• Designed for Make-up Air Units Applications in Extreme Climate.
  • ETL Recognized air heater / duct furnace module – ANSI Z83.8 Gas-fired duct furnaces.
  • Available with on/off, two-stage or electronic modulating control systems-all direct spark ignitions.
  • Units can be applied to both vertical and horizontal airflows downstream of refrigeration systems.
  • 304 stainless steel heat exchanger – longer life and low maintenance.
  • Low airside pressure drops.

Application Guidelines Product Specification User Guidelines OEM Instructions Submittal / Order Information

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Model NumberPDFMax Input MBHMax Output MBHMax Avail. Turndown (Nat)Max CFMMax APD @ Min RiseMax Temp RiseMin CFMMin APD @ Max RiseDim ADim BDim CDim DWeight (Lbs.)Total Amps 120VTotal Amps 208V 230V
HHA150A B C D E F G P Q15012010 to 137040.191258890.0118.9728.3544.0712.6111842.5
HHA225A B C D E F G P Q22518010 to 155560.2712513330.0225.4728.3544.0712.6114242.5
HHA300A B C D E F G P Q30024010 to 174070.3312517780.0231.9728.3544.0712.6116742.5
HHA400A B C D E F G P Q 40032010 to 198770.4312523700.0338.4728.3544.0712.6122142.5
Note: For Propane gas, turndown is 60% of stated natural gas turndown.