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  1. Yeah, I'm pretty sure it's at the highest speed. ...

    Yeah, I'm pretty sure it's at the highest speed. The original installation used a smaller pump but we went to this one to try and increase temps by increasing flow.
  2. I'm told the pump is a Grundfos UPS26-99FC.

    I'm told the pump is a Grundfos UPS26-99FC.
  3. Total loops is 13. I've sent an email off asking...

    Total loops is 13. I've sent an email off asking for the model of the pump.
  4. I assume it's the circ pump your wanting the...

    I assume it's the circ pump your wanting the specs for? I can email my HVAC guy and ask for the model #.
  5. Thanks, everyone, for your thoughts. I think the...

    Thanks, everyone, for your thoughts. I think the insulation isn't an issue but I'm going to inspect and confirm. I like the idea of determining flow rate from pressure diff, but I agree, it might...
  6. The loop lengths appear to be around 300'. There...

    The loop lengths appear to be around 300'. There are 7 upstairs with three control zones, and 6 downstairs with 5 control zones. I'm currently away from home so I don't have the pump info in front...
  7. There are balance valves although they are all...

    There are balance valves although they are all fully open. But in my mind we've ruled this out by the fact that a problem zone doesn't change even when all the other zones are secured.
  8. The downstairs is slab on grade. One of the...

    The downstairs is slab on grade. One of the problem rooms is down there. Upstairs we have tubes set in concrete on top of the subfloor with plank alder finish floor. We've had him confirm the...
  9. Radiant floor not coming up to temp in two rooms

    Hello,

    We have a new house with radiant floor heating. The heat is provided by an air-to-water heat pump. For the most part the system works well. But we have two rooms that never quite get up...
  10. So how do you feel about the hundreds of billions...

    So how do you feel about the hundreds of billions of dollars in subsidies paid to fossil fuel companies?


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  11. Forget Right an Left. Forget Democrats and...

    Forget Right an Left. Forget Democrats and Republicans. The vast majority of actual scientists, who might be Democrat or Republican in their political views, accept climate change as a reality. This...
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