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Old 08-09-2016, 10:51 AM   #1
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Outside campfire smoke comes into air conditioner

Today is my day for posting. We went camping 3 weeks back and of course people love their fires. I have asthma and so I went inside and through the whole evening, our air conditioner kept pumping smoke into our trailer from those bonfires outside. I did a little research and someone said to slide the fresh air intake closed. We checked the roof top, but could not find the fresh air intake.

Also after checking another JetStream site someone mentioned that the seal around the air conditioner make not be sealed well.

Any ideas? We are going camping this next two weeks at our state fair and I know there will be fires. I also called Dometic (air conditioner manufacture) and they said that it needed to be serviced. We can do things ourselves and my husband is good with wiring, so any ideas would be greatly appreciated.

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Old 08-09-2016, 04:54 PM   #2
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I have some experience with industrial and home A/C units and have found that RV A/C units are a different story. RV A/C units have an inside grill, mounted on the ceiling, and some of these are referred to as "ducted" and "non ducted". The difference is IF you have A/C registers, or outlets, in the ceiling of different rooms in your RV then you have a ducted unit. IF you have a ducted unit look at the grill on the ceiling where the cooled air comes out and you will find a little tab that allows you to slide a piece so that cooled air comes out this register or you can close it to make the cool air come out the registers in the other rooms. This may be what someone referred to as "the fresh air intake". It's not really a fresh air intake as your RV A/C pulls air from inside the RV to cool through the intake grill which is the one with the filter. From what I know I do not see any way that smoke could be getting into your RV's A/C unit unless you do not have the seal between the A/C unit and the top of the RV. IF that seal is not there you will have a bigger problem when it rains as this seal prevents water from entering your RV. Yes, I will agree that you should have someone such as an RV tech look at your problem.

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Old 08-09-2016, 05:04 PM   #3
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I have a feeling that all RV a/c units must draw in some outside air, however there is no way to adjust this. Maybe you could email the manufacturer directly, I'm sure they would respond.
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Old 08-09-2016, 05:23 PM   #4
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Some RV AC units have an Fresh Air setting on the control knob on the ceiling unit, however these are usually non ducted models.

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Old 08-09-2016, 05:34 PM   #5
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Have you tried a portable air purifier ? That may help
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Old 08-09-2016, 06:21 PM   #6
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Thank you so much for your great input. My husband checked for that switch, he did not find any. We are running into other issues with our Toy Hauler. The Awning is not pulling out anymore, so my husband is checking the wiring and the motor. We also had a major water leak from our dehumidifier hose leaked on the floor and under the stove to the water vapor barrier under the slide! I'm sick about it right now. Hopefully insurance will take care of it. If you have any input on the awning, let me know. You're input has been greatly appreciated. Maria
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Old 08-10-2016, 12:46 PM   #7
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An AC unit does not draw air in from the outside. If you're getting smoke from campfires (which by the way are not bonfires) inside your RV, then you have either a window or door open, or some major cracks/gaps that need to be insulated.
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Old 08-10-2016, 01:02 PM   #8
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More people are bothered by allergies than ever before. Too bad other campers cannot be more considerate with their campfires!
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Old 08-10-2016, 01:05 PM   #9
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Outside campfire smoke comes into air conditioner

Howie is right the outside is sealed from the inside.

No air can get in from the outside.

Look elsewhere for a leak.

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Old 08-10-2016, 01:36 PM   #10
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R/V air conditioners simply take the air that is inside your rig and recirculates it through the air conditioner to create cooler air. The inside part of the air conditioner does not draw any air from the outside part of the air conditioner on the roof.

Unless your A/C unit is somehow defective or missing some of the major seals that were installed during manufacturing, it simply could not suck smoke in through the A/C unit itself.

It could however pull smoke in through an open roof vent, an open window, an open outside storage door, a defective slide seal or any other opening to the outside of the rig.

I'm sorry you are having issues with smoke inside your rig.
Some folks with campfires have no regard for those camped next to them.

Keep in mind, (and especially to those with sensitive noses) even just a small amount of smoke that could enter the rig when someone goes in or out the rig can linger for days or longer. Just ask my wife!

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