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Is there a way (other than collecting water and heating it on the stove ) to get hot/warm water from the tap without having to alter existing plumbing or electrical wiring ?

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Not sure what you are asking for. Any heating option like a point of use or on demand heater at the tap is going to require some minor plumbing and an electrical hook-up. My question is why is there not hot water there now? Are you trying to get hot water from a cold water feed?? –  shirlock homes Mar 12 at 10:04
    
@shirlockhomes Yes I am trying to get hot water from a cold water feed. Trying to understand how I can accomplish this with minimal structural changes to the house. –  moonstar2001 Mar 12 at 10:11
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No. Adding a water heater pretty much requires altering the plumbing, and if it's electric, the wiring as well. –  Ecnerwal Mar 12 at 20:17
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3 Answers 3

Check out the 1 or 2 gallon point of use heaters that install under the sink. They run on 120VAC and are fairly easy to install with minimal plumbing changes. There are also above sink mounted hot taps that mount into the sprayer hole in the sink. These are usually used for hot water for coffee/tea etc. Both of these type products are available at your local home improvement centers.

Here are several examples: http://www.lowes.com/Plumbing/Water-Heaters/Point-of-Use-Water-Heaters/_/N-1z11qho/pl#!

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There will need to be a dedicated electric feed to supply power to either of these options. So a new line will need to be run from the breaker panel to either you choose. Sorry shirlock, just getting that important little bit out there to, tag teaming, so to speak.... –  Jack Mar 12 at 12:46
    
No Problem Jack. the whole idea is to give good advice on here. –  shirlock homes Mar 12 at 17:00
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@Jack - Many of those point of use things plug right into a 110 volt outlet. Commonly you already have one under a kitchen sink for a dishwasher. –  Chase Mar 12 at 23:40
    
There have been many installed in the houses I worked on. They all took a dedicated circuit, maybe nowadays it is not needed, but it was in my instances. The electricians always ran a spare circuit to the sink base as a back up too, for future use. Many times it came in handy when the owners wanted to add something. Usually an Insta-Hot... –  Jack Mar 12 at 23:57
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You can buy an electric tea kettle. It looks like a coffee thermos but it has a cord. No modifications to the plumbing needed!

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:-) I'd like to have running hot water from the tap. –  moonstar2001 Mar 12 at 15:35
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Small under the counter HW Heaters usually come with a stranded 3 prong plug. Drill a hole to the basement under the sink trough the cabinet and plug it in with an extension cord. Not exactly my preferred method of wiring something, but I think even in Chicago (anal codes) it would be permissible so long as it is plugged into a GFCI. Even if it was hard-wired it still should be on a GFCI breaker as it will be in close proximity of water. (code is 6ft from water requires a GFCI)...FYI all non-dedicated circuits in your kitchen should be GFCI protected. (the ones that are assessable, not the one for your fridge\stove cause GFCI's break a lot)

You need an extension cord and two flexible supply lines. If there is only one pipe coming in (cold) then you will need a new valve with 2 take offs or a 'T' and some nipples if you know how to pipe fit.

From the new valve or 'T' one goes to the cold on the faucet, the other to the 'in' on the new tank. The 'out' from the tank goes to the hot on the faucet.

Assuming drilling a hole gets to somewhere with an outlet this could be done in about an hour providing all the correct sized supply lines are on hand, a T, 3 nipples, a good heavy cord, and of course a HW tank. Put a pan under it for when it starts to leak in a few years.

Good luck.

-If that sink has power under it for a disposal everything you need is right there for you. Assuming the switch for it is a button on the sink and not on the wall. Meaning it needs to be on a non-switched circuit or it would only work when the disposal is running. If you have EMT (conduit) pulling some wires from the switch to a new outlet below the sink shouldn't be that big a deal. If its romex your kinda out of luck unless its 3 wire or more and one of the conductors isn't being used. Don't cheat and use the green or bare wire.\

-depending on which way the power comes from even if it is a switch on the wall it may be always-on power down there.

-stealing power from the dishwasher is an option, but don't be surprised when the breaker trips as both items have electric heat coils. I wouldn't even attempt this unless its a 20a breaker.

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-1 Drilling a hole through walls/floors to run an extension cord through is a bad ifea, a fire hazard, and probably a code violation. Dont set your house on fire to save a couple bucks. Do it properly. –  Grant Mar 12 at 22:58
    
I agree but "properly" is out of the scope of this question as the answer would be 'no' –  Mazura Mar 12 at 23:16
    
sometimes the correct answer is "No." –  Grant Mar 12 at 23:39
    
The retired fireman across the street pulled this stunt. I had to deal with helping clean up the estate, it was a nightmare with all the "special wiring". Of course, he could plead the fifth as drinking off quite a few of them were involved in most of the decisions he made. Totally against code or common sense to recommend running extension cords like this. Fire is in your future. –  Fiasco Labs Apr 1 at 16:33
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