AC Installation and Replacement in San Marcos, TX

Providing San Marcos with Reliable AC Installs In Unreliable Times

As times get tough, other companies cut corners. But we decided to stay reliable—for over 20 years. Call us for a San Marcos air conditioning installation and you'll get:

  • Reliable people—Since we constantly train our AC installation techs, you can be 100% confident that your job will be done right—the first time.
  • Reliable financing— High credit score? Low credit score? We can help people with either!
  • 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 San Marcos door.
Online Special

Save $500 on Your A/C Installation

Schedule today and you'll get $500 off select high-efficiency systems.

How to redeem: Just mention the deal to your technician. No need to print!


Cost of an AC installation in San Marcos, TX

Low Price$3,000
Average Cost$6,500
High Cost$10,000+

Want an accurate installation price for your air conditioner?

Contact us for an in-home estimate (it's free).

Service Area

Providing AC installs to San Marcos and these areas

Reliable Air Texas
How It works

How we work in 5 easy steps

  1. Schedule your estimate

    Schedule an in-home estimate online or call us at 512–396–8183. We schedule service in 2-hour windows, so you will be notified around the time we'll arrive.

  2. Notify you before we arrive

    Your AC technician will call you when they're 30 minutes away, so you don’t have to wait around all day.

  3. Give you a price

    Once your AC tech arrives, they’ll investigate your air conditioning system and do the calculations needed to determine the system size you need for your San Marcos home. Then, you'll get a price quote.

  4. Install your system

    We can usually get an installer to your home within 2 days to install a new air conditioner. If we can't get to you in time, we'll provide temporary air conditioning or put you up in a hotel up to 3 days - on our own dime.

  5. Make sure you're happy

    We don't just dine and dash. After the AC installation, we will call to get your feedback so we can ensure you're 100% satisfied with the work provided.

How we work
Customer Reviews

See AC Installation reviews from Texas homeowners

4 stars on Yelp
4.8 stars on Google

"They are friendly and customer-oriented"

"We have been a customer of Reliable Air since 2009 and will not use any other company. They are friendly and customer-oriented and will work on an issue until it is resolved to your satisfaction. Their technicians are professional and knowledgeable. Our technician is Toby and he is very thorough and follows through on his work. We did renovations on our home a few years back and requested our contractor to use Reliable Air for any HVAC work."

-J & M.

"Polite and easy to work with"

"Alan F. with Reliable Air just got done with an A/C inspection at my home. He was professional, called before he came, and did a thorough check-up on my system. He answered questions I had, and was polite and easy to work with. He has also done work at my place of business, and his skill and knowledge have helped us keep things cooling and heating as they should. I highly recommend Alan and the rest of the Reliable Air crew."

-Chad C.

Our 100% satisfaction guarantee

We do whatever it takes to make you happy (like, 3-day weekend happy). So, if you have any issues with our AC installation, we'll make it right—even if that means giving you your money back.

Reliable Air Van

Ready? Y'all give us a ring!