Castle Hills, TX · 78213
AC Repair in Castle Hills, TX — AC Not Cooling? Same-Day Fix.
Air conditioner not blowing cold air in Castle Hills? We're the AC repair company near you — same-day service, written price before any work, and an honest fix. within 25 minutes response. Emergency AC repair available after hours.
Talk to Clint Carnes
Owner · Master HVAC, TX
Shoe covers on, drop cloths down, job site spotless when we leave. Repair-first — we fix what's broken instead of upselling a new system.
Repair First. Replace Only If Necessary.
A lot of companies show up hoping to sell you a system. We show up to fix your air conditioner.
We diagnose before we quote
FREE service call. We find out what's actually wrong before anybody talks about money.
If it can be fixed, we fix it
When a repair at a fair price is the smart call, that's what we recommend — and that's what we do.
Replacement only when it's necessary
We'll only bring up a new system when the repair truly doesn't make sense — and you decide, not us.
Cool air back on today in Castle Hills
Castle Hills is mostly mid-century homes from the '50s, '60s, and '70s — patchwork ductwork from decades of additions, tight mechanical closets, and original line sets are the norm. We know what to look for.
You'll get a real arrival window, a written price before any wrench turns, and a fix that holds up — most Castle Hills repairs are done on the first visit. No call center routing you in circles, no commission salesperson upselling a new system you don't need. Just a straight answer, a fair price, and your house comfortable again before bedtime.
Why isn't my AC cooling? Common Castle Hills AC problems
If your AC is running but not cooling, blowing warm air, or won't turn on at all, you're not alone — these six failures account for most summer air conditioner repair calls in the 78213 area. We can usually finish the fix on the first visit.
AC blowing warm air
Usually a failed capacitor, low refrigerant, or a contactor that won't pull in. Diagnosed in under 20 minutes, fixed the same visit on most calls.
Outdoor unit not running
Capacitor (most common), contactor, or a tripped breaker. We carry universal capacitors and contactors on every truck — no second trip.
Frozen coil / water leaking
Dirty coil, low charge, or a clogged drain line. We thaw it, fix the root cause, and clear the line. Don't ignore it — frozen coils kill compressors.
Breaker tripping when AC starts
Shorted compressor, failing capacitor, or weak contactor. We test under load with clamp meters before swapping parts.
Thermostat blank or won't change temp
Dead batteries, blown 24V fuse on the air handler, or a tripped float switch. Often a 15-minute, low-cost fix.
Short-cycling (off after 1–2 min)
Overheating compressor, dirty condenser coil, or wrong refrigerant charge. We pull pressures plus superheat/subcool to find the actual cause.
Recent repairs we've done in Castle Hills
Pulled directly from our Housecall Pro service records and updated daily. Customer details removed for privacy.
Each entry is a real repair completed by our team in the Castle Hills area.
What every truck rolling to Castle Hills carries
Universal capacitors (5–80 MFD) and 1/3–1 HP fan motors
First-visit fix on the #1 and #2 most common failures.
R-410A and R-22 (legacy units), recovery machine, nitrogen
Refrigerant leaks diagnosed and recharged in the same trip.
Common contactors, transformers, defrost boards, control boards
Most board failures handled without a parts run.
Manometers, clamp meters, refrigerant scales, electronic leak detectors
We diagnose before we replace. Every part swap is justified on paper.
Castle Hills AC repair pricing
Same prices as the rest of our service area — no city surcharge. Tap a repair for the full breakdown.
Not sure what broke? See every repair we do and what it costs.
What you get when we show up
Comfortable house, clean job, fair price — every visit in Castle Hills.
A real arrival window
We text when we're on the way in Castle Hills so you're not stuck waiting all afternoon. Most repair calls handled the same day.
Repair first, replace only when it's right
A $90 capacitor stays a $90 capacitor. We don't pitch a new system unless the math actually saves you money — and we'll show you the math.
Written price before any work
You see the number on paper, sign off, then we turn a wrench. No surprise add-ons and no price change at the door.
Shoe covers on. Job site spotless.
