usually low refrigerant from a line-set leak or a struggling inverter compressor.
Ductless Mini-Split Repair for the Zone That Quit One Warm Room Back, Not a Whole New System
In San Antonio, Serving Alamo Heights, Terrell Hills, Olmos Park, Stone Oak, Castle Hills & the Greater San Antonio Area, TX
- Fix the zone first
- $119 diagnostic, credited
- Every mini-split brand
· Google reviews
Licensed · TACLB 110532E
Why One Mini-Split Zone Quits
One head blows warm in the converted garage while the rest of the house stays comfortable, so you know it isn't the whole system, just the one zone. We're Alamo Comfort Heating & Air Conditioning, a family-owned San Antonio HVAC contractor that has repaired ductless systems across the area since 2014. Because a mini-split cools zone by zone, we diagnose it the same way: our technician isolates the failed head, control board, drain, or line set, shows you the part behind the problem, and prices the fix for a flat $119 credited to the repair. Our technicians work for a paycheck, not a commission, so the repair you get is the one your system needs.
1 zone down, not the whole systemMost ductless faults trace to a single head or its line set, and that is exactly what we repair.
$119 flat diagnosticA full check of the head, control board, drain line, and refrigerant charge, credited to your repair once approved.
1 to 2 repairs a weekon mini-splits another company told a homeowner to replace. Often one part failed, not the system.
Up to a 10-year labor warrantyOn systems we installed, ductless repair labor is covered, parts included.
On the job
01 / Warning signs
When Your Ductless System Needs Repair
A mini-split usually warns you before a zone quits for good. Catch it early in our long cooling season and the fix stays small; wait, and one failing head can leave a whole room unusable through a 100-degree week. Here's what tells you it's time to call.
almost always a clogged condensate drain backing up in our humid San Antonio summers.
a fault the control board caught before the unit could run on and cause damage.
which points to an airflow restriction or a refrigerant problem that worsens the longer it runs.
often a dead head, a wiring fault, or trouble in that single zone's line set.
signs of a failing compressor, a loose part, or a control board on its way out.
Caught it while it's still one warm room? That's the smaller repair. Call before a single failing zone sits through a heat wave and turns into a bigger fix. If your mini-split is well past its years and the repairs keep stacking up, we'll put the honest math for a replacement right next to the repair, but only when the numbers actually point there. Financing can spread a larger repair over time, and if you're already holding another company's "replace it all" quote, bring it by for a straight second opinion.
02 / Mini-split repair pricing in San Antonio
How Much Does Mini-Split Repair Cost?
Every ductless repair starts with a flat $119 diagnostic, and that fee comes off your total the moment you approve the work. We won't throw out a number before we know the cause, because guessing is how a homeowner ends up overcharged. Once our technician isolates the fault, whether it's a clogged drain or a failed inverter board, you get a written price to approve, with nothing added at the end. From there, the cost depends on the part, the labor, and the condition of the system. If a repair genuinely stops making sense on an aging unit, we'll price a replacement right beside it, and financing is available for qualified customers, subject to approval.
Repair the Zone or Replace the System?
Let the Numbers Make the Call
We don't turn a service call into a sales pitch, because nobody here earns more for selling you new equipment. On a newer mini-split with one failed part, a repair is almost always the right call. On an aging system facing a big-ticket fix, we lay both paths side by side and let the numbers decide, never a default upsell.
| A repair usually makes sense when | Replacement is worth pricing when |
|---|---|
| The system is under about 10 years old | The system is 12 to 15+ years old |
| One head or a single part failed | The inverter compressor fails out of warranty |
| The fix is a small share of a new system's cost | Repairs keep stacking up across multiple zones |
| Refrigerant is current and parts are easy to source | It runs on a phased-out refrigerant that's costly to get |
Four steps
How We Get Your Zone Cooling Again
Four steps, the same order on every call, from your first ring to a zone holding temperature again.
Call Us and Get Scheduled
Tell us what the head or zone is doing, and we'll lock in the visit. Someone answers day or night, and we move fast on urgent no-cool calls, evenings and weekends included.
A Full Diagnosis, Zone by Zone
For a flat $119, our AC technician isolates the failed zone and checks the head, control board, drain line, and refrigerant charge, then shows you the fault, not a vague guess.
A Written Price, Then Your Go-Ahead
You see the part and labor in writing, with a straight recommendation, and nothing starts until you approve it. The $119 comes off the repair the moment you go ahead.
