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  #1  
Old 5/12/12, 12:49 PM
Jeffrey Chase's Avatar
Jeffrey Chase Jeffrey Chase is offline
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Default Water Heater vent through side of house

Is it permitted that a natural draft gas water heater exhaust vent through the side of a house? What would you recommend in your report if you saw this?
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  #2  
Old 5/12/12, 12:58 PM
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David A. Andersen, TN HI# 40 David A. Andersen, TN HI# 40 is offline
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Default Re: Water Heater vent through side of house

Does it have an induced draft in the flue?



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  #3  
Old 5/12/12, 1:10 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

Thanks for the reply. No -it is just natural drafting.
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  #4  
Old 5/12/12, 1:17 PM
Christopher Currins, CMI Christopher Currins, CMI is offline
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Default Re: Water Heater vent through side of house

Do you have a photo?
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  #5  
Old 5/12/12, 1:20 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

No I don't. In hindsight, I should have taken one.
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  #6  
Old 5/12/12, 1:41 PM
Christopher Currins, CMI Christopher Currins, CMI is offline
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Default Re: Water Heater vent through side of house

If the water heater has a draft hood, a "natural draft" type water heater, not induced draft or a power vent, it is required to be connected to the chimney, which could be a b-vent.
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  #7  
Old 5/12/12, 1:52 PM
Christopher Currins, CMI Christopher Currins, CMI is offline
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Default Re: Water Heater vent through side of house

Did the exhaust look similar to this?
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water-heater-vent-through-side-house-hpim9982.jpg   water-heater-vent-through-side-house-hpim9984.jpg  
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  #8  
Old 5/12/12, 1:54 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

Chris - thanks for the advice and your fast reply.
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  #9  
Old 5/12/12, 1:57 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

There is no draft fan and the vent goes through the block wall near the top below the sill plate.
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  #10  
Old 5/12/12, 1:58 PM
Larry Kage, CMI Larry Kage, CMI is offline
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Default Re: Water Heater vent through side of house

From Hart & Cooley Installation Instructions:

Hart & Cooley Type B gas vent pipe and fittings are
Underwriters Laboratories-tested and listed to
Standard 441 for use with listed gas-fired appliances
that have been certified for use with Type B gas vent.
B-Vent is intended for neutral or negative draft
applications. It is designed for vertical installations
(including laterals) but may be used for horizontal
applications with a draft-inducing fan located such
that all indoor portions of the vent are under negative
pressure.

http://www.hartandcooley.com/Libraries/Product_Installation/3_-12_in_Instructions.sflb.ashx




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The above post represents my personal opinion.
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  #11  
Old 5/12/12, 2:01 PM
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Michael Larson Michael Larson is online now
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Default Re: Water Heater vent through side of house

Quote:
Originally Posted by jchase View Post
Is it permitted that a natural draft gas water heater exhaust vent through the side of a house? What would you recommend in your report if you saw this?
Unlikely.

If you have the water heater make and model, check the installation guide.



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  #12  
Old 5/12/12, 2:19 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

I am disappointed that the Nachi plumbing course water heater section doesn't address this (that I could find). Is this something a home inspector should know or is it considered a specialty?
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  #13  
Old 5/12/12, 2:25 PM
Christopher Currins, CMI Christopher Currins, CMI is offline
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Default Re: Water Heater vent through side of house

It's something every home inspector should know.

Have you taken this one yet?
http://www.nachi.tv/water-heaters/in...ater-tanks.htm
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  #14  
Old 5/12/12, 2:45 PM
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Jeffrey Chase Jeffrey Chase is offline
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Default Re: Water Heater vent through side of house

Unfortunately the Nachi TV course doesn't address this either. I wasn't able to find anything relevant on the Nachi.org web site and am also disappointed in that. Larry identified a good resource.

Gentlemen - thank you for all your info and help.
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  #15  
Old 5/12/12, 2:59 PM
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Jeffrey R. Jonas Jeffrey R. Jonas is online now
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Default Re: Water Heater vent through side of house

Quote:
Originally Posted by jchase View Post
Unfortunately the Nachi TV course doesn't address this either. I wasn't able to find anything relevant on the Nachi.org web site and am also disappointed in that. Larry identified a good resource.

Gentlemen - thank you for all your info and help.
Yes... even educators fall into this scenario from time to time...

"You don't know, what you don't know, until you know it".



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