Drop cloths under the unit, debris hauled out, condensate cleaned up. We leave your house cleaner than we found it.
Techs you're comfortable having in your home
Background checked, in uniform, fresh-smelling, polite to your kids and your dog. No smoking, no vaping, no drinking on your property — ever.
Backed by a licensed master, not a call center
Texas master HVAC license on every job. If something needs to be made right, the owner picks up the phone — not a third-party dispatcher.
Live from our dispatch board
Recent jobs across Castle Hills
Pulled straight from our Housecall Pro records and refreshed daily. Customer details removed — just the work, dates, and equipment so you can see how often we're in your neighborhood.
Recent repairs
Capacitors, motors, refrigerant, drain lines
- Jun 11Capacitor replacement — cooling restored same visit· Castle Hills 78213
- Jun 8Contactor replacement and amp-draw check· Castle Hills 78213
- Jun 4Refrigerant leak repair and recharge· Castle Hills 78213
- May 31Condensate drain line cleared with nitrogen· Castle Hills 78213
- May 27Condenser fan motor replacement· Castle Hills 78213
- May 22Control board replacement· Castle Hills 78213
- May 12Evaporator coil replacement under warranty· Castle Hills 78213
Recent installs
Full system replacements, all major brands
- Jun 9Goodman 3-ton — 3-ton Goodman AC system installed· Castle Hills 78213
- Jun 2Carrier 2.5-ton — 2.5-ton Carrier heat pump system installed· Castle Hills 78213
- May 25Armstrong 4-ton — 4-ton Armstrong AC system installed· Castle Hills 78213
- May 19Armstrong 5-ton — 5-ton Armstrong heat pump system installed· Castle Hills 78213
- May 17Goodman 3-ton — 3-ton Goodman AC system installed· Castle Hills 78213
- May 14Carrier 3.5-ton — 3.5-ton Carrier AC system installed· Castle Hills 78213
- May 6Goodman 3-ton — 3-ton Goodman AC system installed· Castle Hills 78213
Each entry is a real job completed by our team in the Castle Hills area.
What Your Neighbors Are Saying
Castle Hills neighborhoods we serve
Castle Hills AC repair — questions we get
How fast can you get to my AC in Castle Hills?
Same-day across Castle Hills — typically within 25 minutes from the time you call. We route by area, so once you book you'll usually get a tighter ETA within an hour. Mornings book first; on a hot afternoon emergency, call us directly (don't text) for the fastest answer.
What does AC repair cost in Castle Hills?
The diagnostic service call is free. The majority of Castle Hills repairs land between $185 and $895 — capacitors and contactors on the low end, fan motors and full refrigerant recharges higher up. Compressor replacements run $1,800–$3,400. You always get the written price before any work starts, and there's no surcharge for Castle Hills vs. inner San Antonio.
Which neighborhoods in Castle Hills do you cover?
All of them. We regularly run jobs across Castle Hills, NW Loop 410 area, West Avenue corridor, and the rest of 78213. If you're inside the 78213 ZIP, you're in our zone.
Do you fix AC units on weekends in Castle Hills?
Yes. Saturdays and Sundays are normal service days for us at no overtime markup. Sundays after 6 PM and holidays carry a small after-hours fee, which we'll quote before we roll.
What brands of AC do you service in Castle Hills?
All major brands — Carrier, Trane, Goodman, Lennox, Rheem, York, Ruud, Amana, American Standard, Bryant, Payne. Our trucks carry universal capacitors, contactors, motors, and R-410A so most Castle Hills repairs finish on the first visit.
My AC is blowing warm — what should I do before you arrive?
Flip the thermostat to OFF (not just up to a higher temp), wait 10 minutes, then switch back to COOL. Check that the outdoor unit is running and not iced over. If the indoor coil is frozen, leaving the system OFF with the FAN ON for an hour or two lets it thaw — we can diagnose faster on a thawed system. Then call us and we'll roll.
Find us serving Castle Hills
AC out in Castle Hills?
We'll have you cooling again today.
(210) 600-5091Need a new system instead? See AC replacement pricing in Castle Hills →