Q. How do portable air conditioners work?

A. Portable air conditioners draw warm air from the room through an intake vent. This air passes over evaporator coils containing a refrigerant, which absorbs the heat and cools the air. The refrigerant then moves to a compressor, pressurized, and heated further. The hot refrigerant releases heat in the condenser coils, cooling down and turning back into a liquid. The cooled air is recirculated into the room, while the hot air and moisture are vented outside through an exhaust vent, typically connected to a window or ceiling. This process helps keep the room cool and comfortable.

Q. Why do portable air conditioners need to be vented?

A. Venting is crucial for portable air conditioners because it allows the unit to remove heat and moisture from the room effectively. Without proper venting, the hot air generated during the cooling process would accumulate and negate the cooling effect. Venting ensures the heat is expelled outside, maintaining a comfortable temperature indoors. Venting also helps remove excess moisture, preventing mold and mildew growth. Proper venting ensures efficient operation, optimal cooling performance, and a healthier indoor environment.

Q. How many square feet does equipment cool?

A. As a rule of thumb, 400 square feet per 12,000 Btu/h (12,000 Btu/h equals one ton of air conditioning). There are, however, other factors that will affect the total heat load.

Q. What is a water tank used for?

A. The water tank is used for condensation removal. Portable air conditioners collect condensation in the tank at the base of each unit. Water tanks are included with the purchase of one-ton up to two-ton units.

Q. Are side and front clearances essential factors?

A. Yes, clearance is an essential factor, as well as dirty filters. The AC will not operate properly in both cases due to insufficient airflow. 24″ of clearance is the minimum for both the evaporator and condenser sides.

Q. How does evaporative cooling work?

A. Water flows from the top of the evaporative media, over, down, and through the media, and then back into the reservoir. Hot air is drawn into the cooler by the fan. This air flows through evaporative media. As the hot air moves through the press, it causes the water molecules on the media’s surface to evaporate, making the air drop as much as 20 degrees in temperature. The fan blows this cooler air throughout the room, allowing you to maintain a more comfortable temperature for your employees.

Q. Why does my evaporative air cooler smell weird?

A. A strange smell is typical for the first two weeks of usage. When installed correctly, our evaporative media products allow complete molecular evaporation of Water, ensuring a pure, clean air stream. However, when new, a small amount of aromatic molecules may evaporate along with the water molecules, which could be detected as a slight smell. If the smell bothers you, pour a cap full of fabric softener into the reservoir. It will help the pump and media. Just make sure to use fabric softener and NOT detergent.

Q. If the unit uses Water, how does it work with humidity?

A. The temperature drop is based on the temperature in the surrounding area. The higher the humidity in the area, the less temperature drop from the fan. In the dry western regions, evaporative coolers can drop 25 degrees instantly. In higher humid climates like the south, we naturally drop 10-15 degrees with only Water and up to 25 degrees with ice water.

Q. How often should I replace my HVAC air filters?

A. Your air filters should be replaced every one to three months, depending on usage. This is important to your HVAC systems’ performance and indoor air quality.

Q. Can you use a condensation pump?

A. Yes, except for the Airrex HSC-10 and HSC-11.

Q. What is the standard warranty?

A. Standard product warranty is one year, and it’s three years for compressors.

Q. What maintenance is required for Airrex portable air conditioners?

A. The only regular maintenance required is cleaning or changing the filters on the units and emptying the condensation. For more details, please refer to the operations manual.

Q. What is evaporative cooling?

A. As Water (or any substance) evaporates, the liquid left behind becomes cooler. What we think of as temperature is the average kinetic energy of the molecules of a substance. Molecules with higher kinetic energy move faster and are likelier to leave the liquid as a gas. When they do, they take this energy with them and leave behind molecules with lower kinetic energy and, therefore, lower temperature. This process is known as evaporative cooling. In many living organisms, including humans, evaporative cooling plays a vital role in maintaining body temperature. By releasing sweat, which is 90 percent water, humans can utilize the effects of evaporative cooling to give off heat to the surrounding air, even if it is warmer than their body temperature. When humans cool themselves, they give off heat and moisture to the surrounding air, causing it to become hotter and more humid and reducing its capacity to absorb additional heat and humidity. This layer of hot, moist air forms a blanket around the body, reducing its ability to release excess heat.

Q. What is the difference between a HEPACART and a DUSTBUGGY mobile containment cart?

A. We have two lines of mobile infection control carts for different applications. The flagship HEPACART mobile containment cart/ceiling access cart comes standard with an embedded, thoroughly tested, and certified negative air machine. HEPACART provides maximum protection from dust and pathogens and complies with ICRA levels I-IV. The DUSTBUGGY line is built to the same quality as a HEPACART yet designed to contain dust from ceiling work without a negative air machine. The DUSTBUGGY is ideal for less critical areas and complies with ICRA levels I-II. A DUSTBUGGY can be connected to an external negative air machine or in-field retrofitted to a HEPACART to comply with all ICRA levels. -What size HVAC system should I have? Unlike most people believe, there is no one size fits all sizing system for homes or businesses. The size of the HVAC unit depends on many factors. The only way to know the right size for your home or office is by having a licensed professional evaluate your heating and cooling needs and recommend an HVAC unit.

Q. How does a heat pump work?

A. A heat pump transfers heat energy from one source to another. In the winter, when your heat pump acts as a heating system, it extracts heat energy from the outside air (even in near-freezing temperatures) and transfers it into the air in your home. Then, when summertime rolls around, it’s as easy as flipping a switch to change your heat pump to cool mode.

Q. Why are heat pumps more efficient?

A. Heat pumps are one of the most energy-efficient HVAC systems because they don’t burn fuel to provide heat. In addition to their high efficiency, they can operate as both a heating and cooling system, thus reducing the number of scenarios that require maintenance, repairs, and replacements.

Q. Are portable air coolers safe to use?

A. Absolutely! No chemicals or coolants are used, only Water that gets turned into vapor through the natural cooling process of evaporation. -How much space does the Cool Boss fan cover? We offer three portable evaporative air coolers covering up to 2,500 sq. ft.

Q. Are evaporative coolers more suitable for specific climates?

A. Evaporative coolers are most effective in low humidity and hot temperatures. They are less effective in humid climates or during rainy seasons.


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