Randall Olsen
  • Hillsboro, OR
  • United States
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Randall Olsen's Discussions

How to measure room pressures

Started this discussion. Last reply by John Proctor Oct 5, 2018. 20 Replies

Other then complying with SWS 6.6201.3a (No room will exceed +/- 3 pascals with reference to the outside with all interior doors closed and ventilation systems running) is anyone measuring room…Continue

Tags: infiltration, flow, air, pressures, room

 

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John Proctor replied to Randall Olsen's discussion How to measure room pressures
"Mark -- you are right I should not have said never. The only walls that I have seen that do not leak to the exterior are houses built with airtight drywall. Since you have not seen leakage from interior walls I wonder why you seal at the top…"
Oct 5, 2018
Mark Furst replied to Randall Olsen's discussion How to measure room pressures
"Busy days "I have never seen an inside wall that did not leak to the exterior." I have noticed some top plate leakage at a handful of walls in some homes but certainly not enough to make a blanket statement about "all" walls. I…"
Oct 5, 2018
Randall Olsen liked Randall Olsen's discussion How to measure room pressures
Oct 2, 2018
Randall Olsen liked Randall Olsen's discussion How to measure room pressures
Oct 2, 2018
John Nicholas replied to Randall Olsen's discussion How to measure room pressures
"Next time you final a new house or complete a home energy audit:   Tape off the return in one bedroom.  Then turn turn AH on -  heat or cool.   Now place the manual damper (*aka door") to about 4 inches from…"
Oct 1, 2018
John Proctor replied to Randall Olsen's discussion How to measure room pressures
"I have never seen an inside wall that did not leak to the exterior. Go ahead talk about the leakage to outside test."
Oct 1, 2018
Mark Furst replied to Randall Olsen's discussion How to measure room pressures
"Leakage, yes, but to where? The interior? These are only run in interior walls (exteriors have to be ducted) and, generally they work just fine unless they have the installation problems I mentioned above. Plus, the contractors are much getting…"
Oct 1, 2018
David Butler replied to Randall Olsen's discussion How to measure room pressures
"Daniel wrote: "Any air not returning to the system from each room will be gained from elsewhere." Not necessarily. Notwithstanding combustion safety testing (which predates green building programs), zonal pressure testing is an important…"
Oct 1, 2018
Paul Morin replied to Randall Olsen's discussion How to measure room pressures
"The Weatherization Assistance Program Standard Work Specifications vary state to state. I suggest contacting your state office for clarification.  I would want to know how they define ventilation systems.  Does this include exhaust fans,…"
Oct 1, 2018
Daniel Baur-McGuire replied to Randall Olsen's discussion How to measure room pressures
"If you are going for just a good system I would stick w the 3pascal limit and would aim for less. Any air not returning to the system from each room will be gained from elsewhere. Most likely outside air, adding load as well. Personally I would test…"
Oct 1, 2018
Randall Olsen replied to Randall Olsen's discussion How to measure room pressures
"We test for the Weatherization Assistance Program.  But the Standard Work Specifications and the BPI 1200 -s-2017 no longer require or mention testing room pressures except for SWS 6.6201.3a (No room will exceed +/- 3 pascals with reference to…"
Oct 1, 2018
Daniel Baur-McGuire replied to Randall Olsen's discussion How to measure room pressures
"In cooling mode (highest fan speed setting) all interior door closed WRT the main body of the building. Are you testing for any specific program?"
Oct 1, 2018
Kent Browning replied to Randall Olsen's discussion How to measure room pressures
"Didn't you answer your own question? "... SWS 6.6201.3a (No room will exceed +/- 3 pascals with reference to the outside with all interior doors closed and ventilation systems running) ...""
Oct 1, 2018
John Proctor replied to Randall Olsen's discussion How to measure room pressures
"OMG Mark -- Panned joists -- guaranteed duct leakage."
Oct 1, 2018
John C. Semmelhack replied to Randall Olsen's discussion How to measure room pressures
"Yes...this test should be done at the highest fan speed (without messing with the installer's speed tap settings) with all bedroom doors closed. With air handlers that have different speed settings for heat vs. cool, you should choose the…"
Oct 1, 2018
John Proctor replied to Randall Olsen's discussion How to measure room pressures
"Since the specification you are quoting (?) specifies ventilation system and all interior doors closed and with reference to outside, one can would deduce it is there to test for an imbalance in flows from the ventilation system. If it across the…"
Oct 1, 2018

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Company
Community Action Organization
Role in Home Performance Marketplace
Energy efficiency / Weatherization program administrator or implementer / evaluator
Professional Certification
BPI

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At 12:20pm on September 27, 2017, Diane Chojnowski said…

Hi Randall,

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!

Don't forget to upload your profile photo.

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Diane, HEP Moderator

 
 
 

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