Sterling GG gas heaters are an excellent option for heating garages, greenhouses, sheds, etc. Each Sterling GG heater includes: tubular heat exchanger, electronic ignition, power exhaust system, advanced diagnostic system for dependable worry-free operation, lots of safety features, high power fan to provide even heat distribution, rust-resistant aluminized steel exchanger, and a baked-on enamel finish made to protect them from harsh environments. Designed for propane or natural gas. Some wiring required. Requires 110/120v electricity.

Sterling GG Heater Features

• 82% efficient
• Made in the USA
• Certified for residential, commercial, and industrial use
• Direct spark ignition
• Power vented exhaust
• Separated combustion ready
• Stainless steel burner is standard
• Convenient diagnostic light and thermostat connections on outside casing
• Mounting brackets and conversion kit included
• 10 year warranty on the burner and heat exchanger

Heater Venting Options

Heater Upgrade Options

Extended Parts Warranty
This extends the included 1 year parts warranty to 3 years. If replacement parts are needed, they will be provided no charge and shipped for free during the life of the warranty. Click here for terms

Premium Freight Delivery
Add this option if you need your freight shipment to be unloaded off the truck for you onto your property. Otherwise you will need to assist the driver in unloading at the curb/street. Premium Delivery is also recommended if you require a smaller truck to access your location.Click here for more freight delivery details.

Heater Gas Type Setup
The heater will come equipped from the factory for whichever gas type you choose.
NOTE: A free conversion kit is also included in case you need to change the gas type in the future.

Stainless Steel Heat Exchanger
If the heater will be in a corrosive environment, upgrading to a stainless steel heat exchanger will increase the life of the heater. Units with stainless steel heat exchangers ship direct from Sterling. The current ship time is listed in the option selection area above. Must be ordered with heater.

2 Stage Gas Valve
Heaters with a two-stage gas valve start on the 1st stage at half output and only switch to the 2nd stage, full output, if the temperature inside the room continues to drop. This allows the heater to run more efficiently saving gas and money. Units with 2 stage valves ship direct from Sterling. The current ship time is listed in the option selection area above. Must be ordered with heater.

Elevation
If the heater will be installed at a location that is over 5000' above sea level, Sterling makes a special high altitude model for this application. Units setup for high altitude (above 5000') ship direct from Sterling. The current ship time is listed in the option selection area above. Must be ordered with heater.

Performance Specifications

For Greenhouse Sizing, use our Greenhouse Heater Size Calculator

Model	Application	BTU Input	BTU Output	W x D x H	Weight (lbs)
GG30	1 to 1-1/2 Car Garage 200 to 450 Sq. Ft.	30,000	24,900	30" x 25 7/8" x 12 3/8"	60
GG45	2 to 2-1/2 Car Garage 450 to 700 Sq. Ft.	45,000	37,350	30" x 25 7/8" x 12 3/8"	65
GG60	3 to 3-1/2 Car Garage 700 to 950 Sq. Ft.	60,000	49,800	30" x 26 3/16" x 15 7/8"	80
GG75	4+ Car Garage 950 to 1200 Sq. Ft.	75,000	61,500	30" x 26 3/16" x 15 7/8"	85
GG90	Large Garage or Shop 1200 to 1450 Sq. Ft.	90,000	73,800	30" x 26 3/8" x 22 5/8"	95
GG105	Large Garage or Shop 1450 to 1700 Sq. Ft.	105,000	86,100	30" x 26 3/8" x 22 5/8"	105
GG120	Warehouse or Shop 1700 to 2000 Sq. Ft.	120,000	98,400	30" x 26 3/8" x 22 5/8"	110

Sterling GG Heater Specs and Dimensions - Includes all of the Sterling GG heater dimensions and performance data.
Sterling GG Heater Installation Manual - Complete instruction manual that comes with each Sterling GG heater.
Sterling GG Heater Thermostat Wiring Diagrams - Includes wiring diagrams for the most common thermostats.

Model # GG105A1NSA11, GG105A1PSA11, GG105A2NSA11, GG105A2PSA11, GG105A1NSB11, GG105A1PSB11, GG105A2NSB11, GG105A2PSB11, 4070650, 4070655