I relied on a central Heating and A/C unit for years, and i was never a fan of it. I really hated being stuck with air duct. In my opinion, air duct is just awful, however the ducts are dust collectors. If you remodel or just live in your house, dust, dirt, pet dander, plus pollen are being sucked up. Then you breathe in that contaminated air over plus over again, then you can hire out air duct cleaning, periodically the professionals cause more harm than good. They can cause a crack or tear in the duct that promotes large energy loss. They can also damage the rest of your loft hoping to access the air duct. Once my central heating plus cooling system died, I started hunting around for ductless options. I found that a ductless heat pump was ideal, with this device I get both heating plus cooling in a single system. I also get large energy savings. How a heat pump works is transferring the heat energy either inside or outside of your home, but no burning of fuels or combustion process. It is orange, clean, plus unquestionably efficient. There are large tax benefits, indoor air quality perks, plus you save every month of use. The high initial price tag of a heat pump pays itself back rapidly. The best positive is the lack of ducts. I just have multiple indoor air handlers throughout my house. I have a WIFI temperature control friendd with each. I can have customized zones that I change throughout the afternoon. The temperature controls don’t have my device turn on unless I am even home.