Does Advent Air Rooftop RV Air Conditioner Remove Humidity

Updated 06/30/2024 | Published 09/09/2018

Question:

Hi, Im considering this A/C unit because our Dometic Brisk causes the humidity to rise in our trailer. I think this is possibly due to short cycling or bad design - I dont see a way for the evaporator to rid itself of moisture, theres not drip tray under it so when the condenser kicks off and the blower is still circulating inside air it is just adding the moisture in the evap back into the air. Thanks,

asked by: Ben

Expert Reply:

When an air conditioner is running properly it does remove humidity. So the Advent Air Rooftop RV Air Conditioner # ACM135C would remove humidity. There is a drain system in this kit as well.

expert reply by: Jameson C

Larry F.

2/25/2020

We just had an Atwood 15BTU rooftop installed in our 2014 Itasca Reyo and are having problems with high humidity 70-85 in any mode cooling, heating and dry. It will cool and heat ok, but we cant live with the high humidity. Is this typical for this unit. TIA.

Chris R.

2/26/2020

I reached out to my contact at Dometic Atwood and she said that the Air Command should definitely be working to reduce that high humidity you're dealing with. She said there are a number of factors that might lead to this issue, including the install process, but she recommend checking to make sure the cold air it's pumping out is at least 18 to 20 degrees cooler than the outside temp. If not, this indicats an internal issue that may require repair/replacement (under warranty). I recommend taking the RV back to where the AC was installed to have them check everything out again if possible.

Larry F.

2/26/2020

Thanks. I just tested the cold air with my IR thermometer and I saw 30° with and outside temperature at 51°F. During the cooling cycle, the humidity usually comes down to acceptable levels, like 49 from 60 this time after only 2 minute run-time. But after it shuts off and the sensing fan comes on, the humidity will climb much higher and will usually reach outside levels. It acts the same with heat pump. Any thoughts on why the humidity rises so much during the sensing phase? Thank you for your support.

Chris R.

2/27/2020

It definitely sounds like something is preventing the system from ridding moisture/humidity like it should. I honestly can't say for sure what this might be. I really think your best option is to take the camper back up to the shop to have them take a look so they can make sure everything is running like it should and there wasn't something overlooked during the install process.