ADI

ADI Heating & Air Conditioning has served Montgomery County for decades, working from Olney and Gaithersburg for residential and commercial clients. It installs and services air conditioners, furnaces, boilers, heat pumps and ductless systems, along with ductwork, radiators, radiant floors, ventilation, humidifiers and air filtration. A review describes two high-end dual fuel systems installed. NATE-certified technicians complete up to 40 hours of training each year. 24/7 emergency service is available, and financing through OPTIMUS, seasonal promotions and comprehensive maintenance plans are offered. The menu also covers multi-family air conditioning, oil services, radiant floor service, HRV and ERV ventilation, UV air purifiers and whole house dehumidifiers, and seasonal promotions are posted. Rated 4.9 from 57 Google reviews, 55 of them five stars.