Local San Marcos Heating & Air Conditioning Repair Services

Providing exemplary heating and cooling maintenance, repair, and HVAC replacements in the San Marcos area, Garner Heating & Air Conditioning is proud to be the local go-to company committed to keeping Texas homes comfortable, no matter what’s going on outside. For three decades, our certified technicians have been going above and beyond to make sure our residential and commercial customers are satisfied.

Central Texas weather can be brutal- but you shouldn’t have to know it from the inside of your home or office. Garner Heating & Air Conditioning is happy to extend our thirty years of expertise to our customers in San Marcos. Whether you are looking to maintain, repair or replace your AC or heating system, contact us for an estimate today.

AC Replacement San Marcos, TX

Heating and air conditioning replacement is an unavoidable eventuality, even with excellent maintenance. Once it becomes clear that your heater and AC needs to be replaced, our technicians will evaluate your space and your needs to design a superior system that will provide you with the comfort you deserve. Everything from duct work, vents, and airflow will be considered and optimized, to help save you money in energy costs and ensure the efficiency and longevity of your new system.

Here are the top considerations when choosing a heating and cooling company:

  1. They offer the best solutions for your problem. No matter what problem you are having with your air conditioning system they need to have the best and most efficient solution. They should first listen to your needs and explain how they are going to fix it. 
  2. Expertise and Trust: your HVAC system is probably one of the most costly items in your home and you don’t buy one every day. See what your San Marcos neighbors are saying about our 5 Star Services over the last 3 decades. 
  3. Free Estimates – they should offer a free estimate on the services that they will be performing. At a minimum, if they do charge a fee to come out, it should be included in the service if you decide to hire them. 
  4. Licensing – they need to be a licensed professional. The vast majority of HVAC pros are licensed but just check and make sure before hiring them. 
  5. How involved are they in your local community? We’re glad for the opportunity to give back to Hays County for 3 decades. Check out our yearly Gift of Heat community service.  

Give Garner Air Conditioning the opportunity to prove to you and your family that we can help fast and save you money in return. Call or text 512-392-2000 or schedule service online.

The average cost to repair an air conditioner in the San Marcos area is around $300. This takes into account every type of repair you could have on your AC system. 

Here is the typical average HVAC repair costs per service*:

  • Thermostat: $150
  • Replace capacitor or contactor: $200
  • Replace fan/blower motor: $250
  • Replace control board: $300
  • Replace evaporator coil: $500
  • Replace compressor: $1000 

*Costs and prices shown above are intended to be used as general information, not as guaranteed estimates. 

Contact Garner Air Conditioning online for a free in-home estimate on all your AC repair costs, call or text 512-392-2000 to schedule service.

The average cost to replace or install a central air system in the San Marcos area is around $10,000. On the low end it’s around $6,000 and could be upwards of $15,000 depending on your specific needs. 

What factors affect the cost of a new HVAC system:

  1. The size of your home or how much of your home you want to keep cool or heated at any given time. 
  2. How efficient your new system will be or SEER Rating. 
  3. Do you want or need upgrades in your thermostat, indoor air quality or ductwork?
  4. Warranty selection – most warranties come with limited and extended parts warranty. 
  5. Who you choose. You can negotiate with your HVAC contactor because not all charge the same price. Some offer coupons, specials and financing. Keep in mind that you want it done right the first time and ASAP especially if you home is hot or cold.  

Call or text Garner AC at 512-392-2000 and we’ll help determine the solution that best fits your home’s needs. Check out what your Hays County neighbors are saying about our services too.

It costs around $150-$350 to service your HVAC system in San Marcos, TX. Getting your HVAC system serviced twice a year is the best way to get the most out of your HVAC system. You should have your furnace serviced right before winter and your AC unit right before summer to prepare your HVAC system for the more taxing heating and cooling seasons. Give us a call today to get your HVAC system serviced.  

Your HVAC system may not be turning on in San Marcos, TX because: 

  • Your thermostat is not turned to the correct setting. 
  • Your air filters are dirty. 
  • The circuit breaker for your HVAC system has tripped. 

If your HVAC system is still not working after you check these problems, the issue may be more complex. In some cases, your HVAC system may not be working due to a refrigerant leak, which will require an HVAC technician to repair it. Call us today to get your HVAC system repaired.    

The following is included in AC maintenance in San Marcos, TX

  • A thorough cleaning of your AC unit. 
  • An inspection of your AC unit’s components. 
  • A replacement of your air filters. 

Having your AC unit maintenanced is a good way to ensure that your energy bills are lower and your AC unit runs more effectively. Additionally, it also allows you to spot any issues that may become bigger problems later on. To get your AC unit maintenanced, contact us today

See what your San Marcos neighbors are saying about our services below. 

