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Community and Q&A

HRV intake below grade?

KrisCurrie | Posted in Energy Efficiency and Durability on

Is there any benefit to running X amount of pipe below frost grade to pre-heat/ cool intake air to an HRV? Would this not increase the operating performance of the HRV?
Thanks,
Kris

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Related Questions

Replies

  1. GBA Editor
    Martin Holladay | | #1

    Kris,
    This type of duct, called an "earth tube," has risks as well as potential benefits. To read more on the issue, see Do Earth Tubes Make Any Sense?

  2. KrisCurrie | | #2

    Great thanks Martin

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