Same Day Appointments Often Available in Collin County, TX
C.A.S Air COnditioning & Heating, LLC Proudly Serving Collin County, TX

Heating & AC Services in Collin County

Responsive & Dependable Solutions for Local Homes & Businesses

At C.A.S Air Conditioning & Heating, LLC, our decades of industry experience informs every job we take on. Our team takes an honest and straightforward approach to your residential and commercial heating and air conditioning services. From new installations and replacements to repairs and preventative maintenance, we put our local customers at the center of everything we do. Our job is to help you keep your HVAC systems running efficiently and to provide you with the peace of mind of knowing that no matter what the season, you can rely on our team to ensure you are always comfortable in your home or business. Same-day appointments are even available when you need help fast. 

As a fully licensed, insured, and bonded company, we have provided communities throughout Collin County with high-quality HVAC services since 2002. We have built a solid reputation for results, and have numerous positive reviews, including five-star ratings on Yelp and many A-ratings on Angie‚Äôs List. You can trust our fully trained technicians to treat your property as if it where their own, providing you with the full scope of the job, all of your options, and a solid understanding of the work that will be done and how much it will cost. We will never surprise you with hidden fees and upcharges and our technicians do not work for commissions. 

We look forward to serving you. Call (972) 573-9484 to schedule your free estimate today.

I had an urgent need for an HVAC specialist to come an assess an HVAC system on a home. He responded immediately. Very personable, thorough in his evaluation, and took time to answer my long list of questions. I would recommend him to anyone.
- Andrew Z.
Preventative Maintenance Agreements
Save significant money and energy as you maximize the comfort of your home or business with a C.A.S. Preventative Maintenance Agreement.

We Go Above & Beyond

Unmatched Customer Service, Everytime
  • Extensive Experience Since 2002
  • Honesty Above All Else
  • Straightforward Approach
  • Customer Satisfaction Guaranteed
  • Locally Owned & Operated
  • Family-Owned & Operated

A Straightforward Approach to Your HVAC System

At C.A.S Air Conditioning & Heating, LLC, we understand how much you depend on your HVAC system, which is why we service all makes, models, and years of air conditioning and heating equipment. Whether you are ready to upgrade from an old, inefficient model, or you are looking to benefit from the latest technology in smart thermostats, you can trust that our team has the training and knowledge to complete the job in a timely fashion. 

We can also help you keep your equipment in top working order with maintenance plans designed to fit your needs. Whether you are concerned about the quality of your indoor air, or are interested in saving money on your monthly utility bills, regular maintenance can help your technician find and fix issues before they can develop into more costly repairs. Maintenance can also ensure that your AC and heater will be working when you need it and avoid unexpected breakdowns in the heat of summer or the dead of winter. 

To learn more, contact us and schedule your free estimate!

Our Customers Love US

See What They Are Saying
  • We called C.A.S air and heating and they came out not only the same day, but within a couple of hours. In minutes he had the problem diagnosed and had us back up and running. I cannot say enough about the professionalism of Chad. I would highly recommend!
    - Mike A.
What Sets Us Apart
  • Greater Celina Chamber of Commerce
  • Prosper Chamber of Commerce
  • Frisco Chamber of Commerce
  • McKinney Chamber Member
  • BBB
  • American Standard
Looking For
Service?
Look No further than C.A.s. Services for top-Notch Service and Superior Workmanship 
Contact Us Today
  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please enter your address.
  • Please make a selection.
  • Please enter a message.