How much does an air conditioner repair cost in Houston? It depends almost entirely on which part failed. A small electrical part that starts the motors is usually a modest bill. A compressor or an evaporator coil can cost more than many people pay for a used car. This guide lays out published ranges for the common repairs, explains what pushes a Houston bill up or down, and shows you what a fair quote looks like.
First, the honest part. Houston Air & Heating does not fix air conditioners and does not set prices. It is a no-cost phone service that passes your call to an independent local HVAC company, which inspects your system and names its own price. Every figure on this page comes from a named, published source. None of them is the line's price, and real Houston quotes vary with the house, the system and the day.
Published repair cost ranges
Cost guides build their numbers from contractor surveys and project data, so two guides rarely agree to the dollar. That is useful, not a problem: when two sources land in roughly the same place, you have a fair sense of the range. The table puts Angi's Houston estimates next to This Old House's national figures. Both include parts and labor.
| Repair | Angi, Houston estimate | This Old House, national |
|---|---|---|
| Capacitor (starts the compressor and fan motors) | $200 to $450 | $150 to $400 |
| Contactor or relay (the outdoor unit's on switch) | Not listed | $100 to $450 |
| Thermostat | $280 to $650 | $100 to $500 |
| Condensate drain line cleaning | Not listed | $80 to $250 |
| Drain pan replacement | Not listed | $200 to $800 |
| Refrigerant recharge | $420 to $760 | Not listed |
| Refrigerant leak repair | $250 to $1,600 (Angi national) | $200 to $1,500 and up |
| Fan motor | Not listed | $300 to $800 |
| Circuit board | Not listed | $200 to $800 |
| Evaporator coil | $1,350 to $2,600 (coil replacement) | $700 to $2,500 and up |
| Compressor | $900 to $3,200 | $1,000 to $3,000 and up |
For the whole job rather than one part, Angi's 2026 Houston page gives an average HVAC repair of about $345, with a range of $128 to $1,972. Angi's furnace page for Houston shows a similar picture for heating: an average of $323, with most calls between $117 and $572.
These are not this line's prices. The line never quotes or bills anything. The ranges above are published estimates from the sources named, listed at the bottom of this page. The company you are put through to sets its own price after it sees your system, and your quote may be higher or lower.
Why the low end and the high end are so far apart
Two homes can have the same symptom and very different bills. Warm air from the vents might come from a failed capacitor, which is a small part and a short visit. It might also come from a refrigerant leak in the indoor coil, which means finding the leak, replacing the coil, pulling a vacuum and recharging. The symptom does not tell you the price. The diagnosis does.
That is why a careful technician tests before quoting, and why a price given over the phone, before anyone has looked, deserves caution in both directions.
What pushes a Houston repair bill up or down
The part is the biggest factor, but it is not the only one. These are the line items worth asking about before the work starts.
The diagnostic or trip fee
Most companies charge to send someone out and run tests. Ask the amount before the visit, and ask if it comes off the repair bill when you hire them for the fix. Angi notes that many companies apply it that way.
Nights, weekends and holidays
After-hours work usually costs more. Angi's Houston guide says emergency calls can add 50 to 100 percent to hourly rates. If the house is safe and the problem can wait for morning, ask what the difference would be.
Where the equipment sits
Many Houston homes have the indoor unit in the attic. A cramped attic with no walkway, or an air handler over a finished ceiling, takes longer to work in safely, and in summer the heat up there slows everything down. More time means more labor.
Refrigerant type and amount
Refrigerant is priced by the pound. Angi's refrigerant guides list R-410A at about $40 to $75 a pound and the older R-22 at about $90 to $250, because new R-22 production and imports ended in 2020. A bigger system holds more pounds.
Warranty status
If the part is still under the manufacturer's warranty, you may pay only for labor. Find your installation paperwork or the model and serial numbers before the visit, and ask the company to check coverage.
Size and age of the system
Larger systems use larger, pricier parts. Older units can need parts that are harder to find, and an aging system may need more than one fix in the same visit.
How to read an AC repair quote
A good quote lets you see exactly what you are paying for. Texas rules for air conditioning contractors also require the company's license number on its proposals and invoices, which gives you a quick first check. Before you sign, look for each of these:
- The failed part, named. "Repair outdoor unit" is not enough. "Replace 45/5 microfarad dual run capacitor" is.
- How they confirmed it. A reading, a test result or a photo. Ask to see the old part afterward.
- Labor, separately or as a flat job. Either is normal. You just want to know which.
- Refrigerant type and pounds. If refrigerant is on the bill, the quote should say which kind, how many pounds, and whether a leak search is included.
