Not if they are also gas furnaces
. What about combustion air?
Assumptions The following assumptions were made when computing the primary energy consumed by the CCHP and natural gas furnace
Savings from a higher-efficiency Furnace Gas Furnace
Annual savings projected for a 2,500-square-foot by replacing a less efficient gas furnace
with a new 90-percent efficient gas unit, assuming a price of 42.5 cents per cubic meter of natural gas.
Yes, older oil furnaces can have a much lower efficiency than today's natural gas furnaces
or even today's new oil furnaces.
Amana has so much confidence in the quality and performance of these products that they protect each with a lifetime limited warranty, If the compressor on the Amana[R] RSG Air Conditioner or the heat exchanger on the Amana[R] GUVA Gas Furnace
fails while in the possession of the original owner, Amana will replace the entire air conditioner or furnace for free.
The Dave Lennox Signature Collection's G61V gas furnace
line features SilentComfort technology to reduce operating noise.
"The amount of gas furnace
fuel that we are saving is very substantial."
The petty officer and his family died after turning on their gas furnace
the first night temperatures dropped.
This company offers a complete line of fabricated replacement batch retorts for American Gas Furnace
rotary furnaces and for furnaces such as those manufactured by Surface Combustion, AGE, Pacific Scientific, and Selas.
HOW MUCH could you save on your energy bill by swapping the electric heater for a gas furnace
? What difference would it make if you took the train instead of the car?