# Posted: 11 May 2016 09:10
Bancroft, most of these erv/hrv systems use very little power. They are essentially small fans.
I posted this erv, perfect for small cabins, available at a big box near you (US) for less than 450.
It uses a whopping 6 watts at full flow.
And the cool element of this design is it breathes. So rather than passing stale and fresh air by each other separated by a heat/cool transfer medium; it blows room air out, draws fresh air in. Passing the air through a single ceramic exchanger. This allows the unit to operate more efficiently and, for high humidity summer/very cold winter areas like mine. Hopefully more successfully than a standard ERV. Which isn't recommended for my climate zone (cold weather).