Presidential Heating & Air Conditioning Inc. in Gaithersburg was founded in 1982 by owner and President, Wendell Nixon. As a direct result of our dedication to quality—products, people, service and installation—Presidential has built our foundation on customer loyalty and trust. With a complete satisfaction guarantee, the Presidential team won’t rest until the job is done and their customers are completely happy with their work. Whether you own a commercial or residential building, or need installation or service, we are committed to providing each of our clients with our expertise regarding the most environmentally friendly systems around.