Air conditioning coil cleaning is an important air conditioning maintenance procedure that sometimes takes some patience, and usually takes a lot of water. First, you have to make some common sense evaluations.

The editors of The NEWS combed through every aisle of the 2011 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo) in the Las Vegas Convention Center in order to provide complete, comprehensive coverage of the show. This feature article highlights all of the new products that The NEWS' editorial staff found.

Some years ago it was common for air-cooled condensers to develop leaks, resulting in unpredictable shorter service life. By studying the causes, it’s possible to come up with solutions. It became obvious that vibration was the major culprit, and thermal expansion/contraction creates some specific problems where the hot gas first enters the coil.

Ammonia in compact systems using micro-channel technology. Building warehouses as high-rises as a way to save energy and reduce ammonia refrigerant charges. Ammonia in integrated heating and cooling systems. These were just some of the directions technical papers took at the recent International Institute of Ammonia Refrigeration Industrial Conference.

The condenser is the component that rejects the heat from the system. Most equipment is air cooled and rejects heat to the air. The coils are copper or aluminum and both types have aluminum fins to add to the heat exchange surface area.

The TMW large water-to-water series geothermal heat pumps are available in sizes 360 (30 tons), and 600 (50 tons).

Has The NEWS ever considered doing a story on why condenser coils get dirty quickly?

Coils with insulated casings have been added to the company’s product capabilities. ThermiCoil™ insulated coils can be used for refrigerant and hydronic applications and can accommodate a wide range of airflows.

A heavy hurricane and tropical storm season may bring more corrosion damage to HVACR systems than we normally see. Now, as many contractors start to clean up systems, and others are scheduling preventive maintenance customers, coil care and corrosion prevention should be high on the work list.

Online coil selection software CoilPro is now available with new working fluids for the company’s full range of heat pipes. The fluids expand the range of operating temperatures for heat pipes from -30 to 200°C.