Casa Mechanical Services
HVAC Services in Round Rock
CASA Mechanical Services specializes in Carrier HVAC installation, repair, and maintenance. Proudly serving Round Rock and the surrounding areas, we deliver reliable HVAC solutions to meet your home's needs.
HVAC Repair and Services

AC Repair & Service
We specialize in fast, reliable air conditioner repair and service to keep your home cool and comfortable. Whether it’s a minor fix or a major repair, we're here to ensure your AC runs smoothly when you need it most.

Furnace Repair & Service
We provide expert furnace repair and service. Our skilled technicians are ready to quickly diagnose and resolve any issues, keeping your home warm and comfortable year-round.

Heat Pump Repair
Count on us for dependable heat pump repair and service to keep your home comfortable year-round. Our experienced technicians troubleshoot issues, perform timely repairs, and ensure your system is operating at its highest efficiency.

HVAC Maintenance
We offer annual HVAC maintenance to keep your system running efficiently and help prevent unexpected breakdowns. Through a thorough inspection and tune-up, we ensure your heating and cooling system is ready to keep you comfortable all year long.
HVAC Installation Services

AC Installation
Enhance your home’s cooling and energy savings with our expert AC installation services. We install high-performance Carrier air conditioners and customize each system to match your home’s needs, helping ensure dependable comfort all summer long.

Furnace Installation
Stay warm and worry-free with our professional furnace installation services. We’ll guide you in selecting the best Carrier furnace for your home and complete the installation with expert care and precision.

Heat Pump Installation
Upgrade your home’s comfort and efficiency with our professional heat pump services. Our team installs top-quality Carrier heat pumps and tailors every system to fit your space, delivering reliable performance through every season.

HVAC System Installation
We provide expert HVAC installation to keep your home comfortable year-round. Whether you're replacing your current system or installing HVAC for the first time, we'll help you choose the right solution for your needs and handle the installation with precision and care.
Trusted HVAC Professional in Round Rock
Excellent installation and explanations!
September 30, 2025
I was really pleased with the service and knowledge of the technicians.
VICKIE
Expertise (5)
Solve Problems (5)
Service (5)
Excellent service and knowledge
September 17, 2025
Excellent service and timely response. Polite workers who left everything in my home as they found it.
SHERRY
Expertise (5)
Solve Problems (5)
Service (5)
Two new units
August 11, 2025
Excellent experience in ascertaining available options, the selection and pricing of these options, and finally the timely installation of the selected equipment. Would definitely use CASA Mechanical Services again.
GARY
Expertise (5)
Solve Problems (5)
Service (5)
Very satisfied and great job.
June 20, 2025
Gus and team did an excellent job on the install. He was very informative and answered all my questions. David Jean was very prompt and went over the complete process
STEVE
Expertise (5)
Solve Problems (5)
Service (5)
Reputable Contractor
May 23, 2025
Very professional and reasonably priced
RODGER
Expertise (5)
Solve Problems (5)
Service (5)
Excellent service
May 16, 2025
EXCELLENT service! The service tech Usbaldo Mercado came to diagnose the problem the same day service was requested. It took a little over a week for the part to arrive. But once it did, Usbaldo and crew came the very next day to install the new part (working until after 8 pm!) to get our AC up and running!
MARTHA
Expertise (5)
Solve Problems (5)
Service (5)
Best A/C company in Austin
May 15, 2025
Awesome!!
Dave
Expertise (5)
Solve Problems (5)
Service (5)
AC install
March 28, 2025
timely service!
ROBERT
Expertise (4)
Solve Problems (4)
Service (5)
Reliable and professional service
March 28, 2025
CASA Mechanical installed our unit in 2013 and has been providing service ever since. The staff are responsive and professional. They provide prompt service and are consistently able to diagnose and repair the unit as needed. I have a service contract, so CASA Mechanical checks my HVAC system twice a year to keep the system in good shape. When there has been a problem, CASA Mechanical responds promptly and fixes the issue satisfactorily. I highly recommend this company.
