Pool Heating in Arizona: Heat Pump vs. Gas Heater vs. Solar
Compare heat pumps, gas heaters, and solar for Arizona pools — real operating costs, how each performs in winter, and which one fits your swim season.
Arizona summers heat a pool for free. The other seven months are the problem. From late October through March, an unheated Phoenix-area pool typically sits between 55°F and 68°F — swimmable for nobody. The right heating system turns a four-month pool into a nine- or twelve-month one, and choosing between a heat pump, a gas heater, and solar is one of the highest-impact equipment decisions you will make. Key takeaways Heat pumps cost the least to run and are the best fit for extending the swim season across spring and fall. Gas heaters heat fastest and are the right choice for a spa or for on-demand use a few weekends a year. Solar has the lowest operating cost but cannot hold temperature through a cold January week without a backup. Most Arizona homeowners are best served by a heat pump for the pool and a gas heater for the spa. A cover matters more than the heater size. Evaporation,…
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