'The strips do the heating': the Gainesville heat pump misunderstanding that doubles winter bills

One machine, both seasons

A heat pump heats your house by moving heat from the outdoor air to the indoor air, the same way it moves heat from indoors to outdoors in July. The resistance strips inside the air handler are a backup that switches on during defrost cycles, after a large thermostat change, or when the outdoor temperature drops far enough that the heat pump cannot keep up alone. In Gainesville that last condition happens on a dozen or so nights a year.

If the strips are doing most of your heating, your bill is roughly double what it should be, and something is wrong: a thermostat set to emergency heat, a failed outdoor unit nobody noticed because the house stayed warm, a refrigerant charge low enough that the compressor cannot pull heat, or a defrost system that has let the outdoor coil turn into a block of ice. All of those are fixable. None of them is how the system is supposed to work.

The longer answer

Where the belief comes from

Gainesville is a college town where the median resident is 25 and two-thirds of housing is rented. Thermostats get set by people who did not grow up with heat pumps, who notice the “aux heat” or “em heat” indicator, and who conclude that those words describe the real furnace. Many of the city’s 1970s and 1980s homes also went through a period when a failing heat pump was simply left on emergency heat all winter because the house stayed warm and nobody could see the meter spinning. Both habits outlive the people who started them.

What actually happens on a 35-degree morning

Refrigerant in the outdoor coil absorbs heat from the 35-degree air, which still holds plenty of it. The compressor concentrates that heat and the indoor coil releases it into air moving through the ducts at 90 to 100 degrees. Because the system moves heat rather than making it, every unit of electricity delivers roughly three units of heat. A strip delivers exactly one.

Around 40 degrees in Gainesville’s humid air, frost forms on the outdoor coil. The system runs in reverse briefly to melt it, the strips cover the indoor side so you do not feel cold air, and a plume of steam rises off the unit outside. Then it goes back to heating. That is the moment most people misread.

Why Gainesville suits heat pumps

The city’s heating season runs from about the first week of December to the last week of February, and even inside that window most hours are above 40. A heat pump spends nearly all its heating life in the range where it is three times as efficient as strips or a space heater. Only on the few hard-freeze nights near 28 degrees does the balance tip, and that is what the strips are for.

If GRU gas reaches the house, a furnace or a dual-fuel pairing is a fair alternative, and the utility’s conversion incentive can soften the switch. Co-op members on Clay Electric lines can collect $250 toward an efficient heat pump through the Energy Smart program. Ask about Cook’s enrollment status with both utilities when you call. [[CONFIRM WITH JERRY]]

Call about your heat pump

What drives the cost of heat pump work

Repairs are quoted after diagnosis and before the work. Installations are quoted after a free estimate visit. The variables:

New-system financing is offered, paid monthly, and walked through at the kitchen table; no lender or rate appears on this site. Washington’s heat pump credit is finished for anything installed once 2025 closed, so an honest quote leaves it out.

Booking a heat pump visit, day or night

Cook’s serves Gainesville and the rest of Alachua County from its headquarters in Palm Coast. A live dispatcher picks up at every hour, emergency crews run every night, and the invoice reads the same after 5 p.m. or on a weekend. For a heat pump that means the January night it stops heating is handled the same way as the July afternoon it stops cooling.

Routine work is scheduled in route blocks; a fall heating check in late October or early November is the single most useful appointment a Gainesville heat pump owner can book, because it catches the failed strip, the lazy defrost board and the thermostat parked on emergency heat before the first freeze does.

Brands

We install Lennox heat pumps, including the variable-speed systems that run quietest and hold humidity best through a Gainesville August. Repairs and maintenance cover Lennox, Carrier, Bryant, Trane and the rest of the major brands, along with the package heat pumps on older east-side homes and in student complexes and the ductless mini-split heat pumps that have multiplied in garage conversions near campus.