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First Law of Themodynamics

I have been thinking alot about this 1st Law, where energy is neither created or destroyed and i am having difficulty understanding this. A…

Started by Jim Tenhundfeld in General Forum

3 Aug 9, 2012
Reply by Ed Voytovich

How does your utility use smart meter technology?

A quick poll to see how widespread smart meter technology has become. What type of power meter do you have, and how does your utility use t…

Started by Bob Blanchette in General Forum

5 Aug 9, 2012
Reply by Rodney Fox

Controversial? The Rebound Effect?

Since more efficient (and cheaper) energy will also lead to faster economic growth, it's suspected that improvements in energy efficiency m…

Started by Tom DelConte in General Forum

10 Aug 9, 2012
Reply by Richard Scott Mills

BPI Releases Initial Results of Quality Assurance Procedures for Proctors and Test Centers

The Building Performance Institute, Inc. (BPI) is pleased to release the initial results of its Quality Assurance procedures for proctors a…

Started by Mike Kandel in General Forum

1 Aug 8, 2012
Reply by Tom Conlon

Installing additional supply runs from the main trunk.

Here is a new area for me: The wisdom (or lack thereof) of adding supply duct runs in order to improve airflow to rooms that are uncomforta…

Started by Patrick Michaelyan in General Forum

16 Aug 8, 2012
Reply by Patrick Michaelyan

Cost of foam installation

I'm looking for some foam installation prices. I know each company is different and have there own overhead and all, and I also realize the…

Started by Paul Lasicki in General Forum

4 Aug 7, 2012
Reply by Paul Lasicki

Thoughts on advertising through Angie's List and\or Service Magic.

Hello all my fellow champions of better buildings. I am strongly considering dropping some significant cash to begin advertising on Angie'…

Started by Patrick Michaelyan in General Forum

10 Aug 6, 2012
Reply by John Redmond

BPI Announces Quality Assurance Field Inspection Standard

The Building Performance Institute, Inc. (BPI) is pleased to announce that its new Standard for Residential Building Quality Assurance Rela…

Started by Mike Kandel in General Forum

0 Aug 3, 2012

portable AC units--EdgeStar AP12000

First time I've come across these units-- vents with 5" hose thru window , exhaust only ! located in 2nd fl bath of 1.5 srory with can lig…

Started by ken schaal in General Forum

8 Aug 2, 2012
Reply by Bob Blanchette

Apply Now to Take the Home Energy Professional Pilot Exams

Due to strong contractor participation in BPI’s pilot Home Energy Professional certification exam program, BPI will hold an open applicatio…

Started by Mike Kandel in General Forum

1 Aug 1, 2012
Reply by Sean Lintow Sr

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Too many BTU's. Too much horsepower?

Started by Steve in General Forum. Last reply by Walter Ahlgrim 1 hour ago. 3 Replies

Stack/wind pressure and flow networks.

Started by Daniel James Grundy in Training. Last reply by Daniel James Grundy 6 hours ago. 5 Replies

BDT with vermiculite in hollow CMU walls?

Started by Brad Cook in General Forum. Last reply by John Nicholas 12 hours ago. 2 Replies

Strange IR Image

Started by Larry Nissman in General Forum. Last reply by Brad Cook Mar 9. 7 Replies

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Walter Ahlgrim replied to Steve's discussion Too many BTU's. Too much horsepower?
"The 5 ton system you have is not 500 hp racecar engines they are 500 hp truck engines. The duct…"
1 hour ago
Daniel James Grundy replied to Daniel James Grundy's discussion Stack/wind pressure and flow networks.
"So I wanted to start with a basic who can help then go into more detail later. But yes find…"
6 hours ago
Daniel James Grundy replied to Daniel James Grundy's discussion Stack/wind pressure and flow networks.
"My tutor got back to me and while areas don't quite feel right a little to much assumptions…"
6 hours ago
Brennan Less replied to Daniel James Grundy's discussion Stack/wind pressure and flow networks.
"Daniel, I'm assuming you're trying to predict the airflows through the different openings…"
7 hours ago
Martin Newmark joined allen p tanner's group
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Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
9 hours ago
John Nicholas replied to Brad Cook's discussion BDT with vermiculite in hollow CMU walls?
"If the drywall is in good shape, you should have little worries about the 50pa depressurization…"
12 hours ago
tedkidd replied to Steve's discussion Too many BTU's. Too much horsepower?
"Does the house ever feel clammy? Do you have to keep the thermostat below 74 to be comfortable? Is…"
14 hours ago
Danielle Sass Byrnett liked Diane Chojnowski's blog post Don MacOdrum receives BPI's 2017 Tony Woods Award!
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