Michael Johnson
  • Male
  • Tacoma, WA
  • United States
Share on Facebook Share
  • Blog Posts
  • Discussions (9)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

Michael Johnson's Friends

  • Building Performance Institute
  • Diane Chojnowski

Michael Johnson's Discussions

Getting better without being so negative (depressurization)

Started this discussion. Last reply by Dennis Heidner Feb 18. 9 Replies

With the goal of making structures more well sealed and a desire to know where our "makeup air" is coming from we are doing more amazing air sealing and adding tech, like HRVs and ERVs, to supply…Continue

Tags: hood, air, seal, make-up, range

 

Michael Johnson's Page

Latest Activity

Dennis Heidner replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"We know what the definition of "not going negative is..." but the definition of "good residential IAQ"  has and continues to be a subjective definition.  Even ASHRAE has danced around it.  EPA (mostly for political…"
Feb 18
Sean Lintow Sr replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Problem with some baths is they don't get enough supply air in so that cuts down on the amount that actually does get exhausted over time - well that & crappy ducting installs 2nd if one goes with an ERV is the air mixing & getting…"
Feb 14
Matt Sharpe replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Keep working on it! and Good luck to you!"
Feb 13
Michael Johnson replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Matt,We air seal the ceiling and floor plane but, WX isn't quite there as far allowing us to vacuum the attic out or encapsulate the crawl ... but we're working on it. Again, thanks for the input, brother.MJ"
Feb 13
Matt Sharpe replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Hi Michael - yes - I couldn't agree more with the health benefits you describe. Definitely a reason to consider ducted HRV. I would also ask - at the cost of a ducted system - do you think the weatherization could go steps further to…"
Feb 13
Michael Johnson replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Matt,Thanks for taking the time to respond.The reason for not wanting negative pressure on the envelope for me, aside from the older combustion appliances (many times we replace), is that I find when doing IAQ testing, post air sealing and fan…"
Feb 13
Michael Johnson replied to Kyle Baker's discussion Thoughts on EVs? Love em or hate em?
"We have a '19 Leaf and a '13 Prius v. When the Prius is laid to rest we will replace both with Tesla products. These will be our last car purchases before retirement. The House will have PV installed this summer and will be 'off-grid…"
Feb 13
Matt Sharpe replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Great discussion topic - and great title! I have a few thoughts,  First - is being negative so bad? All atmospheric appliances ought to go. As Sean suggests, direct vent or electrify. There are efficiency gains and carbon savings to be had.…"
Feb 13
Michael Johnson replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Sean,Thank you for taking the time to give your input. I am grateful.Michael"
Feb 13
Sean Lintow Sr replied to Michael Johnson's discussion Getting better without being so negative (depressurization)
"Dehu in a bath - no you still need to remove odors HRV to bath - only if supply - yes I know some use them for exhaust but that can cause issues in some climates (ERV is definitely a no-no for exhaust) Range hoods - if over 400cfm a makeup supply is…"
Feb 6
Michael Johnson posted a discussion

Getting better without being so negative (depressurization)

With the goal of making structures more well sealed and a desire to know where our "makeup air" is coming from we are doing more amazing air sealing and adding tech, like HRVs and ERVs, to supply tempered & filtered air to these hermetically sealed spaces ... BUT, we're still installing high power bath fans (some that run 24/7) to ventilate not only the bathroom but sometimes the "whole house". Is this the best we can do? Is simply connecting a leg of the HRV to the bathroom the answer?…See More
Feb 6
Michael Johnson replied to Ed Minch's discussion Solar performance anomaly
"Does the utility program calculate / make provision for 'line loss'. You would have to find out if this is the case from one of the utilities programmers. Most, other than the programmers, will not know if this is the case. Might be a…"
Oct 15, 2019
Michael Johnson replied to AJ Afkham's discussion Drywall Gasket
""Let’s think for a second about what a high performance assembly wants to be, and not just what’s the simplest way to pass the blower door test. Generally speaking, in cold/mixed climates the exterior wants to be relatively vapor…"
Aug 12, 2019
Michael Johnson replied to Diane Chojnowski's discussion One of the most efficient homes in America
"I agree, Ed. The house itself scores an 80 but, add $100,000.00 in renewables and you get a -63. So, in my book, that does not make an efficient home ... just one that is HEAVILY offset with renewables. Don't get me wrong, I'm still happy…"
Jul 5, 2019
Diane Chojnowski left a comment for Michael Johnson
"Hi Michael, Welcome to Home Energy Pros Forum. Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos, and upcoming events. If you're blogging about home performance, this is the place…"
May 15, 2019
Michael Johnson replied to Daniel Baur-McGuire's discussion How to Insulate Exposed Outdoor Ductwork?? Help
"Due to just needing a temporary fix, I'd seal the ducts, wrap them in vinyl coated R-19 and build a weather resistant cover over everything. This would be the easiest to de-construct in the next couple of years and also give your clients…"
May 13, 2019

