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Jan 11, 2010 06:14 AM

Tankless, point-of-use water heater for coffee & tea

My husband got me a 12-cup French Press coffee pot for Christmas (only $2 at Goodwill, no less -- what a bargain!). We have a Bunn coffee maker which brews a fine pot of Joe, but there's nothing like French Press!

We've been enjoying it several times a week and think we'd like a point of use water heater for the kitchen sink; it would cost less in electricity than boiling 51oz of water on the stove each morning. The true benefit would be stumbling into the kitchen and having that hot water at the ready. ;)

Do any of you have a tankless water heater for under your kitchen sink? What's an inexpensive model that will heat up to 190 degrees for our coffee?

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  1. Wouldn't you rather have an electric kettle? Boils water superfast, never "stale" water, easy to use & easy to clean.


      We had one of these at work. Nice temp for brewing tea, not quite hot enough to do coffee well. (my guess it is the temp of water coming out of most auto drip machines; 200F is ideal)

      5 Replies
      1. re: MikeB3542

        huh? Tea needs to be brewed hotter than coffee. Tea needs to be 100 degrees.
        *edit* celcius, as in boiling

        1. re: Soop

          "Tea needs to be brewed hotter than coffee."

          Not true -- it depends on the tea you're brewing:


          1. re: Joe Blowe

            Well, I never knew that. And it actually says 99 degrees for black tea.

            However, I don't think that can be quite right with teabags. I find 30 seconds for a teabag in a mug (with agitation) is quite perfect.
            Green tea, I'd agree with about 2 minutes, any longer and it gets bitter, as does black tea.

            I also didn't know that boiling water tips the oxidisation of the water like that; I've recently been in the habit of boiling EXACTLY as much as I need for one or two cups, as I heard that re-boiling water deoxidises it, which is detrimental to taste.

            But I'm pretty lucky; good teabags + delicious water + fairly good technique produces an outstanding cup. Brings a tear to one's eye.

            1. re: Soop

              Please that the 99 degrees is Celsuis. For Black tea you need 212 a full rolling boil...for best brewing results.

              Green & white teas take lower gives excellent guidance

              1. re: fauchon

                Yeah, I know it's celcius (I'm from England, so it's natural for me). TBH I'm not sure how much difference 1 degree would make.

      2. Please explain why you think a built-in hot water dispenser running 24/7/365 will use LESS electricity than boiling water on your electric burner??? Or less than a electric water kettle?

        As I've posted *many* times now, IMNSHO the best appliance for hot water in the kitchen is a Zojirushi hot water dispenser ( ). We have a CD-LCC50, and we wouldn't part with it: Three stable temp settings, 5 liter capacity, cheaper than a built-in unit, uses little power, etc.

        AND, you can easily turn it off (and stow it away) when you don't need hot water.

        1 Reply
        1. re: Joe Blowe

          The Zojirushi hot water heater/dispensers are great...especially the 'new generation' VE hybrid ones which save up to 60% electricity compared to their 'normal' water heaters. This is because of the VE technology where you can press a button and a vacuum is turned on conserving the water temperature and switching the power off completely.

          We own a CV-CSQ30 (UK model), US model is possibly a CV-DSC and comes in a range of Joe above we wouldn't be without ours, hot water at the press of a button and doesn't cost too much to run either!

          1. I agree with some of what's been said but...

            Constant hot water heaters use considerably more electricity than an 1750 watt electric kettle. Rarely do the manufacturers advertise the electrical usage in 'constant temperature' mode. My advice would be to get an electric kettle. You can pick one up in Walmart for less than $30. It will boil two cups of tap water in 2 to 2-1/2 minutes. It takes that long to get your cups and press ready.

            The Everpure model heats water to 190F which is not hot enough for black / orange pekoe tea. It is also too cool to pour through a stand alone filter for coffee but would be OK (ish) with a French press. As fauchon says water gets stale ( and 'de-oxygenated') This is not good for tea.

            190 is about the same temperature that water boils at 8000ft. Black tea at that altitude is pretty disgusting. Coffee is not brilliant either. A cup of tea in an aircraft will convince you of this if you are not a skier. It is good for hot chocolate though.

            Point-of-use heaters, however, are efficient. These are common in many parts of Europe. The 'good' ones need to be plumbed in and if they are electric will have a dedicated electrical ciruit that should be GFI protected. Note that a 120V POU device will have a slow flow rate.