It smells like his gas grill when it first starts up ... area below and above the furnace for each 1,000 Btu of capacity for furnace ventilation air and proper venting practices. This is a 100,000 ...

The final major concern for converting to a high-efficiency furnace is how to manage the corrosive condensate water. For every 100,000 BTU/hr of heat input, a condensing gas furnace will make roughly ...