Does a pool heater need a GFCI outlet? Yes, always 75% In some cases 25% Get Free Quotes Today! Question: Does a pool heater need a GFCI outlet? Top Answer (75% of 4 votes): Yes, always. Answer: In some cases Explanation: Not all heaters require a hard wire connection. Precision Pools and Construction WV Answer: Yes, always Explanation: There should be a GFCI in all controllers, so technically yes. NorCal Pool Builders Get Free Quotes Today! Find Local Pros Free Pool Heater Installation Cost Estimates Related Questions How Much Does Pool Heater Installation Cost? How Much Does a Gas Pool Heater Cost? How Long Does a Pool Heat Pump Typically Last?Top answer: Five to ten years How Long Does a Gas Pool Heater Typically Last?Top answer: 5-10 years Can you add a heater to an existing pool?Top answer: In most cases