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UH Series: Separated Combustion Unit Heater

The UH Series line of gas-fired, tubular exchanger, induced draft, hot air heaters are now available for use in commercial, industrial, agricultural and residential applications.   This line of heaters features a low profile design with a durable, powder-coated black enamel exterior and stainless steel louvers for an exceptional aesthetic appeal, and a swept-wing impeller with finger-proof fan guards for low noise operation.

Additional features include operational troubleshooting lights and and integrated mounting brackets for ease in installation.  The UH Series offers an out-of-the-box separated or power-vented combustion option.

UH Unit Heater Features

  • BTU range of 30,000 to 75,000.
  • Low profile design with durable, powder-coated black enamel.
  • Aluminized steel tubular heat exchangers.
  • Individual in-shot burners.
  • Stainless steel discharge louvers.
  • Finger proof fan guards are standard.
  • External operational indicator lights are standard.
  • External thermostatic connection.
  • Integrated mounting brackets accommodate joists on 16 or 24″ O.C.
  • 180º mounting.
  • Approved separated combustion can be field converted to power vented without additional parts or cost.


Typical Applications

The UH Series unit heater
is ideal for a multitude of
  • Greenhouses
  • Garages
  • Check-in/out Areas
  • Vestibules
  • Work Stations
  • Sport or Total Building Heat


  • Input Range: 30,000 to 75,000.
  • Gas Type: Natural or propane.  1/2″ N.P.T. connection.
  • Voltage: 120/60Hz VAC (primary); 24 VAC (thermostatic) – Single phase.
  • Vent Length: 3-ft. to 30-ft.
  • Average air temperature rise: 45ºF
  • Certification: ANSI Z83.8/CSA 2.6, commercial, industrial and residential use, indoor use only.
  • Limited Warranty: 1 year components, 3 years exchangers, 5 years burner(s). Extension available.


  • 120/60 Hz. VAC (primary)
  • 24 VAC (thermostatic)
  • Single phase
  • NG: 3.5″ W.C.
  • LP: 10.0″ W.C.
  • NG: 5.0″ to 14.0″ W.C.
  • LP: 11.0 to 14.0″ W.C.
  • 1/2″ N.P.T.
  • Field connect to valve.
  • Four (4) suspension points.
  • Slotted mounting brackets accommodate joists on 16 or 24 inch centers.
  • 180 mounting.
  • Category I or III venting.
  • Rear, horiz. discharge/inlet.
  • 3″ to 4″ inlet adapter included with UH-30 and UH-45 models.
  • ANSI Z83.8/CSA 2.6
  • Commercial/Industrial use
  • Residential use
  • Indoor use only
  • External indicator lights
  • External thermostatic connection
  • Approved for elevations 0 – 2,000 ft without modifications
  • Supplied standard as separated combustion
Input Range:
30,000 to 75,000 BTU/h
Gas Type:
Natural or Propane
Control Housing: Powder-coated Black Enamel
Heat Exchangers: Tubular Aluminzed Steel
Certification: ETL Listed North America
Limited Warranty: 1-3-5 (Components-Exchangers-Burner)
24V Controls: Thermostat Connection
Indicator Lights: Standard


 Available UH Series Models: UH-30, UH-45, UH-60, UH-75

UH Unit Heater Models


UH Unit Heater Dimension 2Specify natural (N) or propane (LP) gas.3Factory recommended mounting heights are provided as a guideline. Actual conditions may dictate variations from the above data.  Always maintain the published clearances to combustibles. Clearances published in UH Series manual and on warning label  supersede data shown on this website.


UH Series

UH Series Brochure UH Series Manual  UH Packing LIst
UH Brochure UH Manual UH Packing List
uh_spec-th LSH140_UH-FA-Concentric-Vent-Box-Inst_9-13-th
UH Submittal
Concentric Vent Box


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