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bosch instant water heater

lee_7 Member Posts: 458
Thanks for all the info. Had no experience with bosch. I think I will pass.
Thanks again.


  • lee_7
    lee_7 Member Posts: 458

    i was looking at buying a Bosch instant water heater. Local HD has it on clearance for $99.00 from $500.00. Any thoughts or problems with this units. I believe it was a Bosch aquastar 125 model. Thanks for any input.
  • Big Ed_3
    Big Ed_3 Member Posts: 170

    Depends on your hot water needs... 50K btu per input will give you around 1GPM out in hot water .
  • Tony_23
    Tony_23 Member Posts: 1,033
    Not me

    You get what you pay for...

    I installed a Bosch once, by the book, threw the book away when the factory tech support said there were problems not addressed in the book. Waited 2 weeks for parts the factory had to send because the supplier wasn't informed (not his fault).

    Save your money, buy a Rinnai or a Noritz.
  • laurence salvatore_2
    laurence salvatore_2 Member Posts: 86

    I put one in once there were two bad sensors right out of the box that were no fun changing it worked great for a couple of days then flooded the customer's basement. It's been in the box in our shop for two years waiting for the 40 gal A.O. Smith to fail. The shop used to be a body shop with a slab floor and a large floor drain in the middle so the bosche can't hurt us. That was our one and only experience with Bosche. It may explain the 80% mark down. I would add Tagkagi to the above list of good alternatives.
  • Shawn Ford
    Shawn Ford Member Posts: 6

    I dont believe bosch allows for through the wall venting like Rinnai. I believe that Bosch needs a higher minimum waterflow to activate the burner sequence. Bosch has fewer (helpful) bells and whistles. Bosch has an additional turbine that needs oiling to prevent failure. One nice thing is that Bosch requires no electrical hookup, because the spark is generated by a water driven turbine for ignition. Just for general info, nearly one half of all of Bosch's Aquastar brand (only sold through HD I believe) are returned as defective. However there is nothing wrong with most of them, just improper instillation because they are so easy to get ahold of. Hence no class for the special problems with tankless installs. A basic Rinnai setup with plumbing kit will cost around a grand and is the better of the tankless heaters, but for 90 bucks that might sway me to buy it for my house.
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