Graham Irwin
  • Fairfax, CA
  • United States
Share on Facebook Share on Facebook Share
  • Featured Blogs
  • Discussions (22)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

Graham Irwin's Friends

  • Kaushal Bharath Raju
  • Mark Attard
  • Chie Kawahara
  • Linda Wigington
  • Alice La Pierre
 

Graham Irwin's Page

Latest Activity

Graham Irwin commented on Chris Laumer-Giddens's blog post Insulating a Slab-On-Grade in Hotlanta
"It's pretty hard to find a place in the US where the soil temperature is "perfect." In most cases, it's either too cold, or too hot, as the map here…"
Feb 1, 2016
Graham Irwin replied to Tauran Ivall's discussion Energy Efficient Entry Door options out there?
"Hammer and Hand make beautiful, high-end, super efficient and durable custom doors. These doors are not mass-market (hence the "custom" part) but they are much better than most custom doors available out there. The people who are in the…"
Nov 27, 2015
Graham Irwin replied to Tauran Ivall's discussion Energy Efficient Entry Door options out there?
"Oh, and to eliminate the leaky "sweep" gasket at the sill, we used an outswing door (with a bumper sill) installed backwards. Note that this only works under a deep porch, since the "inside" of an outswing door will not shed…"
Nov 27, 2015
Graham Irwin replied to Tauran Ivall's discussion Energy Efficient Entry Door options out there?
"On this Passivhaus retrofit in Santa Cruz (http://midorihaus.com) we used Plastpro (http://www.plastproinc.com). The have triple point latches as an option. They worked out pretty well and were reasonably priced."
Nov 27, 2015
Graham Irwin commented on Home Energy Magazine's blog post Revisiting Electrification
"As we move toward more and more renewable energy in the grid, storage will be a key issue. The biggest challenge is providing renewable energy in winter, when solar energy is lowest. Not coincidentally, that's also when heating demand is…"
May 7, 2015
Graham Irwin posted an event

Passive House: Building A “Renewable Ready” California at Online

May 12, 2015 from 1pm to 2pm
In this webinar we will discuss cost­‐optimized, high­‐performance homes that meet the “Passive House standard” and how this can be achieved throughout California with minimal additional effort and cost. Attention will be paid to the economies of scale and construction cost reductions available in multi-family Passive House buildings.See More
Apr 30, 2015
Graham Irwin replied to George Kopf's discussion How does efficiency factor into a grid parity world?
"John, Interesting though, if you read this NREL article (https://financere.nrel.gov/finance/content/germany-solar-feed-in-ta...), it would suggest that we are spending as much as Germany per installed kW if federal tax credits and accelerated…"
Oct 23, 2014
Graham Irwin replied to George Kopf's discussion How does efficiency factor into a grid parity world?
"George, You raise a good question. The concept of "free and unlimited" energy is not new, in fact it is arguable that this idea is what got us into the trouble we're in to begin with (http://en.wikipedia.org/wiki/Too_cheap_to_meter).…"
Oct 23, 2014
Graham Irwin replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
Sep 4, 2014
Graham Irwin replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Great information, thank you!"
Aug 5, 2014
Graham Irwin replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Useful information is the Coefficient of Performance (COP) of the whole house fan vs. alternatives. The true answer is more complicated than that, since all equipment has a COP "curve" that flattens out as the delta-T between inside and…"
Aug 5, 2014
Graham Irwin replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Thanks for the input. The next question to ask is "how much cooling power is delivered in each case?" Whole house fans work best when the house is hot and the air is cold. Either of those things change and they work less well. I am not…"
Aug 1, 2014
Graham Irwin replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Kurt, The "large fan" is a whole house fan moving anything from 1000-4000 CFM. By comparison, the ventilation system for the T24 prototype home we modeled was 67 CFM. As you might imagine, a fan that moves 1000-4000 CFM could use a lot of…"
Aug 1, 2014
Graham Irwin replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"I think it is important to check the energy consumption of such a large fan, even assuming it can be properly air-sealed and insulated. We are finishing up a study on 2013 Code vs. Passive House in each of California's climate zones and, while…"
Jul 31, 2014
Graham Irwin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
May 1, 2014
Graham Irwin replied to Kaushal Bharath Raju's discussion Affordability & Deep Energy Upgrade/Passive House Retrofit in Berkeley, California.
"Good point, but the Passive House system is also running continuously, which would tend toward higher capture efficiency as contrasted to a situation with low vented range hood usage. While the intermittent rate may be higher, its duty cycle may be…"
May 1, 2014

Profile Information

Company
Essential Habitat
Professional Certification
Passive House Designer & Consultant
Website URL
http://www.essentialhabitat.com

Comment Wall (1 comment)

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

At 12:09pm on January 6, 2011, Diane Chojnowski said…

Hi Graham,

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

 
 
 

Featured Forum Discussions

Lighting replacement - 300 watt LED flood light

Started by Mary Sinkler in General Forum. Last reply by Jan E. Graveamker 20 minutes ago. 4 Replies

Glass Block Windows

Started by Ken Kalke in Best Practices. Last reply by Sean Lintow Sr on Saturday. 1 Reply

What's the Most Profitable HVAC Job for Your Company?

Started by Wayne Melancon in HVAC. Last reply by Ken Kalke on Friday. 1 Reply

EZ Green Home is Hiring!

Started by Chloe Chapman in General Forum Jan 5. 0 Replies

Videos

  • Add Videos
  • View All

Latest Activity

Jan E. Graveamker replied to Mary Sinkler's discussion Lighting replacement - 300 watt LED flood light
"Hi Mary, What is the purpose of lighting the backyard ?  Sense of safety, night time…"
20 minutes ago
Chris Laumer-Giddens liked Chris Laumer-Giddens's blog post Rock Wool Insulation for Floor of High Performance Tiny House
1 hour ago
Joe Davis liked Wayne Melancon's discussion What's the Most Profitable HVAC Job for Your Company?
3 hours ago
Joe Davis replied to Mary Sinkler's discussion Lighting replacement - 300 watt LED flood light
"Well said Dennis, try a lighting calculation for the space you need."
3 hours ago
Chris Laumer-Giddens's blog post was featured

Rock Wool Insulation for Floor of High Performance Tiny House

ROCK WOOL INSULATION FOR FLOOR OF HIGH PERFORMANCE TINY HOUSEIn August of 2016, we posted a video…See More
7 hours ago
Horace Douglas Hunt, Jr. joined Tom White's group
Thumbnail

Weatherization

Share your concerns and successes as a weatherization professional, or information for this…See More
9 hours ago
Horace Douglas Hunt, Jr. joined Sean Lintow Sr's group
Thumbnail

Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what…See More
9 hours ago
Horace Douglas Hunt, Jr. joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
9 hours ago

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service