John C. Semmelhack's Discussions (19)

Discussions Replied To (17) Replies Latest Activity

"That air handler (PEFY...) is only 10-inches thick...I'm not getting why this would…"

John C. Semmelhack replied Feb 21 to Ducted mini split vs ceiling cassettes?

6 Feb 26
Reply by Franco Oyuela

"Yes...this test should be done at the highest fan speed (without messing with the in…"

John C. Semmelhack replied Oct 1, 2018 to How to measure room pressures

20 Oct 5, 2018
Reply by John Proctor

"Mitsubishi has a refrigerant-to-water heat exchanger in their City-multi VRF lineup,…"

John C. Semmelhack replied Jun 13, 2018 to GSHP for domestic hot water

4 Jun 28, 2018
Reply by Eric Kjelshus

"I agree with David really depends on the inputs into the model as well a…"

John C. Semmelhack replied May 19, 2018 to HERS score with HRV

9 Jun 7, 2018
Reply by Nicholas Burger

"From the article: "Lynae Forbes, president and principal broker at Hasson Company Re…"

John C. Semmelhack replied May 10, 2018 to Portland home energy scores not so hot

4 May 10, 2018
Reply by tedkidd

"I agree with David. All of the tightest houses I've tested have used Therma-tru door…"

John C. Semmelhack replied May 2, 2018 to Fire Rated High Performance Doors

3 May 2, 2018
Reply by John C. Semmelhack

"I've tried out most of the available residential energy monitors over the years and…"

John C. Semmelhack replied Jan 9, 2018 to Experience with new energy monitoring tools such as Curb, Sense, Nerio and Smapee

25 Oct 8, 2018
Reply by Dav Camras

" "

John C. Semmelhack replied Oct 24, 2017 to Replacement for Energy Conservatory Flow-blaster

1 Oct 24, 2017
Reply by John C. Semmelhack

"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


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More people than ever think green when buying a home

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Where to spend my marketing dollars?

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Started by Craig Bird in Weatherization. Last reply by John White May 9. 19 Replies

Water heater ventilation question

Started by Luis Hernandez in General Forum. Last reply by Dennis Heidner May 8. 23 Replies

Latest Activity

Jim Gunshinan's blog post was featured
Roy Terry posted photos
Michael Cuomo replied to Diane Chojnowski's discussion More people than ever think green when buying a home
"I totally agree with all the points as it is true that one can go for a home which reduce their…"
Future Solar WA posted a blog post

How much does a 1.5kW solar power system cost in Perth?

Mostly the cost of 1.5kW solar power system depends on the region and it’s DNI (a measure of amount…See More
Edwin Rodriguez-Ubinas posted photos
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Dennis Heidner replied to Mark Furst's discussion Worst boiler ever?
"Wow,  a combination boiler and basement fireplace... great for toasting marshmellows and…"
Joe Hughes posted an event

IAQ Radio - Episode 547 - Flashback Friday - Claudette Hanks Reichel, Ed.D at Online Live

May 24, 2019 from 12pm to 1pm
Claudette Hanks Reichel, Ed.DBuilding Science & Housing Resilience: Bringing Research to…See More

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