Best electric pool heaters

Top pick: FibroPool FH255 (55,000 BTU) — the safest bet for most in-ground pools. It's a titanium heat-exchanger heat pump rated 4.8/5 across 49 ratings, sold at several stores, and 55,000 BTU suits a typical mid-size pool without a huge electrical upgrade.

Who the others suit:

• Pentair GulfStream HE 110-R — bigger pools and buyers who want a name-brand, heat-only unit with a titanium exchanger and high COP.
• Pentair GulfStream 142K BTU — large pools or spa-heavy setups that need serious output.
• Hayward HeatPro — those who want a mainstream brand and the most capacity here, with the electrical demand that comes with it.
• Vevor 104,790 BTU with Wi-Fi — app control and cooling as well as heating, for larger pools.
• Vevor 35,830 / 51,200 BTU — budget-friendly mid-size options.
• Varpoolfaye 58,000 BTU inverter — quiet, variable-speed heating and cooling for above- or in-ground pools.
• Varpoolfaye S10 40,000 BTU — smaller pools up to about 12,000 gallons.
• Vevor 22,250 BTU units — small pools and above-ground setups.

Check your pool's gallonage and your panel's available amperage before choosing; heat pumps need a dedicated breaker and steady airflow around the unit.