AC Repair in Houston - On-Site Today, Diagnosis First

Trusted AC Repair for Houston Homeowners

When your air conditioner dies on a July afternoon in Houston, the indoor temperature climbs fast. Most AC repairs in Houston run between $150 and $650 depending on what failed, and if you’re wondering how much AC Repair costs, a sharp technician can usually pinpoint the problem within the first hour. Dalton Heating & Air Houston has been repairing residential cooling systems under The Garrison Standard since 2003, with live phone support around the clock and same-day availability for most calls. You get the diagnosis, the written price, and the repair done by a background-checked, uniformed technician who shows up inside the stated window. If you need someone out today, call (903) 494-7686 and a real person answers, no voicemail queue.

Call (903) 494-7686

We service the full Houston metro: Spring, Humble, Friendswood, Rosenberg, Stafford, Fresno, Pecan Grove, Seabrook, Sienna Plantation, and the neighborhoods in between, including AC Repair - Galena Park. On this page you’ll find realistic dollar figures, what each common repair actually involves, and the exact guarantee terms we put in writing on every job. It’s the same information Marco Benitez, our lead technician and owner, gives homeowners on the phone before anyone rolls a truck.

Key Takeaways:

• AC repair in Houston typically costs $150 – $650, with the final number set in writing before any work begins
• Every repair carries a 365-Day Done Right Promise with a free return visit if the fix fails
• Dalton Heating & Air Houston services all nine major residential HVAC brands, including Carrier, Trane, Lennox, and Goodman
• Live phone support is staffed 24/7 at (903) 494-7686
• Same-day service is available across most of the Houston metro when you call before noon

How Much Does AC Repair Cost in Houston?

AC Maintenance

AC Maintenance is the scheduled inspection and tune-up that keeps your system from failing during a Houston heat wave, and it typically costs $80 to $200 per visit. You need it once a year, ideally in March or April before the real heat settles in, or twice a year if your system runs nearly year-round, and you can follow our AC Repair Maintenance Checklist for Houston Homeowners to stay on track. Dalton Heating & Air Houston sends a factory-trained technician who checks refrigerant levels, tests capacitors and contactors, cleans the condenser coil, inspects the drain line, and measures airflow and temperature drop across the evaporator coil. At the end, you get a written report showing exactly what was tested, what passed, and what is starting to wear.

What Gets Checked

We test the components that fail most often in Houston’s climate: capacitors, contactors, and condensate drains. Humidity breeds algae in drain lines faster here than in drier cities, so we flush the line on every maintenance visit. We also check the refrigerant charge, because a system that is even 10% low runs longer cycles and drives up your electric bill.

When to Schedule It

Book maintenance before the first sustained 90-degree stretch, which in Houston usually means March through early May. If you skipped it last year, schedule it now; a tune-up catches small problems before they become a $400 capacitor or a dead compressor in August. Dalton technicians are paid a flat rate, not commission on what they sell, so the report you get is what the system actually needs.

AC Service

AC Service covers the full range of residential cooling work: diagnostics, repairs, maintenance, and system checks, with most service calls in Houston running $150 to $650 once the problem is identified. You need it when your AC makes noise, short cycles, runs constantly without cooling, or trips a breaker, basically anything that is not normal operation. Dalton Heating & Air Houston treats every service call the same way: arrive inside the stated window, diagnose the issue, put the price in writing, and do the work by the book. That is The Garrison Code, and it has been our operating rule since 2003.

Tune-Up and Inspection

A service visit often starts with a full system inspection, which is the $80 to $200 tune-up price range. We measure the temperature split between supply and return air, check amp draw on the compressor and fan motor, and test every safety control. What we find dictates what happens next, and you approve the written price before we touch a single part.

Repair Work

When a component has failed, the repair falls between $150 and $650 depending on the part. We carry common capacitors, contactors, fan motors, and thermostats on the truck, so many repairs are completed the same visit. Every repair includes a written guarantee for a full year; if the fix does not hold, we return at no charge under the 365-Day Done Right Promise.

AC Unit Repair

AC Unit Repair means fixing the condenser outside and the evaporator coil and blower inside, the two halves of your split system, with most jobs in Houston landing between $150 and $650. You need it when the outdoor unit runs but the indoor air is warm, when you hear grinding or squealing from either cabinet, or when water pools around the indoor unit. Dalton Heating & Air Houston diagnoses both sides before quoting anything, because a symptom at the indoor unit often traces back to the condenser outside. We explain what failed in plain terms before any work begins.

Condenser Repairs

The outdoor unit takes the brunt of Houston’s weather: sun, rain, humidity, and the occasional flood. Common condenser failures include capacitors, contactors, fan motors, and compressor issues, all of which we stock or can source same day in most cases. A noisy condenser fan motor, for example, typically costs $250 to $450 to replace and takes about an hour.

