Thursday, June 2, 2016

Blower Door / Window Door Tests

Passive House Airtightness Achieved!

We ran a few different tests today to validate our airtightness numbers:

Our Field Measured Volume is 29356 CUFT

We did a Window Blower Door Test with the Duct Blaster

Here are photo's from our "Depressurization Test"

52 CFM50 - 0.106 ACH50


Here are photo's from our "Pressurization Test"

65 CFM50 - 0.133 ACH50

We also ordered the "D Ring" for the blower door to get an accurate Blower Door Number 
I should note - the tolerance for the D-Ring is:
125 CFM - 30 CFM

Here are photo's from our "Depressurization Test"
 
49 CFM50 - 0.100 ACH50


Here are photo's from our "Pressurization Test"



52 CFM50 - 0.106 ACH50

To average the results we are at 50.5 CFM50 

A few notes from the tests:

  • The blower door pressurization test was done in the protected breezeway door vs the duct blaster pressurization test that was done on the open back yard. 
  • We did a blower door pressure test up to 90 Pascals to see when/if the Studor Vents (AAV's) opening would effect our results - there was no noticeable difference:
  • The Blower Door Frame was extended fully to accommodate the width of our door. The seal was probably not perfect
  • All of our plumbing is not installed yet - we will do another test once it is.
  • We were having trouble syncing our computer to the manometer to complete a multi-point test, once we do that we will post those results!
From what I could find the tightest house in the world is in Alaska - 0.05 ACH50 - we are 25 CFM50 away from that.

Stay Tuned!



3 comments:

  1. could you tell me what criteria you use to determine your interior volume? or direct me to a web site that details the passive house standard on what is included and what isn't? Thanks so much. Keep up the great work.

    ReplyDelete
  2. 475 did a great article on their blog on how to do this:
    https://foursevenfive.com/blowerdoor-protocol-for-verification-of-0-6ach50-for-passive-house-certification/

    The standard is EN 13829, so an internet search should lead you in the right direction

    ReplyDelete
  3. Thanks for your post which is truly informative for us and we will surely keep visiting this website.
    Windows For Homes
    Windows And Doors Phoenix

    ReplyDelete