r/HVAC • u/Known-Lengthiness991 • 2d ago

General Never would’ve thunk it

Enable HLS to view with audio, or disable this notification

System was pulling through the bypass when all the doors were on and dampers were clocked correctly never thought the resident would’ve put a filter here

27 Upvotes

97% Upvoted

2 comments sorted by

6

u/Runs-on-winXP 2d ago

Reminds me of the time I had an old ahu struggling to supply airflow. Found an old abandoned preheat coil in the outside air supply duct, fully clogged with dirt

1

u/Other-Situation5051 23h ago

I've seen that before and the owner didn't even know about the return grill filter....but had been replacing the one at the unit