Dennis Heidner's Discussions (203)

Discussions Replied To (174) Replies Latest Activity

"That really depends on your location.  Northern climates yes,  but Hawaii,  or clima…"

Dennis Heidner replied May 25, 2014 to Tankless Water Heaters... has their time finally come?

36 on Saturday
Reply by tedkidd

"Yes,  and the authors unit (Marey) is probably okay,  until you look at what else mi…"

Dennis Heidner replied May 23, 2014 to Tankless Water Heaters... has their time finally come?

36 on Saturday
Reply by tedkidd

"AO Smith Vertex is about $1600, 90% efficient, 78,000 BTU,  which means you might be…"

Dennis Heidner replied May 23, 2014 to Tankless Water Heaters... has their time finally come?

36 on Saturday
Reply by tedkidd

"Nearly all the manufacturers also offer tanked condensing gas hotwater heaters with…"

Dennis Heidner replied May 23, 2014 to Tankless Water Heaters... has their time finally come?

36 on Saturday
Reply by tedkidd

"First,  always check with your utility.  Sometimes the utilities have made arrangeme…"

Dennis Heidner replied May 15, 2014 to Where did you buy your LED lights?

23 Nov 14, 2014
Reply by Dennis Heidner

"Several things to consider: 1) The hot water usage. The first unit (Amazon) is only…"

Dennis Heidner replied Apr 29, 2014 to Tankless Water Heaters... has their time finally come?

36 on Saturday
Reply by tedkidd

"I believe PolyISO can absorb moisture if it gets wet... and it would get heavy.  Mak…"

Dennis Heidner replied Mar 18, 2014 to Rigid Foam (Polyiso) as a Weather-Resistive Barrier

10 Mar 18, 2014
Reply by Dennis Heidner

"Dennis McCarthy,  not sure if you've seen this... "Cree Sheds Light on Development o…"

Dennis Heidner replied Feb 16, 2014 to Solid state lighting - saves lives- and it improves life .

4 Nov 26, 2014
Reply by reflintorm

"It is okay as long as you remember  both green and red are the colors that can not b…"

Dennis Heidner replied Feb 14, 2014 to Solid state lighting - saves lives- and it improves life .

4 Nov 26, 2014
Reply by reflintorm

"Good point.   The low cost iPhone cameras are also opportunities for teaching moment…"

Dennis Heidner replied Feb 14, 2014 to Smartphone Infrared Thermal Imaging Camera

12 Feb 14, 2014
Reply by Dennis Heidner

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Forum Discussions

How would you insulate this roof?

Started by David Butler in General Forum. Last reply by David Butler 1 hour ago. 34 Replies

Psychrometric Chart Training

Started by John Krochmalny in Training. Last reply by Mahendra Shah on Friday. 1 Reply

Dirty solar panels

Started by Evan Mills in General Forum. Last reply by Stacie Bagnasco Oct 16. 1 Reply

Latest Activity

David Butler replied to David Butler's discussion How would you insulate this roof?
"Sean Lintow proposed rails and clips (re: first comment in this discussion), but in the context of…"
1 hour ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"I missed where the suggestion for rails came in. The plywood would not need any rails. 4+ inches is…"
5 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"I'm a little confused about the necessity and purpose of using support rails if working on…"
5 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"If you insulate master bedroom and family room from below, you definitely need more R-value than…"
5 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"Brad, I was only talking about using EPS between the ridges, if necessary, to conform to bolts.…"
6 hours ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"It kind of depends on the PIC. Not all insulation is made the same. Here in VT (and all of New…"
6 hours ago
David Butler replied to David Butler's discussion How would you insulate this roof?
"Filling those shallow valleys with rigid foam not only prevents primary foam panels from…"
6 hours ago
Brad Cook replied to David Butler's discussion How would you insulate this roof?
"Bill, you just posted a number of responses in different areas of the thread. I will try to respond…"
10 hours ago

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