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07-17-2008, 10:14 AM
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Member
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Join Date: Mar 2007
Location: Fuquay Varina, NC
Posts: 367
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Water Heater sizing
This may have been a subject before but I could not find anything.
Three bedroom house with 2 full baths. Had a gas direct vent water heater size unknown because it was replaced with a 40 Gal electric water heater when the upstairs was finished off. They added another bedroom and bathroom upstairs. So the home is now 4 bedroom and 3 full baths. One bath has garden tub. A 40 gal. WH is undersized is it not? By what means do they calculate the size of a water heater for a home. Is there anything written?
Thanks
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07-17-2008, 05:37 PM
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Member
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Join Date: Mar 2007
Location: York SC Licensed in NC and SC
Posts: 235
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Re: Water Heater sizing
Lots of recommendations but have not seen actual code.
50 gal electric would be considered on the low end for that house.
75 gal electric would be considered good.
A hot water circulation loop would help a lot if they keep the 40 gal.
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07-17-2008, 05:49 PM
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Member
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Join Date: Mar 2007
Location: Dallas, Texas
Posts: 1,425
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Re: Water Heater sizing
State water heater manufacturer has a table on their web site.
State Industries | Residential Sizing Guide
__________________
Jim Luttrall
Mr. Inspector.net, Inc.
Allen, Texas 75002
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07-18-2008, 04:10 AM
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Member
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Join Date: Mar 2007
Location: Fuquay Varina, NC
Posts: 367
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Re: Water Heater sizing
Thanks guy's
You would think they would come up with some set standards in the IRC
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07-18-2008, 06:57 AM
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Member
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Join Date: Mar 2007
Location: Cartersville, GA
Posts: 69
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Re: Water Heater sizing
I'm a little late to this party, but, for what it's worth, Georgia adds this table to the end of chapter 5 of the IPC (we don't use the IRC for plumbing around these parts) .....
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