Same Day Appointments Often Available in Collin County, TX

McKinney HVAC Specialists 

Quality Repair & Installation from Trusted Professionals 

Even though we have relatively mild winters, we see long, hot, humid summers here in McKinney. July and August tend to be our hottest months, but we start seeing temperatures climbing as early as March and April. Homeowners rely on their HVAC systems to keep their homes comfortable year-round. 

Dealing with a heating or cooling problem can be stressful, especially if you're dealing with a system breakdown affecting your entire home or business. Finding a qualified professional to solve your problem should be the least of your worries. This is where we come in. 

We offer a wide range of HVAC services, including: 

  • HVAC repair
  • HVAC maintenance
  • HVAC installation
  • Air quality services 
  • Commercial HVAC services 

C.A.S Air Conditioning & Heating, LLC is a family-owned and operated business bringing McKinney, TX, top-quality HVAC services. Our technicians are EPA-certified and registered with the state, and our founder, Chad, has been in the industry for over 20 years. When you want to work with an HVAC company you can count on, turn to us.

Contact us online or call (972) 573-9484 for a free HVAC service estimate.

Keeping Your Home's HVAC System Running Smoothly

Maintaining a comfortable and healthy environment in your home year-round depends heavily on the performance of your HVAC system. Regular maintenance ensures optimal functioning and extends your system's lifespan, preventing unnecessary breakdowns and costly repairs. 

Furthermore, all repair issues should be dealt with as soon as they are detected. We know that this may be easier said than done. How do you know when to call for professional HVAC repair? A good rule of thumb is to call whenever you notice anything unusual or if your system's performance has dipped. 

Signs your system needs professional repair or maintenance include: 

  • Unusual noises
  • Weak airflow
  • Inconsistent temperatures
  • Higher energy bills
  • Frequent cycling

Our Commercial HVAC Services

In addition to residential systems, C.A.S Air Conditioning & Heating, LLC also provides commercial HVAC system maintenance and repair in McKinney. Commercial heating, cooling, and air quality systems differ from their residential counterparts in size, complexity, and maintenance requirements. We understand the unique demands of commercial HVAC systems and offer tailored solutions to keep your business's environment comfortable and energy-efficient.

To keep your commercial property's system running smoothly between maintenance visits, we encourage you to: 

  • Change system filters regularly, following manufacturer recommendations. 
  • Ensure the external components of your system are clear of debris to prevent airflow blockages.
  • Keep your thermostat settings consistent to avoid overloading the system.
  • Regularly inspect ventilation ducts and openings to ensure they are free from obstructions.

Your Satisfaction Is Our Priority 

At C.A.S Air Conditioning & Heating, LLC, we understand the importance of quality service and professionalism. When you work with us, you know you are working with a company that prioritizes customer service and will always treat you and your home with care and respect. We never pressure our customers to buy products or services they do not need. From heater repairs to AC maintenance, we get the job done. 

Contact our McKinney HVAC specialists to discuss your needs today. Reach out to us online or call (972) 573-9484.



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