High Efficiency Furnace Makeup Air

Due to high efficiency furnaceshaving their own fresh air intake no air is drawn from inside your home.

High efficiency furnace makeup air.

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. In high efficiency furnaces the combustion air is generally piped in directly from the outside straight into the combustion chamber.

Different classes of filters are available depending on your needs. These days 95 afue is a common rating among new gas powered furnaces. 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. 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.

To get a sense of what this design entails first consider an 80 furnace. 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. 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. These filters need to be changed regularly in order to work effectively.

A standard efficiency furnace provides 80 annual fuel utilization efficiency afue. Most condensing furnaces and some conventional furnaces use high efficiency air filtration media to improve indoor air quality. High efficiency furnaces offer 90 or more afue. According to the u s.

That s because more families are discovering only miller furnaces offer such incredible efficiency and comfort plus lots of other value added features. However the overall efficiency of the house is.