I'd like to have hot water at the sink but I don't want to go with a water heater. Any reason i couldn't use an instant system such as this: http://www.insinkerator.com/en-us/Household-Products/Water-Products/Pages/Model-Hot1.aspx It draws 4.3 amps, 115v. If I had a separate cord running to the 20 amp service, it should work, shouldn't it? As for the plumbing, that wouldn't be too hard to set up. Any thoughts?