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Hazardgard SH20M30B

Model: SH20M30B


For more than 30 years, industrial professionals have trusted Hazardgard ® to deliver safe and reliable cooling in the most extreme conditions. Hazardgard ® is specifically designed to cool laboratories, control rooms, living quarters, storage areas and other enclosures situated in hazardous locations; where specific volatile flammable liquids or gases are handled or used within enclosed containers or systems.

Performance in Extreme Conditions

Hermetically sealed reciprocating compressor is cooled during the refrigeration cycle, which allows the unit to tolerate higher outdoor temperatures up to 130 F/55 C. Equipped with hot gas bypass for cooling operation at low ambient temperatures, down to 45 F/7 C without freezing.

Durability & Reliability

Robust engineering, commercial grade components and extensive field testing provide the durability and safety required in hazardous locations.

Meets T4 Temperature Classification

Unit surface temperatures will not rise above 275°F/135°C. Hazardgard ® can tolerate higher outdoor temperatures up to 130°F/55°C. Unit will operate at low ambient conditions without freezing at outdoor ambient temperatures as low as 45°F/7°C.

Coated Coils for Corrosion Resistance

ElectroFin ® 5-stage, immersion ecoat process, or Diamonblue Advanced Corrosion Protection ® on 100% of metallic surfaces on the outdoor coil provides outstanding corrosion resistance protection and extends the life of the unit, especially in coastal or corrosive environments. MODEL SH24N30A ONLY.

The Friedrich Advantage

Hazardgard ® s reliable design is backed by robust engineering. Used across the globe, Hazardgard ® is a tested and reliable product and not a quick-fix, job shop alteration.


Hazardgard ® is designed with a slide-out chassis for more permanent installation and easier access for maintenance. Sleeve dimensions have remained the same for 20+ years for easy replacement. The unit installs in a window or through-the-wall.

Model SH20M30B
Operation Cool only
Cooling BTU 21000/21000
Reverse Heating BTU ---
Voltage 230/208
EER 9.7/9.6
COP @ 47°F ---
Cooling Area (Sq Ft.) ---
Cooling Range ---
SEER ---
Refrigerant R-410A