CLIMACHEM, INC. SUBSIDIARY LISTING REVISED FEBRUARY 26, 1999 CLIMACHEM, INC. Northwest Financial Corporation Climate Mate, Inc. The Environmental Group International Limited LSB Chemical Corp. Total Energy Systems Limited Total Energy Systems (NZ) Limited T.E.S. Mining Services Pty. Ltd. Total Energy Systems (International) Pty Ltd El Dorado Chemical Company Slurry Explosive Corporation El Dorado Nitrogen Company (f/k/a LSB Nitrogen Corporation, f/k/a LSB Import Corp.) DSN Corporation Universal Tech Corporation The Environmental Group, Inc. International Environmental Corporation Climate Master, Inc. CHP Corporation Koax Corp. APR Corporation ClimateCraft, Inc. (f/k/a Summit Machine Tool Systems, Inc.) ACP International Limited (f/k/a ACP Manufacturing Corp.) ThermalClime, Inc. (f/k/a LSB South America Corporation)