Local Reviews
for San Marcos, TX

Garner Heating & Air Conditioning, Inc. Rated 5.0 out of 5 stars based on 43 customer reviews


Great service and assistance




Review of Garner Heating & Air Conditioning, Inc.

Garner heating and air helped us as soon as they could after the Polar Vortex of 2021. They helped us through the repair and replacement of our old system and even helped me work with my insurance company. All the works are great, helpful, and kind. Their office staff was great to work with also, always being polite and helpful. 5 Star in my opinion!!


Polar Vortex




Review of Garner Heating & Air Conditioning, Inc.

The company stayed in touch with use through the rolling blackouts and arrived as soon as they possible could and the power was on. The receptionist was great about working with us.


Knowledgeable, courteous, great service




Review of Garner Heating & Air Conditioning, Inc.

We have used Garner Heating and Air for 20 years. They put the original units in our home when it was built. They have always been responsive and prompt if we need service. Have known Max since he was a kid and seen him grow as a technician at Garner. He is always on time, courteous, and knows what he is doing. Max


Great Servicfe




Review of Garner Heating & Air Conditioning, Inc.

We are in our nighties andf depend on many service. Just want to say that we are cfompletely satisfied.


Great employees




Review of Garner Heating & Air Conditioning, Inc.


Easy to deal with and trustworthy.




Review of Garner Heating & Air Conditioning, Inc.


Always Good Service




Review of Garner Heating & Air Conditioning, Inc.

I have used Garner Heating and A/C for many years. They always arrive on time, perform excellent service and are reasonable in price.


Gerald Champagne




Review of Garner Heating & Air Conditioning, Inc.

Exacellent Service


Spring Maintenance




Review of Garner Heating & Air Conditioning, Inc.

Max is always very courteous and thorough.


Reliable, professional, cost effective




Review of Garner Heating & Air Conditioning, Inc.

They do excellent work with attention to detail. They do what they say the will do and are on time.


Max  B.

Max B.

When I arrived, the customer informed me that there is a pipe that cuts the corner of the sheet rock at the ceiling and the exterior wall. I found that the line set was not run through the header of the exterior wall before it went down. I informed the customer of my findings, and she chose to leave it until the system is replaced. After discussing the pipe, she asked me if I could check the refrigerant pressures. After checking the pressures, I found that the system is low on refrigerant. I presented the customer with her options on this repair, and she chose to do the work at the bronze level. The system is installed poorly and looks to be in poor condition. It is operational at this time.

Near N Bishop St, San Marcos, TX 78666
Max  B.

Max B.

After performing the diagnostic, I found that the expansion valve inside the evaporator coil was stuck and not metering correctly. I presented options to the customer, but I am waiting to hear back from the supply house on parts availability and warranty.

Near Belvin St, San Marcos, TX 78666
Chase R.

Chase R.

Near Oakdale Dr, San Marcos, TX 78666
Max  B.

Max B.

Performed the AC tune-up and everything is working at this time. See attached checklist for full tune-up details. I did discuss renewing the maintenance plan, but the customer may not be here in a few months so did not want to renew today.

Near Silo St, San Marcos, TX 78666
Max  B.

Max B.

When I arrived, the customer asked me to look at the evaporator coil to see how dirty it was. After opening the system up and looking at the 14-year-old evaporator coil it is in clean condition at this time. However, I did notice that the drain line and secondary pan had some issues and I addressed this with the customer. The drain pan is slightly off from underneath one of the corners of the air handler and has rust and corrosion at the bottom of it. I also noticed that there is no way to clear through the drain line and it does not have any safety switches in the drain line. I did present options to have the secondary drain pan replaced. The options also included re-piping the primary drain line with the installation of safety float switches in both the primary drain line as well as a secondary pan to prevent any sheet rock damage from the pan overflowing. The customer declined all repairs at this time.

Near Char Crest Ct, San Marcos, TX 78666
Max  B.

Max B.

After performing the diagnostic, I found that the capillary tube was rubbing on the reversing valve which caused a leak. I presented the customer with their options and they chose to have it repaired at the Gold level. After performing the Gold level repair everything is coming on and working at this time.

Near Longcope Loop, San Marcos, TX 78666
Chase R.

Chase R.

Unspecified ...

Near Sunnywood Ln, San Marcos, TX 78666
Max  B.

Max B.

Performed AC tune-up. I did recommend having a safety float and surge protection installed but the customer declined at this time. See attached checklist for complete tune-up details.

Near Nevada St, San Marcos, TX 78666
Ethan D.

Ethan D.

