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Comfort is on the Horizon

Casteel Partners with Knight AC & Heating

Knight and Casteel Partnership

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.

Knight and Casteel Partnership

Founded in 1971, Knight has delivered on its mission of professional service and high-quality installations for over forty-five 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 & Heating Company

Knight Air Conditioning and Heating Company was founded in 1971 with the vision of providing professional service and installation of heating and air conditioning systems for the home and business owners of northeast metropolitan Atlanta.Knight Air Conditioning & Heating Company

Knight has been able to retain and build on our customer base by being a company that promises what we will do; doing what we promise; and guaranteeing customer satisfaction.

This environment of steady growth has enabled us to attract and develop a team of quality employees, dedicated to the training and work ethic necessary to deliver a high standard of service to our customers. With this business philosophy we have seen our company grow year after year, with most of our growth coming by personal referral – one satisfied customer relating their satisfaction with our company to another friend, associate, or family member.

What This Means For You – Benefits & Services


  • Quality Installations:
    • Commercial Installations
    • Residential Projects
  • Service and Repairs
    • 24 Hour Emergency Service
    • Knowledgeable, Courteous Technicians
    • Prompt, Professional Service
    • Maintenance Plans Available


  • Residential Systems
  • Commercial Systems
  • Duct Systems
  • Zoning Systems
  • Programmable Thermostats
  • Air Cleaners
  • Humidifiers
  • Dehumidifiers

Special Offers

We will continue to accept all active Knight coupons as well as all Casteel Coupons! You can access these by visiting the coupons page. Please note that these may not be combined with any other offer and coupon must be presented at time of service. Please reach out for further details!

When you need quick, quality HVAC services, we’re your solution! Call us today (770) 852-8504 for fast, reliable HVAC services in your area!

Casteel is your trusted professional air conditioning, heating and plumbing service provider.

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