Rising energy costs combined with the basic need to optimize cooling and operational efficiency are key forces driving the changes we see in today’s process chiller designs.  More and more companies are moving to both “green” preventative maintenance practices and energy efficient equipment that provide greater heat rejection capability at lower operating costs.

When adopting green maintenance practices, companies are realizing the importance of protecting their condenser coils and are widely using air intake filter technology commonly known as “Cottonwood Filter Screens”.   When mounted over the condenser coils on older equipment, cottonwood filter screens keep the coils clean so the equipment operates at its designed efficiency level throughout the season.  When mounted to high efficiency systems where coils are closer together and can trap smaller debris between them – Cottonwood Filter Screens stop the debris before it gets into the coils and can become a problem.  Important Note: if high efficiency condenser coils are dirty, the equipment will not deliver the efficiency they are designed to deliver.   

Filter Screens Stopping Airborne Debris

Filter Screens Stopping Airborne Debris

If you are thinking that you would be trading the cleaning of condenser coils for cleaning filter screens – you would be correct;  however, the difference in the cleaning process is like night and day.   When cleaning condenser coils, traditional  methods call for the use of coil cleaning chemicals and pressure washers – This is typically a dirty, time consuming job which can be harmful to the coils and the environment;  Conversely, using cottonwood filter screens will keep debris out of the coils in the first place and when the filters need cleaning, all that is needed is a broom, brush, shop vacuum or garden hose – even the rain can rinse them clean.  Filter Screens do not require removal for cleaning and can reduce maintenance time and effort by up to 75%. By Randy Simmons

400 Ton Chiller Before Filter Screens