General Forum (977)

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Basic CAZ instructions may not provide the correct number.

When you measure the worst case depressurization of a CAZ are you measuring the pressure in the appliance room or the room above it?  When…

Started by Bud Poll

0 Dec 19, 2013

Gas meter "constant" charge.

Can anybody tell me what the 1.0920 "constant" charge is?

Started by Bob Blanchette

5 Dec 19, 2013
Reply by Eric Kjelshus

Basement weatherization and interior moisture management.

Please share your favorite products, ideas and links for managing basement moisture intrusion before weatherizing.  I'm not looking for inf…

Started by Kris Grube

16 Dec 17, 2013
Reply by Corey Johnson

Vampire load surprise - garage door openers

I've been on a tear of late to eliminate or minimize standby loads. This arises from data revealing that during spring and fall, when HVAC…

Started by Curt Kinder

90 Dec 15, 2013
Reply by Dennis Heidner

Water Water Everywhere

I am new to the business.  Went to a residence that has a mobile home that has an addition and metal roof.  This roof is about 8ft above th…

Started by James Murray

4 Dec 14, 2013
Reply by Dennis Heidner

Third party testing rqmt

I'm interested to know if the State you live in requires Blower door testing of the residential building envelope on new construction? Here…

Started by Eric Sperline

2 Dec 13, 2013
Reply by Eric Sperline

Energy Efficiency Federal Tax Credit extension beyond 2013?

Has anyone heard of any news with some hope that Federal Tax Credits for HVAC and insulation will be extended beyond Dec 31 2013?  Accordin…

Started by Trevor Frick

5 Dec 6, 2013
Reply by Dennis Heidner

Give the gift of building science!

Give your staff, colleagues and others on your list BPI's Building Science Principles (BSP) guide and certificate exam! 20% off the retail…

Started by Mike Kandel

0 Dec 5, 2013

Standard Wall Thermal Upgrade Analysis

The left is a standard wall, 3/4" siding, 1/2" sheathing, batt insulation and 1/2" sheetrock, if you remove the siding and apply 1-1/4" of…

Started by Tom Mallard

1 Dec 2, 2013
Reply by Bill Bradbury

Cycling Losses for Gas Furnaces

How much does cycling losses of a gas furnace reduce AFUE vs. Thermal Efficiency? Loss of efficiency for oversized AC units is well documen…

Started by Bob Blanchette

4 Nov 30, 2013
Reply by Jan E. Graveamker

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