Dehumidifier Recommendations??

**Daren-n-Leah** · 11-15-2023, 09:05 AM

Hello All,
We just got our 2500RL in July and still getting things in order. We would like to get a dehumidifier to go in the camper and looking for advice. We would like to get one that has the option of draining into the sink or shower. Can anyone recommend something? Thanks!!

**shantydreams** · 02-12-2024, 05:48 PM

we use a dryer made by davis instruments,model 1000 it works well for us and no need for drains. the last trailer we used one in was 28 ft we will use it in our 16bl as well hope that helps.

**jkwilson** · 02-12-2024, 09:16 PM

Originally Posted by shantydreams

we use a dryer made by davis instruments,model 1000 it works well for us and no need for drains. the last trailer we used one in was 28 ft we will use it in our 16bl as well hope that helps.

I think you misunderstand how those units work. It’s just a small heater. No other function. It does not in any way remove moisture from the air.

**huntindog** · 02-13-2024, 04:27 AM

Originally Posted by Daren-n-Leah

Hello All,
We just got our 2500RL in July and still getting things in order. We would like to get a dehumidifier to go in the camper and looking for advice. We would like to get one that has the option of draining into the sink or shower. Can anyone recommend something? Thanks!!

Get a bigger one than you think you need,RVs require more capability than a house. Look at 40 pint and larger units I forget what brand mine is, but it is my second one which was smaller and ineffective. I have had it a long time, so I doubt that model is availible anyway.

**shantydreams** · 02-13-2024, 07:32 AM

Originally Posted by jkwilson

I think you misunderstand how those units work. It’s just a small heater. No other function. It does not in any way remove moisture from the air.

I think they were talking about when the unit is stored? the davis has a fan built in. I used one on both my sailboats and in the campers it worked well for us at drying the air and taking care of moisture problems,and maybe worth trying I did not like the damp rid never did try a dehumidifier. just a thought.

**Butcher** · 02-13-2024, 09:15 AM

How does a dehumidifier remove water from the air and have no place to put the water it removed?

I do not know but looking at the Davis unit, it looks to be just a heater as mentioned above. How is hot humid air be more beneficial than cold humid air? The way I see it, if you are not draining/catching the water, you are not dehumidifying anything.

There are small space heaters that are a quarter of the price that probably do just as well.

**Second Chance** · 02-13-2024, 09:24 AM

Originally Posted by huntindog

Get a bigger one than you think you need,RVs require more capability than a house. Look at 40 pint and larger units I forget what brand mine is, but it is my second one which was smaller and ineffective. I have had it a long time, so I doubt that model is availible anyway.

I'll second this advice. We have a GE 20-pint with a large collection bucket. On really wet days (think east coast on humid, cool days when the ACs aren't running (the ACs are really great dehumidifiers), I'll have to empty the large bucket after 8 - 10 hours of operation. It also has an output for a tube do drain outside. If you drain into the tanks with the unit unattended, over time you run the risk of overfilling the tanks.

Rob

**Second Chance** · 02-13-2024, 09:32 AM

Originally Posted by jkwilson

I think you misunderstand how those units work. It’s just a small heater. No other function. It does not in any way remove moisture from the air.

Originally Posted by shantydreams

I think they were talking about when the unit is stored? the davis has a fan built in. I used one on both my sailboats and in the campers it worked well for us at drying the air and taking care of moisture problems,and maybe worth trying I did not like the damp rid never did try a dehumidifier. just a thought.

Originally Posted by Butcher

How does a dehumidifier remove water from the air and have no place to put the water it removed?

I do not know but looking at the Davis unit, it looks to be just a heater as mentioned above. How is hot humid air be more beneficial than cold humid air? The way I see it, if you are not draining/catching the water, you are not dehumidifying anything.

There are small space heaters that are a quarter of the price that probably do just as well.

The Davis so-called "dryer" does not remove moisture from the air. Heating the air only serves to increase the amount of moisture the air can hold without the moisture condensing. When we say "humidity," we're really talking about relative humidity. The amount of moisture the air can hold is relative to the temperature of the air. Warm air can hold a lot more moisture than cold air. A device that merely heats the air only increases the amount of water that can remain suspended in the air without condensing. As that air cools, the moisture will condense (in weather world, this is rain; in a boat or RV the water condenses when the air contacts a cold inside surface). A true dehumidifier works by chilling the air with a refrigeration unit and collecting the condensation on the chiller fins from where it drips/drains into the collection reservoir.

Rob

**Butcher** · 02-13-2024, 09:34 AM

So, they should call it a humidifier since it can increase the amount of water in the air.

**Second Chance** · 02-13-2024, 09:38 AM

Originally Posted by Butcher

So, they should call it a humidifier since it can increase the amount of water in the air.

Only if it had a pan of water that it blows the warmed air over to add humidity... like the pot of water on the wood stove or the pie pan of water on the radiator in "the old days."

Rob