Hans Joachim Preiss's Discussions (18)

Discussions Replied To (18) Replies Latest Activity

"Dan, Let me attempt to compare apples with apples: My solar thermal system is locate…"

Hans Joachim Preiss replied Apr 29, 2016 to Net Zero Energy Hot Water

18 May 12, 2016
Reply by Tom Mallard

"I use the combination of solar PV and heatpump water heaters in the vast majority of…"

Hans Joachim Preiss replied Apr 29, 2016 to Net Zero Energy Hot Water

18 May 12, 2016
Reply by Tom Mallard

"I personally don't have an answer for you and would have to research the web myself.…"

Hans Joachim Preiss replied Nov 20, 2015 to Energy Efficient Entry Door options out there?

25 Nov 28, 2015
Reply by Tauran Ivall

"Most European hardware engages on all sides pulling the door into the gaskets evenly…"

Hans Joachim Preiss replied Nov 12, 2015 to Energy Efficient Entry Door options out there?

25 Nov 28, 2015
Reply by Tauran Ivall

"I don't perform any audits myself, but I came across this relatively new tool that m…"

Hans Joachim Preiss replied Sep 17, 2015 to What is the best energy auditing software?

18 Apr 12, 2016
Reply by Ben Meyer

"A hole dip tube would only play a role when hot water is drawn and cold water enters…"

Hans Joachim Preiss replied Sep 5, 2015 to Does calcification affect electric water heater aquastat temperature sensor performance?

19 Sep 24, 2015
Reply by tedkidd

"Rod, Because the tank is not overheating, the behavior is either normal for this tan…"

Hans Joachim Preiss replied Aug 27, 2015 to Does calcification affect electric water heater aquastat temperature sensor performance?

19 Sep 24, 2015
Reply by tedkidd

"Calcification happens on the heating elements because hardness causing minerals are…"

Hans Joachim Preiss replied Aug 27, 2015 to Does calcification affect electric water heater aquastat temperature sensor performance?

19 Sep 24, 2015
Reply by tedkidd

"Good discussion. I came across this comprehensive presentation by Gas Consultants on…"

Hans Joachim Preiss replied Jul 2, 2015 to Does altitude affect AFUE? or just the input/output BTUs?

25 Jul 15, 2015
Reply by Morgan M Audetat

"Rod, Correct me if I am wrong, but you're saying "AFUE" but really mean "actual effi…"

Hans Joachim Preiss replied Jun 26, 2015 to Does altitude affect AFUE? or just the input/output BTUs?

25 Jul 15, 2015
Reply by Morgan M Audetat

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Forum Discussions

Investigating 3257KWH monthly usage issue.

Started by Brent Shapiro in General Forum. Last reply by John Nicholas 5 hours ago. 6 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

John Nicholas replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"Check out the DHW unit.  What temperature is the water entering and leaving the unit?…"
5 hours ago
Brent Shapiro replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"With regard to the outside lighting - zero outside lighting, in fact the lighting in the basement…"
8 hours ago
Green ID posted blog posts
8 hours ago
Rob Buchanan posted a discussion

Building envelope and mechanical interactive effects

Good afternoon everyone,I was reviewing some of the old BPI newsletters and noticed a…See More
12 hours ago

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