Grundfos Alpha Vs. Taco Bumblebee?

NNYorker Posted By NNYorker, Feb 24, 2015 at 9:48 PM

  1. mooselake

    mooselake
    Member 2.
    NULL
    

    Jan 30, 2010
    35
    7
    Loc:
    Upper Michigan
    Long time, no updates. In the process of replacing 4 older Grundfos 15-42 and 15-58 circulator pumps with Grundfos Alpha1. Michigan has energy rebates of $100 per pump (I called the managing organization and they will rebate at least 4 pumps). With the Alpha 1 15-55F costing around $130 each (from the big online HVAC supply) it's a no brainer. My original Alpha, now called an Alpha 2 has "Autoadapt" to select which mode to use, the Alpha 1 has 3 constant pressure modes. My system is zoned with pumps, and all but one zone is a constant load. For a substantial discount I can push a button to select the mode. With my first converted zone, around 40' of fintube, the lowest power level , constant pressure level I, is 12W and 3gpm per the display. Hard to beat that. The existing autoadapting Alpha will go on the only zone with zone valves. I think the A1 would handle this just fine, but already have the unnumbered alpha. Today's project is to install the remaining pumps now that I have the expensive special gaskets for the old Grundfos isolation flanges installed around the mid 80s with most of the now being replaced (so old they're blue) pumps.

    The Taco pumps are a bit cheaper but lack the display. With @Karl_northwind 's comment, and the blinken lights/gadget guy attitude, it was worth the few extra bucks.

    The bumblebee is still going strong, but we're snowbirding this winter and will drain the OWB. Tough decision, 30 feet of snow or a winter sitting by the pool...
     
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  2. mooselake

    mooselake
    Member 2.
    NULL
    

    Jan 30, 2010
    35
    7
    Loc:
    Upper Michigan
    Got the rebates a couple months ago, 4 close to free alpha1s. Propane heat is staying where we set it according to the neighbor kid who checks the house twice a week, and the thermometer strategically placed to be visible in the Amazon Cloud Cam (AmmoCam?).

    Anitfreezed the boiler and winterized the house just in case.

    Poolside still beating snow shoveling. Artic blasts and bomb cyclone are just a news story in SW FL. No 250 inches of snow here.
     
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  3. huffdawg

    huffdawg
    Minister of Fire 2.
    NULL
    

    Oct 3, 2009
    1,447
    114
    Loc:
    British Columbia Canada
    I had an alpha for 2yrs and it packed it in , not sure why .replaced with manual grundfoss circ pump which has been in the same application for the last 5 years.
     
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  4. Karl_northwind

    Karl_northwind
    Minister of Fire 2.
    NULL
    

    Feb 13, 2012
    511
    87
    Loc:
    Central Wi.
    I just had my first alpha go, about 2 years old. I'm guessing power issue, as they lost all sorts of other electronics at the same time.
     
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  5. TCaldwell

    TCaldwell
    Minister of Fire 2.
    NULL
    

    Oct 26, 2007
    1,092
    126
    Loc:
    860-868-9014 h 203 948 0864 c nw corner ct.
    I have 6 alphas, 5 years and no problems yet
     
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  6. huffdawg

    huffdawg
    Minister of Fire 2.
    NULL
    

    Oct 3, 2009
    1,447
    114
    Loc:
    British Columbia Canada
    Ya, I kinda think they don't like power outages . As I had quite a few then.
     
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