GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter X Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

How about a commercial one-room HRV for an off-grid home?

rockies63 | Posted in Energy Efficiency and Durability on

In one of my threads Martin suggested using a small bath fan rated at about 4 watts to ventilate my off grid cabin. BC building  codes require a ventilation unit that runs 24/7 and I’m hesitant to rely on a fan that is basically enclosed inside the bathroom in order to ventilate the whole cabin.

Then someone mentioned a small commercial HRV in another thread.

On the lowest setting it uses 4.2 watts (listed under “specifications) and can ventilate up to 650 sq’ (the size of my cabin. This unit should work, shouldn’t it?

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. charlie_sullivan | | #1

    Looks good. The medium speed setting of 26 CFM is pretty close to the 23 you decided you needed, with room to adjust up or down from there.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |