Your AC stopped working and it's 98 degrees outside. We get it. Katy AC Pros provides fast, honest air conditioning repair with same-day service for most calls.
Call (281) 698-0650 — Free EstimateWhen your air conditioning fails in Katy, every hour matters. Summer temperatures in the greater Houston area regularly exceed 100°F, and homes can reach dangerous indoor temperatures within hours of an AC failure. That's why Katy AC Pros prioritizes fast response times — most repair calls received before 2 PM are completed the same day.
Our technicians arrive equipped to diagnose and repair the most common AC problems on the first visit. We stock our vehicles with the parts and refrigerant needed for the repairs we see most often in Katy homes, which means fewer return trips and less time without cooling.
Refrigerant Leaks and Recharging: Low refrigerant is the most common reason an AC system stops cooling effectively. In Katy's climate, your system works overtime from April through October — that's 7 months of heavy use that accelerates wear on refrigerant lines. We use electronic leak detection to find the exact location, repair the leak, and recharge to manufacturer specifications. A properly charged system cools more efficiently and costs less to run.
Frozen Evaporator Coils: If you see ice forming on your AC unit or notice warm air from the vents, the evaporator coil is likely frozen. This usually stems from restricted airflow (dirty filters, blocked vents) or low refrigerant. We thaw the system safely, identify the root cause, and fix it so it doesn't happen again. Left untreated, frozen coils can damage your compressor — the most expensive component in your system.
Compressor Issues: The compressor is the heart of your AC system. Common symptoms of compressor problems include the outdoor unit humming but not starting, the system short-cycling (turning on and off rapidly), or warm air despite the system running. Some compressor issues are repairable — a failed start capacitor or relay, for example. Others indicate the compressor itself has failed, which may mean it's time to consider replacement depending on the age of your system.
Electrical and Control Failures: Capacitors, contactors, and control boards are the most common electrical failures we see. Katy's frequent thunderstorms and power fluctuations take a toll on sensitive electronics. Symptoms include the AC not responding to the thermostat, the outdoor fan not spinning, or the system tripping your breaker repeatedly. These are typically same-day repairs.
Drainage Problems: Houston's extreme humidity means your AC removes gallons of moisture from the air daily. Clogged condensate drain lines lead to water damage, mold growth, and can cause your system to shut down via the safety float switch. We clear drain lines, install safety switches where missing, and treat lines to prevent algae buildup — a common problem in our humid climate.
Blower Motor and Fan Failures: If air isn't moving through your vents despite the system running, the indoor blower motor may have failed. Likewise, if the outdoor fan isn't spinning, your system can't release heat and will eventually shut down on high pressure. We carry replacement motors and capacitors for most common residential units.
When you call Katy AC Pros, here's what to expect:
We service every major residential AC brand installed in Katy homes: Trane, Carrier, Lennox, Goodman, Rheem, York, Daikin, American Standard, Amana, and more. Whether your system is 2 years old or 20, our technicians have the training and parts to get it running. We also work on heat pumps, package units, and light commercial systems.
This is the most common search we see from Katy homeowners — and it's usually one of four things:
A clogged filter restricts airflow over the evaporator coil. The coil gets too cold, freezes, and stops absorbing heat. This is the #1 cause of "AC running but not cooling" calls in Katy. Check your filter first — if you can't see light through it, replace it immediately. If the system has been running with a clogged filter for hours, you may need to turn it off for 2-3 hours to let the coil thaw before restarting.
Your AC doesn't "use up" refrigerant like gas in a car. If it's low, there's a leak somewhere. Signs include: the system blowing cool but not cold air, ice on the refrigerant lines, or hissing sounds near the indoor unit. Topping off refrigerant without fixing the leak is a temporary bandage — it'll be low again within weeks. We find and repair the leak first.
Sometimes the problem isn't the AC at all. Dead thermostat batteries, incorrect settings (fan set to "on" instead of "auto"), or a thermostat that's lost its calibration can all make it seem like the AC isn't working. Before calling for repair, check that your thermostat is set to "cool," the temperature is set below the current room temperature, and the fan is set to "auto."
If the indoor fan is blowing but the outdoor unit isn't running, you'll get room-temperature air from the vents. Check the breaker — the outdoor unit is usually on a dedicated 240V circuit. If the breaker tripped, reset it once. If it trips again immediately, don't keep resetting — there's an electrical problem that needs professional diagnosis.
We believe in transparent pricing. Here's what the most common AC repairs cost in the Katy area:
All prices include parts and labor. We always provide a written estimate before starting, and there's no charge if you decide not to proceed with the repair.
"AC stopped blowing cold air on a Friday evening. Called Katy AC Pros and they had someone out within 90 minutes. Bad capacitor — $180 and we were back to cool in under an hour. Honest, fast, fair price."
— Sarah M., Katy TX"Our Trane system was leaking refrigerant. Another company quoted $800+ just to 'recharge' it without fixing the leak. Katy AC Pros found the leak at a coil connection, repaired it properly, and recharged for $380 total. Night and day difference in service quality."
— Carlos G., Cinco RanchFor most calls received before 2 PM, we dispatch a technician the same day. Emergency calls are prioritized — we typically arrive within 1-2 hours for no-cooling emergencies in the Katy area.
Common repairs range from $150-$600. Capacitor replacement runs $150-$250, refrigerant recharge $200-$400, and blower motor replacement $300-$600. We always provide a free estimate before starting work.
The most common causes are low refrigerant (from a leak), a dirty or clogged air filter restricting airflow, a frozen evaporator coil, or a failing compressor. Start by checking your filter — if it's clean and the problem persists, call us for a professional diagnosis.
Yes, we service all major brands including Trane, Carrier, Lennox, Goodman, Rheem, York, Daikin, American Standard, and more. Our technicians are trained on both residential and light commercial systems.
We provide same-day AC repair throughout Katy, TX and all surrounding communities.