Reznor's OH oil-fired unit heaters are available in inputs of 118,000, 173,000 and 229,000 BTUH with 82% efficiency output. These completely packaged unit heaters burn No. 2 fuel oil.

OH Product Literature


Key features of the OH

  • 82% efficiency
  • Full automatic, thermostatically controlled operation
  • Low stress, 18 gauge steel heat exchanger
  • Heavy, 13 gauge steel combustion chamber
  • 115/1/60 supply voltage
  • 24-volt control voltage


  • Not certified for residential use.
  • A UL listed (or equivalent) oil supply tank must be used with Reznor oil-fired heaters. Model OT-250 fuel tank is available from Reznor.
  • UL listed
  • 250-gallon capacity
  • WorkBench top

Let's Get Started