My home has only one major closet, however what particularly smells is that the indoor air handler takes up half of it plus the water oil furnace takes up the other half, then i have been plotting on how to free up space.
I want to be able to store coats, shoes plus cleaning supplies there, and the indoor air handler can go when the HVAC dies.
I plan to have a ductless HVAC unit in my house. The indoor air handler will then be a wall mounted unit in every room of the house. I then can free up one half of the closet. When the water oil furnace goes I am going to choose a tankless water heater, and a tankless water oil furnace is about the size of a small suitcase plus fits onto the wall. I would free up near the ceiling plus the floor space. A tankless water oil furnace works better too, but you get moderate water on demand. Right now when I want to shower I need to start the water plus wait for it to heat up. With a tankless model. I get it instantly. There is no running out of moderate water either. In the Wintertide when I want to moderate up, I constantly have to rush so my wife gets a moderate shower. A tankless model also frees up that issue. It will be expensive plus require a licensed plumber to do the water oil furnace installation. I am more than ready though. I am sick plus sleepy of dealing with a pressing water oil furnace plus all sorts of complications. It is only more than nine years aged though. I feel I am going to be stuck with it for a while.