Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateHVAC Company in Castle Hills, TX
Meadowsweet Heating & Air is the HVAC company Castle Hills homeowners call when a condenser quits on a 100°F afternoon or a furnace closet needs a retrofit that off-the-shelf parts won’t fit. Castle Hills jobs are different: the original 1950s and 60s custom homes have tight mechanical closets, shallow attic clearances, and round metal ductwork that most bigger-city crews never see. We send background-checked, uniformed technicians who know these houses, carry custom transition fittings on the truck, and put a written price in your hand before any work starts. Call (254) 271-2545 and a live person answers, day or night.
Why Castle Hills Homes Are Different
Castle Hills sits in South Texas, where long, humid summers and frequent 100°F days push aging condensers past their limits. High humidity means drain pan and coil maintenance isn’t optional here – a slow-draining pan becomes a mold problem fast. The housing stock makes things more particular: predominantly single-story ranch and mid-century custom homes built from the 1950s through the 1970s, many on pier-and-beam foundations with limited attic space and original closets designed for furnace-only systems that were never meant to hold a modern air handler.
The tight mechanical closets in Castle Hills mean retrofits almost always require creative ducting or a high-velocity system. In many of these homes, the original round metal ductwork is still tucked into crawlspaces, and off-the-shelf rectangular plenums simply won’t fit. Our technicians keep custom transition fittings stocked for exactly this reason. When a crew understands that a Castle Hills house has its own geometry, the difference shows up in quieter airflow, a cleaner install, and a system that actually fits the space it lives in.
Styles & brands we work with







Our Main Castle Hills Services
Castle Hills homeowners call us most often for three things: getting a struggling AC cooling again in the summer heat, getting a furnace safely running when a rare cold snap hits, and replacing an old system with something that fits a mid-century home’s cramped closet or shallow attic. Here’s how each one works in Castle Hills.
AC Repair in Castle Hills
When a Castle Hills AC stops cooling in July, the call usually comes in the afternoon, after the house has already started to warm up. We diagnose the whole system, not just the symptom: a failing run capacitor, a clogged condensate line, a dirty condenser coil on the side of the house, or refrigerant that’s leaked low. Because Castle Hills humidity is so high, we pay close attention to the drain pan and coil condition – that’s where mold starts when airflow isn’t right. Most repairs are completed the same day. See our full AC Repair in Castle Hills page for pricing and what to check before you call.

Furnace Repair in Castle Hills
Castle Hills furnaces are often original to the home, tucked into a closet that was sized for equipment from the 1960s. When a furnace won’t light, short-cycles, or blows cold air, the issue is typically an igniter, flame sensor, gas valve, or a blower motor worn out from years of South Texas dust. We carry parts for the brands most common in Castle Hills and test the full safety sequence before we leave. Gas appliances deserve a careful hand – we never rush a furnace repair. Details are on our Furnace Repair in Castle Hills page.

AC Installation in Castle Hills
Replacing an AC in Castle Hills is rarely a simple swap. The original closet or attic space often can’t hold a modern air handler without modification, and the old round ductwork may need custom transition fittings rather than the rectangular plenums most supply houses stock. We plan the install around the home’s actual layout, size the equipment to the house – not to what was there before – and give you a written, fixed price before any equipment is ordered. This is a scheduled job, not a same-day one. See AC Installation in Castle Hills for the full process and cost ranges.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Castle Hills
Our technicians are trained to service equipment from nine major brands, including Goodman, Rheem, York, and Daikin. We stock common parts locally so most Castle Hills repairs don’t wait on a warehouse shipment. See our brands page for the full list and what we keep on the truck.
See the difference
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AfterPricing for HVAC Company in Castle Hills, TX
Here are the typical price ranges Castle Hills homeowners can expect for common HVAC work. These are the same ranges we use across the site, so you can plan before you call.
| Service | Typical range in Castle Hills |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
What pushes a Castle Hills repair toward the top of the range is usually access: a condenser squeezed into a tight side yard, a furnace closet that’s hard to reach, or old ductwork that needs custom fittings. That’s why we give you a written price before any work starts – always included, never a surprise. You’ll know the number and approve it first.
Neighborhoods We Serve in Castle Hills
We work throughout Castle Hills, from the tree-lined streets near the golf course to the quieter cul-de-sacs on the north side. Our technicians know the difference between a 1950s ranch on a pier-and-beam foundation and a later custom build with a different duct layout.
- The Enclave
- Castle Hills West
- Oak Hills
- Castle Hills Forest
- Kings Castle
For most Castle Hills calls, we can have a technician at your door within a few hours. Emergency calls in extreme heat or cold are prioritized because a failed system in this climate is a real safety concern, not just a comfort issue.
Service Area – Cities Near Castle Hills
Meadowsweet Heating & Air works throughout the Castle Hills area and the surrounding communities. If you’re in San Antonio, TX, New Braunfels, TX, Converse, TX, or Live Oak, TX, we can help there too. Scheduling is coordinated from our Dallas-Fort Worth office, and crews serve each of these cities locally.
Serving Castle Hills, TX - Our Local Coverage Area
We’re based in the Castle Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Castle Hills
Typically within a few hours. Castle Hills is a compact city, and our crews are dispatched from nearby, so response times are short. In extreme heat we prioritize no-cooling calls because a failed AC in a South Texas summer is a health risk, especially for kids, elderly residents, and pets. Call (254) 271-2545 and a live person will give you a straight answer on timing.
Most HVAC repairs and replacements in Castle Hills require a permit, and the requirements vary by project scope. We handle the permitting paperwork as part of the job, so you don’t have to figure out city forms on your own. The written price we give you before work starts includes any permit fees. Ask us about your specific project when you call.
Yes. We schedule service windows that respect your household’s routine, whether that means arriving after school drop-off or finishing before a toddler’s nap. Our technicians follow the C.A.R.E. values code: they clean up like it’s their own home, ask before moving anything, and keep noise to a minimum during quiet hours. Shoe covers and drop cloths go down before any work begins, and we send a photo of the clean-up before the crew leaves. That’s included on every job, not an upsell.
If your Castle Hills home needs an HVAC repair, a replacement, or just an honest tune-up, call (254) 271-2545 for a free estimate. A live person answers 24 hours a day, 7 days a week – no voicemail queue, no runaround. We’ll give you a written price before any work starts, and every job is backed by the 365-Day Done Right Promise.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Castle Hills Customers Say
"Replaced a failing capacitor and cleaned the unit. What I noticed was how respectful he was of the house and how spotless he left the utility closet. Fair price too."
- Tomas Rivera"Good repair. It needed a second visit because the part wasn't on the truck, which was a little inconvenient. Both times the tech was careful and clean and kind though."
- Chad Boone"New AC install. The crew protected the hallway floors the whole way to the attic and vacuumed up after. They worked quietly around my son's online classes without me even asking."
- Everett Hsu