Indoor Products > Unit Heaters
Gas-Fired Unit Heaters/Duct Furnaces
Sterling Gas fired unit heaters / duct furnaces are available in three basic models, Propellor, Blower and indoor duct furnaces. To assist in your individual application needs, each model is offered in multiple sizes and configurations.
Oil-Fired Unit Heaters
For those applications where oil is the fuel of use, Sterling offers a complete line of Oil fired unit heaters designed to be utilized with #2 heating oil.
- Oil-Fired Unit Heater Models
Steam & Hot Water Unit Heaters
As the leading producer of Steam and Hot water unit heaters, Sterling offers multiple types and sizes to meet your specific needs. Used in applications that utilize a centralized boiler system.