Casteel Heating, Cooling, Plumbing, and Electrical Merges with Knight Air Conditioning and Heating

Knight Air Conditioning and Heating, the trusted name in home comfort for Gwinnett County and surrounding areas since 1971, has merged with locally owned and operated Casteel Heating, Cooling, Plumbing, and Electrical. The new partnership will provide additional offerings and benefits to homeowners in the East Atlanta area.

Founded in 1971, Knight has delivered on its mission of professional service and high-quality installations for over forty years. As part of the Casteel family, the company will now be able to expand on its mission of high-quality service with added 24-hour availability, electrical and plumbing, in addition to exceptional air conditioning, and heating.

“Our reputation for excellence is a community tradition,” says Knight co-owner Tim Loudermilk. Joel Aderhold, co-owner of Knight, adds, “We’re excited to offer our neighbors expanded service and support as part of the Casteel family.”

“This partnership will benefit our customers, as well as both organizations,” comments Jim Rutherford, Operations Manager for Casteel. “We look forward to growing with the outstanding team at Knight.”

About Knight Air Conditioning and Heating Company

Based in Lawrenceville, GA, Knight Air Conditioning, and Heating Company is a local leader in outstanding air conditioning and heating. Founded in 1971, Knight’s reputation for professional, high-quality service is well-reviewed and trusted by homeowners throughout Gwinnett County and beyond. Learn more about Knight’s customer-focused approach at

About Casteel Heating, Cooling, Plumbing and Electrical

From extensively trained technicians to lightning-fast response times and dependable service, Casteel goes the extra mile to deliver amazing care for homeowners. Locally owned and operated for over 30 years, Casteel provides 24/7 plumbing, electrical, heating and cooling services that Atlanta-area customers depend on season after season. Learn more about Casteel at


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