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01-20-2022, 04:01 PM
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#1
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Junior Member
Join Date: Oct 2020
Location: Baxley
Posts: 10
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condensation on windows
Hello all I have a 2020 Cougar 26RBS and in my first sub freezing trip I noticed water puddled on the bottom of the window sill over the bed and the sun shade was frozen to the inside of the windshield. Any suggestions on how to stop the condensation from building up?
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01-20-2022, 04:06 PM
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#2
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Quote:
Originally Posted by parttime1
Hello all I have a 2020 Cougar 26RBS and in my first sub freezing trip I noticed water puddled on the bottom of the window sill over the bed and the sun shade was frozen to the inside of the windshield. Any suggestions on how to stop the condensation from building up?
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Crack a window &/or roof vent.
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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01-20-2022, 04:12 PM
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#3
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Senior Member
Join Date: Apr 2019
Location: Henniker
Posts: 2,155
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Unless you stop breathing and also don’t use the stove/oven, you will have humidity inside and it will condense on the coolest/least insulated surfaces (like windows). Ventilation, dry heat, and maybe a dehumidifier are all part of the solution. I am sure some of the full-timers will chime-in with other ideas.
__________________
Rob & Amy
2019 Passport 240BH SL (current)
2024 Cougar 29BHL (on order, originally due late April, then pushed to early May, now pushed to early June)
2022 Ford F250 7.3L Godzilla Crew Cab FX4
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01-20-2022, 05:26 PM
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#4
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Senior Member
Join Date: Apr 2012
Location: Portland, OR
Posts: 4,222
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Quote:
Originally Posted by NH_Bulldog
Unless you stop breathing and also don’t use the stove/oven, you will have humidity inside and it will condense on the coolest/least insulated surfaces (like windows). Ventilation, dry heat, and maybe a dehumidifier are all part of the solution. I am sure some of the full-timers will chime-in with other ideas.
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Nail on the head!
Bedroom windows are the worst as you expel a lot warm moist air when sleeping. Were you at a campsite or boondocking?
We full time and now have two dehumidifiers large (30 pint) in living area and small desktop unit in bedroom.
Always run bathroom fan when showering and for about 15 to 20 minutes after. Our range hood exhaust outside and run when cooking. We have single lane windows, and use the inside shrink storm windows.
Dry heat is either electric or gas furnace, gas space heaters (catalytic) will add moisture to the air, they require ventilation to be safe.
We don’t like drafts, so no open windows or vents, except as mentioned before.
__________________
Russ & Paula and Belle the Beagle.
2016 Ram Laramie 3500 DRW 14,000# GVWR (New TV)
2005 Copper Canyon 293 FWSLS 32’ GVWR 12,360
Visit and enjoy Oregon State Parks
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01-20-2022, 08:22 PM
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#5
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Senior Member
Join Date: Dec 2017
Location: Wandering the Country
Posts: 596
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Quote:
Originally Posted by parttime1
Hello all I have a 2020 Cougar 26RBS and in my first sub freezing trip I noticed water puddled on the bottom of the window sill over the bed and the sun shade was frozen to the inside of the windshield. Any suggestions on how to stop the condensation from building up?
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We have the 26RBSWE, so we don't have that window over the bed. But the condensation problem throughout the TT is the same. We found that putting the silver bubble wrap between the window and the window shade helps eliminate it. Originally we only put them in the windows during camping trips in the high heat. But it helps keep out the cold and reduces the condensation too.
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01-21-2022, 06:18 AM
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#6
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Junior Member
Join Date: Jan 2022
Location: Springfield
Posts: 14
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We run a dehumidifier in the front and 1 in the back.
Here's a business idea: Make a food grade dehumidifier that cycles clean water back into your fresh tank. Haha!
__________________
2017 Keystone Sprinter
2011 F-350 6.7 PS
2003 Pace Arrow
1978 Georgie Boy (Dodge Chassis) currently being remodeled
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01-21-2022, 06:44 AM
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#7
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,995
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If you're seeing condensation on the windows, it simply means there's "too much humidity" inside the trailer. What you don't see is the condensation in other areas that can damage or even destroy your RV.
Places like where the mattress touches the exterior wall, behind the sofa, inside the dinette storage areas (along the exterior wall) are all "cooler than the air inside the trailer" and the moisture in the air will condense in those places, make things "wet" and set up a perfect mold growth environment.
