Furnaces heat air by burning a fuel such as oil, propane, or natural gas. Electric only systems are not actually considered furnaces, even though everyone calls them this. Most furnaces are also what are known as an air furnace because they use blowers to force the heated air into the home. These are the most common heating systems in the country.
Air is forced by the pressure caused by an air handler fan. The fan blower forces air past the heat exchanger and then pushes the heated air into the attached ducts. Ducts can be made of metal of flexible duct depending on their purpose and type of home, plus the location of the furnace. The heated air comes out of registers in the home. Registers can be in the floor, on the ceiling or on walls. All of these are dependent on each other. As such, it is important to make sure that the air furnace is regularly serviced.
Air flow regulation is normally checked and any leaky ducts are sealed or replaced as needed. Fan blades are cleaned and motors are lubricated. Air that leaks from the ducts of an air furnace equals dollars wasted. This is because of several reasons. For one thing, air never gets to where it is supposed to go. Return air ducts are just as important to seal. Improperly sealed return air ducts suck in cold air which reduces the efficiency of an air furnace. Leaks allow cold air in the home and warm air to escape from it. Once all leaks are sealed, air flow must be checked and regulated.
It may be a concern if the duct-work is too small for the home and its air furnace. Replacement of inadequate duct-work saves money in the long run.An air furnace must have regular air filter replacements. A clogged and dirty filter will restrict airflow and consequentially reduce efficiency. Filters can be removed and cleaned or replaced with disposables. It only takes a few minutes to complete this task, but it means a lot for the life of the system and comfort of the building’s occupants.