Evap Cooler Installation: Thoroughly Confused!

I've now had 3 professional A/C contractors come out to give estimates on installing evap cooler. (I'm in Yuma, AZ. so you'd think these coolers would be popular here!) I'm in a 20'x56' manufactured home (mfg. in 2001 with roof knock out and prewired for evap). First 2 contractors concluded my only option is to roof mount a downdraft (4400 CFM) -- NEITHER familiar with, or willing to install Up-Dux ceiling vents. 3rd contractor - suggested 'up draft' - (5800-6800 CFM) mounted on ground in rear of mobile, and installing dedicated ductwork for evap -- cutting floor & installing 3 floor vents (8"x10" or 10"x10"). The more I read and think I'm not sure they're really meaning "updraft" (side draft, modified??) My existing ductwork (for heat & a/c) is in the floor - I'm not real thrilled about having more holes/vents in the floor. (I'm already really limited as to where I can put furniture). Also not sure 3 vents would be adequate (one in living room, 1 in master bedroom, and 1 in one of the other 2 bedrooms). I've sent an inquiry to Up-Dux asking for name(s) of wholesalers/installers in this area, and whether any of their products are appropriate for mfg. home installation - no response. At this point, I tend to agree that ground installation of evap would be better (would sure make maintenance a lot easier!) The dedicated ductwork sounds logical as well - I'm just not sure size & # of floor vents is adequate. And really wondering if Up-Dux would offer superior performance. Should I call other contractors? Go with #3 - or does their proposal need some changes?

 

Hi, can you put a window cooler through wall. i have a mobile home and i put it through the wall .easy maintenance. built a stand under it. the air goes through the hall and got three wndows open sixin with locks.works good. there are two evap cooler makers az, talk to them maybe they can help.

 

With a 1200sf home, you should be OK with a 4800CFM to 5000CFM model. I'm from Phoenix, so I understand how hot it gets in Yuma, don't go with something smaller.

You have an attic? Up-Dux are great! But are meant to be intalled in the ceiling and the vent opens into the attic. HD is where I bought mine.

You're correct to be concerned about using the existing heating duct. It's probably too small and would restrict air flow and actually put back pressure on your swamp cooler, especially a 2-speed on high.

If your manufactured home came with a knock out and wired for evap on the roof, it doesn't make sense to me that there's no duct work up there also? And if there's an attic or crawlspace up there for the Up-Dux, is there enough room to install duct work too?