Metro Heating & Cooling

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Frequently Asked Questions About Evaporative Coolers How does an evaporative cooler work? Evaporative coolers circulate water across pads or other media. Air is blown across the pads, evaporating the water. This evaporation is a cooling process, cooling the air as it enters your house. Properly designed, a cooler will lightly pressurize the house with cool fresh air. The cooling will go to the areas where you ventilate, such as open windows, doors, up-dux or other vents. Ventilation and proper sizing are critical to the proper operation of your cooler. How much will a cooler cool my house? Different coolers have different cooling capacities and efficiencies. There is a mathematical equation based on the outside air temperature, dew point and pad design that will give an exact answer. With the Breezair cooler installed, you should be able to maintain a comfort level of about 74 to 78 degrees under the worst of summer conditions, and be able to make it cold enough to need a jacket under ideal conditions. As the humidity outside increases, the cooling efficiency is reduced. Evaporative coolers are usually used where the relative humidity is less than 60 percent. The drier the outside air is, the cooler the discharge air will be. How do you hook the cooler up to the water? When we install a cooler, we prefer to run all of the water lines on the outside of your house to prevent any damage that may occur if the water line has a leak. We usually use a piggy-back style hose bib that will attach to your existing hose bib. This piggy-back bib will allow the cooler to maintain proper water levels as well as allow you to still use the hose. Important note: Some sillcocks or hose bibs will drip water from the packing nut at the handle stem after the water is turned on. Usually, the packing nut can be tightened to eliminate this type of drip. If tightening the valve packing doesn't cure the drip, a new hose bib may need to be installed. This is not a cooler or warranty problem, it is a problem with worn or deteriorated valve packing inside your hose bib. Most of the time, the problem is not apparent when the water is turned off. In some cases, the water may be connected to a sprinkler system manifold. Water can also come from connections to the interior plumbing of the house. We do not recommend any cooler water line be run inside of any building. We have a disclaimer that removes any liability from us in the event of any leak from a waterline installed inside of any structure. If your waterline is hooked up under a sink, we will not service your cooler. How much water do they use? Coolers evaporate water to provide cooling. The water usage is dependent upon cooler size, operating speed, cooler design, comfort level desired and outside conditions. Breezair coolers typically use an average 60 gallons of water each day during the season. Water managers, auto drains and clean machines can increase this usage somewhat. How many windows do I need open? You need at least 1 square foot of screened ventilation opening for every 500 Cfm of airflow your cooler will deliver.

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