Trail Talk
Well-known member
Really appreciate hearing from someone having experience with Lunos in an RV application. Your covers are slick! Could the Lunos cover rotated to a similar cant back?
Heat Recovery Ventilators
- Thread starter Trail Talk
- Start date
Victorian
Approved Vendor : Total Composites
The outside vent cover/baseplate has to line up with the internal (insulated) ducting. I believe the direction/angle of down facing exhaust can not be changed.
Is that the Lunos E2 or EGo?
Trail Talk
Well-known member
As Blackdogvan noted, would there be anything in the way of rotating the entire unit?
That’s why I asked whether he was using the E2 or EGo. I have the E2 in my house and there’s nothing stopping you rotating them however you want. It looks like that’s the EGo though which has two sides and I could see it being more important which way it’s oriented. Still not sure it would matter much though.
Blackdogvan
New member
I use the EGo version. No reason I can see why it can't be rotated +- 45 degrees.
SootyCamper
Active member
To echo the use case for the "suitcase" style units. I attended the allrad show in Germany last may and found this unit by Bayernluft. I too am looking for cold weather passive ventilation, so seeing a company on this side of the pond like Pioneer building basically the same unit is pretty neat.
As far as use case for RV use? Well, Bimobile is one of the largest players in Europe and wouldn't be placing these units in their campers if they fail. As pictured below they've attached it to the entry door on that specific camper. Utilizing this dead space on the door is great if you arn't planning on having a window in your entry door.
Heres a link, they offer simple manual units all the way up to humidity sensing wifi enabled units:
BayernLuft
As far as use case for RV use? Well, Bimobile is one of the largest players in Europe and wouldn't be placing these units in their campers if they fail. As pictured below they've attached it to the entry door on that specific camper. Utilizing this dead space on the door is great if you arn't planning on having a window in your entry door.
Heres a link, they offer simple manual units all the way up to humidity sensing wifi enabled units:
BayernLuft
Trail Talk
Well-known member
What is your experience with this unit during sustained sub-zero weather, any obvious condensation on the outside?I use the EGo version. No reason I can see why it can't be rotated +- 45 degrees.
Trail Talk
Well-known member
Excellent, bookmarked for a session with Google Translate. Also looked at Pioneer site but couldn’t find 12v offerings?
Trail Talk
Well-known member
A Google translated excerpt from the Bayernluft website re camper applications. Interesting points; "adds around 12 cm to the wall" (5 in) and "there is no minimum wall thickness".
Even in well-insulated vehicles, moisture must be ventilated to prevent condensation in cold environments. If ventilation is carried out without heat recovery, a lot of energy would have to be used to reheat the fresh air. This is where the small decentralized ventilation unit with a heat exchanger helps, which "recycles" the energy from the used air and thus preheats the fresh air in winter. In summer, the heat exchanger blocks the heat input caused by ventilation. However, please do not confuse the function with an air conditioning system, which can also remove the heat that has come in through solar radiation or heat transmission.
The main area of application is typical ventilation for moisture protection, i.e. to prevent condensation on cool parts of the outer shell in cold weather. Please note that this requires lower air exchange rates than for nominal ventilation. Of course, with every cubic meter of air exchange, CO2 is also ventilated, but there is only a dilution effect here and we do not want to give the impression that values of even close to 1000 ppm could be achieved in residential areas. If you do not have ventilation, our device is a huge benefit, but if fresh air is the main priority, then you should think about a larger device. Our device will not be offended if you open the window when necessary. This can also occasionally be necessary with very large vehicles or particularly high levels of moisture emission. In cold weather, our device has an enormous dehumidification capacity with a maximum power consumption of 6 watts and a comparatively low weight and space requirement.
The base body measures 30x40 cm and adds around 12 cm to the wall. Two rear pipes with a diameter of 50 mm lead through the cabin wall to the outside. There is no minimum wall thickness, but the device must be mounted in portrait format (no horizontal mounting and no landscape mounting). If condensation occurs in winter, this is also transported away via the shortest route through the lower pipe to the outer pipe cover with drip lip.
Thanks to operation with 12 volt direct current, a power supply is usually not required, as it can be connected directly to the 12V on-board voltage. Voltage fluctuations between 11 and 15 volts are tolerated. For 24V systems, a conventional voltage converter to 12V is used (e.g. Victron 24/12-5). The fan motors are padded with foam to protect against vibrations and have been doing their job in expedition vehicles around the world for many years.
In issue 50 (02/2019) there was already a detailed user report in the Allradler magazine
www.allradler.com
Our devices were also reported on in the specialist magazines Caravan and Wohnmobil in 2024
Even in well-insulated vehicles, moisture must be ventilated to prevent condensation in cold environments. If ventilation is carried out without heat recovery, a lot of energy would have to be used to reheat the fresh air. This is where the small decentralized ventilation unit with a heat exchanger helps, which "recycles" the energy from the used air and thus preheats the fresh air in winter. In summer, the heat exchanger blocks the heat input caused by ventilation. However, please do not confuse the function with an air conditioning system, which can also remove the heat that has come in through solar radiation or heat transmission.
The main area of application is typical ventilation for moisture protection, i.e. to prevent condensation on cool parts of the outer shell in cold weather. Please note that this requires lower air exchange rates than for nominal ventilation. Of course, with every cubic meter of air exchange, CO2 is also ventilated, but there is only a dilution effect here and we do not want to give the impression that values of even close to 1000 ppm could be achieved in residential areas. If you do not have ventilation, our device is a huge benefit, but if fresh air is the main priority, then you should think about a larger device. Our device will not be offended if you open the window when necessary. This can also occasionally be necessary with very large vehicles or particularly high levels of moisture emission. In cold weather, our device has an enormous dehumidification capacity with a maximum power consumption of 6 watts and a comparatively low weight and space requirement.
The base body measures 30x40 cm and adds around 12 cm to the wall. Two rear pipes with a diameter of 50 mm lead through the cabin wall to the outside. There is no minimum wall thickness, but the device must be mounted in portrait format (no horizontal mounting and no landscape mounting). If condensation occurs in winter, this is also transported away via the shortest route through the lower pipe to the outer pipe cover with drip lip.
Thanks to operation with 12 volt direct current, a power supply is usually not required, as it can be connected directly to the 12V on-board voltage. Voltage fluctuations between 11 and 15 volts are tolerated. For 24V systems, a conventional voltage converter to 12V is used (e.g. Victron 24/12-5). The fan motors are padded with foam to protect against vibrations and have been doing their job in expedition vehicles around the world for many years.
In issue 50 (02/2019) there was already a detailed user report in the Allradler magazine
www.allradler.com
Our devices were also reported on in the specialist magazines Caravan and Wohnmobil in 2024
Blackdogvan
New member
I've not seen them in action in brutal cold so I can't say for sure but I think it would depend a bit on how you installed the unit. If the exchanger matrix is really close to the wall opening then the warm moist exhaust air will freeze it for sure & this is a common issue with residential HRV systems. If extreme cold is your requirement I'd consider installing the matrix as far inboard as possible, even running the two flows separately through some ducting. Either way you should consider how the system will manage the frost when it melts again so you don't get drips. To be fair I've never given this issue a lot of thought but I will now.
Trail Talk
Well-known member
A good example from a recent trip (Ice Ice Baby 2025) shows the ice that built up outside our bathroom exhaust fan. The small computer-type fan runs continuously and makes the bathroom compartment an efficient "drying room". Ice usually forms during especially cold temps but hasn't yet interfered with the fan's operation.
