Question: Is there any code prohibiting me from mounting the outdoor section of a mini split way up high, like at the 2nd floor level? I know it will make servicing a pain but hear me out. The reason I'm asking is because I live in a historic district which is governed by the Historic District...

We bought as 2003 built two story in MN 1.5 yrs ago. It had the original undersized furnace and ac. The winter was cold and the summer hot. We bought/had installed a new furnace and ac (3 ton). So far this summer our top floor is even warmer than last year. Thermostat on the main floor set to...

My neighbour installed a AC recently, I found that the outdoor unit is mounted on the brick wall but not the concrete base. Somebody says this is not good. Anyone can tell me why? Thanks!