A 1974 ranch in Suburban Heights and a 2019 house in Oakmont need two different tune-ups
Forty-two percent of Gainesville's homes were built before 1980. Another third went up in the 1980s and 1990s. The maintenance a system needs depends heavily on which of those houses it lives in.

Four Gainesville houses, four maintenance jobs
Walk the city by decade and the air conditioning changes with the architecture.
The pre-1930 wood-frame homes of the Duckpond, Pleasant Street and the Southeast Gainesville Residential District never had ducts. Air handlers were squeezed into attics decades later, with flex runs snaking between rafters and condensate lines that travel a long way to daylight. Maintenance here is about drainage, duct connections and keeping an attic unit alive in a space that reaches 130 degrees in July.
The 1970s and 1980s ranches and split-levels of Northwest Gainesville, Suburban Heights and the first Haile Plantation phases are the city’s largest cohort. Many still run original duct trunks and some run equipment well past fifteen years. Maintenance is about airflow, refrigerant charge, and watching aging compressors and motors for the readings that precede a failure.
The 1990s and 2000s two-stories of later Haile Plantation, Blues Creek and Westchester have systems in their second or third generation and ducts in their first. The maintenance question is usually whether the ducts are letting the equipment do its job.
The 2010s-and-newer homes of Oakmont and the Town of Tioga have variable-speed equipment, communicating thermostats and sealed attics. The job is less about cleaning and more about verifying the controls, the condensate pump and the humidity settings, and keeping the manufacturer’s warranty valid with documented service.
Only about one home in ten in Gainesville was built after 2010. Most of our tune-ups are in the first three groups.

What you can check yourself, by month
Before any truck comes, a homeowner can do a fair amount. This is the order the Gainesville calendar suggests.
- Late January. Oak pollen starts. Put in a fresh filter now and plan on another by early March; under heavy canopy, check it every three weeks until May.
- February. Walk around the outdoor unit. Pull leaves and acorns off the top grille, cut back anything growing within two feet, and make sure the pad is level. Shaded lots settle, and a tilted compressor wears unevenly.
- March. Run the system in cooling for an hour on a warm afternoon. Feel the air at the farthest vent. Listen at the outdoor unit for anything other than a steady hum.
- May. Find the condensate drain where it exits the house. Pour a cup of water into the air handler’s drain access if you know where it is, and confirm it comes out. Look for a float switch on the pan; if there is none, note it.
- June through September. Watch the GRU bill month over month. A jump without a weather explanation is a reading, not a mystery.
- October. Repeat the filter and the outdoor-unit walk. The fall tune-up window opens.
When to stop and make the call
Some things a homeowner should not touch, and some readings should end the checklist.
- Ice anywhere on the copper lines or the indoor coil.
- Water in the pan or on the floor around the air handler, or a stain on the ceiling below an attic unit.
- A breaker that has tripped more than once.
- A burning or electrical smell, or a sweet chemical smell near the indoor unit.
- Any sound that is new: grinding, screeching, a hard buzz, or a clank at startup.
- An outdoor unit that hums but whose fan does not turn. Do not spin it with a stick, however many videos suggest it.
- A filter that is damp. Damp filters mean a drain or coil problem upstream.
Schedule a Gainesville tune-up
What Cook’s does on a maintenance visit
A seasonal tune-up in Gainesville is a fixed routine with the house-specific additions above. The technician:
- Replaces or cleans the filter and records its size and rating.
- Cleans the indoor coil as access allows and clears the drain line, trap and pan; tests or installs the float switch.
- Rinses the outdoor coil from the inside out and clears debris from the base, which under Gainesville’s oaks is usually a double handful.
- Measures refrigerant pressures and line temperatures and computes superheat and subcooling against the nameplate; tops off only after a leak search if the charge is low.
- Tests capacitors, contactor, relays and motor amperage against ratings and notes anything drifting toward failure.
- Checks the thermostat calibration and, on communicating systems, the humidity and fan settings.
- Measures the temperature split and static pressure, which together tell us whether ducts are restricting the system.
- Inspects visible ductwork and the air handler cabinet for leaks, sagging or disconnected runs.
- Writes it all down and walks you through it.

