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Thread: pressure booster setups for low water pressure.

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    DIY Junior Member bajaman's Avatar
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    Default pressure booster setups for low water pressure.

    I have a Bosch Comfort II tankless heater that I am pleased with but I live in Baja and we have low water pressure. Looking for any advice on an inexpensive setup to boost pressure. I have read about an rv pump installed but can't find the article now.
    thanks for any help...

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    IF you have sufficient volume, then boosting the pressure works. If there isn't enough volume coming in, then you'll burn the pump up quickly. This Olde House has a session on installing one, which may work as a good reference if you check their website and watch it. Basically, it has a check valve, a small bladder tank that holds some water under pressure so the pump doesn't need to run with each water use, and obviously the pump. Basically, it's like a mini well pump system.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    DIYer, not in the trades LLigetfa's Avatar
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    I'm not familiar with the Bosch Comfort II but many tankless units will flow restrict when they reach design capacity. Boosting the pressure could just cause it to flow restrict more.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    The Baja might be using gravity fed, and a booster pump would help. As I said, though, don't let the tank run dry or the pump is toast (or, you could use a float switch, if there's one involved to shut it off).
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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