Heaters / Indirect Air Heaters

VariMax™ OTH (Once-Through Heater)

The VariMax™ OTH (Once-Through Heater) is a high efficiency, industrial, indirect-fired gas heater used to heat process air streams without contaminating the air with the products of combustion. The OTH is well-suited for recirculating ovens, dryers, makeup-air applications in cold environments, and industrial processes with moderate temperature rises.

• 80% min effectiveness
• Up to 150°F rise
• Up to 600°F discharge
• Flanged for duct mounting
• Optional gas train & control packages
• Complete heater box supply
• Complete heating packages available, including filters, dampers, fans and duct sections
• Available in 6 pre-designed sizes: 800 MBTU - 3,500 MBTU

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  VariMax™ OTH (Once-Through Heater)