To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.

DEP Boiler Chimney Size Methodology/Calculation


I have a situation where our chimney flue has been sized and installed per ASHRAE standards.

However, we can't get sign-off since the PE signing the drawings says our chimney is too small and there's insufficient draft. He says he's using the DEP methodology for chimney sizing. I can't find this anywhere. Can anyone point me in the right direction?

This is in NYC and the boilers/chimney have been working like a charm...


  • TitaniumHammerTitaniumHammer Posts: 3Member
    DEP chimney sizing

    Since I don't know the specifics of your chimney and combustion fuel all I can tell you is it looks like NYC uses a Department of Environmental Protection code. Do a google search for

    Department of environmental protection chimney sizing
Sign In or Register to comment.


It looks like you're new here. If you want to get involved, click one of these buttons!