I have an older home that lacks any type of HVAC duct, however the walls are constructed of plaster which is horrible to tear down, but it crumbles and makes a substantial, dusty mess. Plus, the studs in the interior walls are turned sideways to receive more living space. This makes for especially tight walls, which won’t accommodate traditional HVAC duct. For a long time, my husband and I got by with various types of part furnaces and portable a/cs… All of us weren’t cheerful with this, but window a/cs look unquestionably horrible. They are aggravating to install and cumbersome to store when not in use. Instead of whole-home cooling, we were living with a couple of cold chilly rooms combined with a bunch of hot and sticky areas. During the winter, the part furnaces couldn’t keep up on entirely chilly evenings. We’d huddle under heated blankets and just about freeze to death. I also sad about safety complications and hated the ugly extensions cords stretched across the floor. I didn’t realize that there were whole-home solutions available that wouldn’t require a major renovation project. I finally did some research and came across two different options. There’s high velocity Heating, Ventilation plus A/C systems which use unquestionably tight diameter, flexible ducts. The ducts are able to be snaked into existing walls and fitted around obstacles such as electrical wires and plumbing pipes. The high velocity plan pushes air at a unquestionably high rate of speed to bring the room to a comfortable level abruptly. The other option is a ductless multi-break heat pump which links a single outdoor compressor with up to eight indoor air handlers. The ductless plan requires only a various inch-hole through exterior walls to mount each air handler. All of us chose the ductless heat pump, and the entire plan was up and running within a couple of afternoons with unquestionably little disruption to our home.