We have a mid efficiency Carrier unit. Looked into buying a high efficiency furnace as we were discussing an on-demand water heating system as well.
However, we would have to substantially change our ventilation for these units which unfortunately is not easy with our basement setup. The ONLY place to run a new exhaust tube would be through the existing rooftop chimney. That would entail replacing our furnace and hot water units at the same time.
Wasn't in the budget.
So we installed a second hot water tank with a recirculation pump instead and are keeping the furnace.
Our HVAC guy has assured us parts are not a problem for this 1991 Carrier unit and it has a lot of life in it yet and he highly recommended we just keep our existing furnace. I still expect at some point the main fan might be replaced.
Last edited by chesseroo; 01/19/15 03:36 PM.
