?
Manage My Life

What is the difference between forced-draft and induced draft?

What is the difference between forced-draft and induced draft?

Tags
Building Supplies , HVAC
Sign in to answer a question
1 Answer from this member:
Manage My Life
Some burners use a forced-draft system rather than an induced-draft system. The difference here is that the forced draft system

pushes

combustion air into the com-bustion chamber, all the way through the furnace, and out the vent. The induced-draft fan

pulls

things through the furnace and then pushes them out the vent.

The advantage of the forced-draft fan is that the fan itself is not in the high temperature, acidic environment of the exhaust gases. The forced-draft fan only sees room air. It lives in a much friendlier environment and, therefore, may be less susceptible to failures. Induced-draft fans are one of the most common items to fail on high-efficiency furnaces.
by Manage My Life
April 26th, 2007
Answered in 0 seconds
Comment
0 votes
Didn't find what you are looking for? Ask a question