C.A.S. Air Conditioning & Heating

C.A.S. Air Conditioning & Heating operates as a fully licensed, insured, and bonded HVAC contractor serving Collin County, Texas. Based in Plano, the company has provided heating and cooling services to communities throughout the region since 2002. The business currently holds a 5.0-star rating from 237 customer reviews, reflecting consistent service delivery across residential and commercial projects. C.A.S. Air Conditioning & Heating serves the cities of Allen, Prosper, Celina, Frisco, and McKinney, offering same-day appointments often available for urgent situations within the county.

The contractor distinguishes itself through an honest and straightforward approach to every job, whether it involves new system installations, replacements, or emergency repairs. As a comprehensive HVAC provider, the company handles air conditioning and heating systems, heat pump installations and repairs, ductwork, and both residential and commercial projects. The business maintains same-day availability for customers who need fast service, a practical benefit during North Texas extreme weather conditions.

Customer reviews frequently name specific technicians who handled situations ranging from same-day emergency calls on Sundays to rapid system replacements during peak summer heat. Reviewer Shawn Perry described technician Josh as knowledgeable and thorough, taking time to explain options. Reviewer Mn Gn detailed how the company installed an entirely new system within 48 hours during a July 2022 heat wave and later honored a warranty after lightning damage, with technician Josh Marcial handling both the original installation and compressor replacement. Reviewer David Lester noted a Sunday call resulted in a same-day callback and next-day appointment, with Josh resolving a clogged drain system.