VENTILATION IN A PVC

[69473]

Thinking of ways to better ventilate our PVC, it has poptop a and no available roof space to fix a traditional roof vent.
Has seen on YouTube a video of a converter fitting some thing similar to this

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Wondering if anyone has experience of fitting to a van.
Have them at home for a number of years and find them excellent, most importantly almost silent and totally reliable.
Expelled warm air flows over heat exhanger and then reverses operation and draws cool fresh air back in through the heat exchanger warming it before entering the van.
Fan runs at a very low speed unlike traditional extractor fans, its basically a motorised trickle vent.
As an added bonus it also has a internal air filter and remote control operation.
If need be i think installation may be possible without the heat exchanger.

 

[phase3begins]

Don’t know if these would do. We use them on a Ducato but they do them for other vehicles.
no holes required

Ventilation grille for the cab for Fiat Ducato and similar -

Sleep well at night, leave without worries in the summer, air for the pets: this is ensured by the fresh air grilles in the cab. Effective…

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[SpeedyDux]

Easy. Open the rear barn doors and the sliding door. 100% air change in less than 20 seconds. Repeat when it gets too stuffy inside.

 

[69473]

Thinking more at night time, four of us in the van plus dog.
Even with rear windows on trickle and other vents open we struggle for fresh air.
Our heating system does have a vent setting but not sure if his actually does anything, it certainly doesn't seem to pull fresh air fitted in.
Also in winter it would be good to exchange air without loosing heat .

 

[Vanman]

We find a load of air comes in via the footwells if you leave the cab heating control on Open (rather than re-cycle). I suppose you could turn the cab blower on for a few mins if desperate.

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[69473]

Sorry, the vent facility I mentioned is on the truma diesel air heating system control panel.
I guess what I'm looking for is regulated fresh air at night.
Especially when the weather is poor, either when cold or heavy rain.
In the summer it's no problem with windows open.

 

[L' Hobo]

In my Murvi, I can crack open the extractor fan in the roof over the kitchen and then put it on the slow setting to either suck in or extract BUT on the first VW van conversion I did, I installed a couple of the S/S Mushroom type ventilators that they use on houseboats. In really bad weather, these can be pulled down and sealed shut. These can be bought from most good Chandlers but requires cutting a hole in the roof?

PS I have seen advertised, small extractor fans that one traps in the front windows of the van and held in place by raising the window.

 

[69473]

I understand, however these blauberg units operate differently to a normal extra fan.
We originally fitted them to our property to help air quality on a house that was over insulated and suffered from poor air quality.
Instead of the upheaval of fitting a mechanical heat/air recovery system and the necessary ducting that would be needed these units were recommended.
We now have a more powerful version of the type in the original post installed in all bedrooms and kitchen/lounge.
It wasn't until I saw a American converter use them that made me wonder if anyone else had used something similar.

 

[Lenny HB]

I wouldn't have thought they are much use in a motorhome as only 230v, although you could use an inverter to power it but not ideal.

 

[Tigger-Tim]

I have seen setups where people have fitted a truma fan blower to pull air from underneath the van into the living area. It can be made to look factory fitted with a couple of grilles and trunking.

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