(08-03-2018, 09:26 PM)Cammalu Wrote: I dunno much about swamp coolers but I lived in NM and had one. It sure didn’t work well when there was a little humidity outside.
I would think we would all have then here in the east if they worked in this climate.
That would have been a direct type one, that is actually designed to add moisture to the air rather than to remove it. This can be beneficial in dry areas, but they don't work as well in humid areas.
A good swamp cooler of either type needs outside air coming into it for it to perform it's best. The direct type also requires ventilation on the opposite end of the house for it to work it's best, and not add appreciable moisture to the interior. While the direct type doesn't work as well in humid area's, with proper ventilation and outside air fed into the unit, they will still deliver a noticeable improvement over just a fan and ventilation.
When in hot and humid Florida, a friend had a portable, direct type, swamp cooler, in a closed up apartment, sitting on his coffee table, and complaining it didn't work. His apartment was like walking into a sauna. I moved it into an open window, opened his front door, and his other bedroom window, and within a short time it felt like a dry air conditioned apartment. He couldn't believe the difference that simple modification in usage made.
Swamp coolers always work, some better than others in different areas, but the biggest problem with swamp coolers is usually user error, and in the case of RV's, their water usage. But when power is in short supply, and water is available, swamp coolers can't be beat.