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Electrical Wiring in the Home/110volt point of use water heaters


Q.  Are new point of use 110v tankless water heaters in private houses permitted under existing NEC for bathrooms / kitchens?

Q.  If so, will I save money/fuel costs over time by such new installation,
to replace existing 30 gallon 220 v. GE tank mfd. in year 2007 ?

         Thanks,    Mel


Q1.) Yes

Q2.) A 110 volt unit will only be good for the sink not the shower or bath tub. The shower will take a bigger 240 volt unit to supply the amount of hot water you would need and it would also supply the sink.

In theory point of use heaters should save money. However you need to factor in material and installation costs (plumbing & electric) to see how soon you would get a return on your investment to save money in the long run. Also a central 30 gallon hot water heater is a very simple and reliable piece of equipment. These "point of use" units have numerous parts you can have trouble with such as elements, relays, safety devices etc. The more POU's you have in the house the greater the potential for problems and money spent on repairs. You have to do the math and decide what is best for you.

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Licensed Master Electrician (32 years) 6165B Contractor in Closter New Jersey with 40 years total experience in Residential - Commercial - Industrial work. Emergency Service - General trouble shooting and repair work - ONAN & GENERAC generator installation - Paddle fans - Kitchen & Bath exhaust fans - AC lines - Smoke detectors - Telephone lines - Cable TV lines - Computer network cabling - Exterior lighting - Recessed lighting - Security lighting - (200 - 150 - 100 amp service up grades) - Electric Heat - New circuits - New appliance hook ups - and more ! FREE ESTIMATES 201-358-1552 Fully Insured


Licensed contractor in Closter New Jersey.

"The Frank Williams School of Electrical Construction". My dear old boss is 100 ! and still going God Bless him. I started working for "Tenafly Electric" right out of high school at 19. He was tough but I learned more working for him in 8 and half years than most guys. We did mostly industrial work while doing some commercial and residential so I was fortunate to be exposed to all 3 areas of electrical construction. The guys I worked with were all good guys and I stay in touch with some of them still. Most of us went into our own buisness's which says something about the caliber of the guys I worked with. We had some interesting clients : Wella Corp. of shampoo fame, Farah Fawcett etc, I didn't buy shampoo for 10 years. It was a great place to work. Pan Am the former airline just before they went under, another great place to work, nice clean environment. C&C Metals, the largest button manufacturer in the US at that time, a not so clean environment but a very interesting place to work, lots of machine's cranking out buttons of all kinds but you had to be on your toes, it was a potentially dangerous place to be . All kinds of action going on around you.

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