I'm working on designing a small cabin that is slab on grade with no garage and I need to place the air handler (with electric furnace) and the electric water heater somewhere. There are all sorts of codes about gas units since they use combustion, and require venting, etc. But I haven't been able to get a clear answer on what the requirements of such a utility closet would be, often with conflicting information in online searches.
I'm thinking it would be most economical to build one utility closet for the electric water heater and electric air handler/furnace and put them in there together if permitted. I know you can't do that for gas, but with both appliances electric...? Does anyone know if this is allowed? The code is IRC 2012 with no local modifications.