Providing responsive, dependable and affordable air conditioning and heating solutions for homes and businesses

Expert installation of AC, heating and ventilation systems for residential and commercial properties.

Quick-response repair of air conditioning and heating systems. Emergency service available, too.

Get a free, no-obligation consultation and quote on replacing your air conditioning and heating system.

Save money and extend the life of your AC and heating system with regular maintenance from our service experts.

Full-service HVAC services for commercial operations, including maintenance, repair, replacement and installation.

AC and Heating Service Professionals

Finding a responsive, dependable and affordable air conditioning and heating service provider is easy when you call the HVAC experts at C.A.S. Air Conditioning & Heating, Prosper, Texas. Call our friendly service team when you have a question about installing a smart thermostat, repairs on your AC unit or replacing an entire HVAC system. We love providing superior customer service, and our experience shows. Fully licensed, insured and bonded, we have provided Prosper, Texas, and the surrounding communities with high-quality residential and commercial HVAC service since 2002. From the beginning, we have based our service on maintaining our reputation for being reliable, responsible and reasonable with every single job and customer. Servicing all makes, models and years of air conditioning and heating equipment, we are proud to have established our business on excellent customer service. Our objective for every job is your satisfaction. See what our customer have to say about us. Check out our five-star ratings on Yelp, and our A-ratings on Angie’s List.

We are an Accredited Business with Better Business Bureau with an A+ rating, too. Plus our management and employees support the local community and know the people we serve. We are a proud member of the chambers of commerce of Prospect, McKinney and Frisco. We are a company based on being reputable, reliable, responsible and reasonable for every customer and job. When you need a helping hand with service, repair, maintenance or installation with your residential or commercial air conditioning and heating system, call the HVAC experts who are ready to help you now—C.A.S. Air Conditioning and Heating.


Save significant money and energy as you maximize the comfort of your home or business with a C.A.S. Preventative Maintenance Agreement.

AC and Heating Service Professionals

  • Expert service technicians with advanced HVAC training
  • Extensive experience since 2002
  • Friendly customer service
  • Top ratings, including an A+ from BBB




Take advantage of significant savings with our special coupon deals.


Financing options Do you need an AC and heating system but think you can't afford it now?
Ask about our flexible financing options.


Financing is provided with approved credit by Wells Fargo Financial National Bank,
an Equal Housing Lender. Ask for details.


We provide HVAC services to the North Central Texas communities of: Allen, Anna, The Colony, Fairview, Frisco, McKinney, Plano, Prosper, Celina and surrounding communities.