Heat pumps
Furnace & heating
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 estimateCarrier Heat Pump Service: The San Antonio Owner’s Guide
Carrier heat pump service in San Antonio typically runs $150 – $650 depending on what failed, and most common repairs (capacitors, contactors, defrost boards, thermostats) are done the same day because our trucks carry Carrier-compatible parts specific to this market. You usually find out something’s wrong when the outdoor unit freezes on a mild evening, the house won’t heat in January, or the system runs but moves lukewarm air. We’re an independent service provider, not affiliated with Carrier, which means we stock compatible OEM and quality aftermarket parts across model lines rather than pushing a single brand flag.

Here’s the San Antonio-specific picture: our heat pumps work double duty, cooling for eight solid months and heating through the odd cold snaps we get. That runtime hammers specific components. Carrier builds their heat pumps well, but the capacitor, the contactor, and the defrost sensor take a beating in our humidity and occasional ice events. We see these fail at predictable intervals, and we stock for them accordingly.
Which Carrier Models This Applies To
Carrier splits their residential heat pump lines into three tiers you’ll see on the data plate: the Comfort series (model numbers starting with 25HCB, 25HBC), the Performance series (25HCE, 25HPB), and the Infinity series (25VNA, 25VNB). The data plate lives on the side or back of the outdoor unit and lists the exact model number and serial. Shoot us a photo of that plate when you call, and we’ll verify the right part match before we even put a truck in gear.
Here’s a compatibility gotcha most San Antonio homeowners never hear until they’ve bought the wrong part online: Carrier changed their capacitor specifications across series years. A Comfort series from 2012 takes a different capacitance rating than a 2018 build of the same line, even when the model numbers look nearly identical. We bring a range of OEM-spec parts on every Carrier call, and we verify against the actual unit, not the homeowner’s assumption. That matters because a mismatched capacitor will run the compressor wrong and shorten its life, and a wrong defrost board can leave your unit stuck in defrost on a 40-degree San Antonio night, pushing cold air through the vents while it tries to thaw ice that isn’t there.
On OEM versus aftermarket for Carrier specifically: OEM parts carry the Carrier part number and the same fitment guarantee, and they cost 20 – 40% more than quality aftermarket equivalents. For compressors and defrost boards, we recommend OEM every time. For capacitors and contactors, top-tier aftermarket brands (Amrad, Mars, Supco) are made in the same factories to the same tolerances and often carry a better warranty than Carrier’s own generic replacement. We’ll give you both prices and let you pick, with our honest recommendation for your specific unit.
Styles & brands we work with






Signs Your Carrier Heat Pump Service Is Failing
- Outdoor unit running but no warm or cool air inside. This is usually the compressor not engaging, which points to a failed capacitor or contactor. The fan spins, the unit hums, but the compressor never kicks on. A capacitor replacement gets it running again, usually within the hour.
- Frost or solid ice coating the outdoor coil in mild weather. A heat pump will frost lightly in normal operation, but a full ice block means the defrost cycle has failed. That’s typically the defrost control board or the defrost thermostat, both replaceable same-day. Left unchecked, it can damage the coil and, eventually, the compressor itself.
- System short-cycling: turning on and off every few minutes. This is frequently a failing thermostat or a pressure switch tripping intermittently. Short-cycling puts extra stress on every component and doubles your energy use while delivering half the comfort. It’s also one of the fastest ways to finish off an aging compressor.
- Odd sounds when the unit starts: buzzing, clicking, or a hard thunk. A buzzing that lasts several seconds is often the capacitor struggling to deliver the start-up jolt the compressor needs. A hard thunk can mean the reversing valve is seizing. The reversing valve is what flips your Carrier between heating and cooling mode, and when it goes, your system may heat when you want cooling.
- Warm air in cooling mode or cold air in heating mode with the unit running constantly. This can be a failing reversing valve, a refrigerant restriction, or even a thermostat that’s lost its programming. Carrier heat pumps have a diagnostic LED on the outdoor control board that flashes a code. We read that code on-site and give you the fixed answer, not a guess.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For a Carrier heat pump in San Antonio, here’s the straight pricing picture. A run capacitor replacement runs $150 – $300. A contactor swap lands at $180 – $350. A defrost board is $250 – $500 installed. A reversing valve, which is a bigger job involving refrigerant recovery, runs $500 – $650. Compressor replacement on a Carrier heat pump starts around $1,800 and often points toward a new system conversation depending on age and condition. These ranges include the part, the labor, and the trip charge, and we quote them in writing before we start. You see the number, you agree to it, then we work. No surprises after the fact.
Every Carrier heat pump repair we do in San Antonio carries a written guarantee. The repair is guaranteed for 365 days. If it fails within that year, under our 365-Day Done Right Promise, we come back and make it right at no charge. That’s not a pro-rated warranty. There’s no service fee on the return visit, no argument, no fine print. If it’s not done right, we make it right, on our dime.

DIY or Call Us?
You can safely check a few things before you pick up the phone. Confirm the thermostat is set correctly and has fresh batteries. Check the breakers and the outdoor disconnect switch. Look at the air filter, because a clogged filter restricts airflow and can trigger a freeze-up that looks like a mechanical failure. Those checks don’t require tools and won’t hurt you or the unit.
What you should not do is open the outdoor unit’s service panel and go poking around. The capacitor stores a charge even with the power off, enough to put you on your back. The electrical connections inside a Carrier heat pump are high-voltage, and the compressor terminals carry enough current to be lethal. We say this without drama because we’ve seen the scars. If the simple checks don’t solve it, call (361) 470-8872. We’ll verify what’s failed, quote you a fixed price, and get it done. Tell me what’s wrong, I’ll tell you what it costs, and we’ll get your house back to livable.
FAQs
A well-maintained Carrier heat pump in San Antonio typically lasts 12 – 15 years, though our climate’s long cooling season and occasional ice events mean components like capacitors and contactors usually need replacement every 5 – 7 years. Regular maintenance is the difference between a 12-year system and one that dies at 9. Call (361) 470-8872 to schedule a tune-up, and we’ll tell you honestly what condition your Carrier is in.
For most Carrier heat pump components, replacement is the repair. Capacitors, contactors, defrost boards, and thermostats are sealed units that can’t be rebuilt; they get swapped for new parts. The only component sometimes repairable is a refrigerant leak, which can be sealed if the leak is in an accessible location and the system is otherwise sound. We’ll always give you the repair versus replace math in plain dollars before any work starts.
Most common Carrier heat pump repairs in San Antonio, such as a capacitor, contactor, or defrost board replacement, are done in under two hours from our arrival. Reversing valve replacement takes longer, typically 3 – 4 hours, because it requires recovering and recharging refrigerant. We’ll give you an honest time window when you call, and we stick to it.
Yes, our San Antonio trucks carry the most commonly failed Carrier heat pump parts: capacitors across multiple ratings, contactors, defrost boards for the Comfort and Performance series, and a range of thermostats. We also stock compatible parts for Trane and Lennox systems. If your part is outside what we carry, we source it same-day from local distributors in San Antonio and have you back running quickly.
If your Carrier heat pump is acting up, call us at (361) 470-8872. A real person answers, 24 hours a day. We’ll ask a few questions, give you a straight answer on cost, and send a technician you’ll know by name and photo before they arrive. Free estimates, written pricing, and a one-year guarantee on every repair. That’s how we work in San Antonio.
Written by Devin Marlowe, Owner, Brandt HVAC Co San Antonio at Brandt HVAC Co San Antonio, serving San Antonio and nearby areas.