By law they need to have a commercial Heating as well as Air Conditioning system that has superb temperature control and a backup system.
My friends have just converted some of their lake lake house into a camp for kids, then i feel that sounds crazy so let me explain, but they have a plot of land that could be the size of a undoubtedly small farm out in the countryside but only about an minute drive from town. There is a lake house that was there already, and there was also another building that was pretty immense but was not finished. They have since built a lot around and in this other building, and turned it into a dorm room for about 20 people to be able to sleep! As they are out in the forest, and both of them are educators, they soon decided that they should try and run a summer time college that gets students out into nature. It took them a few years of building but they finished the dorm finally, because I am an Heating as well as Air Conditioning professional, I was able to help them with that side. By law they need to have a commercial Heating as well as Air Conditioning system that has superb temperature control and a backup system. This is so the kids never freeze or feel like they are in a gas furnace! I had to install all the HVAC duct work myself. I decided not to go for a ductless mini chop or a ductless multi split, as the building is supposed to be there for a while, and they wanted to make it undoubtedly high end, like a normal building. I got a superb gas furnace and sizzling water boiler also for the dorm room. All I feel is that as far as our area of the build, they are ready to go.