Evaporative Air Conditioners

What is evaporative cooling?

Nature’s most efficient means of cooling is through the evaporation of water. Evaporative cooling works on the principle of heat absorption by moisture evaporation. The evaporative cooler draws exterior air into special pads soaked with water, where the air is cooled by evaporation, then circulated.

What choices of evaporative cooling do I have?

The range of commercial and industrial evaporative coolers available today is extensive, varying from commercial mobile coolers to large and fully ducted systems designed for commercial use.

Are evaporative coolers more suitable for specific climates?

Evaporative cooling is especially well suited where the air is hot and humidity is low. However, in higher humidity areas there are many proven cost effective uses for evaporative cooling that make it the right choice. For example, bedrooms, living rooms, kitchens, laundries, greenhouses, spot cooling and many commercial properties such as shops where doors have to be left open.

What advantages does evaporative cooling have compared to refrigerated cooling systems?

Evaporative cooling will provide substantial energy savings over refrigerated air units. The simplicity of the design allows low maintenance requirements. The evaporative cooler will provide fresh, filtered air. The outside air that has been cooled will blow the stale inside air out. It is also the environment friendly choice.

How often do I clean my pads?

Pads should be cleaned at least once a season prior to storing for the winter. In hard water areas, cleaning may be required more frequently. Periodic, visual examination is required. Remove the back or top of the cooler following the instructions in the operating manual. Look at the pads. If they show signs of heavy mineral deposits they will need to be cleaned. Note: Be sure to unplug the unit before you access the inside.

How do I clean my pads?

Remove the back or top of the unit following the instructions in the operating manual. Note: Be sure to unplug the cooler before you access the inside of the unit. Remove the pad from the unit or back panel. Rinse the pad with fresh water using a hose or soaking the pad in a tub until the mineral deposits disappear. You may want to change the tub water occasionally to accelerate the cleaning process. Allow the pad to sun dry. Reattach the pad to the cooler back panel or reinstall inside the cooler. Replace the top or back panel on the cooler.

How often should the pads be replaced?

Pads should be changed when they no longer cool as effectively as they did when new. This generally happens when mineral deposits on the pads become so heavy that the water running over them during operation cannot be absorbed. If a pad is properly cleaned and maintained, its life can be three to five years or more.

Why is the cooler not cooling like I expect?

First check and make sure that the water tank is full. The water indicator located on the top or face of the unit should be in the full position. Evaporative cooling is humidity sensitivity ? the higher the humidity of the air being cooled the less the cooler will be able to lower the temperature. If the unit is not cooling properly check the humidity of the outside air being drawn into the unit. If it is over 55%, the unit is producing the lowest temperature that an evaporative cooler of its size and type can produce. If the outside humidity is low then the unit may not be set up properly. Windows and doors must be left open and cross ventilation provided for. Please review the quick guide included with each unit for more detailed instructions.

How come the fan is running but no cool air is coming out?

If the unit is set up with the proper cross ventilation and the outside air humidity is low, then first check and make sure that there is sufficient water in the tank. The water indicator on the front or top of the unit should be in the full position. Next check and make sure that the cooling knob on the unit is in the on position and that water is flowing over the pads. If sufficient water is present, then, on pedestal models (model # 600, 700, 900, and 1000) the pump drive belt may be worn out. To check, remove the back of the cooler, following the instructions in the operation manual. Note: Be sure to unplug the cooler before you access the inside of the unit. Check the black belt that connects the fan and the pump. If the belt has slipped off the fan and pump pulley, or has been broken, it will need to be replaced. You can order a new belt by getting in contact with us. When replacing a belt be sure to follow the diagram pasted near the fan inside the unit.

Why do you have to have windows and doors open?

Unlike refrigerated air conditioning, to enable an evaporative cooler to perform to its maximum potential, it is necessary that it draw warm, dry outside air across the water saturated pads. This causes evaporation to take place and that results in a drop in air temperatures. However, this cooling process increases the humidity of the air that enters the room. The increase in humidity necessitates that a window or door on the other side of the room be left open to allow the moist, cool air to exit. If the cooler were allowed to operate in a closed room, it would be able to draw only the air inside the room, air that is already saturated with humidity. If allowed to persist the temperature and the humidity levels in the room would quickly rise to an uncomfortable level. Following the quick guide set up instructions included with each unit is critical for getting the maximum performance from your evaporative cooler.

How much water do I put in?

The amount of water required will vary depending on the size of the unit you own. To help determine the correct level, each cooler is equipped with a water level indicator. It can be found on the top or the face of the unit. Add water until the indicator shoes that the water reservoir is filled. Water will leak from the unit if it is overfilled.

At start-up, the air has a slight odour?

Occasionally an evaporative cooler may give off a slight odour when first put into use. To eliminate this odour, run the unit for an hour, drain all the water from the tank and add fresh water. If odour persists repeat the above procedure until it is eliminated.

How often do I have to fill the unit?

The length of time will vary depending on the dryness of the air and the speed at which the cooler is running. Typically water supplied should last from two to four hours.

Can the pump run dry?

The unit can be safely run without water in the tank. It will cause no harm to the cooler or the water pump.
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