Heat Pump Repair in Carrollwood, FL

The Census Bureau's 2024 gazetteer gives the Carrollwood census designated place about 9.2 square miles of land and about 1 square mile of water. The Bureau says census designated places represent unincorporated communities and do not have an active, functioning governmental structure.

The housing mix

The University of Florida GeoPlan Center publishes a data report for the Carrollwood CDP built from American Community Survey estimates for 2019 to 2023. It counts:

• 14,977 housing units in all.
• 10,985 single-family units.
• 3,835 multi-family units.
• 156 mobile home units.

The same report counts 12,756 housing units in Carrollwood in the 1990 census, against 14,977 in the 2019 to 2023 estimates. For a heat pump call, that means a technician should not assume what is installed from the address. The equipment, the ductwork and where the indoor unit sits all need to be looked at in the home itself.

For the wider neighborhood picture, see our Carrollwood HVAC page.

ENERGY STAR says an air-source heat pump uses the difference between outdoor and indoor air temperatures to cool and heat a home. It moves heat rather than making it from fuel.

The part that lets one machine do both jobs is the reversing valve, a valve that changes which way the refrigerant (the fluid that carries heat) flows. Trane says that when the thermostat calls for heat, the reversing valve reverses the flow of refrigerant.

Why the symptom matters

Trane lists four signs of reversing valve trouble: not heating, not cooling, a unit stuck in one mode, and strange noises. It also says other problems can cause the same symptoms, and that the right step is to call an HVAC professional. Trane warns homeowners not to troubleshoot the valve themselves, because that can damage it and cause a refrigerant leak.

So when you call, say which mode is failing: heating, cooling or both. That tells a technician where to start. If you are not sure what you have, our guide on how to tell if you have a heat pump can help.

These figures come from Tampa International Airport, not from a station in Carrollwood itself. They describe the regional climate, not Blume service data.

• Freezing nights are rare. NOAA's 1991 to 2020 normals for Tampa International average fewer than one night a year at or below 32°F.
• Winter nights are mild. The same normals put the average winter low, December through February, at 54.7°F.
• A typical January. The National Weather Service Tampa Bay office lists a normal January high of 71.3°F and a normal low of 52.8°F.
• Cold snaps do happen. The Weather Service record for January 21 is a low of 21°F, set in 1985.

ENERGY STAR suggests having a contractor check the heating system in the fall, because contractors get busy once winter comes. If you switch to heat on the first cool morning and nothing warm comes out, turn it off and call rather than running it for hours.

On a cool, damp morning a heat pump in heating mode can collect frost on its outdoor coil. Lennox says the coil surface can get so cold that moisture in the air freezes onto it. It adds that coil surface temperatures can be much lower than the surrounding air.

What normal defrost looks like

The defrost cycle is how the heat pump clears that frost. Lennox says the heat pump temporarily switches from heating to cooling mode. While it does, you may hear a whooshing sound or see steam rising from the outdoor unit. Lennox says the whole process usually lasts between 5 and 15 minutes, depending on weather and frost levels.

When to call

Lennox says repeated long defrost cycles should be checked by an HVAC professional. Call a licensed contractor if the outdoor coil stays caked in ice, or if the unit seems to defrost again and again without heating the house. Do not chip at the ice or pour water on the coil. Our guide to heat pump defrost mode explains more.

Carrier says auxiliary heat is often labeled AUX on thermostats.

• AUX (auxiliary heat). Carrier calls auxiliary heat a secondary heating source built into a heat pump system. It says auxiliary heat typically uses electric resistance heating strips. Carrier also says supplemental heat can help keep the house comfortable during a defrost cycle.
• Emergency heat. Carrier says emergency heat is manual: you must switch the thermostat to that setting yourself. It says to use it only if the heat pump has physically broken down or malfunctioned.

When AUX is a warning

Carrier says AUX heat running in mild weather, above 40°F, may point to a dirty air filter. It lists a refrigerant leak, a malfunctioning sensor and raising the thermostat too quickly as other possible causes. With Carrollwood's mild winters, AUX coming on often on a mild day is worth a call. Change the filter first, then call a licensed contractor if it keeps happening.

More background: auxiliary heat and emergency heat.

These three checks need no tools and no open panels. Stop at anything that feels unsafe.

1. The air filter. ENERGY STAR says to inspect, clean or change air filters once a month in a central air conditioner, furnace or heat pump. It says a dirty filter can damage equipment and lead to early failure. See our guide to HVAC air filters.
2. Thermostat settings. ENERGY STAR's checklist includes checking thermostat settings. Confirm the mode is Heat or Cool as needed, the setpoint is above or below the room temperature, and the fan is on Auto. Our guide to thermostat settings covers the details.
3. Vents, returns and the outdoor unit. Make sure furniture, rugs or boxes are not blocking supply vents or return grilles. Outside, pull leaves and yard debris away from the unit by hand, and leave the fins alone.

If a breaker has tripped

If the breaker for the heat pump or air handler has tripped, leave it off. Call a licensed contractor to find out why before the system runs again.

ENERGY STAR says faulty electrical connections can cause unsafe operation and reduce the life of major components. It also says too much or too little refrigerant makes a system less efficient. Both are jobs for a licensed contractor, not a homeowner.

The EPA requires technicians who maintain, service, repair or dispose of equipment that could release ozone-depleting refrigerants into the atmosphere to be certified under Section 608. Blume has EPA Section 608 certified technicians. We are brand-agnostic and service all major manufacturers' equipment.

You get a written, upfront price before any work starts. When a repair and a replacement are both on the table, Blume shows the numbers side by side and does not sell equipment a home does not need. If replacement is the answer, the system is sized with an ACCA Manual J load calculation and selected with Manual S. Our guide on when to replace a heat pump walks through that decision.

Because Carrollwood is unincorporated, Hillsborough County handles permits here.

Repairs and parts

The county's list of work exempt from permits includes mechanical work that replaces any part, as long as the replacement does not alter its approval or make it unsafe. The county also says that the alteration, replacement or relocation of electric wiring systems or mechanical equipment is not a minor repair and does require a permit. Your contractor should tell you which side of that line a repair falls on.

Emergency replacement

The county says that if you have to replace equipment in an emergency, the permit application can be submitted within the next working business day.

Hiring and checking

The county tells homeowners to confirm that a contractor holds a valid license and is insured to work in Hillsborough County. It points to the Florida Department of Business & Professional Regulation to search for a contractor. If you hire a contractor, the county says they will obtain the necessary permits, and you can check status on HillsGovHub.

Nearby, we also cover heat pump repair in Tampa.