Pool Heater and Heat Pump Repair in Cape Coral, Lee County

Pool heaters come in two kinds: heat pumps, which run on electricity, and gas heaters, which burn natural gas or LP. Both are covered by the Florida Building Code, Energy Conservation (8th edition): gas and oil-fired pool heaters made on or after April 16, 2013 must have “a minimum thermal efficiency of 82 percent” and must not have continuously burning pilot lights, and “heat pump pool heaters shall have a minimum COP of 4.0”.

Searches for pool heater repair in Lee County run at about 480 a month from November to March and fall to 70 to 110 a month from June to September (Google Keyword Planner, October 2025 to September 2026). That is search interest, not a count of breakdowns.

How to tell what is wrong with a pool heater

• The heat pump runs but the water stays cold. AquaCal’s manual says a fully open bypass around the heat pump “will cause insufficient water flow”. If the pump is not moving water, the heater has nothing to heat; see pool pump repair.
• The heat pump shows LP. Hayward’s troubleshooting guide says: “LP is an indication the low pressure switch is open.”
• There is ice on the coil. Pentair’s Gulfstream heat pumps “enter the defrost cycle at ambient air temperatures below 48˚F”, so some frost on a cold morning is expected. AquaCal says: “If heavy ice (not frost) starts to build up, shut off the heat pump.”
• There is water under the unit. “Your heat pump may not be leaking; it may just be condensation draining from the unit,” AquaCal says. Condensation stops when the heat pump is off; water that contains chlorine, salt or stabilizer points to a leak.

Repair or replace a pool heater

Can a pool heater be repaired? The makers’ manuals treat the faults above as things to diagnose and fix, and AquaCal’s own advice for a leaking unit is to have it troubleshot and repaired. Whether a failed heater is worth repairing depends on what failed, and no price is published here, so ask for the repair and the replacement priced separately in the written quote. A replacement has rules to meet. The energy code figures are above, and the federal standard for gas pool heaters is a thermal efficiency of at least 82% for heaters made before May 30, 2028; heaters made on or after that date, gas and electric, move to a new “integrated thermal efficiency” standard (10 CFR 430.32). The energy code also requires time switches “for heaters and pump motors”.

If the pool has just been resurfaced, wait before heating it: Pebble Technology International says to “wait at least 14 days before heating the water” after a new finish. See pool startup after plaster for the other start-up waits.

Heater permits in Cape Coral

The City of Cape Coral has a residential permit guideline for replacing an electric pool heater and another for replacing a gas or LP heater. The electric guideline lists a pool contractor (CPC), an HVAC contractor (CAC), a mechanical contractor (CMC) or an owner-builder as able to apply; the gas guideline lists a pool contractor, a plumbing contractor (CFC), a mechanical contractor or an owner-builder. Both are marked as over the counter, and the gas guideline asks for a site plan and LP plan details. Look the contractor up at myfloridalicense.com before work starts.

Covers and heat loss

The energy code (R403.10.3) requires outdoor heated pools to have a vapor-retardant cover, a liquid cover or another means proven to reduce heat loss, unless more than 70 percent of the heating energy over a season comes from site-recovered energy, such as a heat pump or solar. A Florida water management district makes the same point about water: “Cover your spa or pool to reduce evaporation.”