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    Anyone care to elaborate? Am I completely...

    Anyone care to elaborate? Am I completely misunderstanding the meaning and use of CPH?
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    Another question about CPH

    I realize this has been probably asked and discussed before, but I am still left trying to make full sense out of it... from reading some posts here it seems that the CPH settings is a MAX value that...
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    Thanks! My energy efficiency evaluation report...

    Thanks! My energy efficiency evaluation report says I have 4.09 Air Changes per Hour @50 Pa tested with a blower door. I have since blocked a make-up air supply in the basement so might be a tad...
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    Right, as I said - defrost is run internally by...

    Right, as I said - defrost is run internally by the HRV and it's completely independent from the thermostat. I meant the VisionPro IAQ can turn OFF scheduled ventilation, but not defrost

    So what...
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    Oddly it doesn't... But even if it had, would...

    Oddly it doesn't... But even if it had, would defeat the convenience of switching it OFF from the thermostat. There's a reason I paid for a VisionPro IAQ :)
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    I am located in Ottawa, Ontario and we just got...

    I am located in Ottawa, Ontario and we just got out of a week-long deep freeze (-13F). I am turning the ventilation OFF at the thermostat when it's really cold, so I don't over-dry the air but the...
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    When outside air temperature drops, defrost...

    When outside air temperature drops, defrost cycles are automatically run by the HRV every ~30 minutes even if I turn OFF ventilation in VisionPro IAQ. So I have no control over that. But the change...
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    Thanks TB, My issue with the HRV is an odd...

    Thanks TB,
    My issue with the HRV is an odd one... It has 4 speeds plus a standby mode and I have it hooked up and controlled by the thermostat (VisionPro IAQ using VNT1/2 terminals). The HRV...
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    Alternative to HRV

    Hi everyone, I am having an issue with my HRV and looking for either replacing it or other alternatives. In my searches I came upon this:

    http://www.plusaire.on.ca/

    and just wanted to ask if...
  10. Second floor return grill is well... on the...

    Second floor return grill is well... on the second floor :) so yes return air goes through TWO levels of wall cavities to reach the return trunk and unfortunately this is more than usual around here...
  11. Thanks Second Opinion I read this too in the...

    Thanks Second Opinion I read this too in the manual, but here's what's been said in another thread that instilled my doubts:
    ...
  12. So you all agree that a warmer wall will...

    So you all agree that a warmer wall will significantly affect the thermostat? Even with careful air sealing and an extra layer of insulation?

    I also thought about adding the remote sensor -...
  13. Thank you, but I already invested in the VP IAQ...

    Thank you, but I already invested in the VP IAQ and not quite ready to upgrade
  14. Thermostat affected by location - options?

    Hi everyone,
    I am having a comfort issue with my thermostat being installed on a wall that has a heating duct running inside (stupid builder). To make things worse I think the duct also leaks which...
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    Anyone has any thoughts on this? Have enough...

    Anyone has any thoughts on this? Have enough openings in the ducts (plugged), don't want to put another one unnecessarily

    Thanks
  16. OK I goofed, I thought being so small means it...

    OK I goofed, I thought being so small means it MUST be mitered. You're right, the 1-1/2" size is fooling me...

    So the 90s are "long" but the 45s are mitered (I checked their code against the...
  17. This is one other issue I want to raise with...

    This is one other issue I want to raise with them, but I am afraid they will brush it off as "that's the same duct sizing in all houses in the area and there's nothing to do about it". Hence why I am...
  18. The one in the picture above is made by IPEX and...

    The one in the picture above is made by IPEX and is a mitered 90
  19. Don't mean to argue, but... the installing...

    Don't mean to argue, but... the installing contractor has been around for about 20 years, and it's definitely not a flight by night. Now you have to realize the landscape in Ottawa (Canada) is...
  20. You mean "room for improvement" is an...

    You mean "room for improvement" is an understatement, right? Thanks for suggesting the long radius elbows, didn't even think of that. Deductions are almost 3 times less for these (8 down to 3 for 90...
  21. No, it's the original installation

    No, it's the original installation
  22. There is not much they can do outside, but on the...

    There is not much they can do outside, but on the inside I think there is room for improvement... What makes it challenging is the HRV that needs the room in front to open the door
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    HRV ducting improvement

    Hi everyone, I have another question for professionals here...

    When I bought my house I found the HRV was improperly installed (HRV exhaust was pulling hot air from furnace supply, and it's supply...
  24. It's not DIY by any stretch, I am just an HO...

    It's not DIY by any stretch, I am just an HO trying to make sure my furnace will last as long as possible. I am appreciative of all your comments and observations, that's my main reason for coming...
  25. Just to make sure I get this right... the exhaust...

    Just to make sure I get this right... the exhaust is the upper one in the picture, are you saying I should take out the termination 90 elbow and let the pipe open pointing upwards?

    What about the...
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