CAN I JUST VENT HERE?

 
Q: Why is it that when we terminate two furnace vents out of the same wall we have to keep the vents a minimum of 36 inches away from each other? In this instance, I am referring to two furnaces. Why can’t we vent them right beside each other?
~Kevin Tychkowsky, KT Mechanical Ltd.

A: Thanks for your question, Kevin. In this application, the first thing we need to know is if the vent termination is for two twinned furnaces or two individual furnaces. Twinned furnaces share common ductwork and a single thermostat and operate together. This is done when a larger heat output/airflow requirement exists. For twinned furnaces you are required to have the vent terminations next to each other in a very specific configuration. Two separate furnaces don’t necessarily operate at the same time so vent recirculation is an issue. To minimize any chance of recirculation we require that there be at least 36 inches between vent terminations. For guidelines see any of our current high-efficiency installation instructions. Of course, with all technical questions I suggest you speak with your local Carrier® or Bryant® service manager. Hope this helps!

For venting here, Kevin is going to get some FREE STUFF delivered right to his door! Do you want to try to stump me? Then send me your question, and if I use it here, you’ll get some FREE STUFF of your own!

James.Flynn@totaline.com

Jim Flynn
Totaline Marketing and Training Manager

JIM'S TIPS

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