About Us

Whether you need a new HVAC system installed or require quick repairs, trust Cool Knight AC to keep you cool in the summer, and warm in the winter.

Contact Us Today
residential-ac-repair
Cool Knight AC & Heating

Who We Are

Cool Knight AC is a family-owned HVAC company based in the heart of San Marcos, TX! We're Guillermo Sr. and Guillermo Jr., a father-son duo on a mission to provide exceptional service with a personal touch. Our passion for delivering a better experience led us to create a business that focuses on quality, efficiency, and innovative solutions. With Guillermo Jr.'s fresh perspective and engineering background, paired with Guillermo Sr.'s extensive HVAC expertise, we're a dynamic team ready to tackle any heating or cooling challenge. We take pride in working closely with our clients, communicating openly, and sharing ideas to ensure we maximize the benefits for you. When we install a system, we treat it as if it were our own, caring for you like family. Whether you need HVAC services for your home or business, we've got you covered. Plus, we understand how unpredictable Texas weather can be, which is why we're available 24/7 to assist whenever you need it. Join our growing HVAC family and experience the friendly, reliable service that sets us apart.

View Our Work
residential-heating-cooling

What Sets us Apart

View Our Services

Family-Owned and Operated

We are proudly father and son-owned. We use exceptional materials and techniques and never cut corners.

Straight-Forward Pricing

We believe in no hidden fees and flexible financing. We always work around your budget and offer stress-free savings.

24/7 Availability

We are available day, night, and even on holidays. We promise same-day replacement even if it’s temporary so you never have to go without.

When we install a system, we treat it as if it were our own, caring for you like family.

We take pride in working closely with our clients, communicating openly, and sharing ideas to ensure we maximize the benefits for you.

Whether you need HVAC services for your home or business, we've got you covered. Plus, we understand how unpredictable Texas weather can be, which is why we're available 24/7 to assist whenever you need it. Join our growing HVAC family and experience the friendly, reliable service that sets us apart.

Cool Knight AC & Heating

Areas We Serve

  • San Marcos
  • New Braunfels
  • Round Rock
  • San Antonio
  • Austin
  • Kyle
  • Buda
  • Wimberley
  • Canyon Lake
  • Dripping Springs
  • Pflugerville
  • Lockhart
  • Seguin
  • & Surrounding Areas!

Beat The Summer Heat!

Stay cool this summer with our AC services. We can inspect your AC unit and prepare you for the summer.
Contact Cool Knight AC to get your free consultation, today!

Contact Us Today
residential-commercial-ac