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120,000 BTU, Power Vented, Hanging Furnace

120,000 BTU, Power Vented, Hanging Furnace

Model: Sterling GG120A1NSA11

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Model: Sterling GG120A1NSA11

You save: 22%
Compare to: $1,468.25
Or as low as
Volume Discounts

To use LP fuel, this unit requires an LP Conversion Kit. See Accessories

The Sterling model GG low profile gas-fired unit heater is a highly efficient, extremely versatile product. These propeller units combine the latest tubular heat exchanger technology with a unique single orifice burner system. Units are available in sizes ranging from 30 to 120 MBH in a compact, low profile design.

The Sterling model GG unit heater conforms with the latest ETL certification standards for installation in residential garages. Design certification and our low profile design make the model GG unit ideal for residential, commercial and industrial installations.

Standard Features

  • 82% Thermal Efficiency
  • Redundant Single Stage Gas Valve

  • Residential Certification

  • 20GA Aluminized Heat Exchanger 

  • 120/24V Control Transformer

  • 115/1/60 Fan Motor with Internal Overload Protection

  • Power Vented

  • Direct Spark Ignition

  • 20GA Baked Enamel Cabinet

  • 10 Year Heat Exchanger Warranty

  • OSHA Fan Guard

  • Right Hand Control Access - Field Convertible to Left Hand

  • High Limit Switch

  • Air Pressure Switch

  • Natural or Propane Gas

  • LP Gas Conversion Kit Included

  • Field Convertible to Separated Combustion with Addition of Combustion Air Inlet Kit

  • Easy Access Control Panel

  • 321 Stainless Steel Burner Box

  • Hanging Brackets Included

Heating Capacity
120000 BTU
Effective Heating Capacity (BTUs)
Efficiency Percentage (AFUE)
82 %
Fuel Type
LP Capable (Kit Required) / Natural Gas
Combustion Type
Power Vented
Motor Type
Permanent Split Capacitor
Number of Fans
Certified for
Commercial / Industrial / Residential
Piping Connections - Gas
0.5 inches
Vent Connection
4 Inches
Flue Pipe Diameter
Combustion Air Inlet
5 inches
dBa High
Product Weight
110 lbs
30 Inches
26.375 Inches
23.5625 Inches
120 Volts
60 Hz
Voltage Phase
Heat Exchanger Warranty
10 Years
Parts Warranty
1 Years

Enjoy free shipping on any accessories purchased with the Sterling GG120A1NSA11.

Digital Thermostats
Honeywell TH6110D1005
FocusPro 6000 Universal Programmable Thermostat - One Stage Heat One Stage Cool (Standard Screen)
Honeywell TH5110D1006
FocusPro 5000 Universal Non-Programmable Thermostat - One Stage Heat One Stage Cool (Standard Screen)
Honeywell TH6110D1021
FocusPro 6000 Universal Programmable Thermostat - One Stage Heat One Stage Cool (Large Screen)
Honeywell TH4110U2005
T4 Pro Programmable Thermostat with stages up to 1 Heat/1 Cool Conventional Systems
Hanging Furnace Accessories
Sterling AS-X7-5
Sterling (GG 90-120) 5" - Combustion Air Inlet Kit
Manual Thermostats
Honeywell T822K1018
Mercury Free Econo Non-Programmable Thermostat Heat Only Low Temperature Scale
Honeywell T822K1042
Single Stage Heat Low Temperature Thermostat - (Good for Garages)
DiversiTech 6-GPK035
Gas Pressure Test Kit for 0" to 35" Water Column with Tubing Fitting and Case, Manometer
DiversiTech 6-HG15
0" to 15" Hydrogauge Manometer
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