★ SERVING NORTH TEXAS SINCE 2008 ★
North Texas's Trusted Heating & Air Conditioning Experts
24/7 Emergency AC & Heating Repair, Installation & Maintenance in Collin, Grayson, Fannin & Hunt Counties
- 4.9/5 on Google (287 Reviews)
- Licensed & Insured
- Locally Owned
- 24/7 Emergency Service
Complete Heating, Cooling & Air Quality Service
One licensed crew for every season — cooling in the heat, heating in the freeze, and cleaner air year round.
AC Repair & Installation
Emergency cooling repair, replacements and tune-ups that keep North Texas homes cold through August.
Learn MoreHeating Services
Furnace and heat pump service ready for the hard freezes and cold snaps that hit North Texas.
Learn MoreIndoor Air Quality & Maintenance
Cleaner ductwork, better filtration and maintenance plans that stop breakdowns before they start.
Learn MoreAC Repair & Installation
When a Texas summer pushes past 105°, a failing air conditioner is an emergency. Our licensed techs diagnose and repair every major brand, and we install high-efficiency central air, heat pump and mini-split systems sized correctly for your home. Straight pricing, scheduled arrival windows, and no upsells.
Emergency AC Repair
Central Air Installation & Replacement
AC Tune-Ups & Seasonal Maintenance
Refrigerant (Freon) Recharge
Ductless Mini-Split Installation
Thermostat Installation (Smart & Wi-Fi)
Heating Services
North Texas winters are mild until they aren't. We repair and replace gas and electric furnaces plus heat pumps, and every heating visit includes a safety check on the heat exchanger, venting and carbon monoxide levels. If your system can't make it another season, we'll show you the numbers before you spend a dollar.
Furnace Repair & Replacement
Heat Pump Repair & Installation
Gas & Electric Furnace Service
Heating System Tune-Ups
Carbon Monoxide & Safety Inspections
Indoor Air Quality & Maintenance
Cedar pollen, red dirt and hard-sealed new construction make North Texas air tough on families. We clean and repair ductwork, install whole-home filtration, humidifiers and dehumidifiers, and handle HVAC rough-in for new builds. Preventive maintenance keeps efficiency high and surprise repairs low.
Duct Cleaning & Repair
Air Filtration & Purification Systems
Humidifiers & Dehumidifiers
Preventive Maintenance Plans
New Construction HVAC Installation
Why North Texas Homeowners Call Us First
Fixed Right the First Time
Fully stocked trucks and techs who diagnose the cause, not just the symptom.
Scheduled Appointment Times
A real arrival time — never an all-day window that wastes your day off.
Clean, Uniformed Technicians
Background-checked, boot covers on, and your home left exactly as we found it.
Fast 24/7 Emergency Response
No-cool or no-heat call at midnight? A live person answers and a truck rolls.
Proudly Serving North Texas
Lone Star Air is a North Texas HVAC company based in McKinney, with technicians on the road every day across Collin County, Grayson County, Fannin County and Hunt County. From Frisco new builds to century-old farmhouses outside Bonham, we service every system we sell.
★ LONE STAR COMFORT CLUB ★
Beat the Texas Heat — and the Cold Snaps
Membership in our maintenance plan keeps your system tuned before each season turns, and puts you at the front of the line when the whole county calls at once.
- Two tune-ups every year — spring AC and fall furnace
- Priority scheduling on emergency calls
- Discounted pricing on parts and repairs
- No overtime fees, nights or weekends
What North Texas Homeowners Are Saying
287 Google Reviews
“Our AC quit on the hottest Saturday of July and Lone Star Air had a tech in the driveway in under two hours. Fixed the capacitor, checked the whole system, no weekend surcharge.”
“They replaced our 19-year-old furnace right before the February freeze. Clean install, walked me through the new thermostat twice, and the house has never heated this evenly.”
“Third HVAC company we called and the only one that actually explained why the upstairs never cooled. Turned out to be duct work, not the unit. Saved us thousands.”
“We joined the Comfort Club two years ago and it has already paid for itself. They call us to schedule the tune-ups so I don't have to remember.”
“Emergency call at 11pm with no cool and a newborn in the house. Tech was polite, wore boot covers, and had us running by midnight. Can't ask for better.”
“Duct cleaning plus a new filtration system made a real difference for my son's allergies. Fair price, no pressure to buy anything extra.”
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Family-Owned, North Texas Built
Family-owned and operated, Lone Star Air has kept North Texas homes comfortable through scorching summers and hard freezes for over 15 years. Our licensed, background-checked technicians treat every home like their own.
- Texas ACR License #TACLA00000C
- EPA Certified Technicians
- Licensed & Insured
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Get a Free Quote
Tell us what your system is doing and we'll get you a straight answer — usually the same day. For no-cool or no-heat emergencies, call us any hour.
- (972) 555-0198
- service@lonestarair.com
- 3110 Comfort Lane, McKinney, TX 75070
- Mon–Fri 8AM–6PM · 24-Hour Emergency Service
Schedule Service
Choose your service, pick a time window, and tell us where to meet you.