Do evaporative coolers (aka swamp coolers) really work? Do they work better in hot, humid areas?
Question:
Answers:
Swamp coolers are designed to be used only in areas where the air is relatively dry, because they add moisture to the air. But in suitable climates, swamp coolers can reduce cooling costs dramatically.
In addition to lower initial costs, swamp coolers operate on less than a quarter of the electricity required by a conventional air-conditioning system. And they run on only 120 volts as opposed to 240 volts, which can cut installation costs further by eliminating the necessity for additional wiring or a possible electrical service upgrade.
Swamp coolers operate by blowing air through wet pads. The air emerges as much as 20 degrees cooler after it passes through the unit. Because particles of air pollutants remain behind on the wet surface of the pads, swamp coolers provide some air filtration as well.
The air is blown into the house, slightly humidified. At least one window must be open when using a swamp cooler in order to allow the air to be blown inside to escape somewhere. There are some window-mounted swamp coolers available, but the usual installation is a whole-house system that can tie into existing or new ductwork. Water can be supplied manually to a holding tank or automatically via a hose or piped connection; consumption averages between about 2-15 gallons per day. Systems can use a thermostat for control purposes, and 2- or 3-stage or variable-speed fans provide precise management of the cool air input.
Maintenance consists of replacing the pads periodically and cleaning the unit. Pad longevity can be extended by ensuring the water sprayed on or dripped through the pads is of good quality. Hard-water minerals can build up on the pads and reduce their capacity for evaporation, thus diminishing the efficiency of the device.
If you live in a humid area do not get a swamp cooler ! They dont work well.
They work better in dry areas where water evaporates quickly, like deserts. If it's dry enough they work pretty good. An air conditioner is better, but more expensive.
We live in Mo. Quite a bit of humidity, at times. We use a swamp cooler in a warehouse situation. It does a great job. They are water cooled but they don't give out moist air. If that were the case we would deal with condensation, and we don't. I would highly recommend them. We were hesitant in the beginning also but couldn't be more satisfied.
More Related Questions & Answers...