How Long Should a Pool Heater Last Before You Need to Replace It?

Keeping your pool at a comfortable temperature is the best way to enjoy a quick dip or a leisurely swim. That’s why a pool heater is an essential part of your pool’s operating system, but how long should a pool heater last? This guide covers the factors playing a role in how long a pool heater functions and offers tips on how to prolong a pool heater’s lifespan. 

How Long Does a Pool Heater Last?

A pool heater's lifespan can range between five and 30 years. The actual lifespan depends on several factors, including the type of pool heater, the local climate, usage, and ongoing maintenance.

Factors That Influence a Pool Heater’s Lifespan

There are different types of pool heaters to choose from, each with an estimated lifespan. However, the number of years a pool heater lasts is also affected by the amount of maintenance you perform and the climate in which you live.

Type of Pool Heater

There are three types of pool heaters: solar, electric, gas, and heat pump. Solar pool heaters have the longest lifespan, followed by electric and then gas models. 

• Solar pool heaters: 20–30 years

• Electric pool heaters: 10–25 years

• Gas pool heaters: 5–10 years

• Heat pump pool heaters: 10+ years

Maintenance

Proper pool heater maintenance helps prolong its lifetime and should be done at least once per year. The cost to install a pool heater averages $3,000 for the unit and installation, so proper maintenance is essential to getting your money’s worth.  

But you have to worry about more than pool heater maintenance. You also need to ensure the pool itself is maintained properly so it won’t put undue pressure on the systems and equipment. This includes maintaining the correct chemical balance, skimming debris from the surface, changing filters on a regular basis, and looking for any signs of damage to the components. 

While you can do some of this maintenance on your own, you can hire a pool heater service near you to ensure everything is done correctly and on time.

Climate

The climate you live in will affect how hard the pool heater has to work which, in turn, will affect how long it lasts. In colder climates or climates with large swings between nighttime and daytime temperatures, the pool heater will have to work harder to maintain a consistent temperature. Wind and humidity can also affect the water temperature and make the heater work harder. 

Warranties for Pool Heaters

Pool heaters come with a warranty, but to take advantage of it, you’ll likely have to fill out the warranty form within a certain amount of time after purchasing the unit. Pool heater warranties differ depending on the manufacturer, but they range from one to five years. Read the warranty information carefully so you know what it covers and how to make sure it’s valid if you need to use it.

Repairing vs. Replacing Your Pool Heater

Unfortunately, there are situations in which pool heaters need to be replaced if they’re not functioning properly. Other times, you can do some pool heater troubleshooting to fix the issue. Signs it may be time to replace or repair your pool heater include:

• Strange noises

• Signs of rodents (chewed wires, debris, or nests)

• Higher utility bills due to inefficient heating 

• Rust or corrosion

• Fluid leaks

• Not heating properly

If you’re having issues with your pool heater but it’s still under warranty or fairly new, you can consider repairing it. If the warranty period is over or the pool heater is nearing the end of its lifespan, it’s a better idea to consider replacing it. You’ll also need to weigh the costs of replacing the pool heater or repairing it.