About M & S Heating & Air LLC Professional, knowledgeable and customer-friendly heating and cooling service. That’s what M & S Heating & Air LLC has offered homes in Mechanicsville since 2012. It’s a source of pride for us. Our dedication to quality is at the heart of the work our fully trained staff does for you and your home. We’re committed to getting the job done quickly and correctly 100 percent of the time. As a Dave Lennox Premier Dealer, you can count on M & S Heating & Air LLC to offer innovative, high-end Lennox® HVAC products that run more efficiently and more reliably than the competition. We have the best equipment to offer for a fair price. And our technicians are up to date on the latest equipment and repair technology so your home will be back to peak comfort in no time. With energy efficiency and your budget in mind, the team at M & S Heating & Air LLC makes it our goal to exceed your expectations. We are a family owned and operated company that believes in putting our customers first and work every day to live up to our slogan that “Honesty is our Best Policy.” Your whole-home comfort is our priority. That’s why we offer seven-days-a-week service on all makes and models of heating and cooling equipment (minus the five major holidays). Find out what so many others in Mechanicsville already know and let M & S Heating & Air LLC redefine what heating and cooling service can mean to you. Give us a call at 301-363-4699 or schedule an appointment online to learn more.