Mini-Split Ductless Heat Pumps from Twin Air LLC Help you Manage Warm Summers and Cold Winters in Manassas Twin Air LLC in Manassas offers a mini-split heat pump to satisfy your home comfort needs, no matter if you need heating and cooling to one room or up to four rooms. You can look forward to ultraquiet, efficient performance from our durable Lennox® mini-split heat pumps. With the easy-to-install, ductless design, these mini-split heat pumps also erase the potential for expensive modifications later on. Our systems provide month after month of efficient comfort in a streamlined package. Check them out. Twin Air LLC in Manassas wants to help you find the right mini-split heat pump for your home or our specialists can service your existing mini-split heat pump. Schedule an appointment with us online , or call us at 703-666-8907. * 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.