Contact us TODAY to learn how to receive $20 OFF Repairs! 830-303-9397 or [email protected]


Air Conditioning and Heating Tune-up Services

The Super Service Tune-up

Why Tune-Up Your System?

  • Extend the life of your system.  Often adding up to 10 years!
  • Save you $100’s in unwanted repairs.
  • Save you $1,000’s on your electric bills.
  • AND Prevent:  Power surges, temperature swings, motor vibrations, and dirty systems

The Diamond Difference

At Diamond Air our technicians will perform a “Super Tune-Up and Professional Cleaning” on your heating or air conditioning unit. Instead of a simple check-up, these procedures take nearly one and a half hours to complete, making sure that your heating or air conditioning unit is running at its peak efficiency.

Schedule Your Super Service Today

For more comfort in your home and to schedule your “Super Tune-Up and Professional Cleaning” of your heating and air conditioning unit please call us at:



Diamond Air is proud to be staffed with the best certified repair technicians. Each specialist at Diamond Air has the experience and skills to maintain, diagnose, and correct problems throughout your heating system. Our on-going training allows our technicians to correctly adjust system controls to recommended settings and test the performance of the entire system using specialized tools and test equipment.
Diamond Air pledges to always provide:

  • The best trained technicians through ongoing training, including RSES (Refrigeration Service Engineers Society) and Service Excellence training, and continuous ways for our staff to provide you the utmost service
  • Fully insured and certified technicians, each and everyone having gone through background checks and drug testing
  • Properly stocked trucks so that we can make sure your system is up and running in no time
  • On-Time focus because we know your time is valuable
  • Up-Front pricing so that there are no surprises
  • One Year Parts and Labor warranty plus extended  warranty by manufacturer

Up Front Pricing

Up-Front pricing means no surprises. At Diamond Air, we work by the job, not by the hour. This means that when you are having problems with your system, you don’t have to worry about being charged an outrageous hourly rate while your system is being worked on. At Diamond Air, we will diagnose your unit and make recommendations for repairs before we start. All of our technicians have up-front pricing so that you will know the cost of repairs before we get started.


In choosing a heating and air conditioning system for your home, it’s important to choose a system that meets the comfort needs and safety of you and your family. At Diamond Air, we understand it can be a difficult process when deciding to replace or upgrade your heating and air conditioning equipment. Choosing the right contractor, the right equipment for your home, and the comfort that the equipment will perform as promised are just some of the things to consider when deciding on a new heating and air conditioning system.

At Diamond Air, we don’t cut corners. We understand that choosing a new heating and air conditioning system is one of the most important decisions you’ll make for you and your family’s comfort. We are proud to have earned the trust of hundreds of homeowners in the Guadalupe County area. Our “Peace of Mind” Guarantees are our written commitment to you that we will be around for a long time and continually serve you and your family.

Contact us to have one of our Comfort Advisors come to your home and go through all of your home comfort options. Our experienced Comfort Advisors throughly understand heating and air conditioning systems. They’ll spend the time to measure your home, go over all your home comfort needs, answer all of your questions, and show you all of your options so that you can choose the home comfort system that best meets you and your family’s needs.

Financing Available!

Financing is a great option when looking to purchase a home comfort system. Diamond Air offers low monthly payment plans so that you can leave your existing lines of credit open for other uses.

We offer:

  • 6 Months Same as Cash with a minimum monthly payment
  • 12 Months Same as Cash with a minimum monthly payment
  • Competitive Interest Rate with fixed payments and extended time periods


Call Us Today!