Oh brother have I ever got E mails and PMs from folks over getting more cooling outta their RVs air conditioning when I mentioned I'm in the A/C biz.
I've been using the voltage booster I've mentioned, it helps (though one overloaded and caught fire), but we NEED even more cooling so:
Don't know if you know the difference between air conditioning and swamp coolers.
But A/C uses freon and a compressor, and the swamp cooler uses the evaporation of water to cool and draws a lot less power to operate.
When Wet bulb and dry bulb temps approach each other swamp coolers don't work so great.
But in most Southwest USA desert areas, they work OK most the time.
Also, several RV swamp coolers have been on the market since the 1960's.
Most of them worked really crummy or not at all.
Poor design. Gave a very bad reputation to RV swamp coolers.
But an old guy that lived in Las Vegas, had a brainstrom and built an RV swamp cooler that worked very well.
It wasn't the drip down the shaved wood excellsior pad set-up, but a unique misting into a element system that was spectacular.
Damn it work'd and cooled great.
He passed away,, his company folded and that was that.
All the other RV swamp coolers on the marker were Rube Goldberg junk. They just don't work. I've checked them all out and they were disappointing.
We were in Page, Arizona at Lake Powell last month.
I saw an old jasper with a camper with inviting graphics and a demo RV swamp cooler on the roof that he was peddeling.
I check'd it out and it was cooling fantastic. I mean supurb. I opened the back door of his camper in the 113 deg. F heat and was hit by a blast of cool air.
He & his wife had eventually bought the rights and molds to the old, good working method swamp cooler after the original inventor passed away, and it's finally back in production.
Brother did it ever cool, and it worked quietly, and off the vehicles battery or optional solar panel.
Why we need it:
We camp all the time in the Southwest USA..
Most campgrounds are only 30 AMPs electrical service to most campsites so that limits us to only run one air conditioner in usually 105 to 112 deg F summer heat.
The RV parks voltage drops to brown out conditions, thus the A/C in everyones RV's barely cools.
(Park rules prohibit running the generator, and running the generator burns about 12 to 17 gals of fuel a day).
It's not enough. Our RV heats up too hot, and so do our neighbors & friends.
So, we're going to install this unique swamp cooler to supplement the RV's A/C. It hardly draws any power, and with it's 12V DC system, doesn't effect the main park power.
It draws just a few amps off the 12v DC batteries and may perhaps be a welcome improvement.
If ya dry camp it's really excellent.
So I'll snap some pix, and give a RTA report of the results.
They ain't cheap, but their application is unique to our problem.
What the heck, I'll give anything that looks promising a shot.