| Air Heating & Heat Recovery |
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| Direct Fired Make-Up Air Units |
| Short Lead Times. 1,000-60,000 CFM at rates of 100M-6,480M BTU with 30:1 turndown. |
| Indirect Fired Make-Up Air Units |
| Short Lead Times. 3,500-57,000 CFM at rates of 240M-4,500M BTU. Three or four pass heat exchanger for maximum efficiency. |
| Air Turnover Units |
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Short Lead Times. 4,500-100,000 CFM at rates of 240M-4,500M BTU. |
| QDT Heat Pipe Heat Recovery |
| Use heat pipes to capture energy out of HVAC or industrial exhaust ventilation air and return the energy to the space. Ideal for meeting new state energy code requirements for heat recovery. Standard energy recovery of 60% to 70% or more is available. In HVAC applications, the TRU can recover both heating and cooling. Most TRU's require no moving parts easing installation and maintenance. |
| QDT Indirect Evaporative Cooling & Heat Recovery |
| Using an indirect spray of water on the exhaust side of a heat pipe to get free cooling without any increase in indoor humidity. |
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