CRAIG
Expertise (5)
Solve Problems (5)
Service (5)
Excellent Experience!!
March 27, 2025
Extremely pleased with everything involved in the purchase/installation of our new Carrier system, would not hesitate to recommend to others!
DANNY
Expertise (5)
Solve Problems (5)
Service (5)
replace AC
March 25, 2025
good service
Robert
Expertise (4)
Solve Problems (4)
Service (4)
Excellence
March 07, 2025
Professional, knowledgeable and caring of your needs. CASA is the answer for your issues.
SANDRA
Expertise (5)
Solve Problems (5)
Service (5)
Great HVAC Business
March 06, 2025
Dennis is an excellent salesman and Joe Pringle runs a tight ship.
JACK
Expertise (5)
Solve Problems (5)
Service (5)
Great installation.
March 27, 2024
Great to work with. Had to fire our builder half way through the home build and casa step up when we needed them to finish our house. True professionals that know hvac.
BRAD
Expertise (5)
Service (5)
Solve Problems (5)
It was time!
March 20, 2024
After 20+ years it was time to replace our main bedroom A/C unit. Casa Mechanicak maintenance made it last a long time and they were very helpful and fast with the replacement. Very fair price.
RONALD
Expertise (4)
Service (4)
Solve Problems (4)
One of the best service experiences I have ever had
March 05, 2024
CASA Mechanical was awesome to work with. They were quick, did a great job, cleaned up and were able to answer all my questions. I was super impressed with them and would definitely use them again.
KEITH
Expertise (5)
Service (5)
Solve Problems (5)
Great Service
January 08, 2024
Professional and explained everything
BARBARA
Expertise (5)
Service (5)
Solve Problems (5)
EXCELLENT
December 14, 2023
Casa Mechanical was EXCELLENT from every standpoint.
DAVID
Expertise (5)
Service (5)
Solve Problems (5)
Making it "COOL"
November 09, 2023
The crew came over and got to work right away. They took care to make sure the inside of my home was protected. Afterwards they explained everything to me.
MIGUEL
Expertise (5)
Service (5)
Solve Problems (5)
Couldn't have been better!
September 26, 2023
Great service at a great price!
STEPHAN
Expertise (5)
Service (5)
Solve Problems (5)
EXCEPTIONAL SERVICE FROM CASA MECHANICAL
September 20, 2023
I can not say enough positive things about our experience with Casa Mechanical. The crew showed up on time, were extremely personable and professional and did an exceptional job of installing our new air conditioner.
MIKE
Expertise (5)
Service (5)
Solve Problems (5)
A/C replacement
September 19, 2023
Great service!
ERIK
Expertise (5)
Service (5)
Solve Problems (5)
Parts replacement
September 07, 2023
excellent and quick work
PHILIP
Expertise (5)
Service (5)
Solve Problems (5)
Awesome Dealer!!
August 24, 2023
Installed a heating and a/c unit. The total experience was EXCELLENT. From the ordering process with Gino to the installation with Gus and his crew, nobody does it better!!
JEFF
Expertise (5)
Service (5)
Solve Problems (5)
Great experience! Great Deal!
August 09, 2023
This is my second HVAC install this year and everything went very well with both! Dennis was extremely helpful through both purchases.
ROBERT
Expertise (5)
Service (5)
Solve Problems (5)
Quick and thorough
August 01, 2023
In the current heat wave the CASA crew was in and out in less than 3 hours removing the old system and installing the new.
MICHAEL
Expertise (5)
Service (5)
Solve Problems (5)
Seamless
August 01, 2023
Casa Mechanical Services HVAC technicians were friendly and efficient. Gino our program manager kept us informed before and after installation.
CRIS
Expertise (5)
Service (5)
New A/C Installation
July 17, 2023
Casa Mechanical team was excellent from bid to installation team, very professional!
JOSEPHINE
Expertise (5)
Service (5)
Solve Problems (5)
Unpleasant experience with multiple visits to complete successful installation.
