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PKE is the new range of ECO Coils&Coolers branded air condensers launched by Luvata for commercial AC and refrigeration applications. It is the enhanced offspring of the PCE range (currently phasing out), with improved efficiency and optimized sound emission parameters. Like all ECO Coils&Coolers ventilated units, even the PKE range is available for CO2 applications. The PKE offers an improved hauling and fastening system, thanks to new features. Moreover, the side panels are removable allowing easy access to the units' internal compartments, which have been increased by 120 mm. In order to facilitate maintenance and service, the PKE range has also been equipped with special door holders with a hold open feature. For models with 4 and 5 fan motors, the number of doors has been reduced and the width has been increased, as to allow easy access to the internal components. Lastly, the base has been reinforced for particularly difficult installations. On the other hand, thanks to a compartment incorporated with the condenser to enclose the compressing and the electrical control units, called housing, the PKE range does not require long connection pipe-work, thus reducing the risk of possible leaks. The special internal surface of the compressor compartment has been designed so as to increase sound absorption, reveals the company's press release.

Johnson Controls, a global leader in building efficiency, announced the new LX Series of air conditioners and heat pumps by York, its leading air conditioning, heating, refrigeration, and ventilating company. They feature a MicroChannel coil with enhanced heat transfer characteristics, enabling them to achieve the desired performance levels with less coil surface area than competitive condensers and up to 50 percent less refrigerant. The units are available with environmentally friendly R-410A refrigerant as well as R-22. 14.5 SEER LX Series air conditioners use a compressor blanket and swept-wing fan blade for quieter operation. 15+ SEER can be achieved when the air conditioner is matched with a variable-speed air handler or gas furnace. A fully louvered steel coil guard, corner posts and a polymer mesh protect the condensing coils from damage. The unit's heavy-duty cabinet is made of powder-painted steel that resists corrosion and rust creep.\n\n\n\n\nIn addition, the MicroChannel coil offers better galvanic corrosion resistance than conventional coils. In testing, the coil withstood 7,000 hours of salt spray with a higher success rate than conventional coils at just 1,000 hours, making the units particularly desirable for seacoast applications, reveals the company's press release.\n\n

Long ago, the industry determined that the combination of copper tubing and aluminum fins provided the most efficient transfer of thermal heat in condenser coils. Manufacturers of residential units are not necessarily on that same page - or that line of thinking - today. Most manufacturers, if not all, are revising, have revised, or continue to revise their outdoor coil construction. One of the main objectives, of course, is to increase heat transfer efficiency, as energy efficiency is high on every homeowner's wish list. In the end, each manufacturer believes it has engineered and/or perfected - at least up to now - the most-efficient coil design. Some, like Goodman Manufacturing, have made changes as a direct result of the efficiency offered from R-410A refrigerant.