About Us

Looking for reliable heating and AC contractors? Work with a team that has over five decades of experience. Call Comfort- Air Engineering and Primo Plumbing, Inc at (210) 494-1691 for immediate service.

Comfort- Air Engineering and Primo Plumbing, Inc is your San Antonio, TX air conditioning and plumbing company dedicated to delivering amazing service. Since our founding over 50 years ago, we have perfected the way we serve our customers. When you choose to work with us, you are treated to personal attention, top-rated workmanship, and true peace of mind.

Robert and John Freund founded Comfort- Air Engineering and Primo Plumbing, Inc in 1964. Both are mechanical engineers from UT. They wanted to design and build air conditioning systems for residential and commercial customers who lacked indoor cooling. The second generation took over the family business in 2001, and we continue to design and build mechanical systems for residential, commercial, and industrial customers.

Engineering your Comfort for Life!

Upfront Pricing: Know what you’ll pay before any work begins. This eliminates unpleasant surprises on your part!

Free Estimates Available: Get a free estimate on new system replacements, whether for heating, AC, or indoor air quality. This is a no-obligation estimate.


100% Satisfaction Guaranteed: We make every effort to provide you with the results you need. If you are not completely satisfied with our service, we will do everything possible to remedy the situation.

Over 50 Years in Business: We are an experienced team of indoor comfort specialists. No matter your problem, we’ve got a solution for you. After all, we’ve had over half a century to perfect our craft!

5-Star Rated Company: Your neighbors trust us as their go-to AC experts. We are proud to be an Angie’s List Super Service Award winner eight years in a row.

Family Owned & Operated: Our staff may number more than 200, but we operate with good old fashioned values. Every customer is treated to the personal attention they deserve. When you work with us, you’re part of the family!

Call Comfort- Air Engineering and Primo Plumbing, Inc today at (210) 494-1691 to schedule your next HVAC service in San Antonio, TX. Whether you need repair, replacement, or annual maintenance, you can expect quality craftsmanship from start to finish.

Check out more of our videos on our Youtube page!

financing available

  • Buy Now – Pay Over Time
  • convenient monthly payments
  • Quick Credit Decisions


  • Bi-annual/planned maintenance
  • Priority Service Call and Scheduling
  • Discounts on Parts & Labor

Why Choose Us

Engineering your comfort for life
  1. Excellent Customer Service & Experience
  2. High and Known Reputation - 5-Star Reviews
  3. Full Transparency - Upfront Pricing and Satisfaction Guarantee

At Our Company, customer satisfaction is our number one priority. Our highly regarded reputation, backed by five-star reviews, stands as a testament to our outstanding service. Plus, you can rest easy knowing you'll always be kept in the loop and have access to upfront, transparent pricing along with our satisfaction guarantee.