I'm looking for clarification on required ventilation levels in residential settings.  For instance if I have a home that indicates an ach rate of considerably less than .35 that would suggest the addition of mechanical ventilation. I'm unclear, however on how much is enough, how much is too much?  It would seem that the additional air exchange rate should be based around the actual natural rate difference between the measured amount and .35.

Views: 2960

Reply to This

Replies to This Discussion

Michael - It is great to see that there are some folks out there thinking.  Building science folks are the ones that preach you have to test before you know...  But when it comes to ventilation we take a one size fits all approach.  I'm sure that is why there is so much confusion about ventilation.  No matter what building science type board you look at there is always an active discussion on ventilation.    No one understands it because how we generally "fix" the problem does not make sense. 

 

Thanks for giving me hope that one day we will move past prescriptive ventilation.

I dont know in which area you staying but If possible you can take hole from residential general contractor who will provide you free Constance services

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Sean Lintow Sr replied to Bud Poll's discussion Inconsistant Local Authotity
"There are actually plenty of them out there like the manufacturers themselves, SPFA, BSC,…"
2 hours ago
Profile IconEthan Bukowiec and Andy Li joined Home Energy Pros
8 hours ago
Bob Blanchette replied to w d's discussion Managing Solar Energy
"Look into passive solar heating. The south windows have enough overhang that the windows are shaded…"
21 hours ago
Steve Waclo commented on Kaplan Clean Tech's blog post The Difference Between Home Inspection and Energy Auditing [Infographic]
"Excellent graphic summary but I don't agree Home Inspectors also check energy use. I believe…"
yesterday
Steve Waclo replied to Linda Wigington's discussion Low-cost electricity monitoring: Accuracy & Applications in the group 1000 Home Challenge
""The problem with plug in energy testers is they miss most of a typical homes energy use. 240v…"
yesterday
w d posted a discussion

Managing Solar Energy

What's the state of the art on managing solar energy (esp. at the home)?There's surely no…See More
yesterday
Bud Poll posted a discussion

Inconsistant Local Authotity

It becomes frustrating to give people modern advice and then have to backtrack and tell them to do…See More
yesterday
Morgan Hunter replied to Isaiah Borel's discussion Blown Cellulose VS Blown Fiberglass in the Attic
"Up here In Canada Fibreglass wins hands down for heat loss! Check back 5, 10 & 20 years later…"
yesterday

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service