Mini-Split Ductless Heat Pumps from Custom Air Systems Inc Help you Manage Warm Summers and Cold Winters in Port St. Lucie Whether you are looking for comfort boost in one room, or up to four different rooms, Custom Air Systems Inc in Port St. Lucie has a mini-split heat pump to meet your needs. Our mini-split heat pumps from Lennox® supply suberbly efficient and super quiet performance year after year. Their ductless design erases the possibility of difficult installation problems or costly modifications in the future. What’s more, their efficient, all-in-one heating and cooling system makes sure your home is comfortable all year long. Find out more about our mini-split heat pump offering. If you want service for your mini-split heat pump or need a new unit, Custom Air Systems Inc in Port St. Lucie is ready to serve you. Call us at 772-247-2283 or schedule 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.