Profile Information

Company
Pierce County Human Services
Role in Home Performance Marketplace
Building energy modeler, Energy auditor / assessor / analyst, Government: local
Professional Certification
BPI
Professional Interests
Bringing buildings Net+
Twitter ID
https://twitter.com/neunrg
Facebook Page
https://www.facebook.com/neunrg/
LinkedIn Profile
https://www.linkedin.com/in/neunrg/

Comment Wall (1 comment)

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

Join Home Energy Pros Forum

At 11:35am on May 15, 2019, Diane Chojnowski said…

Hi Michael,

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

Thanks!

Diane, HEP Forum Moderator

 
 
 

Forum

Looking to buy used equipment

Started by Heidi McCullough in General Forum. Last reply by Van Moon yesterday. 4 Replies

Interview Posts for Consumer Education Blog?

Started by Sarah Alexander in General Forum. Last reply by Sarah Alexander on Friday. 5 Replies

Oily Stuff in ERVs

Started by Paul Raymer in HVAC. Last reply by Dennis Heidner on Thursday. 5 Replies

Thoughts on EVs? Love em or hate em?

Started by Kyle Baker in General Forum. Last reply by Dennis Heidner on Thursday. 19 Replies

building envelope air tightness studies

Started by Greg O'Beirne in General Forum. Last reply by Greg O'Beirne Feb 19. 19 Replies

Watts Up? Pro - Software Download

Started by Todd Abercrombie in General Forum. Last reply by Sean Wiens Feb 18. 3 Replies

Latest Activity

Building Performance Journal's blog post was featured
7 hours ago
Ashley Haight liked Emily Ambrose's blog post A Quick Guide to Climate Change Policy in 2020
10 hours ago
Profile Iconmarcodapper, Chowdhury Shahid-uz-zaman, John L Jorge and 3 more joined Home Energy Pros Forum
18 hours ago
Brett Little updated an event
Thumbnail

Carbon Negative & Non-Toxic Hemp Insulation - Free CE Webinar at Webinar Online

March 4, 2020 from 12pm to 1:15pm
Hempitecture's Tommy Gibbons explains how and why to incorporate hemp building materials into green…See More
19 hours ago
John L Jorge posted photos
yesterday
Van Moon replied to Heidi McCullough's discussion Looking to buy used equipment
"I have all of that, except no wifi adapter.  They are discontinued.   I have a DB…"
yesterday
Kristina Frunze commented on Kristina Frunze's blog post A Contractor’s Guide to Compensating for Oversized Air Conditioners
"@Kent Browning You are correct, I meant to say dehumidifier. Thank you for correcting that."
yesterday
Ashley Haight posted events
yesterday
Megan Nichols posted a blog post
yesterday
Kristina Frunze's blog post was featured

A Contractor’s Guide to Compensating for Oversized Air Conditioners

Most HVAC contractors know that an oversized air conditioner wastes substantial amounts of energy…See More
yesterday
Emily Ambrose's blog post was featured
yesterday
Carol Harley's blog post was featured

Veterans in Energy Efficiency - Who do you know?

Did you know that >236,000 U.S. veterans are now employed in energy efficiency? Veterans share…See More
yesterday

© 2020   Created by Diane Chojnowski.   Powered by

Badges  |  Report an Issue  |  Terms of Service