HVAC Installation in Lexington-Fayette urban county, KY
A new system here will heat from October through April and cool from June through September every year. Tell us about the house, and a licensed contractor who covers Fayette County will get in touch.
Tell us about the job
It takes about a minute.
A system that has to work most of the year
Lexington needs heat or cooling 11 months out of the year. Furnaces run October through April, with winter nights averaging 27°F. Then the switch flips and the AC runs June through September against afternoons averaging 85°F.
57.3% of homes here heat with electricity, so a system that holds up matters at both ends of the year. It also has to hold up through the weather that comes with it. The area has logged 14 winter storms and 108 damaging wind events over the last ten years, and in 2024 nearly a quarter of Kentucky households lost power for 24 hours or more. A new furnace or AC needs to be sized right and installed right, so it can pick back up and keep running once the power does.
- 7 months
- October through April, your system heats
- 4 months
- June through September, it cools
- 27°F
- the average winter night it heats against
- 85°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Kentucky requires HVAC contractors to hold a state license.
Kentucky's license is issued to the contractor by the Department of Housing, Buildings and Construction, not to each job that contractor takes on. That means the person or company doing your installation was tested and is on record with the state, and that record doesn't reset from one project to the next.
For an install like this one, the license tells you the contractor is qualified to do the work. It doesn't stand in for a permit. In most cities and counties here, putting in a new furnace, air conditioner or heat pump needs a permit from the local building office, and an inspector checks the finished work before it's signed off. That inspection is what confirms the gas and electrical connections were done right, separate from anything the state license covers.
Sources: Kentucky Legislative Research Commission · Kentucky Department of Housing, Buildings and Construction
- When should I replace my HVAC system?
- Replace it when repairs keep coming or the unit can't keep up anymore, rather than waiting for it to quit outright. Homes here need heat from October through April and cooling from June through September, so a failure in either stretch leaves you without it when you need it most. If a contractor is quoting a major repair on an older unit, ask what a replacement would run instead. That comparison usually makes the decision clear.
- Should I replace my furnace and air conditioner at the same time?
- If they're close in age, yes. A furnace and air conditioner installed together are matched to work as one system, which is how they're built to run. Putting in a new unit alongside one that's older and wearing differently means the two aren't working the way they were designed to. Replacing both now also means dealing with one job instead of coming back to do the other later.
- What happens during an HVAC installation?
- A contractor removes the old furnace and air conditioner, or heat pump, and sets the new equipment in place, connecting it to the ducts, the gas or electric line, the condensate drain and the outdoor unit. They'll check that the ductwork and electrical setup can handle the new equipment before finishing the connections. Replacing a furnace, air conditioner or heat pump in most cities and counties needs a permit from the local building office, with an inspection once the work is done. In Kentucky, the contractor doing the work has to hold a state license, so it's worth confirming that before anything starts.