Columbia County shops for heating equipment in January. The meter says shop for July.
Everything Cook's installs, from straight-cool condensers to geothermal loops, explained for a town that is hotter than the coast in August and colder than it in January.

The January habit
Ask around Lake City and you will hear a version of the same idea: this is far enough north that you buy for the cold. The 26-degree mornings are real, the heat strips do run, and anyone who lived through the hard freezes in the 2010s remembers the bill that followed.
But pull twelve months of statements from FPL or Clay Electric and the shape is unmistakable. The tall bars are June through September. The winter spike is one or two months, and even then it is usually smaller than August. Lake City sits far enough inland that afternoons run hotter than the coast, humidity stays oppressive from the first June thunderstorm to the last one in September, and the air conditioner carries the house for five months straight. Equipment chosen for January and tolerated in July is backwards. The right order is a cooling system that happens to heat well.
Efficiency arithmetic for a 90-degree inland afternoon
Efficiency ratings describe how much cooling you get per unit of electricity. The practical translation for this town: a system from the mid-1990s, the kind still running in a lot of Callaway and Summers Ridge houses, uses roughly a third more electricity to do the same job as a current mid-efficiency unit, and more than that against a top-tier variable-speed system. On a house that runs the compressor most of the afternoon from May to September, that difference is a line item every month for fifteen years.
Heating matters too, just less. A heat pump’s heating efficiency drops as the outdoor temperature falls, and on the dozen or so nights a year that Columbia County drops into the 20s, electric strip heat takes over at a much higher cost per hour. Equipment with better low-temperature performance trims those nights without turning the whole decision into a heating decision.

The sticker against the fifteen-year ledger
Every product in this catalog has a cheap version, a sensible version and a flagship version. The cheap version wins on day one and loses by about year four on a Lake City cooling load. The flagship wins on the ledger but takes longer to pay back, and whether that payback matters to you depends on how many more years you expect to own the house. Most of our Columbia County installs land in the middle: modulating equipment, two-stage at the least, properly matched indoor and outdoor units, and a few hundred dollars of surge protection, because this is lightning country and a fried control board erases a summer of savings.
The cost side is not only electricity. Cheap equipment on a 1970s block ranch with original duct will short-cycle, run humid and wear out early. Sensible equipment on the same house with the duct sealed will outlive the mortgage.
Ask about equipment for your house
What is in the catalog, by Lake City house
- Downtown and the 1950s-80s block ranches around Lake DeSoto: straight-cool air conditioners or heat pumps with matched air handlers; duct repair almost always comes first.
- Callaway, Cypress Landing, Summers Ridge (1990s-2000s): heat pump replacements for builder-grade systems reaching the end, with zoning for the two-stories.
- Arbor Greene, Hunter Oaks, Forest Cove (new construction): ventilation and filtration added to tight houses, and variable-speed upgrades when the builder unit disappoints.
- Manufactured homes across the county: packaged systems and the duct work underneath them.
- Acreage toward Fort White and Columbia City: geothermal for owners who want to stop replacing condensers, mini-splits for barns and workshops.
- Commercial along the I-75 and I-10 interchange: rooftop packaged units and the maintenance that keeps a hotel full of guests cool.
Paying over months instead of all at once
Spreading the cost of a high-efficiency replacement across monthly installments is an option. We do not publish the lender or the rate because they change; what we will do is put the monthly figure next to the projected bill savings on the same page so you can see whether the payment is mostly offset. Clay Electric also offers energy-conservation loans to its members for qualifying upgrades, which is worth asking about if you are on co-op power. Pricing a replacement costs you nothing, and the dispatcher at 866-266-5709 answers at any hour.
Shopping the catalog
If I only replace one piece this year, which one should it be?
The piece that is failing, followed by the indoor unit if it is more than a few years older than the outdoor one. A new condenser on a fifteen-year-old air handler runs below its rated efficiency and can void the matched-system warranty. We will tell you when a half-replacement is fine and when it is money thrown at an old coil.
Does the Clay Electric rebate apply to every heat pump you sell?
It applies to heat pumps that meet the program’s minimum efficiency, and the co-op pays the member directly after installation, typically within a few months. Inside the city on FPL, the rebate works differently and runs through enrolled contractors; ask where Cook’s stands on that enrollment. [[CONFIRM WITH JERRY]]
You are based more than two hours away. How does a warranty claim work?
The same way it works for a house down the road from us: you call 866-266-5709, the dispatcher schedules the truck, and the warranty paperwork is ours to handle. Equipment is registered in your name at install so the extended parts coverage is on file before anything can go wrong.
Can I still claim the federal 25C credit on new equipment?
Not if it went in after 2025 closed; the credit is finished. What is still live are the utility rebates and whatever Lennox is offering in a given season, and we will put the current numbers in writing on the quote.
Want the catalog narrowed to your house?
Tell us the year it was built and which utility sends the bill. We will tell you which three pages to read.