Dehumidifier recommendations

[Jewellbags]

I know it’s controversial but those that do plonk a dehumidifier in their moho to keep them dryer - can I get a recommendation or two of models please - preferably one that has the option of draining into the sink or shower tray .

 

[gpat]

I know you are probably bored with hearing it but motorhomes are not sealed and therefore having a dehumidifier running is an expensive waste of money.

 

[Jonno1103]

What gpat said. Motorhomes have permanently open vents for airflow. Best practice during extended periods of non use is to remove upholstery, mattresses etc & open the lockers to allow the air to flow naturally.

Using the van will always create moisture, your body alone will put a litre of water into the van atmosphere every 24 hours, more if you consume a lot of alcohol as it's a diuretic. Windows & roof lights in their vent position will alleviate most of this.

With an expensive powered dehumidifier there will never be a time when moist air ceases unlike using one in a laundry for example & summer weather can carry more moisture than autumn or winter, it's called humidity.

Save your money.

 

[Two on Tour]

Personally, I would not leave a dehumidifier running unattended.
Many classic car enthusiasts use a dehumidifier in their garages and although not a great many but quite a few have lost their cars and garages when the dehumidifier has failed and gone up in flames, for me, that's a risk I'm not prepared to take with either our classic cars or our motorhome.

 

[pwilmo]

Yes it is controvertial .. each to their own.

I have used happilly the

Meaco Air Dehumidifier DD8L Zambezi - Desiccant Energy Saving Dehumidifier​

It has won Which Best, it is a dessicant dehumidifier whereby a circular "sponge" is spinning and air forced through it, collecting on the disc and centrifugal force spins the water off into a collecting tray. The actual tray has only a 1ltr capacity but you can have a hose outlet.
Can also be used as a clothes dryer if you close off your shower room.
Most dehumidifiers work on a refrigerant system to remove moisture.
My motorhome sits on the drive, so every 2 days I empty out the water tray.
I shut all air vents and yes it does draw moist air in ..but it works ok for me.
Not meant to cause controversy, or raise a bun fight, but answering OP for a reccomendation

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[Toady]

Meaco are brilliant

 

[Stealaway]

If you've not sealed the van completely - unlikely. Then you will be trying to de-humidifie the whole street

 

[pwilmo]

The whole world more likely !!!, but I have a moisture sensor inside and it keeps the inside and furnishings dry throught winter/rainy days ...good enough.for me

Usually winter around 45, but not on this past good weather so today the van door has been open loading up for Shepton, so 54%humidity.

 

[Landy Andy]

People always say it’s not worth it but they still run their airconditioning, so they must be trying to cool the world.

I run a dehumidifier during the winter months.

 

[Mikeco]

I’m on the useless side as I remember using dehumidifiers on buildings and we had to seal every single crack to make sure that it dried out the plaster which was it’s main use.

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[Pausim]

I know it’s controversial but those that do plonk a dehumidifier in their moho to keep them dryer - can I get a recommendation or two of models please - preferably one that has the option of draining into the sink or shower tray .

Are you using a cover that blocks the ventilation or is there an underlying problem that is causing damp? Changes in temperature cause moisture to form so occasional heating can cause problems. Shutting the blinds might help when parked up unoccupied.

 

[Jewellbags]

The whole world more likely !!!, but I have a moisture sensor inside and it keeps the inside and furnishings dry throught winter/rainy days ...good enough.for me

Usually winter around 45, but not on this past good weather so today the van door has been open loading up for Shepton, so 54%humidity.



View attachment 804214

Are you using a cover that blocks the ventilation or is there an underlying problem that is causing damp? Changes in temperature cause moisture to form so occasional heating can cause problems. Shutting the blinds might help when parked up unoccupied.

Tbh I haven’t been pulling the blinds up on the sunny side but the van has always had questionable damp readings around the passenger side main window - that side is always parked in the sage near some bushes - albeit I have cut them back a foot or so from the van edge .

 

[rwg]

I use one in the worst part of winter, particularly if the van is unused for more than a week. You need to get a dessicant dehumidifier, not a compressor based one, since the compressor ones are only efficient when it is warm - they do very little when it is cold.

This is the one I have - https://ecoair.org/products/dd1-sim...y-dial-antibacterial-filter-carry-handle-blue - although it was a lot cheaper a couple of years back I set the trigger humidity relatively high so it doesn't run much. Yes, new moist air comes in through the vents, but overall it keeps the humidity down without running more than 2 or 3 short bursts a day. No problem with damp or condensation even in last winter's very cold weather.

cheers,

Robin

 

[Pausim]

Tbh I haven’t been pulling the blinds up on the sunny side but the van has always had questionable damp readings around the passenger side main window - that side is always parked in the sage near some bushes - albeit I have cut them back a foot or so from the van edge .

A damp area won’t be helping, you might need to look for the cause.

A warm sunny side and a cool shaded side could be making matters worse. Sun warms up the air inside the motorhome which means the air can hold more moisture, when the sun goes down the temperature drops and the air can no longer hold so much moisture. The moisture will condense first on the coldest surfaces which are likely to be the areas that didn’t get any warming from the sun. The same happens the next day and the sun dries some surfaces but not the shaded areas which remain cold and damp. As the air cools again the moisture forms on them and the damp builds up there.

The first thing I would try to do is establish whether the damp is coming in through the structure or is airborne moisture.

 

[pwilmo]

hey guys great advice on here, but the original post was for a recommendation for a dehumidifer.
He understood it would be controvertial, but I don't think advising him on ventilation etc. or questioning his reasons was his aim.
No offence intended.

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[Pausim]

I am not passing judgment on dehumidifiers, just trying to help with causes for the problem.

 

[rod_vw]

Personally, I would not leave a dehumidifier running unattended.
Many classic car enthusiasts use a dehumidifier in their garages and although not a great many but quite a few have lost their cars and garages when the dehumidifier has failed and gone up in flames, for me, that's a risk I'm not prepared to take with either our classic cars or our motorhome.

You have brought to mind a subject that I haven't really thought about before. I have a dehumidifier running part of each day in my garage (the part that the solar may be generating) and dumping its condensate out into a container. Which of course overflows if I don't use it but it does give me a clue how much damp it is collecting each day as it's visible from the kitchen window.
Despite comments about dehumidifying the street it does keep the dampness down in the garage although it is by no means sealed.
Those who know me will know what the classic car is.

 

[Jewellbags]

Thanks to all for some great suggestions

 

[Brains]

We are landlords, so have some experience with dehumidifiers
The model we are currently using is the Blyss WDH-316DD
We have a several in daily use for 3-4 years now

They work well and have the option of draining into a tank or a pipe and then into a sink
In a motorhome you would put them in the shower tray.

They stop working when the tank gets full (which in damp conditions can be 2-3 hours)

They do not have a timer, and nor can one be fitted.
So once they are switched off they can only be restarted manually.

They are not really suitable for continuous unmonitored operation, but a daily check or manual switch on (with a timer to switch off at night ?) may be an option.

(None have broken down or burst into flames so far!)