OVERVIEW

Reliable Heat. Compact Design. Year-Round Comfort.

Transform your garage or workshop into a usable space in every season with the Sterling GG Series Gas-Fired GG045A1NSA11 Unit Heater — engineered for efficiency, quiet operation, and long-lasting performance. Designed with a low-profile layout and tubular heat exchanger technology, these heaters deliver consistent warmth without taking up valuable space. Ideal for residential garages, commercial workshops, and outbuildings, the GG Series is certified for non-occupied spaces and built for effortless installation.

Powerful & Efficient Heating

The Sterling GG Series combines advanced tubular heat exchanger design with a single-orifice burner system, ensuring maximum heat transfer and minimal energy waste. With its 45,000 BTU heating capacity this propeller unit heater provides dependable warmth while maintaining industry-leading operating efficiencies. Every unit is designed for standard or separated combustion out of the box, giving installers flexibility for a wide range of venting and air-intake setups.

Smart Design for Limited Spaces

With its low-profile construction and quiet fan operation, the GG Series is the perfect solution for tight garage ceilings, shops, or storage areas where space is at a premium. Each model is thermostat-controlled for precision comfort and includes optional combustion air inlet kits for concentric venting or sealed-combustion configurations. The result — clean, reliable heat that keeps your workspace comfortable and clutter-free.

Built for Garages & Tough Environments

The Sterling GG Series Garage Unit Heater is ETL-certified for residential garage use, meeting all requirements for non-living space heating applications. Units include a factory LP gas conversion kit and components designed for dusty, damp, or demanding conditions — ensuring dependable performance wherever you need heat most. A limited 10-year heat exchanger warranty provides added peace of mind for long-term reliability.

QUICK FACTS

• 45,000 BTU
• 83% AFUE thermal efficiency
• Power vented
• Standard or Separated Combustion capable out of the box
• Reliable direct spark ignition with redundant single-stage gas valve
• Natural gas with LP kit included for field conversion if needed

Warranty

The GG045A1NSA11 comes with a standard 10 year heat exchanger warranty from the manufacturer.

Additional Information

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