Mr. Chazoom and his company ADI Heating and Air, provided and installed six heat pump units, three propane furnaces and all the duct work for my home located in Laytonsville, Maryland. (My home is over 9,000 sq feet.) The quality of work was incredible. My architect did not provide a rough-in sketch for the duct work, therefore Mr. Chazoom provided me with his design of the system, which I accepted. The work was completed quickly and flawless per his proposal.