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Top-Rated Geothermal heating or cooling system installers in Austin - Updated Nov 2026

Avatar for O 2 KOOL REFRIGERATION & A/C
O 2 KOOL REFRIGERATION & A/C
4.7(
584
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

Approved

In business since 2015

Emergency services offered

Warranties offered

"I can not say enough positive about Chris and Chuck and O 2 KOOL!! Chuck came out in early January to look at my old Trane gas furnace .. he got it going with no trouble. Now today ... during our ice/snow armageddon it went out again. I called and Chris FaceTimed with me .. looked at what was up and talked me through how to relight the system myself. Good news .. I now have heat! I strongly recommend them to anyone who needs help with their heating and cooling system! They not only helped, but assured me .. a 60 yr old woman .. everything would be OK and safe. That is a VERY rare quality!"
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+25

31 neighbors recently requested a quote
Recommended by96%of homeowners
Affordable A/C & Heating
4.6(
24
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"We have used Affordable Air twice. We had a new unit installed in May of 2011, after the wonderful experience we had with Sam we knew immediately who we would call for our system when we had to rebuild our home. Sam is patient, ON TIME, and very honest, even if the honest answer will be less expensive. I would use Sam and Affordable A/C again in an instant."
Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for E. Walk Services, LLC
E. Walk Services, LLC
5.0(
4
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

Approved

In business since 2021

Credit card accepted

Customers say: Quick response

"My A/C wasnâ t blowing as cold as it usually doesâ ¦ I thought it was going to be a huge problem (expense) with how hot it has been lately. Marcus came over, spent about 2 hours working on it and it worked perfectly. Did not try to sell me unneeded parts/services and was very pleasant throughout the process. I was very pleasantly surprised at the end with the cost and service. Will recommend to everyone I know."
Response time1 day
Recommended by100%of homeowners
Avatar for Stan’s Heating & Air Conditioning Inc
Stan’s Heating & Air Conditioning Inc
4.8(
470
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 1954

Free estimates

Emergency services offered

"Tech arrived on-time and performed the semi-annual inspection on both heat pumps and all 4 thermostats. They installed the original systems and I have used them ever since. They have been good at spotting potential issues and recommending work BEFORE there was a problem. Always a good job."
Recommended by94%of homeowners
Avatar for AC Pros HVAC
AC Pros HVAC
4.7(
487
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Top notch organization! Jon came out during the holiday to diagnose my problem and made quick work of the repair. Unfortunately, something else went wrong later with the system and I decided to replace the entire unit. Jon didn't push me into anything, just gave me the pros and cons for all of the options. AC Pros had Josh and his apprentice come out the next day and the two of them had the job done in a few hours. This is a great little local business that hits above their weight and really knows how to treat the customer. All of my neighbors' homes were built at the same time so when their furnace's hit the skids I will recommend AC pros to all of them. Great job guys!"
Before Cleaning
After Cleaning
Air Conditioner
Furnace and Evaporator
Recommended by90%of homeowners
Tyrone AC and Heating Inc
5.0(
11
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 2011

Emergency services offered

Credit card accepted

"

We met with several different AC companies to diagnose issues with our sickly AC. Most wanted to sell us a new system for $4800 but Tyrone let us know we could do a few minor repairs that would extend the life of our system. This gives us time to prepare for the inevitable, full replacement. I appreciate their honesty!


"
Recommended by100%of homeowners
Avatar for Air Care Today
Air Care Today
4.6(
29
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"I can think of nothing that I would change, or suggest be done differently. It went as if the installers were working on their own homes. Cliff did a great job of getting me the best deal on a great system, and Joe and Brandon showed great effort installing the system. They were both friendly and knowledgeable, and I could really see their commitment to doing the best job possible. I am just so grateful to have found Air Care Today, and chose to go with them. I will definitely mention Air Care Today to my coworkers and friends. Sincerely A lifetime customer Jeff Menacher"
Recommended by89%of homeowners
Avatar for CDW A/C and Heating Services, LLC
CDW A/C and Heating Services, LLC
5.0(
11
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"It was a wonderful experience. Charles Williams is a consummate professional. Very knowledgeable and gave us the best options for our needs. We recommend his services for anyone in need of any upgrade or replacing their air conditioning or heating unit. This company is the company to call for an honest assessment. We highly recommend this company."
Air Handler
Condenser Installation
Furnace Installation
Condenser Installation
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+5

Recommended by100%of homeowners
Avatar for Texas Air Repair
Texas Air Repair
5.0(
25
)
Geothermal Heating or Cooling System - Install

Serving Austin, TX and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Everything went very well. Everyone we dealt with at Texas Air was knowledgeable, friendly and responsive. All in all, we are happy with the new AC/Heating system and the service Texas Air has provided. We would definitely hire them again."
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+32

Recommended by100%of homeowners
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