Most noncondensing residential furnaces use natural draft to drive the combustion process. Even 80%-AFUE furnaces with combustion blowers are natural-draft furnaces. The combustion blower in an 80% ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. It represents a very historic boiler ...

Rushed furnace installations routinely crack heat exchangers, clog gas valves, and create CO risks long before the first ...

My house is heated with a gas-fired furnace. How can I seal the house's ducts to prevent carbon monoxide (CO) leakage? First, let's clarify this. Ducts carry heated or cooled air. Under normal ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. overall - from catalog card: 5 in x 4 ...

Q. My question concerns the exhaust/intake pipe for our forced air oil furnace. The exhaust pipe is inside the intake pipe. Both are mounted outside the house about one foot above ground level. We are ...