Pool Heater and Heat Pump Repair in St. Petersburg, FL
BrightWater Pool Co repairs and services gas and electric pool heaters, including heat pumps, for homes across St. Petersburg, Gulfport, Clearwater, and Pinellas County. Most heater problems are repairs, not replacements: low water flow, failed sensors, ignitors, and control boards are all fixable.
A heater problem usually shows up the first cool week of fall, right when you need the heat. The average pool heater repair costs about $479, and most fall between $166 and $802, according to Swimply's 2026 pool heater cost guide. Knowing what the symptom points to tells you whether you are looking at a quick fix or a bigger decision.
What your pool heater is telling you
Most heater problems show up as one of a handful of symptoms. The table below matches each one to its most common cause, so you can tell a quick fix from a bigger repair before anyone opens the unit.
| Symptom | Most likely cause | What usually fixes it |
|---|---|---|
| Won't turn on, or shows a flow or pressure error | Not enough water moving through the heater: a full pump basket, a dirty filter, a closed valve, or a failed pressure switch | Clearing the restriction, or replacing the switch if flow checks out |
| Runs, but the water never warms up | A coil clogged with debris, low refrigerant, or a pool pump that shuts off before the heater can finish | Coil cleaning, a refrigerant leak repair, or a longer pump schedule |
| Water pooling under a heat pump | Usually normal condensation, occasionally a leaking heat exchanger | A simple chlorine test tells you which (see the next section) |
| Gas heater clicks but won't light | A worn ignitor, thermocouple, or gas valve | Replacing the failed part |
| Error code on the display | Varies by brand, but most codes point to water flow, pressure, or a sensor | Diagnosis against the manufacturer's code list |
Failed ignitors, sensors, control boards, and pressure switches are all repairable parts. That is why BrightWater diagnoses the unit before recommending a repair or a replacement.
Is my heat pump leaking, or is it condensation?
Water under a running heat pump is usually not a leak. A heat pump pulls heat out of humid air, and that moisture has to go somewhere. In high humidity, a pool heat pump can produce 6 to 8 gallons of condensation an hour, according to heat pump manufacturer AquaCal. On a muggy St. Pete afternoon, that puts a lot of water on the equipment pad.
Two quick tests tell you which one you have:
- Test the water for chlorine. Dip a regular test strip in the water under the unit. Condensation has no chlorine or salt in it, so a positive reading means pool water is escaping and the heater likely has a leak.
- Turn the heater off and leave the pump running. Give it a couple of hours. If the puddle shrinks or dries up, it was condensation. If it keeps growing with the heat pump off, have the unit checked for a leak.
The chlorine test does not work on pools sanitized with an ionizer or ozone system, per AquaCal, so use the second test in that case.
Pool heater not heating? Check these first
A few checks rule out the simple causes before you book a repair. Turn off power to the equipment before you open or touch anything at the pad.
- Confirm the pool pump is running. A heat pump only heats while water flows through it, so a pump timer that shuts off early limits how warm the pool can ever get.
- Empty the skimmer and pump baskets and check the filter. Restricted flow is one of the most common reasons a heater shuts itself off or throws an error.
- Check the valves at the equipment pad. They need to be set so water actually passes through the heater.
- Look at the coil and the space around the heat pump. Leaves, grass clippings, and overgrown plants block the airflow it needs to pull heat from the air.
- Check the set temperature and the display. Note any error code before calling, since it speeds up the diagnosis.
If all five check out and the water still won't warm, the problem is inside the unit, such as refrigerant, the compressor, or a control board, and it needs a technician.
Should you repair or replace a pool heater?