July 16, 2023
Our installation took five visits to complete. We were not familiar with AprilAire filters and asked the project manager to explain the advantages for the AprilAire filters. After several email exchanges we agreed to install the AprilAire. 1. On 6\-26\-2023 the installers arrived to install one unit for the first floor and one unit for the second floor. We left the house and the crew called us when the job was done. We asked the crew to show us the AprilAire. The crew said that they were told not to install the AprilAire. We emailed the project manager and asked him to review the emails and see that we wanted the AprilAire. 2. On 7\-1\-2023 the crew returned and installed the AprilAire cabinets and filters. 3. On 7\-5\-2023 the upstairs unit stopped cooling. A service tech came on 7\-6\-2023 and inspected the unit and found a loose wire and tightened the wire and the unit started cooling again. 4. On 7\-9\-2023 the upstairs unit stopped cooling again. A service tech came on 7\-10\-2023 and found that the compressor in the outside unit was not turning on. The project manager wanted to replace only the compressor, but we insisted on a new condenser. We spoke with the project manager's boss and asked for a new condenser. We were very concerned that other parts on the original equipment would later turn out to be faulty. 5. On 7\-11\-2023 another installer came and replaced the condenser. The unit is cooling as of 7\-16\-2023. The serial number on the original unit is 2123C58723. The serial number on the new unit is 2123C58752. We had to use extra energy to cool down our home on three separate occasions. At this point we do not know if the heating components will have any installation/manufacturer issues. It is too hot to test the heater. The heater will be tested when winter arrives.
CRUZ
Expertise (4)
Service (3)
Solve Problems (3)
CASA was great to work with. Very satisfied.
July 07, 2023
CASA was great to work with. Very satisfied.
WILLIAM
Expertise (5)
Service (5)
Solve Problems (5)
Sales and installation were fast and professional.
July 07, 2023
The quality control of Carrier manufacturing process was disappointing . The evaporator had a structural defect allowing it to leak and the compressor cabinet had fins that were bent.
CHARLES
Expertise (4)
Service (4)
Solve Problems (4)
Great service!
May 31, 2023
CASA was great. Installers were knowledgeable and professional. Answered all my questions.
CHRIS
Expertise (5)
Service (5)
Solve Problems (5)
A/C Installation
May 26, 2023
Reasonable prices and fast service
CARMINE
Expertise (5)
Service (5)
Solve Problems (5)
Excellent Installation
May 25, 2023
They did a great job installing the new system
CARL
Expertise (5)
Service (5)
Solve Problems (5)
Top notch
May 24, 2023
Excellent job installing 2 AC/furnace units
TODD
Expertise (5)
Service (5)
Solve Problems (5)
Bad A/C turned into a New A/C for Grandma
May 22, 2023
Even though having to buy a new A/C unit isn't the top of my list everyone at Casa made this a quick, professional and also friendly process. Everyone was polite and helped me so much with all my questions and worries. Thank you service tech Ray and Sales Rep Gino and the 3 guys that did the installation . I recommend my grandson call Casa for his new A/C and he did and will be getting his installed in the next couple of days.
DONNA
Expertise (5)
Service (5)
Solve Problems (5)
Rushed
March 08, 2023
Had outside unit worked on 5 months ago then then inside unit goes out. You do the math!
RAQUEL
Expertise (1)
Service (3)
Solve Problems (1)
CASA ROCKS!
November 15, 2022
Great work guys!
DAVID
Expertise (5)
Service (5)
Solve Problems (5)
Great Service
August 15, 2022
Installation team arrived early; started working quickly. Cleaned up area thoroughly before leaving.
JENNIFER
Expertise (5)
Service (5)
Solve Problems (5)
Casa Mechanical Full HVAC system replacement was BEYOND EXPECTATIONS!!!
