About Us

Ferguson Heating & Air Conditioning - About Us

DH Johnston Services has been providing customers with dependable service throughout North Carolina for over 25 years. We are a trustworthy and reliable dealer with a focus in Commercial and Residential Heating, Cooling, and Ventilation, and holding steady at the forefront of the industry. Licensed with H1, 2, and 3, we have the knowledge to assure you that your home unit is performing at its highest capacity.

All of our employees receive the essential factory training to provide you with the most accurate and up to date information for your home heating and cooling needs.  With our continued training we also have the capability to provide a vast amount of services from the installation of blown attic insulation to retrofitting replacement gas and heat systems for existing homes.

Whether it’s installing a new heating and cooling system in your newly constructed house, changing out an existing system, ductwork or airflow repairs, large or small commercial work, or service or repair to your existing system, call DH Johnston Services’ most experienced heating and cooling contractors.

We proudly serve the following areas:
Charlotte, Gastonia, Shelby, Mooresville, Mount Holly, Belmont, Denver, Huntersville, Bessemer City and others.



DH Johnston Services | P.O. Box 551112 | Gastonia, NC 28055
P: (704) 913-0705 | E: hans.dhjservices@yahoo.com | License #14319
© Copyright 2019 DH Johnston Services. All Rights Reserved.