Understanding the Reality of Old Furnaces
Old Furnaces vs. New Furnaces We’ve all heard the old saying “they don’t make things like they used to.” In some instances there is a reason for this. Like the engine of an old car, old furnaces (20+ years) were simple systems build to last. These systems were not intensive to maintain. But like your old car, old furnaces are gas guzzlers with a fuel efficiency that is less than optimal. dryer vent in edmonton In recent years the government has created efficiency regulations for furnaces to reduce greenhouse gas emissions in Canada. As of December 31, 2009 the required AFUE rating for gas furnace is set at a minimum of 90 percent. AFUE stands for annual fuel utilization efficiency. It is a measure of a gas furnace’s efficiency in converting fuel into usable energy. A 20 or 25 year old furnace has an efficiency rating of about 60%. Instead of warming your house, 40% of the heat generated through combustion of natural gas goes up the flue and out the chimney. ...