[Greenbuilding] [BULK] Re: Greenbuilding Digest, Vol 18, Issue 8

[Lawrence Lile]

Welcome to the list! 

You may have tuned in just at the end of a long (too long for my taste,
I wasn't paying any attention to it by the last) thread.  Your point is
well taken - controlling the ventilation (and for us allergy sufferers
FILTERING it!) is critical. Exhaust-only ventilation just pulls air
through every crack. 

I read one post that said "We live in the country, so we open up our
windows and get fresh, clean air!"  Yeech - fresh, pollen-laden air if
you ask me.  My windows stay shut all summer, thank you, and mechanical
ventilation through a 2" thick filter is the rule of the day.  

Ask us almost anything about buildings, there is plenty of expertise
here and we are all interested in discussing anything remotely "Green".


I would guess you might be in the home certification industry?

Lawrence Lile, PE, LEED AP
Project Solutions Engineering

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Balance
Point Home Performance
Sent: Tuesday, December 04, 2007 9:36 PM
To: greenbuilding at listserv.repp.org
Subject: [BULK] Re: [Greenbuilding] Greenbuilding Digest, Vol 18, Issue
8
Importance: Low

I am new to the list, forgive me if you have recently covered this.  
Why is there so much focus on exhaust only ventilation.  Although it 
plays an important role in removing moisture from a home it falls short 
of providing reliably good air quality since there is no way to prevent 
air from filtering through the walls, floors and attics.  Whereas 
supply side ventilation gives you the ability to pick your source 
location and to deliver the air to sleeping and living areas.  This 
approach has the added benefit of positively pressurizing the home and 
reducing the likely hood of pulling bad air into the occupied space.

Dan

Balance Point Home Performance Inc.