5 Pool Heater Questions to Ask a Pro

Keep your cool during this pool project with some careful planning

 A professional repairing a pool heater
Photo: Tomasz Zajda / Adobe Stock
 A professional repairing a pool heater
Photo: Tomasz Zajda / Adobe Stock
Get quotes from up to 3 pros!
Enter a zip below and get matched to top-rated pros near you.
Geo Icon

Let’s be honest. Most people don’t want to feel like they’re taking a cold plunge when they jump into their pool. Sure, there’s a time and a place, such as your local spa or a New Year's Day polar plunge. Pool heaters will make the water more comfortable, but there are a lot of different options. To narrow it down and keep your installation on track, discuss these five pool heater questions with your contractor.

1. Is my pool a good candidate for heating?

People in colder climates can use a heater to extend the length of their swim season, but in a milder climate, it’s not as much of a necessity. This is especially true if you don’t use your pool that often. Talk to your contractor to understand if heating your pool is worth the cost. 

2. What type of pool heater should I use?

Before you can start your installation, you’ll need to discuss the options with your installer. There are four types of pool heaters—gas, solar, electric resistance, or heat pumps. Some perform better in certain climates. They all come at different price points. Overall, gas is one of the most popular because it heats your pool the fastest, but it’s not always the best option when you factor in lifespan, installation, running costs, and emissions.

3. When can I expect my pool heater to be installed?

Discuss timelines with your contractor so you can set your expectations. It can take anywhere from a day to a few days to install a pool heater depending on the complexity of the job. They’ll also need to fit you into their schedule, which may be tighter in the summer when pool projects are plentiful. 

4. What size heater do I need and how much will it cost to run?

Get ready to discuss the volume of your pool with your contractor. This helps them choose the right size heater. Pool heaters range anywhere from 30,000 BTU to 400,000 BTU, but it also depends on the energy source. You’ll need a minimum of 50,000 BTUs for the average 5,000 to 10,000 gallon pool.

Since energy is a running cost, it’s also a good idea to inquire about monthly energy bills. Certain pool heaters use more energy than others, which will rack up long-term costs.

5. How do I maintain my pool heater?

Proper maintenance will keep your heater working for swim seasons to come, so make sure you discuss it with your local pool heater pro. This will include things like how to clean the heater and the best temperature settings. Ideally, a swimming pool should be somewhere between 78 and 82 degrees Fahrenheit.

Need professional help with your project?
Get quotes from top-rated pros.
The homeowners guide to pool constructions and installations
From average costs to expert advice, get all the answers you need to get your job done.
Country cottage with green landscaped backyard
May 29, 2025
May 29, 2025
If you're ready to get rid of that pool once and for all, use this guide to learn aboveground pool removal cost based on factors like size, type, and features.
Home swimming pool in backyard with view of mountains in distance
Mar 14, 2025
Mar 14, 2025
From small leaks to broken pool pumps, how much do pool repairs cost? We'll break down what to expect from your pool repair bill no matter the size of the fix.
Family sitting poolside watching the children play
Mar 3, 2025
Mar 3, 2025
When you're long overdue for a pool upgrade, how much does a pool remodel cost? From a new finish to a whole new design, we'll break down your options here.
Young girl playing with red ball with her father in pool
Apr 17, 2025
Apr 17, 2025
It’s always best to hire a pool electrician to work on your pool's electrical systems. Our guide breaks down everything you need to know about hiring this pro for your pool.
Toddler and grandma playing in the pool
Feb 24, 2025
Feb 24, 2025
Two-speed and variable-speed pool pumps perform the same function, but how they do it can create a splash or squash the fun at your next pool party.
Mother and child playing in a swimming pool
Feb 25, 2025
Feb 25, 2025
Deciding between sand versus cartridge pool filters? Plunge into the specifics of each type of pool filter, pros, cons, and comparisons in this handy guide.