Mini-Split Ductless Heat Pumps from M & S Heating & Air LLC Help you Manage Warm Summers and Cold Winters in Mechanicsville Whether you are looking for comfort boost in one room, or up to four different rooms, M & S Heating & Air LLC in Mechanicsville has a mini-split heat pump to meet your needs. Our mini-split heat pumps from Lennox® supply highly efficient and very quiet performance season after season. Their ductless design erases the possibility of difficult installation problems or high-priced modifications down the road. What’s more, their efficient, all-in-one heating and cooling system makes sure your home is comfortable season after season. Find out more about our mini-split heat pump offering. Whether you want service for your mini-split heat pump or need a new unit, M & S Heating & Air LLC in Mechanicsville is ready to serve you. Call us at 301-363-4699 or set up an appointment with us using our online scheduler. * SEER, or Seasonal Energy Efficiency Ratio, measures the cooling efficiency of your air conditioner or heat pump. A higher SEER rating means greater energy efficiency and more savings for you and the environment. ** HSPF, or Heating Seasonal Performance Factor, measures the heating efficiency of your heat pump. A higher HSPF rating means greater energy efficiency, more savings and is better for the environment.