The portable Service Purgeâ„¢ Model PSP-HP-1 high-pressure refrigerant purger can be used to get air-logged chillers back on-line, says the company. It has a 1/4-inch hose hookup. According to the manufacturer, it will purge down a typical chiller in less than an hour. The purger can be used for R-12, R-22, R-134a, and other refrigerants. The unit weighs about 60 pounds.

Redi Controls Inc., 755 East Main St., Greenwood, IN 46143; 800-626-8640;

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