Dehumidifier for the Oliver

[rideandfly]

On 10/14/2025 at 2:59 PM, jd1923 said:

I just looked. Amazon is "Currently Unavailable" and the AIRPLUS Store only shows large home units. Walmart search did not come up. If anybody finds it available online at some point, please post here! Are there other viable models, small with this compressor design?

Checked several times to purchase the Airplus unit for Ollie only to find them Unavailable.

Purchased a 21 pint KNKA unit on Amazon for $105, but looks like this unit went up to $144 on Amazon, Ebay has them for less.

Tried this unit for 3 days in Ollie with outside humidity ranging from 50% in the afternoon to 90% before sunrise with outside temps ranging from low 40s to afternoon upper 60s. This unit removed about a quart of water daily. I dumped the tank daily, but it also has a drain hose that could be run into the kitchen sink or shower drain. Set the unit at 40% and it actually kept the inside humidity at 47% when the compressor shut off to 55% when the compressor turned back on. It has CSA certification.

https://www.knkaonline.com/en-us/products/9927848493377

[Roger]

21 hours ago, rideandfly said:

Checked several times to purchase the Airplus unit for Ollie only to find them Unavailable.

Purchased a 21 pint KNKA unit on Amazon for $105, but looks like this unit went up to $144 on Amazon, Ebay has them for less.

Tried this unit for 3 days in Ollie with outside humidity ranging from 50% in the afternoon to 90% before sunrise with outside temps ranging from low 40s to afternoon upper 60s. This unit removed about a quart of water daily. I dumped the tank daily, but it also has a drain hose that could be run into the kitchen sink or shower drain. Set the unit at 40% and it actually kept the inside humidity at 47% when the compressor shut off to 55% when the compressor turned back on. It has CSA certification.

https://www.knkaonline.com/en-us/products/9927848493377

Amazon has it for $105 again. I'm going to hive it a try. 

[rideandfly]

19 minutes ago, Roger said:

Amazon has it for $105 again. I'm going to hive it a try. 

I’m sure you know this, but will say it anyway. When I received the unit it had been repackaged and shipped from Amazon on its side, this was previously mentioned in this thread,  set the unit upright for 24 hours before operation.  
 

I did not use rollers included with the unit, used 3M rubber pads that that also came with the unit. 

[Roger]

5 minutes ago, rideandfly said:

I’m sure you know this, but will say it anyway. When I received the unit it had been repackaged and shipped from Amazon on its side, this was previously mentioned in this thread,  set the unit upright for 24 hours before operation.  
 

I did not use rollers included with the unit, used 3M rubber pads that that also came with the unit. 

@rideandfly Amazon says this is frequently returned so we will see what kind of shape its in when it comes. I always assume stuff like this has to sit upright a day or so to let before running. Thanks for the headsup.

[Geronimo John]

On 6/10/2025 at 9:12 AM, topgun2 said:

One of the first things I always do when setting up my Ollie is to open the bath roof vent.  Then, depending on temps, humidity, precip, etc., I open other windows/Max Air fan (or not)

 

On 6/10/2025 at 10:01 AM, davekaro said:

..... I'd want enough air changes per hour to keep CO2 and VOCs at reasonable levels. ..... the scupper holes on the bottom (from what I saw during the factory tour) are not really bringing in enough fresh air to improve the air quality.

Dave:  I agree that only having the scuppers would not do much as there would be no "draw".  But as Bill stated, and I also nearly always do is to also open up the bath room vent. This and the air leaks from the Max Fan (When closed) do provide a draw for the scuppers below.  Now is that adequate enough?  I would respond  with a "Maybe, it depends".   LOL.

The maybe part depends on factors such as:

• How old is your trailer?  Has it off-gassed the offending VOC's to a great extent?
• What's being cooked or items brought into the trailer that could be adverse to the users?
• Wind direction and velocity.
• Construction or Fires in the region generating particulates.
• Other factors such as distance from an exhaust source, local pollution, etc.

It is helpful that our OTT's with their solid surfaces, are easy to clean and those surfaces don't generate much off gassing once cured. 

But as you stated some individuals need to be more or even extremely cautious and I certainly recognize this as a valid concern.  So your approach to the topic is spot on.  Experiment if you can and act according to you and your family needs.

For those where a HEPA filter would help, having a small HEPA filter such as the below Honeywell that we use during fire smoke events has been very helpful.  Another planned benefit is that if we must excape a fire/smoke situtation, the 20 to 50 watt power draw can be plugged into our Ford F-150 400 watt inverter to run the unit in the truck as we get out of the hazard zone.  This could be useful for other disaster situtations as well. 

PS: 

• Be sure to close the outside air vents on the truck A/C should you find yourself in the "Fire Country" scenario.)
• For travel we wrap our HEPA in a towell and it fits easily into the OTT OE2 Attic area.  

GJ

Edited November 13 by Geronimo John
typo

[Geronimo John]

On 6/19/2025 at 5:25 PM, Ollie-Haus said:

Like all refrigeration based appliances, if it’s turned on it’s side during shipping, it must be allowed to set in the upright position for 24 hours

Chris:  Yep for sure.  Gotta get the refrigerant oil down to the compressor where it will....... lubricate the compressor.  On it's side of upside down, the compressor oil mixed with the refergerant will not be doing it's job in the compressor.  Same thing is true for our desktop ice maker.

The Amazon spec's post the unit size as:

Can you confirm these meassurements? 

Can the unit be stored in the Attic for storage standing up?  If yes, would attic removal tilt to get it out of storage likely result in an oil entrapment issue?  Your thoughts?

thanks

GJ

[Ollie-Haus]

On 11/13/2025 at 7:10 PM, Geronimo John said:

Chris:  Yep for sure.  Gotta get the refrigerant oil down to the compressor where it will....... lubricate the compressor.  On it's side of upside down, the compressor oil mixed with the refergerant will not be doing it's job in the compressor.  Same thing is true for our desktop ice maker.

The Amazon spec's post the unit size as:

Can you confirm these meassurements? 

Can the unit be stored in the Attic for storage standing up?  If yes, would attic removal tilt to get it out of storage likely result in an oil entrapment issue?  Your thoughts?

thanks

GJ

Yes John those are the external dimensions. I don’t think you would be able to store the unit in the attic space without tilting it on its side. 
 

Ours stores very neatly and secure in the upright position under the forward dinette seat space, between the blade valve and the knee space fiberglass wall.