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Yes, you can add a pool heater to an existing pool. Many homeowners install a pool heater during pool remodels to enhance their overall pool experience. Heaters offer various advantages, such as consistent and precise temperature, property value boosts, and more opportunities to enjoy swimming regardless of weather conditions.

No, a pool heater doesn’t need to run all the time—instead, most homeowners use the heater to raise and maintain the temperature as needed during use. Pool heaters require between 24 and 72 hours to fully heat a pool, so you should prepare and run it well ahead of time. If you plan to use it frequently, use a pool cover to retain heat and reduce energy consumption.

Pool heaters can freeze if left exposed to extreme conditions. Freezing can damage internal heater components, potentially leading to costly repairs. Cycling water, covering the heater, and regular maintenance servicing help prevent freezing. Sealing or winterizing your heater also protects it during the season—this involves draining water from the heater and its components.

Pool heater lifespans vary depending on the type of heater and maintenance, but they can last between seven and 30 years. Gas and propane furnaces have the shortest lifespans, about seven to 12 years, while electric and solar pool heaters can last up to 30 years.