John C. Semmelhack's Discussions (9)

Discussions Replied To (9) Replies Latest Activity

"For multi-split systems from the quality manufacturers, plan on roughly $2,500-3,000…"

John C. Semmelhack replied Feb 12, 2015 to Whole-house Ductless Mini-split install costs

6 Jun 29, 2015
Reply by Robert Bass

"Graham, The U.S. is catching up to Germany very quickly on solar installs. As of the…"

John C. Semmelhack replied Oct 23, 2014 to How does efficiency factor into a grid parity world?

5 Oct 26, 2014
Reply by Bob Blanchette

"HVAC contractor (ideally) drills the 1" hole, then tapes over afterward.  I investe…"

John C. Semmelhack replied Jan 24, 2013 to Measuring fresh air intake ducted to a return and no way of measuring from outside.

22 Feb 7, 2013
Reply by Dale Sherman

"By the way...not sure what climate you're in, but someone should probably should ins…"

John C. Semmelhack replied Jan 24, 2013 to Measuring fresh air intake ducted to a return and no way of measuring from outside.

22 Feb 7, 2013
Reply by Dale Sherman

"There are in-duct measurement techniques that are accurate enough for this purpose.…"

John C. Semmelhack replied Jan 24, 2013 to Measuring fresh air intake ducted to a return and no way of measuring from outside.

22 Feb 7, 2013
Reply by Dale Sherman

"Why are you wondering how much airflow occurs at this intake?   1) Required for Ene…"

John C. Semmelhack replied Jan 24, 2013 to Measuring fresh air intake ducted to a return and no way of measuring from outside.

22 Feb 7, 2013
Reply by Dale Sherman

"Dan,  Good to hear you're evaluating the reduced airflow form the CAR's. I'm intere…"

John C. Semmelhack replied Nov 20, 2012 to AirGenerate Heat Pump Water Heaters - any experience?

5 Nov 20, 2012
Reply by John C. Semmelhack

"Dan,  Have you measured the drop in efficiency/capacity caused by reducing the airf…"

John C. Semmelhack replied Nov 16, 2012 to AirGenerate Heat Pump Water Heaters - any experience?

5 Nov 20, 2012
Reply by John C. Semmelhack

"Yes, this can be done and is done.   Many of the ductless heat pump manufacturers ha…"

John C. Semmelhack replied Nov 10, 2011 to DHPs in MF projects

5 Nov 13, 2011
Reply by Pam Worner

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Forum Discussions

Investigating 3257KWH monthly usage issue.

Started by Brent Shapiro in General Forum. Last reply by Brad Cook 8 hours ago. 8 Replies

Earn 2 BPI CEUs by Blogging for BPI

Started by Quinn Korzeniecki in General Forum on Monday. 0 Replies

What made this chimney fall down?

Started by Eric Kjelshus in General Forum. Last reply by Eric Kjelshus Jun 15. 5 Replies

Studies on Home Energy Audit Energy Savings Potential?

Started by Julie Saporito in General Forum. Last reply by Danielle Sass Byrnett Jun 15. 5 Replies

Latest Activity

Green ID posted blog posts
4 hours ago
Brad Cook replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"Jason's suggestion my be a quick way to isolate the high load, IF you have an old style meter…"
8 hours ago
Home Energy Magazine's blog post was featured

The Results Are In: These Are The Most Energy-Efficient Utilities in the US

Our first-ever scorecard of US utilities, released today, reveals striking regional differences and…See More
yesterday
Joe Konopacki replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"Brent, Using an ammeter, I would measure each 'hot' conductor leaving the fuses. (Find an…"
yesterday

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