After the visit
You get a written report with the readings, a list of anything that should be fixed and anything that should be watched, and a date for the next visit. If you hold a Cook’s agreement, any repair that grows out of the tune-up is billed at the member rate and scheduled ahead of the line; visit count and inclusions for Gainesville are pending the owner’s confirmation. [[CONFIRM WITH JERRY]]
Between visits, the homeowner’s calendar above is the maintenance plan. The two habits that matter most in this city are the filter during pollen season and the outdoor unit under canopy. Everything else we can catch twice a year; those two we cannot.
A note on rentals
With roughly two-thirds of Gainesville’s housing rented, a great deal of maintenance here is ordered by landlords and property managers rather than occupants. We coordinate access with tenants, document each unit separately, and can schedule whole buildings of package units or PTACs in a single block. Ask for a multi-unit quote when you call.
Maintenance questions we get from Gainesville owners
The system came with the house and we have no idea who put it in. Is that a problem?
Not at all. Most of the equipment we maintain in Gainesville was installed by someone else, often years before the current owner arrived. We read the nameplate, check for a permit sticker, and go from there. Brand does not matter either; we service all major makes, not only the Lennox systems we install.
Our garage apartment has a ductless unit. Is that on the maintenance list?
Yes. Mini-splits need their own routine: indoor blower wheel and filters cleaned, the drain and pump checked, the outdoor coil rinsed, refrigerant verified. Garage and accessory-unit conversions near campus have put a lot of these in Gainesville, and they get neglected because they are quiet.
If the tune-up turns up something broken, does the visit turn into a repair?
Only if you say so. You get the finding, the price and the choice. Small items like a weak capacitor can usually be handled on the spot from the truck; anything larger is written up for you to decide on, with no pressure to decide that day.
Does a tune-up include looking at the ducts in the attic?
A visual check at the air handler and the accessible runs, yes, plus airflow and temperature readings that reveal leakage even where we cannot see. A full pressurized duct test is a separate service; GRU sells one as well, and we can tell you whether your readings justify it.
Other services in Gainesville
- A/C ServicesRepair, maintenance and replacement for every kind of cooling system in Alachua County, from one number.
- A/C RepairResidential and commercial cooling repair, every brand, price given before the panel comes off.
- A/C InstallationReplacement systems sized for the house, quoted free, installed around your week.
- ThermostatsSmart, programmable and simple thermostats installed and configured to the system they control.
- GeothermalGround-source heating and cooling for the Gainesville properties where it genuinely makes sense.
- Heating ServicesHeat pumps, gas and electric furnaces, strips and dual-fuel: repaired, maintained and installed.
- Heat PumpRepair, maintenance and installation for the system most Gainesville homes already own.
- Heat Pump RepairHeat pump diagnosis and repair for every brand, with the price in your hand before the work starts.
- Heat Pump MaintenanceTwice-yearly heat pump care that decides, honestly, between keep, repair and replace.
- Heat Pump InstallationLennox heat pump replacement sized to the house and both of its seasons.
- Furnace RepairGas, propane and electric furnace repair for homes and businesses, quoted before the work.
- Furnace MaintenanceAnnual furnace maintenance built around the house it heats and the fuel it burns.
- Furnace InstallationGas, propane and dual-fuel furnace installation where the fuel and the house justify it.
- Air QualityFiltration, purification, humidity and duct sealing, timed to the seasons that make Gainesville air hard to breathe.
- Indoor Air QualityTesting, filtration, dehumidification and ventilation designed around the equipment you already have.
- Duct CleaningDuct cleaning, sealing and repair for Gainesville attics, chosen by inspection rather than habit.
- CommercialRooftop units, split systems and multifamily equipment for Gainesville businesses and property managers.
Spring or fall, book the tune-up before the season does it for you
March and October fill fast in Alachua County. Same phone number, any hour.