- The diagnostic fee and any credit. Shown on paper, not just mentioned.
- Warranty on the part and on the labor. How long each lasts, in writing.
- The license number. Then check it yourself on the state license search.
Verify the license before work begins. Texas requires anyone contracting to do air conditioning, refrigeration or heating work to hold an Air Conditioning and Refrigeration (ACR) Contractor license from the Texas Department of Licensing and Regulation (TDLR). Ask the company for its ACR license number, then confirm it on the TDLR license search (opens in a new tab). The line does not check this for you.
A note on refrigerant leaks
An air conditioner does not use up refrigerant the way a car burns gas. If the charge is low, it went somewhere, and the Department of Energy is clear that adding more without fixing the leak is not a real repair. A recharge with no leak search looks cheaper on the day and costs more over a summer, because you pay for the same pounds again when they escape.
Ask where the leak is, how it was found, and what fixing it costs compared with replacing the leaking part. If the system still runs on R-22, ask about replacement too. That refrigerant now comes only from recovered and stockpiled supply, which is why recharging an R-22 system has become so costly.
What HVAC technicians earn, and why the bill is higher
People often ask how much HVAC guys charge per hour. Two different numbers get mixed up here. The Bureau of Labor Statistics reports that heating, air conditioning and refrigeration mechanics and installers earned a median of $29.33 an hour, or $61,010 a year, in May 2025. That is what the worker is paid, not what you are charged.
A company's labor rate has to cover the technician's pay plus the vehicle, fuel, tools, insurance, training, licensing, office staff and the hours spent driving between jobs. Angi's Houston guide puts billed repair labor at roughly $75 to $150 an hour. Many companies skip the hourly rate and quote each repair as a flat price.
Furnace and heating repair costs
Heating repairs follow the same pattern as cooling. Across Houston you will find gas furnaces tucked into attics and closets, plus plenty of heat pumps and electric heat strips inside air handlers. Angi's Houston furnace estimate averages $323 for a typical call. Common heating fixes include a dirty flame sensor, a failed igniter, a bad blower motor or a control board. A gas furnace has parts electric heat does not, such as the igniter, flame sensor and gas valve, so its repair list is longer.
If a technician mentions a cracked heat exchanger, that is a safety issue, not just a cost line, because it can let combustion gases into the air you breathe. Ask to see the evidence and read the repair or replace guide before deciding. Should the CO alarm sound at any point, nobody stays inside: get out first, then dial 911. For heating trouble, the furnace repair and heating repair pages explain what the visit involves.
Ways to keep AC repair affordable in Houston
Affordable AC repair in Houston is less about finding a low number and more about not paying for the same problem twice. A few habits help:
- Do the safe checks first. A thermostat set to the wrong mode, dead thermostat batteries, a clogged filter or a tripped breaker can each look like a broken system. The AC not cooling guide walks through them.
- Change the filter on schedule. According to the Department of Energy, replacing a clogged filter lowers the energy an AC uses by 5 to 15 percent, and steady airflow keeps the coil from icing.
- Call during business hours when you safely can. If no one in the house is at risk from the heat, a morning visit can avoid an after-hours premium.
- Ask for the repair price before agreeing to anything bigger. If replacement is suggested, ask for both prices in writing.
- Keep up with seasonal checkups. ENERGY STAR recommends having the cooling side looked at each spring and the heating side each fall. A tune-up catches a weak capacitor or a slow drain before it fails in August.
When a repair stops making sense
A $300 repair on a seven-year-old system is an easy yes. A $2,500 compressor on a system that is 16 years old and still on R-22 is a different decision. If a quote lands near the top of the ranges above, or if this is the second big repair in two summers, read whether to repair or replace and ask the company to price both options. If you want a sense of what a new system involves, the AC installation page covers that.
Want a real number for your system? Call the line, describe what the AC or furnace is doing, and you will be put through to a local company that can diagnose it and give you its own written price.
- Dial the numberAn automated assistant picks up (832) 662-4107 at any hour and asks what you need help with.
- Say what is wrongTell it whether the trouble is cooling or heating, where in the Houston area you are, and what the system is doing.
- Reach a local companyYour call is transferred to an independent, locally owned HVAC company, which gets a short summary of your problem before it answers.
- Work it out with themThat company inspects, quotes, repairs and bills you directly. If nobody can pick up, your name, number and problem are passed on for a call back.
About this line: Houston Air & Heating is a free phone line, not an HVAC contractor. It answers your call and connects you with an independent local heating and air conditioning company, which inspects, quotes and does the work, and which you pay directly. Companies may pay a referral fee. You never pay the line. Read how the line works.