June 29, 2022
I had an older R\-22 system on my home that I have pieced together over the years because I was dreading having to replace it. I contacted Casa Mechanical explaining what my circumstances were and that I was waiting to replace the unit until I was at that point with my remodel so I could make changes with my ductwork and unit location. They sent out one of their senior technicians, Dennis, who walked through the house and listened and I explained what I was trying to accomplish during my remodel of my home. He reassured my we could replace the unit with a conversion kit to accommodate how my ductwork is currently and when I was ready to convert it the changes I make to the home they could come back in and make minimal alteration at that time so we could get the unit replaced now. All in all it, was the hard work of his installers, Gus and 2 other gentlemen, that got my old unit removed and new unit installed in one afternoon and it runs smoother and colder than I could have ever imagined. My wife and family are ecstatic and 100% satisfied with work ethics, professionalism and customer service especially with these challenging times our world is facing right now. I can't say enough great things about this company all the way from the laborer on the ground doing the work to the management team and office staff this company employees. They truly care about the products and service they provide to their customers. I will always look to them to do work for me, my friends and family for future service and projects. Thank you CASA MECHANICAL!!!
SPENCER
Expertise (5)
Service (5)
Solve Problems (5)
Excellent Service!!
June 26, 2022
Working in a small space, the team resolved issues as they worked.
SUSAn
Expertise (4)
Service (5)
Solve Problems (4)
Have had them replace 2 AC units for us. Great service & competitive prices
June 24, 2022
This is the 2nd Carrier system I have had installed by Casa. Our 15 year old upstairs unit went out about 5 years ago and now its downstairs sibling went out this year. Casa gave me a range of options with competitive prices and did a great job replacing the units.
TIM
Expertise (5)
Service (5)
Solve Problems (5)
Casa Mechanical provides exceptional service with great pricing!
June 07, 2022
Casa Mechanical provides exceptional service with great pricing!
TRAVIS
Expertise (5)
Service (5)
Solve Problems (5)
Exceptional work
May 26, 2022
Very clean installation, exceptional work, as well as performed in a timely manner.
STEVE
Expertise (5)
Service (5)
Solve Problems (5)
Fantastic!
May 03, 2022
Everything was smooth and easy, everyone was very knowledgeable and professional!
RANDY
Expertise (5)
Service (5)
Solve Problems (5)
Replacement Heat Pump
February 20, 2022
These guys are great! No empty promises or bait and switch. If they give you a time frame, they meet it or beat it, and the equipment you ask for is installed right the first time.
TOM
Expertise (5)
Service (5)
Solve Problems (5)
Found my HVAC & Plumbing company for the foreseeable future
February 15, 2022
They did a great job removing a Frankenstein'd system that was 13\-18 and installing a completely new system. Explained everything that was being installed what it was doing. Accurate quote for what the final price ended up being. House was built in the 60s and needed a new system badly. This new system is great and most if not all our previous issues have been resolved.
ANTHONY
Expertise (5)
Service (5)
Solve Problems (5)
HVAC Installation
January 15, 2022
We were very happy with price and timeliness of installation.
JORGE
Expertise (5)
Service (5)
Solve Problems (5)
Thumbs up
December 29, 2021
I have worked with CASA Mechanical for over 10 years. They have always provided me with great customer service.
JOHN
Expertise (5)
Service (5)
Solve Problems (5)
Excellent
December 23, 2021
Courteous technicians, Timely installation under the time they estimated, listened to questions \& inquiries, Cleaned\-up upon completion of job
TOM
Expertise (5)
Service (5)
Solve Problems (5)
????????
December 06, 2021
Great customer service.
QUINCY
Expertise (5)
Service (5)
Solve Problems (5)
CASA Mechanical is the best!
December 02, 2021
Very impressed by the install \- professional, prompt and worked around new\-born baby.. highly recommend this team! This was not an easy install, and the team did a great job. On the front end, they showed up, priced and delivered exactly as promised. THANK YOU
DEBBIE
Expertise (5)
Service (5)
Solve Problems (5)
Awesome experience and equipment
November 29, 2021
Recommended from a friend who had a good experience. Gino was prompt and very knowledgeable with the estimate. Once the equipment arrived they installed everything quickly and cleanly. The crew was fast and efficient and they worked around the eccentricities of our older house, even relocated the new system and added ductwork and a new return! Great service and the pricing was by far the best.
