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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Simon added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
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Advice needed please

I'm looking to build my own blower unit for use with the minneapolis system.Please could anyone…See More
2 hours ago
Simon joined Kim Tanner's group
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TEC

Discussion group for The Energy ConservatoryHave a question about residential or big building air…See More
2 hours ago
Rob Madden, Solar Home Broker replied to Rob Madden, Solar Home Broker's discussion Indoor Air Quality Monitors and Meters
"With a Foobot, are you able to recalibrate the sensors?  While I like the price and the…"
15 hours ago
Steve Mann replied to Steve Mann's discussion Eliminator EF400 Smoke Machine in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Yes it is. Steve"
18 hours ago
Laurie DiDonato updated an event
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Become a HERS Rater with the NE HERS Alliance this fall! at Classroom Component at Energize Connecticut Center

September 19, 2016 at 9am to October 21, 2016 at 5pm
Online Component: September 19th-30th - Weekdays 9am-12pm5-Day Classroom/Field Training:October…See More
19 hours ago
Melissa Baldridge posted a discussion

IECC 2012 & 2015 Compliance & HRVs

 I’m failing IECC 2012 with the HRVs we’ve been using – Honeywell .  (See specs below that I…See More
20 hours ago
Chris Woods replied to Steve Mann's discussion Eliminator EF400 Smoke Machine in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Is this still available?"
20 hours ago
Melissa Baldridge replied to Melissa Baldridge's discussion ENERGY STAR - Slab Insulation
"Thanks, John.  That's helpful.  And yes - I've seen projects with perimeter…"
20 hours ago

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