High Efficiency Furnace Makeup Air

However the overall efficiency of the house is.

High efficiency furnace makeup air. Different classes of filters are available depending on your needs. High efficiency furnaces offer 90 or more afue. Due to high efficiency furnaceshaving their own fresh air intake no air is drawn from inside your home. These filters need to be changed regularly in order to work effectively.

Bringing in fresh air for the entire house through the return air ducting on the furnace may help prevent a common problem when people upgrade their old heating appliances to high efficiency units. 72 000 btu 95 afue natural liquid propane gas mobile home forced hot air down flow furnace today you ll find our high efficiency gas today you ll find our high efficiency gas furnaces in more manufactured homes than ever before. It uses the surrounding air that is the air inside your attic or crawlspace for combustion. Department of energy a defining feature of high efficiency furnaces is sealed combustion a process by which outdoor makeup air is piped directly into the burner.

In this type of furnace 20 of the energy produced by natural gas is expelled as exhaust. To get a sense of what this design entails first consider an 80 furnace. In high efficiency furnaces the combustion air is generally piped in directly from the outside straight into the combustion chamber. According to the u s.

Most condensing furnaces and some conventional furnaces use high efficiency air filtration media to improve indoor air quality. If your furnace lives inside a sealed attic or crawlspace high efficiency furnaces use a design that s well suited for those kinds of spaces. The efficiency of a 90 afue condensing furnace is not affected by obtaining the combustion air needed from the outside of the house. A standard efficiency furnace provides 80 annual fuel utilization efficiency afue.

Very few people realize that a certain volume of air is required for proper combustion of the furnace and gas water heater for that matter and not many contractors pay attention to this simple code requirement. Since high efficiency furnaces draw air directly from outside the furnace itself does not require a fresh air intake in order to replace inside air that otherwise would have been drawn from the room the furnace is located in.