Emergency AC Repair in San Marcos

Same-Day Emergency Air Conditioning Service for Homes & Businesses

When your air conditioning fails during a San Marcos summer, waiting isn’t an option. Indoor temperatures can climb past dangerous levels within hours once a system stops working, making a fast response a health matter as much as a comfort one. Reliable Air has served residential and commercial property owners in San Marcos since 1996, and same-day emergency AC repair is central to what we do.

Our technicians work on the full range of cooling failures: complete system shutdowns, units running but blowing warm air, frozen evaporator coils, refrigerant leaks, electrical faults, and systems producing burning or unusual odors. Whether you own a home or operate a commercial property, we arrive ready to diagnose the problem, explain your options, and confirm pricing before any work begins.

Call us now at (512) 580-8837 to reach our team. We serve San Marcos and the surrounding Hays County area, and our technicians are available for both English- and Spanish-speaking customers.

Warning Signs That Require Emergency AC Repair

Some AC problems can wait for a scheduled appointment. Others signal a failure that’s actively worsening or posing a risk to your property. If you’re seeing any of the following, call for emergency air conditioning repair rather than troubleshoot on your own.

Signs your AC situation is an emergency:

No airflow or cooling output from a system that was running normally
Warm or room-temperature air blowing from vents with the thermostat set to cool
Burning, electrical, or chemical odors coming from vents or the outdoor unit
Grinding, banging, screeching, or clanking sounds that weren’t present before
Rapid on-and-off cycling or an inability to hold the temperature you’ve set
Tripped breakers or blown fuses connected to the AC system
Ice buildup on the indoor unit or refrigerant lines
Visible water leaking from the indoor air handler
Unexplained spikes in energy bills with no change in usage, which can indicate a system straining under a hidden fault

DIY repairs on HVAC equipment carry real risk: voided warranties, electrical hazards, and a failure that’s more expensive to fix after the fact. When you call Reliable Air for emergency AC repair in San Marcos, a technician can run a full diagnostic, walk you through the findings, and confirm the price before any work begins.

Continue Reading Read Less

"Tom was very honest, informative and professional."
I would definitely recommend this company to anyone.

- Daveed O.
"When he arrived he was professional, kind, and we knew we were in good hands."
He fixed our AC and was out in 45 minutes. Best of all we had no outrageous service call fee and saved us money. We definitely will use Reliable Air again and highly recommend them for your heating and air conditioning needs!

- Amanda N.
"Thank you JW!"
JW was very professional, checked the system out top to bottom, quickly identified the issues and hopefully, will be tasked with getting our heat system up and running after speaking with owner.

- Daryl F.
"These guys went above and beyond to help me."
They walked us through each issue and had us up and running inside of 2 hours. Amazing.

- Emily H.
"So thankful they could help us today during this unseasonably hot time."
Second time we've used Reliable Air. Andrew was on-time and professional.

- Robert G.
"I will use you guys again in the near future!"
He knew exactly what needed to be fixed and he was right on it. I thank you all for the quick, fast and in a hurry respond you did for my family and I. Especially during this freezing weather.

- Anna A.
"When Edgar arrived he was polite and courteous. He explained what he was going to complete the diagnostics first."
He then explained what needed to be done and made sure I understood. It was very appreciated that he gave me time to decide on my repair because it was going to cost a bit of money.

- Esther T.
"This company is by far the best company you can ever find. They have been helping us off and on for over a year."
There was no pressure - no salesy pitch - and they continued to help us even though they knew our system was old and needed to be upgraded. They would come late in the day if needs be, and worked around our schedule

- Susan & Blake

View All Reviews

Why San Marcos Residents & Businesses Call Reliable Air

Reliable Air was founded in 1996 by owner Cheryl, and we’ve been working in this community for nearly 30 years. That history shapes how we operate, from the technicians we hire to the standards we hold on every call.

A Stable, Well-Trained Team

Many of our technicians have been with us for 10 or more years. That kind of tenure matters on an emergency call: a technician who knows the local housing stock and common system types can be more likely to diagnose the problem correctly and resolve it in a single visit. We back that experience with continuous in-house training and periodic out-of-state training to keep the team current with evolving equipment and diagnostic methods.

Honesty Built Into Every Visit

We hire for values as much as technical skill. Candidates who don’t align with our commitment to honest, customer-first service don’t join the team regardless of experience. Our business is grounded in faith-and-family values, and we tie that directly to operating with integrity on every job. You’ll get a straight assessment of what’s wrong and what it will cost before any work starts.

Practical Details That Matter

We schedule with 2-hour service windows so you’re not waiting around all day. Financing options are available for qualifying work, and our team serves both English- and Spanish-speaking customers throughout San Marcos and Hays County.

Why Choose Us?

As times get tough, other companies cut corners. But we decided to stay reliable for over 30 years. Call us and you'll get:

Reliable Relationships
Many of our employees stay for 10+ years. So you'll always hear a familiar voice on the phone or see a familiar face at your door.
Reliable Scheduling
With same-day service and 2-hour scheduling windows, you'll get service at a time that's convenient for you.
Reliable People
Since we constantly train our employees, you can be 100% confident that your job will be done right—the first time.

Ready? Y'all Give Us a Ring! (512) 580-8837

Ready for Reliable Service?

Fill Out the Form Below or Call (512) 580-8837

First Name
Please enter your first name.
Last Name
Please enter your last name.
Phone
Please enter your phone number.

This isn't a valid phone number.
Email
Please enter your email address.

This isn't a valid email address.
Address
Please lookup your address.
Are you a new customer?
Please make a selection.
How can we help you?
Please enter a message.
By submitting, you agree to receive text messages from Reliable Air at the number provided, including those related to your inquiry, follow-ups, and review requests, via automated technology. Consent is not a condition of purchase. Msg & data rates may apply. Msg frequency may vary. Reply STOP to cancel or HELP for assistance. Acceptable Use Policy