Press Release

ClimateMaster Announces New DOAS
Water-Source Heat Pump Product Line

OKLAHOMA CITY, October 31, 2006 – ClimateMaster announces the availability of a new Dedicated Outside Air System (DOAS) water-source heat pump product line with EarthPure® (HFC-410A) Zero Ozone Depletion refrigerant or refrigerant R-22. Because a DOAS system pre-treats the ventilation air, it allows a building design that addresses the ASHRAE 62 outside air requirements, while maintaining proper equipment sizing for space conditioning. This design provides superior occupant comfort and reduces energy costs, especially when combined with an optional enthalpy wheel.

The ClimateMaster DOAS unit uses a unique method of heating 100% outdoor winter air without the need for a separate auxiliary heat source such as gas or electric resistance in most cases. The DOAS unit is effective down to 15°F [-9°C] winter design temperature. With an optional enthalpy wheel, the system is effective down to -10°F [-23°C]. In summer, the refrigerant circuit with modulating reheat and hot gas bypass provides precise leaving air dew point control. Leaving air temperature and dew point at part load conditions are controlled just as precisely with onboard microprocessor controls.

The Tranquility series (HFC-410A) and Genesis series (R-22) DOAS units are available in 3 through 100 tons [10.6 to 351.7 kW] in horizontal and rooftop configurations, and 4 through 30 tons [14.1 to 105.5 kW] in vertical configurations. An optional enthalpy wheel is available for horizontal and rooftop units. Sizing software and product literature, which is available on the ClimateMaster web site, simplifies selecting the DOAS units.

ClimateMaster, Inc. manufactures water-source and geothermal heat pumps, which are considered to be the most energy efficient and environmentally friendly type of air conditioning and heating products available on the market today.  Headquartered in Oklahoma City, ClimateMaster, Inc. is a wholly owned subsidiary of LSB Industries, Inc. whose common stock is traded over the American Stock Exchange under the symbol LXU.  For more information, visit www.climatemaster.com.