Presto W92 has a closed system design, so it can quickly heat things up and cool them down, says the manufacturer. It also allows the user to compensate for exothermic and endothermic reactions. Because it is a closed system, it can operate above the fluid flashpoint at high temperatures and work below ambient temperature in humid conditions without moisture condensation or ice buildup. It can be used to heat or cool at a scale from -133 to 482°F (-92 to 250°C) with an 18 kW heater. It can provide greater than 27 kW cooling power at temperatures above 68°F (20°C) and 10.5 kW cooling at -40°F (-40°C). 

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