After facing a slow winter where much of the nation saw above-average temperatures and mild weather, contractors are gearing up for a busy summer season. To help them prepare, The NEWS introduces the latest cooling equipment available for the upcoming summer season.
During my 50 years in the HVAC trade, I have found that most technicians do not spend time learning about the compressor and the a/c system as much as they should. In their defense, they are simply too busy to take the time once they are out of school.
Many contractors (and big-box stores) try to grab customers’ attention by advertising the ubiquitous $29 tune-up. So is the $29 tune-up an effective marketing tool that can be used to beef up the customer base? Or is it a pernicious practice that lowers the bar for the HVAC industry? It all depends on your outlook.
The amount of condenser subcooling needed is system dependent. The more pressure drops — friction and static — associated with the lines and accessories that carry the liquid in the system, the more need there will be for liquid subcooling to prevent liquid line flash gas.
At 34 inches wide, the PACSlim-12 air-cooled portable air conditioner can roll through a standard doorway. The unit provides 12 tons (144,000 Btuh) of cooling. High-efficiency radial blowers with built-in variable-speed motors provide uniform airflow across the evaporator coil of the portable cooler.
Move over compression ratio, ring valve, and reciprocating compressors. There are two new terms to add to your refrigeration terminology: ‘bi-volt’ and ‘spool.’ The words relate to some of the newest developments in compressor applications.