog is a reader-supported blog. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

Sitemap: https://homeadvisorblog.com/sitemap_index.xml