I have been using ductless HVAC system for about 5 years now, and I have to tell you that I will never go back to HVAC duct and central HVAC system! It did cost myself and others a giant dollar to get this ductless HVAC system set up. But I did it! I had to go and buy 3 ductless mini split cooling systems, which was a unquestionably costly purchase. Then, following getting the ductless mini split cooling systems, I had to call the local HVAC system corporation for them to send out a certified heat and air conditioning system specialist to come out to convert all 3 ductless mini split cooling systems into ductless HVAC system units! That was a whole other expense all together. But let myself and others tell you, even with the thoUSAnds and thoUSAnds of dollars I spent, I have made back most of that money in these last 5 years just by the energy savings on my biweekly electric bill! It all adds up. By next year, this whole ductless heat and air conditioning system set up I have done will have paid for itself with all the energy savings. So it was a good investment that gave myself and others my money back eventually. Also the HVAC system is much smoother feeling and I do not have to always call for Heating and A/C maintenance or Heating and A/C tune ups and check ups like you do have to do with central HVAC system plan units! This ductless HVAC system is the best! I’m never going back to central Heating and A/C!