Twinfresh Comfo
cody_fischer
| Posted in Mechanicals on
Does anyone know if the Twinfresh Comfo continues to function as both intake and exhaust in climate zone 6 year round?
I’m wondering if it suffers from the same limitation as the Panasonic WhisperComfort ERV, which is exhaust only in climate zone 6 from November – March.
Looking for a viable (lower cost than Lunos) year round fresh air solution for 620 SF apartment units.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Search and download construction details
Replies
Hi CMFischer,
I will give your post a bump. I don't have any experience with TwinFresh, but I did find the user manual at https://ventilation-system.com/uploads/download/v91en_03preview.pdf. Page 9 has a diagram that suggests the unit remains operational at -10 degree C (14 degrees F). But I would confirm the operational range of the unit you are considering.
All of these use similar ceramic core for enthalpy exchange. Since they won't condense water like an aluminum core, these tend to be pretty robust and won't freeze up. This all assumes If somebody is not running a humidifier. Lunos does recommend turning them off in extreme cold weather, so there are definitely limits.
You still need a pair of these per unit wired together to prevent depressurizing the place. I also don't know how quiet these are and whether you can hear it changing directions. I would put it in a place where people won't object to this, maybe above the intake of the mini split or one there and one in the bathroom. If it is in the bedroom, people might tend to turn it off.
I've got a Twinfresh Comfo and thought I'd chime in. It is pretty quiet. On low and medium fan speed, almost inaudible... sound of EXTREMELY quiet fan. On high fan speed, it's audible, but still very quiet. And yes, on high fan speed you can hear the fan changing speed because basically as the fan slows down to reverse, the noise goes away, and then as the fan speeds back up in the reverse direction, the noise comes back.
My guess would be that at low fan speed, an average person in an average house basically wouldn't notice the noise. On medium you probably wouldn't notice, or at least wouldn't notice it very often. On high fan speed, the noise would be noticeable, but it's sufficiently quiet that it probably wouldn't bother most people. And certainly isn't loud enough to affect any normal activities in a living area. If you had it in a bedroom and had it on high fan speed, you might want to turn on a white noise machine while you sleep just so you can't hear the unit reversing directions.