Swamp Coolers - A Good Makeup Air Solution for Your Kitchen?

What Are Swamp Coolers?

Swamp coolers, also known as evaporative coolers, are an air conditioning system commonly used in hot and dry climates. They work by evaporating water to cool and humidify the air.

How Swamp Coolers Support Makeup Air

In a commercial kitchen, swamp coolers can be used as part of a ventilation system to provide makeup air. Makeup air is necessary for commercial kitchens to replace the air that is exhausted by the cooking appliances and other equipment. Without makeup air, negative pressure can occur, which can cause a range of problems, including increased energy consumption, reduced equipment efficiency, and the risk of dangerous gases such as carbon monoxide being pulled back into the kitchen.

How Swamp Coolers Work

Swamp coolers work by drawing hot and dry outside air through a wet pad or media. The water in the pad evaporates, cooling the air and increasing its humidity. The cool and moist air is then distributed into the kitchen through ducts and vents, providing makeup air and improving air quality.

Climate Considerations

There are several factors to consider when deciding whether swamp coolers are the right solution for your commercial kitchen. Swamp coolers work best in hot and dry climates, using dry air to function correctly. Swamp coolers may be less effective in humid climates.

Kitchen Size and Ventilation Needs

Another important factor is the size of your kitchen and the number of appliances and equipment that need ventilation. Swamp coolers are typically more effective in smaller spaces, so if you have a large kitchen or a high volume of equipment, you may need to consider other ventilation solutions.

Maintenance Requirements

It's also important to consider the maintenance requirements of swamp coolers. They require regular cleaning and changing of the wet pads to ensure they continue to function effectively and prevent mold and bacteria growth.

Are Swamp Coolers Right for Your Commercial Kitchen?

Overall, swamp coolers can effectively provide makeup air in commercial kitchens in hot and dry climates. However, it's important to consider the climate, size of your kitchen, and maintenance requirements before deciding. Consult a Hoodmart ventilation expert to determine whether swamp coolers are the right solution for your specific needs.

Map infographic showing tempered makeup air requirements by state across the United States, with states color-coded to indicate where untempered fresh-air makeup air is permitted, where tempered makeup air is required in some jurisdictions, and where tempered makeup air is required statewide, with a note that UL 710 listed hood designs achieve the lowest CFM per foot for 700-degree appliances.
Evaporative coolers are a viable makeup air option in dry climates where untempered fresh-air supply is permitted — primarily southern and western states shown in gold on the map. In states where tempered makeup air is required, evaporative cooling does not meet the conditioning standard and a dedicated tempered unit is necessary. Confirming your state and local jurisdiction's makeup air category before selecting equipment avoids a costly substitution later in the project.
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