Sterling Hvac GG045A1NSA110 Gas Unit Heater 45000 Btu/h

Product Description

The STERLING HVAC GG045A1NSA110 is a power-vented, gas-fired propeller unit heater rated at 45,000 BTU/h and engineered for reliable space heating in demanding environments. It uses a single-orifice burner system paired with 20-gauge tubular heat exchangers to deliver 82% or better thermal efficiency. Direct spark ignition eliminates the need for a standing pilot, reducing maintenance and improving reliability. A 321 stainless steel burner box resists corrosion in damp or dusty conditions. Licensed HVAC technicians and mechanical contractors install this unit in commercial and residential applications where a compact, ceiling-mounted heating solution is required.

The GG045A1NSA110 is suited for residential garages, warehouses, workshops, agricultural buildings, and light commercial spaces where ceiling or overhead mounting is practical. It ships ready for natural gas service and includes an LP gas conversion kit for propane applications. For dusty or damp environments, an optional field-installed combustion air inlet kit allows conversion to separated combustion, keeping indoor air quality concerns from affecting burner performance. The unit carries ETL certification specifically for residential garage installations, making it appropriate for permitted residential projects.

Key Features

• 82% or better thermal efficiency with tubular heat exchanger design
• Single-orifice burner system with 321 stainless steel burner box for durability
• Direct spark ignition — no standing pilot required
• Power-vented operation with OSHA-compliant fan guard
• Field-convertible to separated combustion with optional combustion air inlet kit
• LP gas conversion kit included; ships configured for natural gas
• 10-year limited heat exchanger warranty

Compatibility

The GG045A1NSA110 belongs to the STERLING HVAC GG Series, which covers power-vented propeller unit heaters ranging from 30 to 120 MBH. It is ETL certified for residential garage installations and is designed for natural gas service with included LP conversion capability.

Installation Notes

Installation must be performed by a licensed HVAC or mechanical contractor in accordance with local mechanical codes and the manufacturer's installation instructions. Shut off the gas supply and disconnect electrical power before any service work. Terminal strip low-voltage wiring requires correct thermostat hookup before startup — consult the wiring diagram supplied with the unit. Separated combustion conversion requires the separately sourced combustion air inlet kit and must be completed before the unit is placed in service in dusty or damp environments.