TYRELL
Expertise (5)
Service (5)
Solve Problems (5)
Perfect
November 02, 2021
Installers were also great
SHERI
Expertise (5)
Service (5)
Solve Problems (5)
Retro fit old 21 year old unit.
September 25, 2021
Extremely professional and neat.
RICHARD
Expertise (5)
Service (5)
Solve Problems (5)
Excellent
September 07, 2021
Excellent Service
BRANIMIR
Expertise (5)
Service (5)
Solve Problems (5)
CASA Mechanical Review
September 03, 2021
The technicians were very professional. Stayed late to insure the product was working properly. They also communicated fully about process and status. Would highly recommend.
RICK
Expertise (5)
Service (5)
Solve Problems (5)
CASA Mechanical and Carrier Review
August 06, 2021
Great service, competitively priced and very honest. Have used them for over 10 years and will continue to do so.
STEVE
Expertise (5)
Service (5)
Solve Problems (5)
Outstanding service
July 13, 2021
Great crew
NELSON
Expertise (5)
Service (5)
Solve Problems (5)
Quick and clean
July 13, 2021
Had new A/C, furnace system installed for upstairs. Bid was easy via email/phone. Install team was efficient, clean, and had good communication skills.
ANNE
Expertise (5)
Service (5)
Solve Problems (5)
Excellent
July 05, 2021
None
LOGAN
Expertise (5)
Service (5)
Solve Problems (4)
Casa provides an excellent service at a competitive price
July 05, 2021
Casa is an excellent, and dependable company. We rely on them for HVAC and Water Heating. Very happy with the Carrier and their install so far.
BRAD
Expertise (5)
Service (5)
Solve Problems (5)
Should have looked further at other options
July 02, 2021
Not the best experience as communication was very poor on cost/ payment options as well as what to expect from the equipment. Also, I was asked nor notified that my attic access would be impeded but the installation design. The air conditioner does work though.
JULIE
Expertise (3)
Service (3)
Solve Problems (3)
Extremely satisfied with system replacement
June 17, 2021
CASA Mechanical changed out two systems in four hours. Their technicians were amazing and extremely courteous. The installation was very professional and reasonably priced. I highly recommend this service.
THEODORE
Expertise (5)
Service (5)
excellent installation
May 02, 2021
Gus and Corey did an excellent installation of the compressor, coil and furnace.
Jonathan
Expertise (5)
Service (5)
Solve Problems (5)
Excellent
March 04, 2021
Excellent
Janette
Expertise (5)
Service (5)
Solve Problems (5)
Excellent Installation
August 29, 2020
Good clean job of installing complete Performance series A/C system with furnace. Quiet Condenser.
Jonathan
Expertise (5)
Service (5)
Solve Problems (5)
Satisfactory
August 11, 2020
Carrier was selected by our builder for our new home. So far have had no problems.
Anita
First Class Operation
September 25, 2019
Contractor that exhibited attention to detail.
Steven
Expertise (5)
Service (5)
Solve Problems (5)
Great customer service
August 27, 2019
Great customer service
Seth
Solve Problems (5)
Great
July 25, 2019
Excellent customer service
Darren
Expertise (5)
Service (5)
Solve Problems (5)
AWESOME SYSTEM
August 23, 2018
VERY QUIET/EFFICIENT/SMART
JERRY
Expertise (5)
Service (5)
Solve Problems (5)
Great product
July 11, 2018
Great product.
Erica
Expertise (5)
Service (5)
Solve Problems (5)
Jordan
April 10, 2018
seems good
jordan
Expertise (5)
Service (5)
Solve Problems (5)
Tedious registration process
April 01, 2018
Took an hour or more to register online
Bruce
Expertise (2)
Service (2)
Solve Problems (2)