As furnaces age they often lose their efficiently.
Old oil furnace efficiency.
In this case the best way to reduce your energy bills is with a high efficiency furnace.
Energy gov says old heating systems may be operating at 56 70 afue.
Replacing the old furnace in your central heating system with a new more efficient model can offset volatile energy prices.
Consequently a loss in efficiency means your heating bills may go up.
Money aside today s furnaces pollute less and boost comfort by.
Although gas furnaces are more efficient than oil furnaces that efficiency comes at a price gas units are typically priced 10 to 25 higher than the same size oil furnace.
Remeber the extra money you re spending every month on a less efficient furnace could be going toward the cost of your new more efficient system.
We purchased a house with what appeared to be a relatively well maintained oil furnace about 30 years old installed in 1984.
We don t have any records of annual oil usage or any way to find that out.
From what i can tell it was originally 80 afue.
Upgrading your furnace or boiler from 56 to 90 efficiency in an average cold climate house will save 1 5 tons of carbon dioxide emissions each year if you heat with gas or 2 5 tons if you heat with oil.
Old low efficiency furnaces with natural draft flue gas continuous pilot light thick walled heat exchangers may provide efficiencies ranging from 56 to 70.