AC & Heating Tune-Up in San Marcos, TX
Save Money & Prevent Breakdowns with Regular HVAC Tune-Ups
At Reliable Air, we offer high-quality and thorough tune-up services for your furnace, heat pump or AC. When you choose us to tune up your heating and cooling systems, you'll get:
- Lower monthly bills, due to our ability to keep your HVAC systems operating as efficiently as possible
- Peace of mind that we'll find and correct any issues during our 21-point inspection of the system, wiring and components
- A longer-lasting system that is less prone to untimely repairs and breakdowns.

-
"The installation came with a 10 year parts and maintenance, so this is all being done free of charge."
We used them to install a brand new a/c unit about 4 years ago and just had our first issue with it this week. I called yesterday, and they had someone out first thing this morning to fix it.- Dave N. -
"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. -
"Their technicians are amazing and wonderful staff."
Our system stopped cooling and reliable was quick to respond. They easily diagnosed the issue and took care of it immediately. Our safe T sensor kept tripping they cleaned the drain and fixed the sensor.- Erik G. -
"Tom was very honest, informative and professional."
I would definitely recommend this company to anyone.- Daveed O. -
"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. -
"Technician JW called ahead of arrival and was on time."
JW quickly ID the problem and explained what was happening and what needed to be done. He was personable and completed the job w/o delay.- Travis H. -
"Thanks again for the great service!"
Geoff came to fix our toilet that's been acting up for a couple of weeks now. He did a great job and was very professional. He was very kind and helpful.- Michelle M. -
"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
Why Invest in Regular Tune-Ups?
When you invest in annual tune-ups, you benefit from:
- Lower monthly utility bills. Heating and cooling tune-ups keep your systems more efficient, which lowers the amount of energy they need to run and reduces your energy costs.
- Higher comfort levels. When your HVAC system is properly maintained, it can more precisely hit any temperature you want as well as provide proper dehumidification in the summer.
- Increased system lifespan. Systems that are annually maintained typically live longer than those that are neglected.
- Lowered risk of repairs/breakdowns. During a tune-up, we'll identify and fix small issues before they lead to major repairs and/or breakdowns
- Keeping your manufacturer's warranty valid. Most manufacturers will automatically void your warranty if you can't prove that you've had your system regularly maintained by a professional.
Want to Put Your HVAC Maintenance on Autopilot?
Having to buy one-off HVAC tune-ups throughout the year is a lot to remember. Let our VIP Maintenance Plan make it easier on you.
When you become a VIP member, we'll call you when it's time to schedule your heating or cooling tune-up. So you'll never worry about forgetting to book a tune-up again!
On top of this benefit, VIP members also receive:
- 15% discount on repairs
- Priority Customer Status, so you can jump in line ahead of non-priority members
- Inflation protection
- A transferrable agreement (if you move or sell your home)
Cost: $249 per year 1 system, $229 any additional systems

How Our Process Works
- Schedule Your Repair - We make it easy for you to schedule your duct repair service. Just give us a ring at (512) 580-8837 or use our online appointment scheduler. We offer 2-hour scheduling windows. We will send you a confirmation, so you’ll know when we’re arriving.
- Notify You Before We Arrive - Your service technician will call you when they’re 30 minutes out. This way, you won’t have to wait around, wondering when they’ll get there.
- Give You a Price - Prior to your service, your technician will inspect the areas that need repairing. They’ll also provide you with upfront and transparent pricing, so you never have to worry about receiving a surprise bill.
- Complete Our Work - Once you’ve signed off on the quote, your technician will get straight to work. They’ll also let you know how long the service will take, so you can have peace of mind about how long they’ll be working in your home.
- Make Sure You're Happy - No matter the job, each member of our team values efficiency and a job done right. To ensure that we lived up to your expectations, we’ll request feedback on our performance after the job is complete. We have a 100% satisfaction guarantee— and we mean it.

Why Choose Us?
As times get tough, other companies cut corners. But we decided to stay reliable for over 29 years. Call us and you'll get:
-
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.
-
With same-day service and 2-hour scheduling windows, you'll get service at a time that's convenient for you.
-
Since we constantly train our employees, you can be 100% confident that your job will be done right—the first time.