An outdoor air conditioning condenser unit on a concrete pad next to the gray vinyl siding of a residential home.

AC Maintenance in Louisville, KY

Air conditioners here run from May through September, so April is the time for a tune-up. Tell us about your system, and a licensed contractor who covers Jefferson County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Aerial view of a residential air conditioning condenser unit mounted on a concrete pad next to a house with vinyl siding and a sliding glass door.

Five months of hard running in Jefferson County heat

Your air conditioner works from May through September here, and on the afternoons that hit 86°F it runs long stretches just to hold the temperature you set. The compressor and the fan motor carry that load, and neither gets much rest on the hottest days.

Jefferson County has also seen 60 hail events and 249 damaging wind events over the past ten years, with hail up to 2 inches recorded. Hail can bend the fins on your outdoor coil, and wind can knock the unit out of level or throw debris into it. A tune-up checks the coil, the fan, and the refrigerant charge, so a problem you can't see from the yard gets caught before it leaves you without cooling in the middle of summer.

5 months
May through September, your air conditioner is on duty
86°F
the average summer afternoon it cools against
60 hail events
in ten years, and hail bends the fins on outdoor coils
249 wind events
in ten years, and wind drives debris into outdoor units
Isometric grey illustration of a cutaway single-story house showing interior rooms, ceiling ductwork connected to an indoor air handler, and an outdoor condenser unit linked by lines outside the wall.
Your air conditioner works hardest from June through August.

NOAA nClimDiv, 1991–2020 normals

Overhead view of an air conditioning condenser unit on a concrete pad next to a house with asphalt shingle roofing and vinyl siding.

Book your AC tune-up in April, before homes here start needing cooling in May.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.

Kentucky requires HVAC contractors to hold a state license.

Kentucky's Department of Housing, Buildings and Construction issues that license to the contractor, not to each job. So the same license that qualifies a contractor to install a system is what covers them showing up to maintain one.

Maintenance on an air conditioner usually means a technician opening the refrigerant side of the system to check charge and pressures. That work falls under a federal rule that applies in every state, not just Kentucky. Anyone who opens the refrigerant side needs EPA Section 608 certification, on top of the state license. A technician working on your air conditioner is answering to both.

Sources: Kentucky Legislative Research Commission · Kentucky Department of Housing, Buildings and Construction

What does AC maintenance include?
A technician cleans the condenser coil, checks the refrigerant charge, and tests the capacitor and contactor in the outdoor unit. Inside, they check the evaporator coil and the condensate drain, since a clogged drain is one of the more common reasons an AC stops cooling. They also check the thermostat and look at electrical connections for wear. Anyone checking the refrigerant side has to hold an EPA Section 608 certification, so make sure whoever comes out has that.
How often does an air conditioner need maintenance?
Once a year, before the cooling season starts. Homes here need cooling from May through September, so having it checked before that stretch begins gives a technician time to order any part that needs replacing before the heat sets in. Summer afternoons here average 86°F, and a system running that hard for five months does better with a coil that was cleaned and a charge that was checked ahead of time.
Is AC maintenance worth it?
Yes, because most of what causes a summer breakdown, a dirty coil, a weak capacitor, a low charge, shows up during a checkup before it leaves you without cooling. That matters more here, where the season runs five months and afternoons regularly hit 86°F. A contractor can price the actual visit for your system, but skipping the checkup tends to cost more later in the form of a bigger repair.