Best Practices (33)

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what is more efficient a boiler or hw ?

recently a customer asked me what will be more efficient equipment for a hotel. right now its working with 3 hw, two 2000btu input and one…

Started by David martinez

1 Feb 3, 2014
Reply by Sean Lintow Sr

Is my HVAC Guy correct? 2 systems instead of 1 system with Dampers

I'll soon be working on converting a second floor of a residential building that was never finished and is being used as an attic for the…

Started by scottscontracting

54 Nov 9, 2013
Reply by Curt Kinder

Sizing A Ground Heat Exchanger for Installation

Ground Heat Exchanger (GHE) is the key to the efficiency of a Ground Source Heat Pump (GSHP). However, GHE is not standardized as other par…

Started by Perry Ning

1 Sep 14, 2013
Reply by Bob Blanchette

2nd Edition! Home Performance Diagnostics: the Guide to Advanced Testing

Now in its 2nd Edition, Home Performance Diagnostics includes over 40 diagnostic tests in 220 pages, with 180 full-color photos walking you…

Started by Corbett Lunsford

0 Jun 7, 2013

Boxing and Insulating Around Non-ICAT Cans

I have a client with 16) 4" halogen recessed light fixtures in the attic. I'd like to cover the cans with air tight, fire rated boxes. The…

Started by Bachi Brunato

9 May 31, 2013
Reply by peter chang

air sealing sprinklers

does anyone have experience air sealing fire sprinklers?   Per California code, all new  homes must have fire sprinklers.... think 30 to 40…

Started by mike keesee

8 May 28, 2013
Reply by Ed Minch

Misting Aeroseal in Pressurized Home = Amazing Air Sealing Innovation

As a training program manager for a non-profit, I am often too busy managing my program to catch all of the latest and coolest innovations…

Started by George Kopf

0 May 24, 2013

Backdraft Detectors - Are they reliable?

On a recent Quality Assurance site visit, I found a gas-fired water heater with a "Vent-rite Spill Alarm" installed on the flue. The contr…

Started by Nick Helmholdt

2 May 10, 2013
Reply by Jim Peck

Frozen Pipes on Interior Wall

On a recent quality assurance site inspection I found a situation where pipes froze and burst within an interior wall. Here is the story:…

Started by Nick Helmholdt

7 Mar 14, 2013
Reply by Michael Jensen

Appraisal Institute Updated the Residential Green and Energy Efficient Addendum

The changes made to the Addendum will enhance the reporting of the green and energy features.  It is written for homeowners, builders, appr…

Started by Sandra K. Adomatis, SRA

1 Mar 12, 2013
Reply by Guy DuBois

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Stack/wind pressure and flow networks.

Started by Daniel James Grundy in Training. Last reply by Brennan Less 1 hour ago. 3 Replies

BDT with vermiculite in hollow CMU walls?

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Strange IR Image

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Brennan Less replied to Daniel James Grundy's discussion Stack/wind pressure and flow networks.
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Energy Auditing Equipment for Sale, Trade or to Purchase

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