Installed new 4-ton heat pump system. Replaced supply and return plenum. Ran new line set, new 1” drain line and new control wiring. Installed SS-2 and SS-3 safety switches on drain. Installed new outdoor condenser. Installed new line filter drier on 3/8” copper. Pressure tested copper lines with dry nitrogen and pulled a deep vacuum to remove any moisture in the line set. Will be returning tomorrow to do the remaining duct work.

Near Sycamore St, San Marcos, TX 78666
Ethan D.

Ethan D.

Installed a new Carrier 4-ton heat pump system. Rebuilt condensate drain, replaced 20x20 filter base and installed an SS-2 safety switch. Made a field transition to the existing plenum and sealed with an air lock and mastic tape. Replaced outdoor condenser, installed a liquid line filter dryer, performed an extensive pressure test on refrigerant lines and pulled a deep vacuum on entire system to remove any moisture in line set. Charged the system to factory refrigerant specs and system is running upon completion of replacement.

Near Sunnywood Ln, San Marcos, TX 78666
Max  B.

Max B.

After performing the diagnostic, I found a bad breaker going to the condenser. I presented the customer with his options and he declined all options saying he would replace it himself. I did let him know that I would not be able to perform the system inspection afterwards.

Near Thurman Rd, San Marcos, TX 78666
Max  B.

Max B.

When I arrived, the customer informed me that he had the breakers turned off to the air handler while he switched out the batteries in the thermostat. We turned the breakers back on to the system and everything is coming on and working at this time. I presented the customer with his options to replace the thermostat and he told me he just wanted to do the diagnostic for today. The system is in poor condition.

Near Sycamore St, San Marcos, TX 78666
Max  B.

Max B.

The system is in poor condition due to the sub-freezing temperatures and needs to be replaced.

Near Sunnywood Ln, San Marcos, TX 78666
Max  B.

Max B.

After performing the diagnostic, I found that the low-voltage wire going to the condenser had a short in it causing the fuse to pop. I was unable to check over the electrical inside the condenser because it is a solid block of ice from the weather conditions outside today. I presented options to the customer for running a new wire and he chose to move forward with the repair, but we will need to wait until weather conditions improve. I will have our office reach out for scheduling next week. They do have electric heat running at this time however I did have to remove the wires going to the condenser so it would not pop the fuse again.

Near Lago Vista St, San Marcos, TX 78666
Max  B.

Max B.

Performed the heater tune-up and everything is working at this time. I was unable to check the ductwork due to not having access to the attic. The customer informed me that he will be cutting in a new pull-down staircase and hallway before we come out for the next tune-up.

Near Lacey Ln, San Marcos, TX 78666
Max  B.

Max B.

Installed locking caps per city code inspector

Near Snyder Hill Dr, San Marcos, TX 78666
Max  B.

Max B.

Performed the heater tune-up and everything is working at this time. While performing the inspection I did find the power disconnect to the condenser had completely failed so I presented the customer with his options. He chose to go ahead and have it repaired at the bronze level. After making the repair everything is coming on and working accordingly.

Near Barclay St, San Marcos, TX 78666
George T.

George T.

Performed heating tune-up on an American Standard system. Found heavy buildup at air movement system and no air flow feeding master bath due to incorrect installation. Adjustments made to thermostat threshold and customer will monitor.

Near Laurel Hill Rd, San Marcos, TX 78666
Max  B.

Max B.

Performed the heater tune-up on the Carrier heat pump system in the closet. While performing the inspection I did find and treat biological growth inside the blower compartment. I also found that the evaporator coil is starting to get dirty and if this continues, it will need to be cleaned.

Near Briarwood Ct, San Marcos, TX 78666
Max  B.

Max B.

Performed the heater tune-up and everything is working at this time.

Near Lime Kiln Rd, San Marcos, TX 78666

AC Repairs San Marcos, TX

When repairs to the HVAC system are needed, our N.A.T.E. certified technicians will quickly get your equipment back on track. Living without cold AC in the summer is not an option in Texas. Likewise, no one should be without heat in the winter- our team has years of experience trouble shooting and repairing air conditioners, heat pumps, and gas furnaces. All of our repairs come with a year long guarantee- we are committed to customer satisfaction.

AC Maintenance San Marcos, TX

Maintaining your heating and cooling components is incredibly important for the longevity of your system. Regular twice a year cleanings and tune ups will keep things running smoothly and save you time and money in the long run. A poorly running system will not only impede your ability to stay cool in the summer and warm in the winter; your energy costs will skyrocket as your system runs overtime to compensate.

Our A/C and heat experts will work diligently to thoroughly remove dirt and debris, which can quickly cause many of the common problems associated with poor performance and the shortened life span of your system. They will evaluate your equipment, catching potential problems before they become heating and air conditioning emergencies. Scheduling regular maintenance also has the added benefit of keeping the air quality in your residential or commercial property healthy.