How Does a Pool Heater Work?

A pool water heater is essential for maintaining the temperature of your pool water, especially in colder climates or during the winter months in Canada. Without a pool water heater, the water can become too cold for comfortable swimming, which can discourage you from using your pool altogether.

A heater can also extend your swimming season, allowing you to enjoy your pool for a longer period of time. In addition, a pool water heater can be beneficial for therapeutic purposes, as warmer water can help to relax muscles and improve circulation. Overall, a pool water heater is a valuable investment for any pool owner who wants to ensure comfortable and enjoyable swimming experiences.

As a pool owner, you need to know there are several types water heaters available.

We will outline the different types of pool heaters, how they work, the installation process, and how to select the right one for your pool.

Electric Pool Water Heaters

An electrical heater can warm up your pool water by taking in outside air and heating it up using electricity and then returning that warm water back into your pool. The heater has a special liquid inside called freon, which gets very hot when it’s compressed by a compressor inside the heater. The hot freon turns into gas and goes through some coils that cool it down. This cooling process makes the water in the heater get warmer. Then, the freon turns back into a liquid, and the whole process starts over again. To work well, the air outside should be at least 50 degrees F or 10 degrees celsius.


Gas Water Heaters

Gas heaters use either natural gas or propane to heat up your pool water. They work by burning the gas inside a special chamber that has copper coils. The coils get really hot and heat up the water that’s running through them. Then, the warm water gets sent back into the pool using a special pipe. Both propane and natural gas work well for heating pools, but if you care about the environment, propane might be a better choice. Gas heaters can work no matter how warm or cold the air is outside, and they heat up the water quickly, faster than electric heaters.

Solar Panel Heaters

If you want to be more eco-friendly, you can choose to use solar heaters for your pool. There are different ways to do this, but one option is to use solar panels. These panels are connected to your pool’s pipes and pump. The pump sends water through the solar panels, where the sun’s heat warms it up. Then, the warm water goes back into the pool. It’s a simple and efficient way to use the power of the sun to heat up your pool water.

Quick Summary

Pool heaters keep your water warm by taking in cold water and sending warm water back into the pool. However, not all heaters work in the same way.

There are three types of pool heaters:

  • electric water heaters
  • gas water heaters
  • solar heaters

Each type has its own unique way of working, installation process, and maintenance requirements.

Installation Process

The installation process will vary depending on the type of heater you choose. If you’re not sure how to do it yourself, it’s a good idea to hire a professional to help you.

Before you choose a pool heater, there are some things to consider, like your budget, the location of your pool, and how big it is. These factors can affect which type of heater will work best for you.


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