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Topic: Window fan to cool down coach (Read 688 times) previous topic - next topic

Window fan to cool down coach

We are now using a 20" Walmart box fan to cool down the bedroom when the outside temps are below 72 degrees.  To position the fan in the window we made a simple PVC frame that allows the fan to be removed, reversed & relocated to a living room window ledge if desired.  Shrink tube covered bolts in four short PVC pieces hold the fan centered over a PVC bottom support that is held in place with a long threaded rod.

Our coach has drapes where we modified the rod to allow them to be pulled to the center.  We also installed double MCD shades behind the drapes and the fan is positioned away from MCD's. 

Often we run the fan on low speed most of the night and also the white noise helps.  Not only has it reduced roof air usage, fan is quieter, consistent, and we now bring in fresh air.

All PVC is ¾" except for the top rear ½" pipe that prevents fan from moving when driving (or stopping suddenly).  None of the PVC is glued together.

Re: Window fan to cool down coach

Reply #1 –
If you put the fan in a window away from the bedroom blowing out it will pull cool air in without the fan noise.  FWIW


Keith
Keith, Joyce & Smokey the Australian Cattle Dog
1995 U320 SE Extreme 40' WTBI Build # 4780, with a Honda CR-V hopefully still following behind.
Motorcade # 17030
FMCA # F422159

Re: Window fan to cool down coach

Reply #2 –
We have used fan in living room window (fan wants to blow off ledge) and Kool-o-Matic with only bedroom window open to 'suck' in air. But nothing comes near the air volume of blowing into a room with a window open on opposite wall. We think this simple idea is one of the best things we have done to improve our sleeping area. Right now the inside temp is 72 and outside temp is 61 and with fan doing its thing, the bedroom temp is coming down and in a couple of hours when we hit the sack everything will be more comfortable.  And we don't have to close up and run the roof air's.

Re: Window fan to cool down coach

Reply #3 –
Like the fan idea.  But in the photos we saw (Called wife to come look at this!) an addition to the window we do not have.  The slotted, jaolousy window thingy.  Where from?  andy1
Carolyn and Lewis (Andy1) Anderson
1996 U270 36'

Re: Window fan to cool down coach

Reply #4 –
Andy & Carolyn,

The window thingy is called Window Maxx and like some other good RV items are no longer manufactured.

Company was bought out and this one item dropped.
http://www.makariosrv.com/maxxair-window-maxx-louvered-window-vent-00-455000 /?utm_source=googlepepla&utm_medium=adwords&id=18283950120&gclid=CI6_0u-Iq8E CFeZAMgodGywAQQ

We have always had 4 Window Maxx's in our coaches. They let us lock windows in an open position, letting air come in, even if it is raining outside. Just the thing for a New Mexico hot day. Also works great if one has animals. It fits all radius windows that slide open, like many of our coaches.

What do you mean that you don't have this bedroom window?

Re: Window fan to cool down coach

Reply #5 –
This sounds like a good 3-D printer application ;D
Elliott & Mary Bray
ex. 1996 36' U295 - Build 4879
ex. 2018 Coachmen Leprechaun 319MB
 

Re: Window fan to cool down coach

Reply #6 –
I have them on my bornfree  and they work well.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Window fan to cool down coach

Reply #7 –
What am I missing? ::)

Bathroom fan, main house fan will turn over the air and drop temps in about 10minutes ^.^d

Is it the blow out desire?  My fantastic fan has a blow in switch.

I like the setup, maybe I'm alone here just seems like its redundant with current air movement systems.

 Unless you u320 guys dont have the same fans :))
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My advice and experiences are Free, you decide if they are worth anything .

John - driving Old Faithful
1994 U280 GV
C8.3, Banks, Pacbrake, 900 watts, Resonator, XLHD tow dolly
Retired Army Warrant Officer

Life is what you make of it - if it is lemons, make lemonade!
Former Coaches:
1988 GV 40' ORED 300HP CAT - 9 years
1990 Winnebago LeSharo - 3 years
2000 Newmar London Aire - 3 years (#18 of 23 produced)

Re: Window fan to cool down coach

Reply #8 –
Quote from: fouroureye –
What am I missing? ::)
Bathroom fan, main house fan will turn over the air and drop temps in about 10minutes ^.^d

I suppose I have the same question. We've been quite pleased with the air movement created by the Fantastic Vent fans in our bath and kitchen. What's the real advantage in having all of the extra hardware?
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: Window fan to cool down coach

Reply #9 –
Add in the fact that hot air rises and the use of the ceiling fans makes even more sense.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: Window fan to cool down coach

Reply #10 –
I don't think it is about changing the air out of the coach with outside air as much as it is reducing the temperature of the coach itself. Exhausting air out of a window near the front of the coach and letting in cooler, outside air from the bedroom windows (or the other way around) will cause the cooler air to move through the coach cooling the structure down and pushing the heat out.

Our old two story non-airconditioned home in St Paul had a very large exhaust fan in the upsatirs ceiling.  Opening just a few windows on the first floor and closing some doors caused the cooler night air to pass through most of the house and then out.  This fan sucked several times the volume of air in the house every hour.  After running the fan overnight and then closing windows the house would stay cool for several days.

Our ceiling fan in the BR makes sleeping on a warm evening easy.  We have a small fan up front. Any air movement makes a big difference.

Roger
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN