One more repair or a new system: how Lake City homeowners decide
Half the installation calls we take in Lake City start as repair calls. This page lays out the comparison honestly, then what happens if a new system wins.

The comparison, side by side
A system installed when Callaway was being built out, roughly 1998 to 2007, is now between eighteen and twenty-seven years old. When one of those fails in July, the homeowner is usually holding two options, and they look like this:
| Repair the old system | Install a new one | |
|---|---|---|
| Up-front cost | Lower this week | Higher this week, financing available |
| Likely life after the work | One to three seasons on a system that age | Fifteen-plus with maintenance |
| Summer FPL or Clay Electric bills | Unchanged, often rising | Noticeably lower with a SEER2 15.2-plus unit |
| Refrigerant | R-22 on the oldest; expensive and scarce | Current refrigerant, parts readily available |
| Warranty | On the part only | Full manufacturer warranty plus Cook’s labor guarantee |
| Rebates | None | FPL’s A/C rebate on qualifying systems; Clay Electric’s heat pump rebate for co-op members |
| Risk of a second failure this summer | Real | Essentially none |
Our rule, stated plainly: if the repair quote is a third or more of a new system and the equipment is past fifteen, replacement wins on arithmetic alone. Under that line, repair is usually the right call, and we’ll make it.
Who calls Cook’s about a new system
In Lake City the installation calls come from four directions.
- The repair-that-became-a-replacement. The compressor on a 2004 unit is gone, or the evaporator coil is leaking on an R-22 system. The repair would be a third of a new unit, and the unit is twenty.
- The high-bill household. Nothing is broken, but the summer statements have climbed year over year and the system runs from noon to midnight. Often a 10-SEER unit from the early 2000s that a modern system cuts in half on running cost.
- The storm claim. A limb came through the condenser in Helene, or a surge took out the compressor. The insurance adjuster needs an estimate and the homeowner needs cooling.
- The new owner. A rental in the historic blocks near Lake DeSoto changed hands, the inspection flagged the system, and the buyer wants it done before move-in.

Three Lake City scenarios
A Summers Ridge brick home, built 2001. Original 3-ton split system, R-22, compressor failed. The duct is in decent shape. Straight changeout: new Lennox condenser and air handler, new line set because the old one is R-22 contaminated, new pad, new disconnect, surge protector added. One day. The homeowner is on FPL inside the city, so the FPL rebate on a qualifying SEER2 system applies if the installing contractor is enrolled in that program; ask where Cook’s stands. [[CONFIRM WITH JERRY]]
A 1978 block ranch in Country Club Estates. The system is only nine years old but was undersized for the house when installed, and the attic duct is original, crushed and leaking. The honest answer here is not a bigger air conditioner; it’s a correctly sized one plus new ductwork. Two days. The second day costs more than the first, and the comfort change is bigger.
A manufactured home on five acres outside Fort White, on Clay Electric. Package unit on a ground pad, belly-board duct under the house half fallen. The replacement is a packaged heat pump sized for the home, plus repair and insulation of the duct run underneath. The Clay Electric Energy Smart rebate pays the member directly on a qualifying heat pump, and the co-op offers energy-conservation loans; we’ll help with the paperwork.
Get a free installation estimate
How the installation runs
- The estimate visit. A technician, not a salesperson, measures the house, inspects the duct and the electrical, and runs a load calculation. The number is based on square footage, insulation, windows and orientation, not on what size the old unit was. The estimate is free and in writing.
- Equipment choice. We install Lennox. You’ll see two or three options at different efficiency tiers with the running-cost difference explained in plain terms, plus the financing options on each.
- Permit. Cook’s pulls it. Inspection is scheduled after the install.
- Install day. Crew arrives in the morning. Old equipment recovered and removed. New air handler set, new condenser on a level pad, line set replaced or flushed, drain re-run with a float switch, thermostat installed, electrical checked and surge protection added.
- Commissioning. Refrigerant charge set by weight and verified by superheat and subcooling. Airflow measured. Every register checked. Thermostat programmed with you standing there.
- Walk-through. Filter location and size, drain cleanout, what the thermostat is doing, and what the warranty requires of you.

What’s guaranteed
- Satisfaction. If the system isn’t doing what we said it would do, we come back and make it right.
- Manufacturer warranty. Registered by us, in your name, before we leave the driveway. Lennox terms vary by product line and we’ll show you the exact coverage on your equipment.
- Labor. Cook’s warrants its installation workmanship; the term is confirmed on your proposal [[CONFIRM WITH JERRY]].
- No after-hours premium. If the new system has a problem on a Sunday, the call costs the same as on a Monday.
- Honest sizing. We won’t upsize to make a weak duct system feel better. If the duct is the problem, the estimate says so.
Timing and the drive from Palm Coast
Lake City is a long run from the shop, so installations are scheduled rather than squeezed in. Most replacements happen within a week or two of a signed proposal, faster if the equipment is in stock and slower in late June when every crew is booked. Spring and fall are the open months, and they’re also when the old system can limp along while you wait. If you’re in the middle of a heat wave with no cooling, say so when you call; we’ll get a temporary repair on the old unit when it’s possible and move the install up.
Installation questions, answered for Lake City
If it's 95 degrees out, can the install still happen?
Yes. Summer is when most systems fail, so summer is when most are replaced. The crew works the attic early and the outdoor unit in the afternoon, and we’ll get a temporary fix on the old system if there’s a wait for equipment.
Is there anything I should do before the crew arrives?
Clear a path to the air handler and the outdoor unit, move cars out of the driveway, and put pets somewhere calm. If the air handler is in a closet, empty the closet. That’s all; the crew brings drop cloths and handles the rest.
How much of the day will it take?
A straight changeout of a split system is one working day, start to finish, with cooling restored before the crew leaves. Add a second day if duct is being replaced or the air handler is moving.
Does a replacement need a permit in Columbia County?
Mechanical replacements are permitted work, and Cook’s pulls the permit and schedules the inspection as part of the job. Whether it files with the City of Lake City or the county depends on your address, and we handle that for you.
What happens to my old system?
We recover the refrigerant legally, haul the equipment away, and dispose of it. Nothing is left in your yard.
Other services in Lake City
- A/C ServicesRepair, tune-ups, replacement and commercial work, with the invoice explained before you pay it.
- A/C RepairA quick checklist you can run yourself, then a technician who finishes the job. All brands.
- A/C MaintenanceSpring and fall visits that keep an aging system off the replacement list a few more years.
- ThermostatsReplacement, wiring, heat pump setup and the app, done right the first time.
- GeothermalGround-source heating and cooling for rural lots, designed around the aquifer and the ground under your feet.
- Heating ServicesHeat pumps, gas furnaces, propane, strip heat. Repairs, tune-ups and replacements, any hour.
- Heat PumpRepair, maintenance and new heat pumps for a town that both bakes and freezes.
- Heat Pump RepairDecision tree first, then the fix. Lightning, freezes and humidity are all accounted for.
- Heat Pump MaintenanceTwo visits a year, tuned to the kind of house you live in and the way it was ducted.
- Heat Pump InstallationSized to the house, installed in a day on most homes, with your utility's rebate rules explained.
- Furnace RepairGas, propane and electric furnaces. Safety checks first, then the fix, any hour of the night.
- Furnace MaintenanceA fall inspection that checks the safety side first and the efficiency side second.
- Furnace InstallationGas, propane, electric and dual-fuel installs, with the comparison done honestly before you buy.
- Air QualityHumidity control, filtration, ventilation and purification, matched to the house and the season.
- Indoor Air QualityDehumidification, sealed returns, media filtration and ventilation, done in the order that works here.
- Duct CleaningHonest about when it's worth doing, thorough when it is. Sealing and replacement quoted alongside.
- CommercialRooftop units, splits, make-up air and controls for Lake City's hotels, clinics, shops and warehouses.
Want both numbers on the table?
Estimates on new systems are free. Call and we'll put the repair and the replacement side by side.