Furnace & heating
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
Castle Hills is a small, tree-lined enclave completely surrounded by San Antonio, and its homes were mostly built between the 1960s and 1980s. That matters for HVAC because those systems are older, often oversized, and paired with ductwork that was never designed for today’s high-efficiency equipment. We’re Brandt HVAC, and we handle AC repair, furnace repair, and AC maintenance for Castle Hills homeowners who want a written price before any work starts and a technician they can identify before they open the door. Call us at (361) 470-8872 any time, day or night.
Why Castle Hills Homes Are Different
Castle Hills has its own city government and its own building codes, even though it sits inside San Antonio’s boundaries. The housing stock is dominated by single-story ranch and traditional homes with brick veneer or stone exteriors, many on pier-and-beam foundations. Additions and renovations are common, which means a lot of these houses have patchwork duct systems: original runs mixed with newer sections, joints that have loosened over 40 or 50 years, and returns that were never resized after a room was added.
The climate here is hot and humid for most of the year, with cooling seasons that stretch from March into November. High dew points mean condensate lines clog more often than in drier parts of Texas, and mature oak trees – a signature of Castle Hills streets – drop heavy pollen and leaves in spring that choke outdoor condensers. We see nuisance high-pressure lockouts every April and May from exactly that. Homes on shaded lots run different humidity loads than homes in full sun, so a repair that works fine on one block may need a different approach two streets over.
Styles & brands we work with
Our Main Castle Hills Services
These are the three jobs Castle Hills homeowners call us about most, and each has its own detailed page with local pricing and what to expect.
AC Repair in Castle Hills
Most of the AC work here involves older systems and the strain of near-year-round cooling. The AC Repair in Castle Hills page covers what we see most: clogged condensate drains from high humidity, failed capacitors on aging compressors, and coils corroded by the area’s hard water. Castle Hills homes with original ductwork often have low airflow that gets misdiagnosed as a refrigerant problem. We walk through the actual symptoms, the repair, and the written guarantee before we touch anything.
Furnace Repair in Castle Hills
Castle Hills still has a surprising number of original 1960s-era gas furnaces tucked into hallway closets and utility rooms. They’re simple machines, but age brings real problems: cracked heat exchangers, failing gas valves, and thermocouples that wear out. Our Furnace Repair in Castle Hills page explains what a heat exchanger inspection actually involves and what common furnace repairs cost in this area. If a furnace has to run overnight during a January cold snap, you want it checked by someone who knows these older units.
AC Maintenance in Castle Hills
On shaded Castle Hills lots, condensers work less hard but stay wetter longer, which breeds mold and corrosion faster than on open suburban lots. The AC Maintenance in Castle Hills page covers our flat-price tune-up, which includes cleaning the condensate line, checking refrigerant pressures, testing capacitors, and a written report on what was actually found. Maintenance here pays for itself because a clogged drain or a weak capacitor caught in spring is a $150 fix, not a $650 emergency in August.
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
We work on every major residential brand, but the Castle Hills homes we visit most often run Goodman, Rheem, and York equipment. Those three brands show up constantly in 1960s-to-1980s installations, and our technicians carry the common repair parts for them in the truck. That means most repairs finish the same day. See our brands for the full list, including Daikin, Carrier, Trane, and Lennox.
Pricing for HVAC Company in Castle Hills, TX
| Service | Typical range in Castle Hills |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
Those are the ranges we quote across Castle Hills. What pushes a repair toward the top end here is usually the age of the system or the amount of rework in the ductwork. Older units mean more labor to access and more parts that have been discontinued. In every case, you get a written price before any work begins, and you sign off on that number before a tool comes out of the truck.
See the difference
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AfterNeighborhoods We Serve in Castle Hills
We work across all of Castle Hills, from the tree-shaded streets near the city center to the quieter pockets along the northern boundary. Response time for most calls is under two hours, and emergency calls are handled around the clock.
- Castle Hills proper, including the older parcels around the municipal center
- The loop streets along London, Jackson Keller, and Lockhill Selma
- Streets bordering the San Antonio Country Club area
- The residential blocks near Castle Hills Elementary and the parks
- Areas along the western edge, toward Vance Jackson Road
Service Area – Cities Near Castle Hills
Beyond Castle Hills, our licensed technicians also serve homeowners in San Antonio, TX, Schertz, TX, Cibolo, TX, and Boerne, TX. Each area has its own page with local pricing and what makes those homes different. If you’re unsure which area you fall under, call us and we’ll confirm dispatch coverage right away.
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
Most repair calls in Castle Hills get a technician on site within two hours. Emergency calls – no cooling in August or no heat during a freeze – are prioritized around the clock. A live person answers the phone 24/7, and you’ll know the name and photo of the technician who’s coming before they arrive. Call (361) 470-8872.
Castle Hills has its own building department and code enforcement, and some HVAC work does require a city permit – particularly equipment replacements and electrical or gas line changes. We handle the permit paperwork on jobs that require it. You’ll see the permit status on your written estimate before work starts.
Every repair comes with a written guarantee that spells out exactly what is covered and for how long under our 365-Day Done Right Promise. If the repair fails within that period, we return at no charge. You get the guarantee in writing before you agree to the work. No fine print, no argument.
Contact Brandt HVAC in Castle Hills
If your AC is struggling in a Castle Hills summer or your furnace won’t fire, call (361) 470-8872. A live person answers 24 hours a day, 7 days a week. You’ll get a written price before any work begins, and a technician sent to you by name and photo before every visit. Estimates are free.
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
"Frozen evaporator coil in July. Cleaned it, replaced a clogged filter, and checked the airflow. Gave me a simple schedule for filters."
- Hannah L."Maintenance plan is simple and the tech showed me the readings, not just said it was fine."
- Maribel C."Condenser fan motor replaced the same day. Clean, quick, and the quote didn't change."
- Lamar R.