FAQ

Because the air being pumped in collects heat and moisture and impurities from inside the building and it must therefore be exhausted. The Evaporative Air Conditioner does NOT recirculate the inside air, and if you close the building the effectiveness of the machine will be greatly diminished and you will become very uncomfortable.

In most cases, it does slightly. But remember that the temperature has also dropped. It is the combination of temperature and humidity that creates human comfort, and Evaporative Air Conditioners are used so widely around the world because they can create comfortable conditions. For example, 80% humidity and 30 C is very uncomfortable, but 80% humidity and 16 C is quite comfortable. Furthermore, comfort is also improved by increasing air velocity in hot conditions and Evaporative Air Conditioners create sufficient air movement to also minimise the effects of humidity.

For good results, we recommend that outdoor humidity should not exceed about 60% in the hottest part of the day. And don’t forget that the humidity is lowest when the temperature is highest during a normal 24-hour cycle, and your humidity may be a lot lower than you think when the temperature is extreme. That is when you want maximum cooling and that is when your Breezair Evaporative Air Conditioner will function best.

Yes, because they are simple machines. Those with V-belt drives need the drive system checked and adjusted once a year. Otherwise, you need to check and clean the cooling pads regularly, depending on the level of pollution in the environment – at least every 6 months. In clean locations, once a year is enough. Clean cooling pads mean the highest cooling performance and that is what you want. Check the water tank (reservoir) once a year and clean out if necessary. Follow the Owner’s Guide book.

Breezair machines have a Bleed feature (some automatic, some manual) that allows a small amount of water to bleed to waste in order to reduce the salt concentration in the tank reservoir. This prolongs machine and cooling pad life and reduces maintenance.

Your Dealer is trained to work with you to select the correct model and quantity of Evaporative Air Conditioners for your project. Often multiple machines are required. The calculations may be made on the basis of the Heat Load in your building, or on the basis of the required Air Changes per hour for your locality. The calculation is based on traditional air conditioning practice and is completely transparent to anyone who wants more information.

Often, in large industrial buildings, there are locations within the building where the heat is concentrated for a variety of reasons. You don’t need to air condition the whole building, you only need that spot to be more comfortable. It might be a furnace operation, or a part of a painting process, or a concentration of people, or a cluster of injection molding machines. Spot Cooling by Breezair can dramatically improve the conditions in that location and improve your productivity and cost you much less than installing conventional air conditioning.

That depends on the temperature and humidity of the outside air (the ambient temperature). Have a look at the temperature chart below and you will see the answer. For example, at a temperature of 25 C and a relative humidity of 50%, the air from a Breezair Evaporative Air Conditioner will be at 20 C, i.e. a 5 C drop. Or, at a temperature of 35 C and a relative humidity of 30%, the air from the Cooler will be 25 C, i.e. a 10 C drop.

Cooler Discharge Air Temperature chart:

This chart represents approximate supply air temperatures based on 80% saturation efficiency at sea level. From tests carried out to Australian Standard 2913.

Yes, it does. The hot dusty air from outside is cleaned as it passes through the wetted cooling pads, where airborne particles are trapped by the cooling pads and many smaller impurities such as pollens and pollution are also reduced.