Like standard efficiency gas furnaces, oil-burning furnaces also feature a combustion chamber, heat exchanger and exhaust ...

Gas and oil furnaces burn fuel to provide heat for homes, and that presents a basic problem. Every combustion process ...

The chamber of the furnace is built out of a water heater tank which has been lined with a special cement that refracts heat. The furnace ... good for burning waste oil to achieve high heats.

By Lori Valigra, Bangor Daily News Staff Maine residences that have installed heat pumps are seeing up to 60 percent savings ...