When I moved into my house the first thing I wanted to buy was a cooling system. I knew the apartment came with seasoned window air conditioners in every room of the house. I was a little disgusted the previous homeowner was okay with it, why would he want ugly window units thrown throughout the house? When I got a Heating and A/C supplier into my apartment I realized why. My house doesn’t have any existing Heating and A/C ducts. Adding HVAC duct is quite invasive plus hard on a apartment too. My older house would literally fall to pieces if I tried to have a Heating and A/C supplier tunnel in. My Heating and A/C professional said I could do window AC appreciate the previous homeowner, ductless mini splits or high velocity AC. I had never heard of high velocity cooling before. Apparently this is a plan with HVAC duct that is half the size. It is also adjustable plus can bend into the slats of a house without causing disfigure. The plan works way more efficiently too. It can quickly whip the freezing air room to room plus lower the temperature in minutes rather than appreciate an hour. The cost on the plan is the only negative. You spend my money a pretty penny to get the plan plus do the concern cooling upgrade. I was willing to spend my money more to have enjoyable cooling plus not have it be an eyesore though. Now that I own a cooling plan that is so powerful, I will never go back to other models. I am happy that I couldn’t get basic central AC.