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Sigma Air Heating & Cooling

Licensed
Licensed
$39/service call

(waived if hired)

Scheduling

Responds in about 1 min

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If you hire this pro, you’re covered by a money-back guarantee. Learn more

About
About Sigma Air, A Legacy of Excellence: At the heart of Sigma Air Heating & Cooling is a story of perseverance, vision, and the pursuit of building something bigger than just a business—it’s about building trust, comfort, and community. Founded in 1994, Sigma Air Heating & Cooling began as a small, family-led venture in San Antonio, Texas. Over the years, it has grown into one of the most respected HVAC providers across the state, specializing in residential, multifamily, and commercial HVAC solutions. For decades, Sigma Air Heating & Cooling has led the way in HVAC excellence. Now, we’re bringing that same quality and commitment to homeowners across Greater San Antonio. Whether you’re dealing with a broken AC, looking to upgrade your system, or need fast emergency help, we’ve got your home covered. Let’s Bring Comfort Home! Just bring us a written quote from a reputable, licensed company within the last 30 days, and we will beat the quote for new equipment installations or complete new HVAC system installations. *Cannot be combined with other offers*. Simply make an appointment by clicking the button below and one of our staff members will reach out on how to save you money!
Overview

Hired 20 times

Serves San Antonio, TX

Background checked

License verified

27 employees

32 years in business

Business hours

SunClosedMon7:00 am - 6:00 pm

Payment methods

This pro accepts payments via Apple Pay, Cash, and Credit card.

Social media

Instagram

Credentials

License verified

Air Conditioning / Refrigeration Contractor

License state: TX

Background checked

Passed by Alan Ruiz on Feb 24, 2026.

Services offered
A/C services needed
Property type

House

Condo/Apartment

Townhouse

Business

Projects and media
Projects and media
Reviews

Customers rated this pro highly for value, responsiveness, and work quality.

Excellent 4.9

73 reviews

5

96%

4

1%

3

0%

2

0%

1

3%

Read reviews that mention:

pro avatar
KatLynne G.

3 weeks ago

•

Hired on Thumbtack

Anthony was amazing. Quick turnaround and efficient process all around. I contacted Sigma on a Saturday around 9am, a tech was at my house by 12. Professional, polite, and quite honestly the issue was something I should have caught myself but Anthony didn't make me feel silly for it. He took his time, thoroughly inspected everything to make sure there was nothing else wrong, and truly was so kind. 10/10 process from beginning to end, I know who I am going to call in the future and recommend from now on. Thank you Sigma Air!

Details: Repair • Only warm air is blowing from the vents • Outside • Outside • House • Owner

Sigma Air Heating & Cooling's reply
KatLynne, Thank you so much for your thoughtful review! We’re thrilled to hear Anthony provided such a fast, professional, and reassuring experience. At Sigma Air Heating & Cooling, we believe every customer deserves honest service, clear communication, and a technician who takes the time to do the job right. We’re glad Anthony made you feel comfortable throughout the process and ensured everything was thoroughly checked. Your recommendation truly means a lot to our team, and we appreciate you trusting Sigma Air Heating & Cooling with your home comfort needs. We’ll be here whenever you need us!
Central Air Conditioning Repair or Maintenance
pro avatar
Katlynne G.

3 weeks ago

•

From Google

Anthony was amazing. Quick turnaround and efficient process all around. I contacted Sigma on a Saturday around 9am, a tech was at my house by 12. Professional, polite, and quite honestly the issue was something I should have caught myself but Anthony didn't make me feel silly for it. He took his time, thoroughly inspected everything to make sure there was nothing else wrong, and truly was so kind. 10/10 process from beginning to end, I know who I am going to call in the future and recommend from now on. Thank you Sigma Air!
Sigma Air Heating & Cooling's reply
Thank you so much for the incredible review! We’re thrilled to hear Anthony provided such a positive experience and was able to get out to your home quickly. At Sigma Air Heating & Cooling, we know HVAC issues don’t always happen at convenient times, which is why we work hard to provide fast response times and dependable HVAC system repair when you need it most. We’re especially happy to hear Anthony made the experience comfortable and stress-free. We believe great customer service means taking the time to explain things, performing a thorough inspection, and treating every homeowner with respect—no matter how simple or complex the issue may be. Delivering professional air conditioning repair, HVAC troubleshooting, and same-day service is what our team strives for every day. Your recommendation means the world to us, and we truly appreciate you trusting Sigma Air Heating & Cooling. We’ll be here whenever you need reliable heating and cooling service in the future!
pro avatar
sam A.

4 weeks ago

•

From Google

Sigma came out and serviced my equipment that I was having issues with even calling later in the day, they were able to make it out before 4pm. My system is now running as it should.
Sigma Air Heating & Cooling's reply
Thank you for sharing your experience! We’re glad our team at Sigma Air Heating & Cooling was able to respond quickly and service your equipment the same day. Providing fast, dependable HVAC system maintenance and getting your heating and cooling system back to peak performance is always our goal. We know how important a properly working A/C system is, especially when unexpected issues come up. We’re happy to hear your system is now running the way it should after our service visit. Thank you for trusting Sigma Air Heating & Cooling for your HVAC maintenance and repair needs—we appreciate your support!
pro avatar
Keith S.

4 weeks ago

•

From Google

Highly recommend this company. David and Trey were very professional and provided excellent communication. Overall, they did a great job!!
Sigma Air Heating & Cooling's reply
Thank you for your kind recommendation! We’re happy to hear you found our pricing reasonable and that our techs provided professional service with clear communication. At Sigma Air Heating & Cooling, we focus on delivering dependable HVAC system repair and maintenance with honest pricing and a smooth customer experience from start to finish. It’s great to know our team made a positive impression. Whether it’s air conditioning repair, heating service, or routine HVAC maintenance, we’re committed to keeping your system running efficiently and your home comfortable year-round. Thank you for choosing Sigma Air Heating & Cooling—we truly appreciate your support!
pro avatar
Ethan S.

4 weeks ago

•

From Google

Excellent service from David and Trey. Super respectful and courteous with excellent service. I have had multiple other A/C companies Ive used over the years and these guys were leaps and bounds above the rest. Cannot recommend enough, top notch.
Sigma Air Heating & Cooling's reply
Thank you for the outstanding review! We’re glad to hear our techs delivered such respectful, courteous, and top-quality service. At Sigma Air Heating & Cooling, we take pride in standing out from other A/C companies by providing reliable HVAC system repair and maintenance with honest pricing and exceptional workmanship. It means a lot to know you found our team “leaps and bounds above the rest.” We’re committed to keeping your air conditioning and heating systems running efficiently with expert diagnostics, professional repairs, and thorough maintenance. We truly appreciate your recommendation and thank you for trusting Sigma Air Heating & Cooling for your HVAC needs—we’re always here when you need dependable, top-notch service!
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