If you’re like any other consumer in St. Charles County shopping for a boiler or furnace, you may have noticed the acronym AFUE. This information is quite relevant when it comes to choosing an energy efficient heating system. A heating and air conditioning contractor, renowned for providing St. Charles homeowners with more than 40 + years of service excellence, highlights six facts you should know about the AFUE.
AFUE is the acronym for annual fuel utilization efficiency. This number calculates a boiler or furnace’s output versus the ratio of its total energy consumption.
A boiler or furnace with 90 percent AFUE translates into - 90 percent transforms into heat energy while the other 10 percent of the fuel travels via vents and the chimney, never turning into energy.
When shopping for a furnace or boiler, check the minimum AFUE requirements.
The Department of Energy and the Environmental Protection Agency regulates minimum AFUE standards for all types of heating systems. For instance, a gas-fueled steam boiler is required to have a 75 percent AFUE and a fossil fueled boiler must have a minimum of 80 percent AFUE.
As for heating systems, without flue loss an all electric boiler and furnace generates an AFUE rating ranging from 95% to 100%.
Older heating systems have a very low AFUE ratio, between 68 to 72 percent.
However, AFUE is not the only determinant, which represents a heating system’s efficiency. Sealed combustion, flue pipe diameter, as well as an electronic igniter are three other features, which influence a heating system’s efficiency.
Whether you need expert advice on choosing an efficient heating system, maintenance on your existing system or a heating contractor in St. Charles to install a new unit, Hoffmann Brothers is your full service HVAC contractor.