[Greenbuilding] [BULK] HRVs

[Keith Winston]

Typically HRV's and ERV's are not used for kitchen stove exhaust for 
just this reason. I'm not sure it's a safety issue so much as a "life of 
your HRV" issue.

In any case, an HRV doesn't typically pull the amount of air that a hood 
(especially commercial) is likely to, perhaps 100 cfm vs. 500+ cfm.

Keith


Lawrence Lile wrote:
>> Is the HRV (vs a simpler exhaust fan) also de rigeur? HRVs seem useless
>>     
>
> in most US homes, which naturally leak about 10 times more fresh air 
> than required.
>
> Perhaps an HRV would be useful in a tight home such as Rob's.  
>
> I am wondering about using an HRV with grease-laden air from a kitchen
> vent?  Is there a safety issue or a cleaning issue with this?  I'd have
> the same question about dryer exhaust, laden with lint.  
>
> How well does that metal filter that comes with the kitchen fans
> mitigate this problem?  If this were a commercial installation, then
> no-how no-way would any fire marshall allow kitchen exhaust to go
> through an HRV.  A residential kitchen might not have the same grease
> load, but I have noticed a gummy layer of stuff that will build up on
> cabinets near the stove between cleanings in homes that use a lot of
> frying.  
>
> 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 Nick Pine
> Sent: Thursday, November 29, 2007 6:57 AM
> To: greenbuilding at listserv.repp.org
> Subject: [BULK] [Greenbuilding] HRVs
> Importance: Low
>
>  "Robert Tom" <ArchiLogic at yahoo.ca> writes:
>
>   
>> ... I installed an exhaust vent in the ceiling at the opposite end of 
>> the kitchen from the stove, that is ducted to the HRV, as is de rigeur.
>>     
>
> Is the HRV (vs a simpler exhaust fan) also de rigeur? HRVs seem useless 
> in most US homes, which naturally leak about 10 times more fresh air 
> than required.
>
> Nick
>
>
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