Evan Riter
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Making crawlspaces conditioned space
37 Replies

I am working, doing audits, with a contractor who tends to make basements, crawlspaces into conditioned space. Especially when all or most of the duct work is in the crawlspace. He does this by…Continue

Started this discussion. Last reply by Curt Kinder Jan 3, 2013.

 

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Curt Kinder replied to Evan Riter's discussion Making crawlspaces conditioned space
"Be sure plastic is protected from mechanical damage by any future workers or residents accessing crawl space Be sure to leave exposed strip for termite inspection. If termite bond is in place, be sure they are on board with details of the project -…"
Jan 3, 2013
Trish Holder replied to Evan Riter's discussion Making crawlspaces conditioned space
"I have a conditioned crawl space. I think it is well worthwhile. You can read more about why I like it here: http://www.greenspirationhome.com/?p=1033"
Dec 31, 2012
Carlos Espinoza replied to Evan Riter's discussion Making crawlspaces conditioned space
"TWO-PART WEBINAR SERIES: California Crawl Spaces: Integrated Solutions for Healthy Homes & Deep Energy Reductions: http://thousandhomechallenge.com/thc-webinars-retrofitting-ca-crawl-spaces Great and surprising information."
Dec 28, 2012
Craig A. Lawson replied to Evan Riter's discussion Making crawlspaces conditioned space
"Should have qualified our location. Climate Zone 2, Santa Rosa where we had 1580 HDD in 2011 and have 1453 HDD to date.  So given "our mild climate zone," does anyone have data that supports the additional expense for a…"
Dec 25, 2012
Pat Dundon replied to Evan Riter's discussion Making crawlspaces conditioned space
"In crawl spaces I have encountered upstate NY 6800 HDD and generally wet walls are stone or block & stand 2ft or more above the exterior grade Interior grade is less than 2 ft below exterior grade Limited access to space, no storage Ducts and…"
Dec 25, 2012
Sean Lintow Sr replied to Evan Riter's discussion Making crawlspaces conditioned space
"To my knowledge no, though I do have to laugh at "mild climate" & California as that state falls under 7 diffrent climate zones & recall dealing with roads closed due to snow in June. Like almost everything it depends on where…"
Dec 25, 2012
Sean Lintow Sr replied to Evan Riter's discussion Making crawlspaces conditioned space
"Actually the one study I know of pulled the plug on a house in Flagstaff due to Radon levels increasing because it lost the dillution ability of a vented crawl. With that said depending on your area it still can be worth doing & just making…"
Dec 25, 2012
Evan Riter's discussion was featured

Making crawlspaces conditioned space

I am working, doing audits, with a contractor who tends to make basements, crawlspaces into conditioned space. Especially when all or most of the duct work is in the crawlspace. He does this by covering the floor, side walls and piers with heavy plastic. He then uses rigid foam insulation on the walls, foams the joints and above and seals the vents and access hatches. Then we duct seal and re-insulate.Has anyone been doing this for a while? Any unentended consquences?See More
Dec 24, 2012
dale conner replied to Evan Riter's discussion Making crawlspaces conditioned space
"sounds awesome! probably helps keep down radon as well"
Dec 23, 2012
Craig A. Lawson replied to Evan Riter's discussion Making crawlspaces conditioned space
"I'm curious if anyone has data on conditioned crawlspaces in mild climate zones, like California.  It seems all of the responses listed are from areas with more temperature/humidity extremes."
Dec 20, 2012
Jerry Nelson replied to Evan Riter's discussion Making crawlspaces conditioned space
"In cold climates using the HVAC system to condition the crawl space is in most cases the best way to provide the comfort factor the homeowners expect from a new system. Leaving the crawl space unconditioned leaves the floors cold that can lead to…"
Dec 19, 2012
CrawlSpaceMoisture replied to Evan Riter's discussion Making crawlspaces conditioned space
"As always, check your state code.  If you're using HVAC air, you may be required to insulate the walls of your crawl space.  That could lead to higher initial costs than just getting the dehumidifier. While insulated and conditioned…"
Dec 18, 2012
Rob Orchard replied to Evan Riter's discussion Making crawlspaces conditioned space
"Most of the experts (EPA, DOE, Advanced Energy) recommend conditioning an encapsulated crawlspace using 1CFM from existing ductwork if available. We find that  is more cost effective than buying and running a dehumidifer. Of course, sometimes…"
Dec 18, 2012
Jerry Nelson replied to Evan Riter's discussion Making crawlspaces conditioned space
"Hi Derin We would normally seal the duct to make sure we are getting the most efficient, and cost effective return for our customer. Normally return air is not taken from  sealed crawl, so any air that would enter the supply air system could…"
Jan 28, 2012
CrawlSpaceMoisture replied to Evan Riter's discussion Making crawlspaces conditioned space
"Well, there are so many factors to review with your local code enforcement: 1. 3" gap at top of insulation from foundation wall 2. insulation offset from ground 3. appropriateness of foam board insulation in crawlspace (Thermax, for example,…"
Jan 26, 2012
Derin Williams replied to Evan Riter's discussion Making crawlspaces conditioned space
"Jerry,   Why duct seal when the ducts are brought into conditioned space? Maybe to improve air flow to the registers?   Thanks"
Jan 26, 2012

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Bay area green buisness program
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BPI
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Audits, insulation, air sealing, solar

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At 1:43pm on January 17, 2012, Diane Chojnowski said…

Hi Evan,

Welcome to Home Energy Pros! 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!

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