What drives the price
Pool heaters live outdoors in humidity next to chlorinated water, so boards, sensors and heat exchangers corrode on a schedule. Diagnosis is half the labour; parts range from a $40 sensor to a four-figure heat exchanger, which is the part that decides repair versus replace.
- Gas heater vs heat pump - different failure modes and parts
- Which part failed - igniter and sensors cheap, exchanger and compressor dear
- Age, since parts for 12+ year units get scarce
- Water chemistry damage, which can void what warranty remains
- Whether the bypass and plumbing need correcting to protect the new part
Should you DIY this or call a professional?
Call a pro - these combine gas or high-amperage electrical with pressurized water, and a mis-set gas heater is a carbon monoxide source. What you can check first: the filter and pump basket (heaters shut down on low flow), the breaker, and the thermostat setting. A surprising share of no-heat calls are a dirty filter starving the flow switch.
Signs you need this repair
- Heater cycles on and off without reaching temperature
- No ignition, or a heat pump that runs without heating
- Error codes on the panel
- Visible corrosion or soot around a gas unit
- Tripping the breaker when it starts
How to not get overcharged
Ask what the failed part costs before agreeing to labour, and if the heat exchanger has gone on a unit past ten years, get the replacement quote in the same visit - exchanger jobs routinely run half the price of a new heater that comes with a fresh warranty. If replacing, ask for the heat pump running-cost comparison honestly worked against your gas price; in Florida's climate a heat pump usually wins on cost per season.
Get competing quotes freeOur agents contact local pros, collect quotes, and negotiate on your behalf. You pay nothing to source.
Red flags to watch for
- Condemning the unit without naming the failed component
- Quoting replacement while the filter is visibly filthy
- Chemistry-damage warranty exclusions invoked without a water test
- No permit mentioned on a gas line change
Frequently asked questions
How much does it cost to repair a pool heater?+
Pool heater repairs typically run $200-$700, averaging near $400. Replacement runs $2,500-$6,000 installed, with heat pumps at the top and gas heaters mid-range.
Can I repair a pool heater myself, or should I hire a professional?+
Call a pro - these combine gas or high-amperage electrical with pressurized water, and a mis-set gas heater is a carbon monoxide source. What you can check first: the filter and pump basket (heaters shut down on low flow), the breaker, and the thermostat setting. A surprising share of no-heat calls are a dirty filter starving the flow switch.
How long does it take to repair a pool heater?+
1-3 Hours for Most Repairs. Scheduling and parts availability can extend the overall timeline beyond the hands-on work itself.
What makes the price of this job go up or down?+
Gas heater vs heat pump - different failure modes and parts. Which part failed - igniter and sensors cheap, exchanger and compressor dear. Age, since parts for 12+ year units get scarce. Water chemistry damage, which can void what warranty remains. Whether the bypass and plumbing need correcting to protect the new part.
How do I avoid being overcharged?+
Ask what the failed part costs before agreeing to labour, and if the heat exchanger has gone on a unit past ten years, get the replacement quote in the same visit - exchanger jobs routinely run half the price of a new heater that comes with a fresh warranty. If replacing, ask for the heat pump running-cost comparison honestly worked against your gas price; in Florida's climate a heat pump usually wins on cost per season.