International Association of Certified Home Inspectors
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| Plumbing Inspections Contains discussions about plumbing. |
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#1
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Does anyone know if there are any codes or requirements or best practices about hooking up two conventionally drafted water heaters in parallel or in series?
Thanks, in advance. Will Decker, CMI ILL License # 450.0002240 Board Certified Master Inspector Decker Home Services, LLC Chicago and Northern Suburban Home Inspections Office: (847) 676-8393 Cell: (847) 609-2345 Home: (847) 673-2702 wjd@DeckerHomeServices.com www.DeckerHomeServices.com Learn, Educate, Serve and have fun doing it! |
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#2
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Will, I have seen them both ways, with them separate or combined in series, both for plumbing and vent. I don't know of any installation requirements that go either way.
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#3
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No codes or requirements that I know of but regarding best practices I had a water heater added to my system several years ago. They added it in series with the existing one and the one up stream was the only one that came on whenever water was needed/heated. I had them switch to a parallel hookup, where the pipe lengths were uniform, and the both came on when water was needed/heated. InterNachi Awards Portal: http://co.nachi.org/inachiawards/ ____________________________________________ "An Education, not just an Inspection" Larry Kage, CMI Lake Ann (Traverse City), Michigan 49650 231 929 3525 Professional Inspector serving the Traverse City, Michigan area and beyond.
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#4
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Series hook-up is worthless. Parallel (tandem) is the preferred and most efficient method.
You will not find any building codes that address dual-heater installations. IF YOUR INSPECTOR IS NOT USING THERMAL IMAGING, YOU'RE NOT GETTING THE WHOLE PICTURE ® Jeff PopeJPI Home Inspection Service Santa Clarita CA (661) 212-0738 Santa Clarita Home Inspection http://www.MyInspector.net |
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#5
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Thanks, Jeff. I agree. Just looking for some back-up.
Will Decker, CMI ILL License # 450.0002240 Board Certified Master Inspector Decker Home Services, LLC Chicago and Northern Suburban Home Inspections Office: (847) 676-8393 Cell: (847) 609-2345 Home: (847) 673-2702 wjd@DeckerHomeServices.com www.DeckerHomeServices.com Learn, Educate, Serve and have fun doing it! |
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#6
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The only way dual heaters are addressed is how gas or electric is run to them (pipe sizing and load etc.). I agree with Jeff, parallel is the only way to go.
In the world view we are all important and our mere existence effects all life. Jack Gilleland Home Inspection Services Clayton Commercial, Multifamily, and Residential jgilleland1@att.net Ohio_Commercial and_Home_Inspections activerain |
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