‘Return? Supply? Upstairs or Down?’

This was no contest. Flex duct spider webs take the WTH voting

? David Small, Crossway Mechanical, Tomball, TX

The return plenum is part of the zoned system for the north side of the house. The four other ducts are for another system! Can you guess which is which?

Neither could the installer apparently.

When the ‘other’ system comes on, the negative pressure in the master suite is so great you can barely close the bedroom door!

Congratulations to David Small of Crossway Mechanical. He is the
December 2019 winner of our Photo-of-the-Month contest, as voted on by the subscribers to High-Performance HVAC Today magazine. He will receive a $50 gift card.

Photo-of-the-Year CONTEST VOTING OPENS DEC. 9, 2019

The January 2020 contest is a run-off of all the monthly winners from 2019. The winner, as voted on by you, will receive a FREE
registration to NCI’s Summit 2020. Learn more about the next
High-Performance Summit at gotsummit.com.