From a dead furnace in January to a struggling AC in July, McAllister Heating & Cooling brings fast, honest HVAC service to homes across Lexington, Nicholasville, Georgetown, and nearby communities. Real techs. Straightforward pricing. Work that lasts.
When the heat quits or the AC won't keep up with a Kentucky summer, you don't need a sales pitch — you need a tech who shows up, finds the real problem, and fixes it cleanly. That's what McAllister Heating & Cooling has done for Lexington homeowners since 2004. We repair, install, and maintain residential heating and cooling across Lexington, Nicholasville, Georgetown, and nearby communities, six days a week, with honest diagnostics and work we stand behind.
Pick up the phone and you'll talk to a real person — not a call center. Tell us what your system is doing, and we'll send the right tech with the right parts.
Fast diagnosis and repair for air conditioners that stop cooling. We check refrigerant charge, capacitors, contactors, coils, and airflow — then fix the actual cause, not just the symptom, so your home cools evenly again and stays that way through the hottest Bluegrass afternoons.
Call about AC repair →Repair and maintenance for residential heat pumps. Whether it's short-cycling, blowing cool in heating mode, or tripping the breaker, our techs service every major brand and get your heat pump back to efficient, quiet operation before the season turns on you.
Call about heat pump service →Replacement and installation guidance for new furnaces. We size the unit to your home — not a one-size guess — explain your options in plain language, and install clean so you get reliable, even heat and a lower winter gas bill for years to come.
Call about furnace installation →Ductless mini split installation for additions and problem rooms. If one room never reaches temperature or you're finishing a bonus space, a mini split delivers quiet, zoned comfort without running new ductwork — and we install it neat and level.
Call about mini split install →Cleaning for dusty, restricted, and long-neglected duct runs. If your registers puff dust when the blower kicks on or your filters clog in a week, we remove the buildup that's choking your airflow, straining your equipment, and pushing debris back into the air you breathe.
Call about duct cleaning →Priority response for when the heat or the AC quits. Call us during business hours and we'll move your situation to the front of the board — a real Lexington tech, not a dispatcher reading a script, getting your family back to comfortable before the day is over.
Call for emergency service →“Quick response when I called about emergency heating and cooling.”
“They came out for our thermostat installation and had it sorted in one visit.”
“Great experience with the indoor air quality.”
We're not the biggest HVAC company in town — we're the one you'll actually want to call again.
Monday through Saturday, 7:00 AM to 7:00 PM. We book realistic windows and call when we're on the way — no mysterious four-hour waits.
Serving Lexington and the surrounding communities since 2004. We know the housing stock, the climate, and what actually fails here.
If a part fixes it, we fix it. If replacement genuinely makes more sense, we say so plainly — with numbers you can compare.
471 Google reviews from your neighbors. We earn them one clean install and one honest diagnostic at a time.
McAllister Heating & Cooling is based right here in Lexington, KY. Our techs roll to homes across Lexington, Nicholasville, Georgetown, and nearby communities — close enough that we can get to you fast when it matters.
Send us a few details and we'll get right back to you. For anything urgent — a furnace out, an AC blowing warm, a strange smell from the vents — calling is fastest.
☎ Call right now (859) 555-4683