Repaired and Tested Before We Leave
Most repairs wrap in the same visit. We run the zone through cooling, and heating too if it's a heat-and-cool head, confirm it holds temperature, and walk you through what we did.
Why the Right Tech Matters for Ductless
The Diagnosis Is the Whole Job
Fix the zone first
We isolate the zone, we don't condemn the system.
A mini-split fails zone by zone, so we diagnose it zone by zone. Our technician finds the one head, board, or line set behind the problem, shows you what failed, and repairs that. A single warm room rarely means the whole system is finished, and we won't pretend it does.
No commission, so the fix is the fix you need.
Every technician here earns the same whether they repair your mini-split or replace it, so nobody is paid to talk you into new equipment. That's why "fair pricing" and "no upcharging" show up in our reviews without us asking, and why homeowners call us back for the next repair.
We know the parts a mini-split hides.
A ductless system runs on an inverter-driven compressor, a control board, and sensors a general AC technician can misread. Our AC technicians diagnose the whole zone, so a clogged condensate drain never gets misdiagnosed as a failed compressor, and you never pay to replace a part that was working fine.
Zone Down? Here's Your First Move
A Person Picks Up, Day or Night
Call (210) 202-0255, and a person picks up, days, nights, and weekends. We can't promise a truck at 2 a.m., and we won't pretend to. What we do is take your details, tell you straight what's likely wrong with the zone, and get your ductless mini-split repair scheduled fast across San Antonio.
Our phone works nights, our trucks keep honest hoursCall after hours and your no-cool zone moves up the schedule, so you're near the front when the workday starts. We move quickly on urgent calls. We just won't promise an exact arrival hour we can't keep.
One team, every mini-split brandWhatever ductless system is on your wall, one San Antonio team handles it start to finish. Save our number now, because the day a zone quits in July is not the day to start shopping for who fixes it.
Rusty HoermannOwner, Alamo Comfort
Rather talk it through now? Call (210) 202-0255
Service area
Where We Repair Mini-Splits Around San Antonio
Our home base is San Antonio, and we repair ductless systems right across the Greater San Antonio Area with the same technicians, the same process, and the same written pricing on every call. The North-side neighborhoods are the heart of our service area, and we reach the surrounding suburbs and towns from there.
Not sure your street is covered? Give us a call and we'll confirm coverage in about 30 seconds.
Alamo Comfort
Based in San Antonio · serving all of Bexar County
Get directions
Licensed & insured · TACLB 110532E
On the road
Alamo Comfort
10448 Gulfdale, Suite 3, San Antonio, TX 78216
Areas we serve
Ask if we cover your street
Alamo HeightsTerrell HillsOlmos ParkStone OakCastle HillsNorthwoodFar West SideSchertzGarden RidgeConverseNew Braunfels
Our neighbors say the same thing
What Homeowners Say After We Fix It
Alamo Comfort Heating & Air Conditioning holds a -star average across Google reviews. On ductless repairs, homeowners most often note that we pinpointed the failed zone, priced the fix before starting, and got a warm room comfortable again without selling them a whole new system.
03 / Ductless repair questions
Ductless Mini-Split Repair FAQs
Got one we didn't cover?
Call and askDo you charge to diagnose a ductless mini-split?
Yes. A flat $119 diagnostic covers a full check of the head, control board, drain, and refrigerant charge, and it's credited toward the repair once you approve the work.
One zone is warm while the others cool fine, why?
That points to a problem in that single zone: a dead head, a wiring fault, or a line-set leak, not the whole system. We test each zone to isolate the fault before quoting a fix.
My mini-split is dripping water inside, is that urgent?
It's usually a clogged condensate drain, common in our humid summers. Shut the zone off to stop the dripping and call us, and we'll clear the line and check the pan and safety switch.
Do you repair every brand of ductless mini-split?
Yes. We service every major make and model of indoor head and outdoor unit, whatever's on your wall. A correct diagnosis matters far more than the badge on the equipment.
Can you come out after hours for a mini-split repair?
Someone answers our phone day and night, including weekends, and we move fast on urgent no-cool calls. We'll be honest about timing, but we won't promise a specific arrival hour.
When is it smarter to replace a mini-split than repair it?
When an aging system keeps stacking up repairs or the inverter compressor fails out of warranty, replacement can be the better money. We'll show you the honest math before you decide.