A well-maintained pool heater can extend the life of your heating unit and your enjoyment of the pool. Regular pool heater maintenance helps your pool run smoothly and with more efficiency, saving you time and money.

Now, before you run outside to start maintaining your pool heater it’s important to note that only trained pool professionals should work on your pool heater. If you’re having heater problems, please contact your pool professional right away and DO NOT try to fix it yourself!

Here are two easy ways you can help maintain your pool heater:

1. WATER CHEMISTRY

The pH level of your pool is very important. The Center for Disease Control (CDC) recommends a pH level of 7.2 to 7.8. Not only can the water’s chemistry affect your health, but incorrect water chemistry can damage your pool’s equipment. If your pool water is too acidic, it can corrode a gas heat exchanger and prevent the unit from working properly.

Heaters like the ETi® 400 High Efficiency Heater or the UltraTemp ETi® Hybrid Heater have titanium heat exchangers, which are less corrosive and susceptible to damage from water chemistry. However, it’s still important to monitor your pool’s water chemistry.

2. FILTER MAINTENANCE

Did you know your filter needs to have regular maintenance to ensure your pool heater works efficiently? That’s right! If there is a buildup of debris in your filter, water may not be able to flow freely through the system. Irregular water-flow can prevent gas heaters from igniting or heat pumps from turning on. In most cases, the pressure sensors that control the heating cycles only work if the filter is clean and the water flow is steady.

So help maintain your pool heater by checking your water chemistry and filter regularly!

source: https://www.pentair.com/en/knowledge-base/pool-spa-equipment/pool-side-stories/2-easy-pool-heater-maintenance-tips.html