Mini Split & Ductless AC Repair in Houston
Mini split & ductless AC repair in Houston — error codes, water leaks, communication faults, refrigerant. Mitsubishi, Daikin, Fujitsu, LG. Call now.
Calls answered 7:00 AM – 9:00 PM CT, 7 days a week
Quick answer: Mini splits fail differently from central systems — error codes instead of warm air, water down the wall instead of a puddle under the air handler. Most repairs run $150–$700 and are finished in one visit. Call +1 (254) 256-1678 with your brand and the error code if one is showing.
Signs your mini split needs repair
- An error code on the display or a blinking operation light
- Water dripping or staining the wall under the indoor head
- The indoor unit runs but blows room-temperature air
- The outdoor unit never starts, or starts and stops constantly
- Musty smell when the unit runs — mold on the blower wheel and coil
- The remote or app no longer controls the unit reliably
- Ice on the indoor coil or the refrigerant lines
The repairs we see most on Houston mini splits
Condensate drainage
Houston humidity means a mini split head can pull liters of water a day out of the air. The thin drain line clogs with algae, or the condensate pump in a basement-style install fails — and the water comes down your interior wall. This is the single most common ductless call we see from June through September.
Communication and control faults
The indoor and outdoor units talk constantly over a low-voltage cable. Rodent damage in attics and walls, corroded connections, and failed control boards break that link and throw communication error codes. Houston's power surges during storm season are a frequent root cause of board failures.
Refrigerant leaks at flare connections
Mini splits connect the line set with hand-torqued flare fittings — the weakest point of any installation. Improperly torqued flares from a rushed install leak slowly for years. Repair means remaking or re-torquing the flare, pressure testing, and recharging by weight.
A word on window units
If you landed here looking for window AC repair: we will give you an honest answer on the phone. Sealed-system repairs on window units rarely make financial sense once the unit is out of warranty, and we would rather tell you that than bill you for a diagnosis on a $250 appliance. For garages, additions and rooms that never cool properly, a ductless mini split is usually the upgrade that actually solves the problem — and we can quote both directions.
What mini split repair costs in Houston
| Repair | Typical Houston range | Note |
|---|---|---|
| Diagnostic / service call fee | $75–$200 | Often credited toward the repair |
| Condensate drain line clearing | $75–$250 | |
| Blower motor replacement (PSC) | $300–$900 | |
| Refrigerant leak detection | $150–$500 | |
| R-410A refrigerant recharge (per lb) | $50–$90 | |
| Control board replacement | $300–$900 |
Ranges aggregated from HomeGuide, Angi and HomeAdvisor cost guides and Houston-area contractor pricing pages, collected October 2026.
Exact price only after diagnosis — call +1 (254) 256-1678. Full list on the Houston AC repair cost page.
Frequently asked questions
Why is my mini split blinking an error code?
The blinking pattern or code on the display points to a specific fault — communication errors between the indoor and outdoor units, thermistor failures, refrigerant issues and drainage faults are the most common. Write down the code or count the blinks before you call; it tells the technician which direction to diagnose and often which parts to bring.
Why is my mini split dripping water inside?
Almost always a clogged condensate drain line or a failed condensate pump. Mini splits mounted high on the wall rely on a thin drain tube, and Houston humidity means they move a lot of water — algae clogs the line, and the water has nowhere to go but down your wall. Turn the unit off and call; continuing to run it damages the wall and the electronics.
Can a mini split be repaired, or is replacement cheaper?
Most mini split repairs are worth making: control boards, fan motors, thermistors and drain fixes run $150–$700. The exceptions are compressor failure on an out-of-warranty unit and refrigerant leaks in the flare connections of a poorly installed system — at that point, especially on a budget brand, replacement can be the smarter money.
Do you repair window AC units?
Honestly: in most cases a window unit under about 8 years old is cheaper to replace than to repair professionally, because the labor for a sealed-system repair exceeds the price of a new unit. Call and describe the problem — if it is a simple fix we will say so, and if replacement makes more sense we will tell you that too.
Which mini split brands do you service?
Partner technicians service the major ductless brands installed in Houston homes: Mitsubishi, Daikin, Fujitsu, LG, Gree, MrCool and Pioneer. Parts availability is best for Mitsubishi, Daikin and Fujitsu; budget brands sometimes mean longer part lead times.
Need AC repair today?
Call now and we will connect you with a licensed Houston HVAC technician. Exact pricing is confirmed after on-site diagnosis — no surprises.