Elizabeth Guinn
  • Gloucester, VA
  • United States
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ERV in need of backflow preventer.
7 Replies

I installed an ERV on my last job with the intake and exhaust utilizing 6" round hard duct.  I have no problem locating an exhaust vent cover for the exterior of the house with a backflow preventer.…Continue

Started this discussion. Last reply by Morgan M Audetat Jun 5.

Question

One of the many green, energy efficiency websites I am subscribed to sent out an email last week that had an article and talked about a paperback book on HVAC everything you wanted to know.  It was…Continue

Started Mar 26, 2013

RemRate Water Furnace modeling problem
5 Replies

RemRate allows for a ground source heat pump and you can couple it to the domestic hot water system.  However I need to convert the Water Furnace's 5.0 COP to an equivalent EF.  Any ideas?????

Started this discussion. Last reply by Elizabeth Guinn Aug 8, 2011.

You might be an Energy Auditor if....
19 Replies

While cooking sugar into candy and not being able to locate the thermometer, you instead stand over the pot with your thermal imaging camera.

Started this discussion. Last reply by Timothy DeLuca Jun 29, 2011.

 

Elizabeth Guinn's Page

Latest Activity

Morgan M Audetat replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"Over-kill unless you are in an arctic environment.  Back flow preventer is a device used to protect potable water from the "back-flow" of non-potable fluids that may contaminate a water supply.  Damper is the term you are…"
Jun 5
John Nicholas replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"First,  What is the 24/7 CFM requirement for your house?   Second,  What is the CFM rating for the unit? The most efficient ERVs run closest to 60 minutes out of each hour.  Buying a unit that moves 70 CFM is less capital outlay…"
May 29
Eric Kjelshus replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"http://www.southwarkmetal.com/product/butterfly-dampers/ I have made my own but some work better than others.    You can take sail skrap and fold in a way to make a one way damper.   Jump up to 7" - 8" so the presser drop is…"
May 28
William H Nickerson replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
May 28
Elizabeth Guinn's discussion was featured

ERV in need of backflow preventer.

I installed an ERV on my last job with the intake and exhaust utilizing 6" round hard duct.  I have no problem locating an exhaust vent cover for the exterior of the house with a backflow preventer.  However, I cannot locate an exterior cover with a backflow preventer for the INTAKE side of the system.  Does anything like this exist?See More
May 26
Bradford E. White replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"I would use an in-line backdraft damper such as Artis Industries or the ones made by Fantech and other ERV/HRV manufacturers.  The Fantech ones are mildly spring loaded but have a low pressure drop that I have measured at less than 0.04 inches…"
May 21
Sean Lintow Sr replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"Bud pretty much nailed it - only a powered damper would really help do what you are envisioning - I take it this unit only runs for part of the time? If it runs 24x7 then it is completely unnecessary & one could even argue probably unnecessary…"
May 21
Bud Poll replied to Elizabeth Guinn's discussion ERV in need of backflow preventer.
"Hi Elizabeth, Zero experience with installing H/ERVs, but what you are looking for is probably a powered damper or powered latch.  Between the changing seasons where stack effect changes direction and the wind a passive solution would be…"
May 19
Elizabeth Guinn posted a discussion

ERV in need of backflow preventer.

I installed an ERV on my last job with the intake and exhaust utilizing 6" round hard duct.  I have no problem locating an exhaust vent cover for the exterior of the house with a backflow preventer.  However, I cannot locate an exterior cover with a backflow preventer for the INTAKE side of the system.  Does anything like this exist?See More
May 19
Elizabeth Guinn's discussion was featured

Question

One of the many green, energy efficiency websites I am subscribed to sent out an email last week that had an article and talked about a paperback book on HVAC everything you wanted to know.  It was about $80.  The comment was "If you have never read this _____ you should"  Can't find the email, can't find the book title.  Please help.  Did anyone else read this in the past week?See More
Apr 10, 2013
Elizabeth Guinn posted a discussion

Question

One of the many green, energy efficiency websites I am subscribed to sent out an email last week that had an article and talked about a paperback book on HVAC everything you wanted to know.  It was about $80.  The comment was "If you have never read this _____ you should"  Can't find the email, can't find the book title.  Please help.  Did anyone else read this in the past week?See More
Mar 26, 2013
Elizabeth Guinn replied to Eric M. Fletcher's discussion Winter condensation on windows in a house that is very well insulated.
"Do they have gas appliances like a stove?  for every pound of gas burned you pump a pound of water vapor into the house.  It can be pretty significant if you are someone who cooks a lot.  I would also check the Manual J that was done…"
Sep 13, 2012
Elizabeth Guinn joined David Eggleton's group
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1000 Home Challenge

Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from which we might propose when engaging with people, the ones who choose.See More
Aug 9, 2012
tedkidd replied to Elizabeth Guinn's discussion Sealed Combustion Wood burning stove?
"I was surprised to run across this.     Guess you just need to keep looking."
Oct 13, 2011
Greg Labbe replied to Elizabeth Guinn's discussion Sealed Combustion Wood burning stove?
"Check out page 11 of 42 of this user's manual. There's a 'knock out' plate for mobile homes to bringin fresh air in a more controled manner. I couln't imagine his stove in a trailer home…"
Oct 13, 2011
Michael J. Mayhew replied to Elizabeth Guinn's discussion Sealed Combustion Wood burning stove?
"I don't have the answer to the question that you're looking for, but what I did for my wood stove (which is a half-step), is purchased a Fresh 80 (Swedish air ventilation device), and mounted it very close to the woodstove.  Though…"
Oct 13, 2011

Profile Information

Company
GCI Energy Consultants/Dan Guinn Homes
Professional Certification
FE
Professional Interests
Own a Home Energy Auditing firm and an avid energy blogger
Website URL
http://danguinnhomes.com/wordpress/blog/
Twitter ID
danguinnhomes
Facebook Page
Dan Guinn Homes

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At 3:08pm on January 29, 2011, Diane Chojnowski said…

Hi Elizabeth,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos andupcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

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