Indoor Unit Repairs

Inside the house, we see failed blower motors, clogged evaporator coils, frozen coils from low refrigerant, and cracked drain pans. A frozen evaporator is often mistaken for “low on Freon,” but the underlying cause is usually a dirty filter, a blocked return vent, or a slow leak. We find the actual cause before quoting the fix, so you do not pay for a recharge that will not last.

AC Capacitor Replacement

AC Capacitor Replacement is swapping the cylinder-shaped electrical component that starts and runs your compressor and condenser fan motor, and in Houston it typically runs $180 to $350 including the part and labor. You need it when your outside unit hums but does not start, when the fan spins slowly, or when the compressor shuts off after a few seconds. Dalton Heating & Air Houston keeps run capacitors, start capacitors, and dual-run capacitors on the truck for most major brands, so this repair is usually done the same visit. The capacitor is the single most common failure we see in Houston, because heat and voltage fluctuations from grid strain shorten its life.

Why Capacitors Fail in Houston

Houston’s summer heat pushes capacitor temperatures past their design limits, and the humidity accelerates internal breakdown. A capacitor that tested fine in April can be dead by July. Add in the voltage dips that come with peak air conditioning load, and capacitors take more abuse here than almost anywhere in Texas.

The Replacement Process

We test the old capacitor’s microfarad rating with a multimeter, confirm the failure, and install a new capacitor with the exact same or higher voltage rating. The part cost is line-itemed on your written quote, and the repair carries the full 365-Day Done Right Promise. If the new capacitor fails inside a year, we replace it and return at no charge.

AC Recharge

AC Recharge, also called a refrigerant recharge, is topping off the cooling fluid your system needs to reach set temperature, and in Houston it runs $300 to $600 when the underlying leak has been found and sealed. You need it when the air from your vents is cool but not cold, when the indoor coil ices over, or when your system runs constantly without reaching the thermostat setting. Dalton Heating & Air Houston does not just add refrigerant and leave; refrigerant does not get “used up,” so a low charge means there is a leak somewhere, and that leak has to be found and repaired first, or the refrigerant will leak out again.

Finding the Leak

We use an electronic leak detector and, when needed, a UV dye injection to pinpoint where refrigerant is escaping. Common leak points on Houston systems are the evaporator coil, the Schrader valve cores, and brazed joints on the line set. The leak repair and the recharge are quoted together, in writing, before any work starts.

R-22 vs. R-410A

If your system was installed before 2010, it may still run on R-22, which is no longer manufactured in the United States and now costs significantly more per pound than R-410A. That drives the price of a recharge on an older system toward the top of the $300 to $600 range. Our technician will tell you plainly if the cost of recharging an aging R-22 system makes replacement the smarter financial move, and the quote for either option is free.

Emergency AC Repair

Emergency AC Repair in Houston means getting a technician to your house outside normal business hours when your AC has failed completely and the indoor temperature is becoming unsafe, with most emergency repairs running $150 to $650 plus a modest after-hours dispatch fee. You need it when the system is down and the house is climbing past 85 degrees, when someone in the home is elderly, an infant, or has a medical condition worsened by heat, or when the AC trips a breaker and you smell burning. Dalton Heating & Air Houston answers the phone with a live person 24 hours a day, 7 days a week, and we do not route emergency calls to a voicemail queue.

What Constitutes an Emergency

In Houston’s climate, a complete cooling failure during a stretch of 95-degree days is a health issue, not just a comfort problem. If your indoor temperature is rising and the system will not respond, that is an emergency. If the unit is making loud grinding noise or you see smoke, shut the system off at the thermostat and the breaker, then call us immediately.

Same-Day and After-Hours Response

We prioritize emergency calls by severity, not by who called first. A home with a newborn or an elderly resident gets moved up the schedule. Calls placed before noon in Houston are typically serviced the same day; after-hours emergency calls get the next available technician, and we will give you an honest window when you call, not a vague “sometime tonight.”

AC Not Blowing Cold Air

AC Not Blowing Cold Air is the most common complaint we hear in Houston, and it is usually caused by one of five things: a dirty air filter, a failed capacitor, a refrigerant leak, a frozen evaporator coil, or a bad thermostat, with repairs ranging from $150 to $650 depending on the cause. You need professional help when the air coming from your vents feels room temperature or warmer than the room, when airflow is weak, or when the house will not cool below 80 degrees in the evening. Dalton Heating & Air Houston diagnoses the exact cause before quoting anything, so you are not paying for a guess.

Quick Checks Before You Call

Check the air filter first. A clogged filter starves the evaporator coil of airflow, which can freeze the coil and shut down cooling entirely. Also check that your thermostat is set to “cool” and the fan is on “auto,” not “on.” If the filter is clean, the thermostat looks right, and the air is still warm, the problem is mechanical or refrigerant-related, and that needs a technician.

