Technicians from Markool Heating & Cooling are highly experienced with HVAC in Clarksburg, MD and ready to work on all makes and models of systems. Our locally owned and operated company offers great customer service. We strive to develop lasting and trusting relationships with all of our customers. We have more than 20 years of experience in the heating and cooling industry and keep our technicians current with advances in the field. Our NATE-certified technicians are friendly and professional, and they’ll give each job their full attention from start to end. We’re proud to be a Carrier Factory Authorized Dealer. Customer satisfaction is always a top priority for us.