(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 6 of 6

Thread: Recommended dishwasher for tankless??

  1. #1
    DIY Member locus123's Avatar
    Join Date
    Sep 2009
    Location
    Ontario
    Posts
    31

    Default Recommended dishwasher for tankless??

    So we already made one mistake when we had our Whirlpool Duet Sport HE washer installed, then realized that the way it constantly turns on and turns off doesn't allow it to draw any hot water from the tankless.

    Is there a recommended dishwasher for those of us with tankless water heaters? I was going to go for the Bosch Evolution 300, but even Bosch doesn't recommend it. Even if not "recommended", what about those out there with tankless - do their dishwashers do a decent job? are there any that are known to work well?

  2. #2
    DIY Member locus123's Avatar
    Join Date
    Sep 2009
    Location
    Ontario
    Posts
    31

    Default

    Just as a test, I turned on my kitchen tap from cold, and it took 1.37 gallons (22 cups) of cold water before the hot was hot. That was with the tap on full.

    I also checked the tankless, and it will fire once 0.66gpm are flowing through it. Obviously, any device attached to it shouldn't draw at a rate less than that. The device should also draw "constantly" or in chunks at a time, and not tiny little sips since the tankless needs that second to fire itself up (this is what kills our HE clothes washer).

    Some dishwashers have a flow water heater which should pump the temperature up, but the Bosch's also use the hot water for a condensation drying process, and that's where they say the tankless will falter.

  3. #3
    DIY Member ChuckS's Avatar
    Join Date
    Mar 2009
    Location
    Aurora, CO
    Posts
    96

    Default

    It'd be best to have a dishwasher to heat the water if you have a tankless. We turn on the kitchen facet until the water gets hot then tun on the diswasher. At least they wash with hot water.

  4. #4
    DIY Junior Member Jallengri's Avatar
    Join Date
    Jul 2010
    Location
    Maine
    Posts
    1

    Default

    We feel your pain...I tried piping the supply line to the washer directly from the boiler . No going through the whole house plumbing to demand a little water.Also my D/W has a heater in it as well,it raises the temp by 10 degrees.hope this helps.jallengri

  5. #5
    Illinois Licensed Plumber SewerRatz's Avatar
    Join Date
    Nov 2008
    Location
    Chicago, IL
    Posts
    1,705

    Default

    Ah the wonderful issues of owning a tankless water heater. I have heard many people having to turn the water on at the kitchen faucet to get it running hot so the dishwasher can get hot water. Yes many dishwashers have a heating element to get the water hotter than the supplied water, but they are not really meant to do straight cold water. Best suggestion I can give is save your money and wash the dishes by hand. Other than that, you will have to plumb in a small electric heater to handle the dishwasher and clothes washing machine short cycles.

  6. #6
    DIY Junior Member blazer45's Avatar
    Join Date
    Oct 2010
    Location
    Australia
    Posts
    10

    Default

    Any dishwasher will work that can be installed on a cold water supply that is, the dishwasher has internal water heating that is assured of reaching the target temperature. Some dishwashers have a booster heater, but are time-limited and don't necessarily reach the target temperature if the incoming water isn't hot enough.

Similar Threads

  1. What is Recommended Water Pressure??
    By wraujr in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 11
    Last Post: 11-01-2010, 06:07 PM
  2. using tankless water heater with dishwasher and clothes washer
    By rafael in forum Tankless Water Heater Forum
    Replies: 9
    Last Post: 06-03-2010, 06:07 AM
  3. recommended low profile toilet?
    By tracyi in forum Toilet Forum discussions
    Replies: 4
    Last Post: 03-09-2009, 08:52 PM
  4. Recommended Suppliers in SoCal?
    By az1324 in forum Remodel Forum & Blog
    Replies: 6
    Last Post: 07-28-2008, 10:20 AM
  5. Recommended DWV book?
    By Nate R in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 8
    Last Post: 08-13-2007, 07:17 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •