Collin Co. Mechanical, Air & Heat can offer you the newest products from the world’s leading HVAC manufacturers. Installing a high quality air conditioning unit can significantly improve the air quality in your home or office. You can save your kids from many allergies and improve their health condition. However, even the most advanced HVAC systems will need regular maintenance. We can take care of your HVAC service, repair and maintenance needs. We assure you that we have the expertise to handle any given HVAC job in a prompt and efficient manner.