Repair usually wins on a younger heater. A common rule of thumb: if the heater is under five years old and the repair costs less than half the price of a new unit, fix it, per Swimply's 2026 pool heater cost guide. On an older heater, frequent repairs and higher energy use tip the math toward replacement.
| Repair | Typical cost | Usually worth fixing? |
|---|---|---|
| Diagnostic visit | $125 to $195 | Always the first step |
| Ignitor or thermocouple (gas) | $175 to $350 | Yes, on almost any working heater |
| Gas valve | $300 to $600 | Yes, unless the heater is near the end of its life |
| Heat pump compressor or refrigerant | $500 to $1,200+ | Depends on the unit's age |
| Heat exchanger | $2,800 to $4,500 | Often not; replacement may make more sense |
Cost ranges are 2026 national figures from Swimply. Lifespan matters too: gas heaters typically last 5 to 10 years and heat pumps 10 to 15 years or more, according to U.S. Department of Energy figures cited in 2026. If you are replacing, our pool heater guide for St. Petersburg compares heat pumps, gas, and solar on cost and swim season.
Pool heater maintenance before the cool season
The best time to service a heater is before you need it. St. Petersburg pool water usually drops below a comfortable swimming range for about four to six months, from late fall through early spring, and a heater that sat idle all summer is the one most likely to act up on the first cool night. A pre-season check should cover:
- Clearing plants, leaves, and stored items away from the heat pump so air moves freely across the coil.
- Rinsing debris out of the coil fins with a gentle spray of water.
- Cleaning the filter and baskets so the heater gets full water flow.
- Running the heater and confirming it reaches the set temperature.
Professional annual heater maintenance typically runs $150 to $300, per Swimply's 2026 figures. On BrightWater weekly plans, heater inspection is already part of every visit along with the pump and filter, since a heater problem is often really a circulation problem.
Heater not keeping up? BrightWater installs, repairs, and services gas and electric pool heaters across St. Petersburg and Pinellas County. Request a quote and we'll reach out within one business day.
Get Your Free QuoteWhere we repair pool heaters
We repair and service pool heaters across St. Petersburg, St. Pete Beach, Gulfport, Pass-a-Grille, Pasadena, Snell Isle, Shore Acres, and Clearwater. Our service zone covers 40 ZIP codes across St. Petersburg, Clearwater, and mid-Pinellas. Pump trouble too? See pool pump and equipment repair.
Frequently asked questions
How much does pool heater repair cost?
Most pool heater repairs cost between $166 and $802, with an average around $479, based on 2026 national figures from Swimply. Simple fixes like a gas ignitor run $175 to $350, while heat pump compressor or refrigerant work runs $500 to $1,200 or more. A failed heat exchanger at $2,800 to $4,500 usually makes replacement the better call.
Why is water leaking from my pool heat pump?
It is usually condensation, not a leak. In high humidity a pool heat pump can produce 6 to 8 gallons of condensation an hour, according to AquaCal. Test the water for chlorine: condensation has none. Or turn the heat pump off with the pool pump running. If the puddle keeps growing, the heater may be leaking.
Why is my pool heat pump running but not heating?
The most common causes are restricted water flow, a coil clogged with debris, low refrigerant, or a pool pump that shuts off before the heater can finish. A heat pump only heats while water is circulating through it. If flow and airflow both check out, the problem is inside the unit and needs a technician.
Should I repair or replace my pool heater?
Repair it if the heater is under five years old and the repair costs less than half the price of a new unit, a rule of thumb from Swimply's 2026 guide. Replacement usually makes more sense when the heater is past its expected lifespan, the heat exchanger has failed, or repairs keep stacking up.
Do you repair pool heat pumps in Clearwater?
Yes. BrightWater's service zone covers 40 ZIP codes across St. Petersburg, Clearwater, and mid-Pinellas, and we install, repair, and service both gas and electric pool heaters throughout it, including heat pumps.
Sources
- Swimply, "Pool Heater Costs: The 2026 Guide," 2026.
- AquaCal, heat pump installation guidance on condensation and leak testing, aquacal.com, accessed September 2026.
- Leslie's, "Pool Heat Pump Troubleshooting Guide," lesliespool.com, accessed September 2026.
- PoolDial, "Hayward HeatPro Not Heating Pool," troubleshooting guide, accessed September 2026.
- Varmin Pool, "Are Pool Heat Pumps Worth It? An Honest 2026 Buyer's Guide," June 2026, citing U.S. Department of Energy.