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davidz71 · 06-22-2008, 04:18 PM

My two Fantastic Vent fans run during the day while the trailer is parked in the back yard. Pollen and small bugs seem to work right through the screen window in the bathroom which I keep open so I went to Lowe's for an A/C filter, cut it to size and slipped it into the window. Do you foresee any problems with this arrangement? The fans do not seem to change speeds or labor even when I open another window.

TBRich · 06-22-2008, 04:24 PM

That's an interesting idea... I don't see any problems in using that set up. I've thought about putting some sort of filter in the back ceiling vent (which is not a Fantastic Fan) so that the air drawn in by the front Fantastic Fan wouldn't bring dust in. Hmmm. Thanks for the food for thought.

**moosetags** · 06-22-2008, 04:25 PM

Neat idea!

2airishuman · 06-22-2008, 04:44 PM

Quote:

Originally Posted by davidz71

... Do you foresee any problems with this arrangement?...

hard to know, you are the canary on this one....

but there are commercially available, open cell foam, filters/screens for the roof vents...

they allow a LOT more air flow than that filter, but are mounted RIGHT at the fans...

and f.f. cautions NOT to use them with their fans...

i think it voids the warranty, IF they know about it....

so using something at the window would have some of the same issues...

and a high filter element like that even more so...

otoh air will be drawn through the many shell LEAKS freely flowing...

like the fridge holes or floor holes inside the cabinets...

so i'm not sure that will really keep out the dirt OR impede air flow much...

let us know HOW DIRTY it is in 2-3 days....

because i HAVE used the foam filters at the fans....

and they get LOADED very quickly....

cheers
2air'

TBRich · 06-22-2008, 04:55 PM

Our Fantastic Fan only blows outward (as an exhaust fan) so it's the air coming in that needs filtering for us...and that's usually/mostly through the rear vent opening. It's usually not a huge problem, but we were in a particularly dusty park not too long ago and were amazed at the amount of dust brought it...so some sort of filter on the back vent might be useful.

john hd · 06-22-2008, 04:56 PM

craig

looks good, i have to think if that filter is designed for a house and ment to be changed monthly you will do fine.

let us know how it works!

john

2airishuman · 06-22-2008, 05:26 PM

Quote:

Originally Posted by TBRich

Our Fantastic Fan only blows outward (as an exhaust fan) so it's the air coming in that needs filtering for us...

my unit has one fan that is bidirectional and one that is 'out' only...

but even with only one 'out' fan a filter can be placed over the other vent...

that will trap incoming stuff that gets through the screen, but before it circulates IN the trailer...

caveats as noted in last post, and it FILLS with dirt quickly (1-3 days)

the simplest approach to venting heat and limiting dirt while not USING the unit is to...

open both vents a small amount (1/2 inch) but without turning ON either fan and with filters in place....

this lets the hot air rise and provides some small passive circulation while screening the crud...

i do like the idea of using the 3m filtrete like elements cut to size...

cheers
2air'

TBRich · 06-22-2008, 06:55 PM

Quote:

Originally Posted by 2airishuman

my unit has one fan that is bidirectional and one that is 'out' only...

but even with only one 'out' fan a filter can be placed over the other vent...

that will trap incoming stuff that gets through the screen, but before it circulates IN the trailer... >snip<

2air'

True...however, if in-coming air vent is just a vent (and not a Fantastic Fan) the round filter doesn't fit...it's a rectangular opening covered with a screen ...I'm going to try to find some of that open cell foam, stuff like that used in the AC vents and see if I can fashion a filter to fit that hole...

davidz71 · 07-15-2008, 06:12 PM

It has been 3 weeks since I put the filter in the window and it has cut out most dust coming into the bathroom and many more bugs. I found that some of the small bugs were coming in through the fuzzy stuff around the window arms so I replaced it in that window after ordering some from Inland RV. It seems to be doing the trick. Picture on left is new on 6/22/08 and shot on right is at 7 p.m. 7/15/08. It is starting to turn a little gray with a small bug here and there in addition to a little yellow pollen.

Pick · 07-15-2008, 06:49 PM

Looks like a super idea. I am going to do that on mine. I do notice a lot of dirt around the kitchen window, which is the one I open while running the Fantastic Wonderfully Amazing Stupendous fan in the front of the coach.

davidz71 · 08-24-2008, 04:25 PM

It has been about 9 weeks now since I put the Filtrete 1000 filter in my bathroom window. I have not changed it earlier since I can easily see light through the filter when inside the trailer. I still haven't noticed any change in fan speed if I crack or open another window and feel air coming through the filtered window when I stand in front of it. To be on the safe side, I changed out the filter to a slightly cheaper model Filtrete 600. You can see from the Filtrete 1000 vs. the new 600 how gray the 1000 is. What you may not see are the small bugs, one fly and other specks of dirt and pollen. I will do this from now on during the spring and summer months.