Graham Irwin's Discussions (19)

Discussions Replied To (19) Replies Latest Activity

"If you applied 100 CFM to the kitchen on demand, it would meet the 62.2 requirement,…"

Graham Irwin replied May 1, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"This is pretty unsettling! To clarify, the presence of a recirculating hood is not a…"

Graham Irwin replied May 1, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"0.006 ACH50 would be better, but not feasibly attainable. 1.5 vs 0.6 ACH50 makes a b…"

Graham Irwin replied Apr 30, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"True, a vessel leaking water at the same rate would lose more energy, but since the…"

Graham Irwin replied Apr 30, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"I take issue with your reasoning. Since Passive House is a performance metric, the c…"

Graham Irwin replied Apr 30, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"It's interesting to me that ASHRAE 62.2 requires a kitchen exhaust vented directly t…"

Graham Irwin replied Apr 30, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"I've been involved with a number of Passive House retrofits in California, including…"

Graham Irwin replied Apr 24, 2014 to Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.

85 May 22, 2014
Reply by Kaushal Bharath Raju

"Remember to convert CFM (cubic feet per MINUTE) to cubic feet per HOUR (i.e. ft3/hr…"

Graham Irwin replied Jan 27, 2014 to Calculating BTU lost per cfm leaks

23 Feb 1, 2014
Reply by Dmitri A Martin

"Bud, "In an article from one of the developers of the "n" number he stated the resu…"

Graham Irwin replied Jan 27, 2014 to Calculating BTU lost per cfm leaks

23 Feb 1, 2014
Reply by Dmitri A Martin

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Mariusz Chorazy posted a blog post

Here are a few tips to keep your air conditioning bill low

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16 hours ago
Dale Pickard replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"Morgan, I got this below from the Knight installation manual. I note a few things, -These…"
19 hours ago
Dale Pickard replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"Hans, The car manufacturer's are doing it with mass flow sensors and oxygen sensors…"
yesterday
Dale Pickard replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"I was trying to avoid naming manufacturers, but I was going by the published information for the…"
yesterday
Eric Kjelshus replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"I look at this not about AFUE,  but flue gas dewpoint.  If your burn rate is rotting the…"
yesterday
Bob Blanchette replied to Kirsten Richnavsky's discussion Crawl spaces and attics: OSHA to implement new rule on confined spaces
"Keeping HVAC equipment out of attics should be part of the new code. "
yesterday
Linda Wigington replied to Linda Wigington's discussion Weigh in - Honorable Mention? 2nd Base? Half-Way There? 50% Better? On the Path? in the group 1000 Home Challenge
"Nickie -  Good points. I think it is easy enough to flag or designate projects that achieve…"
yesterday
Morgan M Audetat replied to Rod Fox's discussion Does altitude affect AFUE? or just the input/output BTUs?
"Though Viessmann is relatively unique in the application of Lambda technology to condensing…"
yesterday

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