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Direct-Fired THP-4500

Direct-fired make-up air heaters work well in most types of construction applications, helping to control moisture and air contaminants. These heaters operate similar to a permanent air handler, providing evenly distributed, warm, dry air. Installed either inside or outside, THP-Series heaters draw 100% fresh air through the unit’s intake and discharge tempered air controlled by a remote thermostat.

  • Electronic modulating burner controls
  • Remote space thermostats
  • Centrifugal blower

THP-4500 Specifications

CFM 24,500
Power Supply 460/3/60/30*
Dimensions (in) 125x68x66
Weight (lb) 3,192
Base Skid
BTU/HR Maximum 202,500 – 4,500,000
Natural Gas 2″ NPT
Propane 1″ NPT
* Other Power Options Available

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