Pool Heater FAQs

Pool Heater FAQs

Thinking about adding a pool heater? Here are the most common questions people ask, answered simply and clearly. If you're trying to decide which pool heater is right for you, this FAQ will help.

What types of pool heaters are available?

The most common types are:

  • Gas heaters: Heat water quickly using natural gas or propane, ideal for pools that aren’t used daily.
  • Electric heat pumps: Use ambient air to heat water. They're energy-efficient and great for consistent use in moderate climates.
  • Solar heaters: Use rooftop or ground-mounted solar panels. They’re energy-saving but depend on sunlight and regional climate.

Which pool heater is best for colder climates?

Gas heaters are generally the best option for colder climates since they don’t rely on ambient air temperature or sunshine. They provide fast and reliable heating regardless of weather.

How long does it take to heat a pool?

It depends on the type of heater, your pool size, and starting water temperature. Gas heaters can raise temperatures by 1 to 2 degrees per hour. Heat pumps may take longer but are more energy-efficient over time.

Are heat pumps more efficient than gas heaters?

Yes, in warmer climates. Heat pumps use less energy and are more cost-effective over time. However, they work best when air temperatures are above 50°F.

Can I use a pool heater year-round?

In warm or moderate climates, yes. In colder areas, gas heaters and properly winterized equipment allow for year-round heating. Just ensure the heater you choose is rated for your seasonal use.

How do I size a pool heater for my pool?

You’ll need to know your pool’s surface area and desired temperature increase. Heaters are measured in BTUs. As a rough guide, a 400,000 BTU gas heater is ideal for larger pools (over 20,000 gallons), while 100,000–200,000 BTUs work for smaller ones.

Do I need a pool cover if I have a heater?

Yes, using a pool cover greatly improves heating efficiency. It helps retain heat overnight and reduces evaporation, meaning your heater doesn’t have to work as hard or run as long.

How much does it cost to run a pool heater?

Costs vary depending on heater type, climate, and usage. Gas heaters can be more expensive per hour of use, while heat pumps and solar systems have lower ongoing costs. Using a cover helps minimize operational expenses.

👉 View AquaDoc's selection of pool heaters

Need help choosing the right heater for your pool? Contact our team or explore our expert-curated options for every climate and budget.

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