My building has 20 yeat old rooftop units that have become expensive to run. I am thinking about replacing them. I have 2-25 ton and 1-30 ton unit. It is a three story building with 33,00 SF. They are electric heat and then the individual VAV boxes provide additional heat.
We are in MD. Should my installer be thinking heat pump to lower costs? He is recommending carrier. ANybody have any thoughts on the carrier units?
[Edited by kold in kensington on 01-12-2006 at 11:00 AM]