How We Diagnose It

We start by measuring the temperature split between the return vent and the supply vent. A healthy system should show a 15 to 20 degree drop. Then we check the refrigerant pressures with manifold gauges, test the capacitor, and inspect the coils. The diagnosis is included in the free estimate, and the repair price is in writing before any work begins.

Brands We Service

Dalton Heating & Air Houston is factory-trained to service all nine major residential HVAC brands, and we keep a running stock of OEM and OEM-equivalent parts for the units most common in the Houston metro. Carrier systems are dense in the older neighborhoods of Spring and Humble, and we regularly replace Carrier-specific capacitors, contactors, and fan motors. Trane units are common in newer construction around Sienna Plantation and Pecan Grove, and our technicians know the Trane defrost and communication board quirks that confuse less experienced crews.

Lennox and Goodman round out the four brands we work on most days. Lennox systems, especially the higher-end communicating models, require specific diagnostic procedures that we perform on-site. Goodman units are everywhere in the Houston suburbs, from Friendswood to Rosenberg, and because they are so common, we keep a deep bench of Goodman parts on the truck to get repairs done the same day. Whether you have Carrier, Trane, Lennox, Goodman, or any other make, we can help. For more on the home side of our service area, see our location pages.

Signs You Need a Pro Right Now

• The outdoor unit runs but the indoor air is warm. This usually points to a failed compressor or a blown capacitor. Running the system in this state wastes electricity and can overheat the compressor, turning a $200 capacitor job into a $600 compressor job.
• You hear grinding, squealing, or banging from either unit. A failing fan motor or blower motor makes noise before it dies completely. Shut the system off and call us; running it until the noise stops usually means the part has already failed and taken something else with it.
• Ice is forming on the indoor coil or the refrigerant line. Ice means the coil is starving for airflow or the system is low on refrigerant. Continuing to run a frozen system sends liquid refrigerant back to the compressor, which can destroy it.
• Water is pooling around the indoor unit. A clogged condensate drain or cracked drain pan can leak water into your ceiling, drywall, or flooring. Houston’s humidity makes this a year-round issue, not just a summer one.
• The system short cycles, turning on and off every few minutes. Short cycling is usually a control issue, an oversized system, or a failing thermostat. It strains components, spikes your electric bill, and shortens the life of the compressor.

Our Process, Step by Step

1. 1
   Diagnostic visit. A background-checked, uniformed technician arrives inside the stated window and starts by listening to what you have observed. Then we test the system: manifold gauges on the refrigerant lines, amp draws on the compressor and fan motor, a multimeter on capacitors and contactors, and temperature splits across the coil.
2. 2
   Written price. Before any tool touches a part, you get a written quote that line-items the parts, the labor, and any refrigerant or materials. The number on that quote is the number you pay. This is not an estimate; it is a fixed price under The Garrison Standard, and Marco Benitez reviews every quote before it leaves the truck.
3. 3
   The repair. We perform the work using OEM or OEM-equivalent parts, and we follow the manufacturer’s service procedures for your specific brand. Most capacitor, contactor, and fan motor replacements are completed the same visit because we carry the parts on the truck.
4. 4
   System test. After the repair, we run the system through a full cycle, re-check the temperature split, re-test the repaired component, and confirm the system is holding the correct pressures. We do not leave until the AC is blowing cold air and the outdoor unit is running within spec.
5. 5
   Written guarantee. Every repair carries a written guarantee for a full year. If the repair fails inside 365 days, we return at no charge under the 365-Day Done Right Promise. The guarantee is printed on your invoice, not mentioned verbally and forgotten.

Our Service Area Near Houston

Dalton Heating & Air Houston serves the full metro from AC Repair in Houston proper to the surrounding communities. We run calls daily to Pearland, Baytown, Spring, Humble, Friendswood, and Rosenberg, with typical response times of 60 to 90 minutes for most of Harris County. In AC Repair in Pearland and AC Repair in Baytown, we service the full residential market, including new construction with high-efficiency systems. If you are in Fresno, Stafford, Pecan Grove, Seabrook, or Sienna Plantation, we are likely already working in your neighborhood this week.

Frequently Asked Questions About AC Repair in Houston

Schedule Your AC Repair Service in Houston Today

If your AC is down or struggling, call (903) 494-7686 now and speak to a live person, day or night. We will schedule a background-checked technician to arrive inside the stated window, diagnose the exact problem, and give you a written price before any work begins. The estimate is free, the repair is guaranteed in writing for a full year, and if it fails, we come back at no charge. That is The Garrison Standard, and it has been since 2003.

Written by Marco Benitez, Owner at Dalton Heating & Air Houston, serving Houston since 2003.