Del-Air Mechanical Contractors, Inc.

Our mission is to provide customers with excellent service, giving them quality products at competitive prices, while providing our employees a Christian, safe workplace from which they will succeed.

About Us

For over 35 years Del-Air has been serving the greater Knoxville and East Tennessee markets as an unlimited licensed mechanical contracting and service company. Del-Air Mechanical is a closely held family owned organization founded by Dwane Lay who continues to serve as our Chief Executive Officer. Dwane has guided the company through 35 years of continuous growth and prosperity from one service truck to over 150 full time employees, Del-Air always remains focused on our customer and employee needs. Our company has been built on a solid foundation of Honesty, Integrity, Commitment and Professionalism.

Del-Air is comprised of five main divisions that work as a close- knit operation providing Construction and HVAC Service to the following markets: Educational, Industrial, Retail, Office Building, Biotechnology and Manufacturing.

Read More!


Del-Air is one of the largest and most specialized Refrigeration, Heating, Ventilation & Air-Conditioning organizations in all of East Tennessee.



The construction division at Del-Air has the resources, capability and commitment to handle a wide range of mechanical projects.



Del-Air offers many services to the industrial / manufacturing market and continues to serve this industry with a full array of products and services