If your AC unit is frozen or covered in ice, it’s not just a minor issue—it can completely stop your system from cooling.
In Houston’s heat and humidity, a frozen AC unit usually means airflow or refrigerant problems that need immediate attention.
Our local technicians diagnose and fix the issue quickly—often the same day.
Same-day service • Honest diagnostics • No upselling • 5-star local technicians
The most common causes we see in Houston homes:
Restricted airflow (dirty air filters or blocked vents)
Low refrigerant or leaks
Frozen evaporator coils
Blower motor issues
Dirty coils reducing heat absorption
👉 Ice on your AC is a symptom—the real problem is inside the system.
We identify the root cause and fix it properly.
A frozen AC unit won’t fix itself—and continuing to run it can cause more damage.
Ice buildup on indoor or outdoor unit
AC not cooling properly
Weak or no airflow from vents
Water leaking as ice melts
System running constantly
🚨 If you see ice, turn the system off and call for service.
Before calling, take these steps:
Turn off your AC system
Switch fan to “ON” to help thaw ice
Check and replace your air filter if needed
👉 This may help temporarily—but the underlying issue still needs repair.
Energy Corridor
Searching for “frozen AC unit near me”? We’re already working in your area.
👉 We arrive fast, diagnose the issue, and fix it correctly.
We Fix — Not Sell
No-pressure diagnostics. No unnecessary replacements.
Same-Day Service
We show up fast and fix it right.
Upfront Pricing
No surprises before work begins.
Local Technicians You Can Trust
Experienced, professional, and honest.
EXCELLENT Based on 142 reviews Posted on Matthew FloresTrustindex verifies that the original source of the review is Google. Awesome response time. Fair price and no surprises. Modern Air is my official HVAC company!Posted on Ron SelvageTrustindex verifies that the original source of the review is Google. Had a problem with my AC where it would only blow out hot air. Ot was Sunday, so I made an appointment for Monday afternoon online with Modern Air of Katie. Monday morning came around and a morning meeting I had was canceled. I called Modern Air and they were about to move up my appointment right away. Charles showed up on time and he diagnosed the problem, gave me a quote, and then replaced a part it in about 15 minutes. Very quick and at a reasonable price. I was very happy with their service and would definitely use them again.Posted on Jesse RobertsTrustindex verifies that the original source of the review is Google. Had a great experience with Charles. He took care of my AC issues and was easy to work with. Would recommend.Posted on Jeena RobertsTrustindex verifies that the original source of the review is Google. I called in a panic at 1am and the tech was at my house within 30 minutes of my call to Diagnose and repair. Was efficient and thorough. Did not try to upsell any part or cost. Technician Went out of his way to find a replacement part under warranty so I paid no cost on the 2500$ part. He uninstalled my Blower motor prior to leaving, got the new replacement at 8am when they opened and had it Installed and my AC working by 10am. My only charge was labor. Highly recommend. Prompt. On time. Efficient. Knowledgeable. Cost effective. 24 hour emergency repair with no Added cost for a 1am service call. Came out as soon as he got My call. Five stars!!Posted on Bary BrooksTrustindex verifies that the original source of the review is Google. I highly recommend Charles at Modern Air of Katy for his exceptional service and expertise. I recently encountered an urgent AC issue just 24 hours before a new tenant was scheduled to move in. Charles arrived promptly, conducted a thorough diagnostic, and had the system functioning perfectly in short order. His efficiency and attention to detail during such a high-pressure situation were impressive. It is rare to find this level of professionalism and customer care, and I will certainly be relying on his services for all my future HVAC needsPosted on Catha JaynesTrustindex verifies that the original source of the review is Google. Charles was extremely prompt and appeared to be quite knowledgable. They are now my go-to HVAC company.Posted on Marisse MatulacTrustindex verifies that the original source of the review is Google. Exceptional service! Charles Guthrie of Modern Air of Katy, arrived on time even calling him late afternoon, responded immediately,very friendly and polite, diagnosed the issue quickly, and fixed it at a fair and reasonable price, Very professional and honest! i will definitely be using their service for yearly maintenance.Posted on rand42Trustindex verifies that the original source of the review is Google. Exceptional service. We made an appointment; he called when he was on his way and arrived in a timely manner (Copperfield). Very knowledgeable and professional. He walked me through the details, explained what was going on and made repairs. I would highly recommend for anyone needing their systems checked out or repaired. Also, I will be switching my heating and air conditioning annual maintenance to them. With that, I want to add of all the companies I have used over the years Modern Air of Katy has been the best.Posted on Temi LTrustindex verifies that the original source of the review is Google. Charles assisted us with an ac inspection on our new house. We recently had some issues with the ac due to critters getting to the wires and he was able to come out timely and helped us fix it at a reasonable price! He’s very personable, works within your budget while giving great advice. We’re very happy to have found him and will use him for all our ac needs. Thank you, Charles!
A frozen AC unit does NOT usually mean you need a new system.
In most cases, the issue can be repaired quickly.
We only recommend replacement when:
The system is severely damaged
Repair costs don’t make sense
The unit is near end of life
👉 You’ll get honest guidance—not a sales pitch.
Prevent Your AC from Freezing Again
Frozen units are often preventable.
Regular maintenance helps:
Keep airflow unrestricted
Prevent refrigerant issues
Maintain system performance
Ask about our maintenance plans during your visit.
These are the most common AC issues we fix every day in Houston. If you’re experiencing one of these, we can diagnose and fix it—often the same day:
AC Not Cooling – system running but not cooling your home
AC Blowing Warm Air – warm air coming from your vents
Frozen AC Unit – ice buildup on your system
AC Not Turning On – system won’t start at all
AC Leaking Water – water around your unit or ceiling damage
Outside AC Unit Not Running – outdoor system not turning on
Most AC problems can be diagnosed and repaired the same day.
Modern Air of Katy — Fast, Honest AC Repair in Houston