Seventeen freezing nights a year: the Gainesville case for a heat pump, and the case for gas

Two columns on a cold morning

Imagine two houses on the same Northwest Gainesville street, both built in 1978, both waking to 29 degrees on a January morning.

The first runs a heat pump. It has been working quietly since 5 a.m., drawing a few kilowatts, delivering 95-degree air, cycling through a defrost every so often with a puff of steam off the outdoor coil. The strips come on for a few minutes during defrost and when the thermostat is pushed up quickly. The GRU bill for the month will be higher than November’s but nothing like the summer peak.

The second runs a gas furnace with an air conditioner beside it. It lit at 5 a.m. with a soft whump, pushed 125-degree air through the vents, and had the house at 70 in twenty minutes. The gas portion of the GRU bill will show it, modestly; the electric portion barely moves. In July this house will be running an air conditioner that is just as old as the heat pump next door.

Neither house is wrong. The heat pump owner paid less for a single system that does both jobs. The furnace owner gets faster, hotter heat and a backup fuel on the few nights it counts. Which is right for yours depends on the three questions below.

The climate factor, stated plainly

Gainesville’s winter is short and sharp. The National Weather Service office covering Alachua County counts about seventeen freezes a year on the long-term trend, thirteen in 2024, clustered between early December and late February. Most winters bring a few hard freezes near 28 degrees. Daytime highs recover into the 60s almost immediately.

For equipment, that means:

• A heat pump spends almost all its heating hours above 35 degrees, where it is extremely efficient. The handful of nights in the 20s are where strips take over and bills spike.
• A furnace might run three hundred hours between October and March, then sits idle through nine humid months. Idle furnaces in Florida rust, collect spiders in burner tubes and develop igniter problems that show up on the first cold night.
• Emergency heat matters more than people think. A heat pump without working strips in a 28-degree snap leaves a house in the 50s by morning.

Which utility, which house

Who delivers the energy. GRU supplies natural gas inside its territory, and it pays a conversion rebate when a home switches a furnace from electric or oil to gas: up to $500 for the first unit and $300 for an additional one, with a cap per location. Outside GRU’s gas lines, in most of rural Alachua County, heating is electric from Clay Electric or propane from a delivered tank. The co-op, for its part, hands members $250 back on a qualifying efficient heat pump. Where Cook’s stands as a contractor under each of those programs is something to ask when you call. [[CONFIRM WITH JERRY]]

How old the house is. The pre-1930 homes of the Duckpond and Pleasant Street often have gas service and chimneys that once vented floor furnaces; a modern furnace fits their history. The 1970s and 1980s block and brick homes that make up the largest share of Gainesville’s stock are split between gas and all-electric. Haile Plantation, Blues Creek and the newer Oakmont and Tioga houses are overwhelmingly heat pump.

How the house is used. Student rentals and landlord-owned units favor the simplicity of a heat pump: one system, one service call. Owner-occupants who hate lukewarm vents or who lose power often in storm season sometimes prefer gas.

Talk through heat pump versus furnace

How Cook’s approaches heating work

Every heating visit starts with a diagnosis and a quoted price, and nothing is changed until you approve it. Cook’s picks up the phone around the clock and a cold-night call carries no surcharge, which matters most when the heat quits at midnight. We serve Gainesville, Alachua, Newberry, Hawthorne, Micanopy, Archer, Waldo and the rest of Alachua County from the company’s Palm Coast headquarters.

After the fix: a heating maintenance rhythm for this climate

Gainesville’s heating season is short enough that one well-timed visit covers it. We recommend a fall heating check once the oaks start dropping acorns in late October or November, ahead of the first freeze warning, that includes:

1. On heat pumps: strip heat amperage, sequencer operation, defrost cycle timing, reversing valve operation and refrigerant charge in heating mode.
2. On gas furnaces: heat exchanger inspection, burner cleaning, igniter and flame sensor condition, gas pressure, venting and a carbon monoxide check at the registers.
3. On both: thermostat configuration, filter, blower, and a conversation about what the first cold night should look like so nothing surprises you.

Homeowners can help between visits by running the heat for ten minutes in late October, long before it is needed, and by never using emergency heat as a shortcut. Agreement customers have this fall check put on the calendar for them; ask what the Gainesville agreement includes when you enroll. [[CONFIRM WITH JERRY]]