Also check under the mattress if you have a passthrough storage area under the bed. The passthrough is much cooler than the trailer interior and there's little/no insulation in the roof of the passthrough section, so under the mattress stays cold and that sets up condensation under the mattress and inside the bed storage area.
If the windows are wet, you really need to be pro-active to keep the above areas dry or you'll discover some significant mold issues in the spring.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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02-05-2022, 05:49 PM
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#8
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Member
Join Date: Jan 2022
Location: Brownsville
Posts: 86
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Burrito you're right
Kinda hard to keep windows open when it's in the 30s. Like burrito says get a good dehumidifier or two. No brainer for anyone whose been around wet places.
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02-06-2022, 06:31 AM
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#9
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Senior Member
Join Date: Apr 2012
Location: Portland, OR
Posts: 4,222
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Quote:
Originally Posted by travelin texans
Crack a window &/or roof vent.
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Quote:
Originally Posted by Ram Nation
Kinda hard to keep windows open when it's in the 30s. Like burrito says get a good dehumidifier or two. No brainer for anyone whose been around wet places.
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Totally agree, this may work if camping in the rain and temp is in the 50's or so, but when cold out one needs to control moisture from the inside.
__________________
Russ & Paula and Belle the Beagle.
2016 Ram Laramie 3500 DRW 14,000# GVWR (New TV)
2005 Copper Canyon 293 FWSLS 32’ GVWR 12,360
Visit and enjoy Oregon State Parks
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02-06-2022, 07:05 AM
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#10
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Senior Member
Join Date: Jan 2020
Location: Roseville
Posts: 292
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What do people have for a dehumidifier? I have been looking for a couple smaller ones that are easy to travel with and store when not needed. We are taking our 1st retirement trip in March and April. Starting next winter, we plan to get out on Minnesota for about 4 months.
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Jim and Carole
Roseville, MN
2018 RAM 3500 DRW, Diesel, Long Box, Air Lift Bags - 2023 Fuzion 421
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02-06-2022, 07:12 AM
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#11
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Senior Member
Join Date: Aug 2020
Location: Upper Chesapeake Bay
Posts: 4,833
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This is what I have…nice unit and compact
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2020 Cougar 315 RLS
2020 Ram 3500 6.7HO 4.10 Dually Aisin
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02-06-2022, 07:30 AM
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#12
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Member
Join Date: Jan 2022
Location: Brownsville
Posts: 86
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Quote:
Originally Posted by jasin1
This is what I have…nice unit and compact
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+1 on the Haier. We bought two when moving into our Alpine. Normally just the one in the living room area will suffice but when the wife does laundry with our Splendide washer she turns it on in the bedroom. She air drys the clothes and it helps with the moisture immensely. Plus humidity down here in southern Texas is always high. It's a must for sure too have dehumidifiers. The open window thing won't cut it.
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2020 Alpine 3401RS
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02-06-2022, 07:39 AM
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#13
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,685
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Quote:
Originally Posted by JDDilly
What do people have for a dehumidifier? I have been looking for a couple smaller ones that are easy to travel with and store when not needed. We are taking our 1st retirement trip in March and April. Starting next winter, we plan to get out on Minnesota for about 4 months.
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IMO whatever you do DO NOT get any dehumidifier that uses dessicant. It was not meant for dehumidifying a space as large as an RV and does not pull an appreciable amount of moisture out of the air - btdt.
The dehumidifiers that do an excellent job a removing moisture use a compressor. They come in various sizes. I've had a 35 pint but it was a bit too large and now carry an 11 pint (memory) that does the job but I wouldn't go smaller - I empty it twice a day here in FL. Jasin linked a 20 pint which would probably be ideal if you can find one.
We come from an arid climate and are used to very low humidity. Neither of us like it but we like to stay in humid areas which mandates the dehumidiers. Prior to using them we had issues with condensation on the windows, walls etc. as well as having a hard time sleeping feeling like we were "stuck" to the blankets from the moisture. Tried a couple of the dessicant "dehumidifiers" because of their size and low cost - might as well have put a roll of toilet paper on the counter to absorb humidity. Once we put in a compressor dehumidifier all that changed; no more condensation any where in the RV and being inside is as comfortable as sitting in our home in W TX, we won't go anywhere without it. Jason linked a Haier on Amazon, Lowe's sells them (we bought the 35 pint HiSense there (in the barn now) and we carry the smaller Ivation (11 pint) I bought on Amazon IIRC. In the humid places we like to go opening windows just makes things more uncomfortable.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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