›
Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

electric tankless water heater

franklinsfarmsfranklinsfarms Posts: 2Member
in Radiant Heating
about to make decisions on which water heater to buy, wanted a Takagi but they only do gas heaters.
Hoping to eventually run the system on solar (or at least partially) which is why electric.
Existing wooden floor on top of which I will run pet hose and then a new subfloor and a finish floor.
2000 sq. ft. divided into 4 or 5 zones, plus one zone for a small bathroom downstairs from this with pet embedded into concrete.
Anyone have a good suggestion for a heater?
· Share on Google+

Comments

  • ZmanZman Posts: 4,973Member
    What you want is an electric boiler, not a water heater. There are quite a few on the market. Ideally you would use one with outdoor reset capabilities.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    · Share on Google+
  • Jamie HallJamie Hall Posts: 10,548Member
    Figure your heating load before you buy anything...

    As @Zman says, there are quite a few electric boilers on the market. Be sure that your electrical service can handle the load, however. As a WAG ballpark, you're likely to need at least 40 KW, which is over 150 amps on the normal residential 240 volt supply.

    If you are planning to eventually go to solar photovoltaic, also keep in mind that in full sun, you will need a minimum (with current technology) of 200 square meters of solar panel to supply that load -- but that the sun doesn't always shine, so you'll need more (a typical WAG is 8 times the area) or 1600 square meters of panel (about a third of an acre), plus storage batteries (that's variable with where you live, of course).
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
    · Share on Google+
  • hot_rodhot_rod Posts: 11,621Member
    May be worth looking into air to water heat pumps. Heat, cool and provide DHW at a much better efficiency, when compared to electric resistance boilers.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
    · Share on Google+
  • franklinsfarmsfranklinsfarms Posts: 2Member
    Thank you all, lots to look into.
    I did think of augmenting the solar part with wind technology.
    · Share on Google+
Sign In or Register to comment.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In Register

Quick Links

Categories