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All About Unit Heaters

All About Unit Heaters

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All About Unit Heaters


A unit heater is a type of space heater that is commonly used in commercial or industrial buildings to provide supplemental heat in large or open areas. These heaters are designed to be mounted on the wall or ceiling and can be used in a variety of spaces, such as warehouses, garages, workshops, and retail stores. Unit heaters are known for their efficiency and ability to quickly heat large spaces, making them a popular choice for heating commercial and industrial buildings.

How Do Unit Heaters Work?

Unit heaters operate by drawing in cool air and passing it over a heating element, usually a coil or a heat exchanger, which then warms the air. The heated air is then blown out by a fan and distributed throughout the space. The process is controlled by a thermostat that measures the temperature of the room and adjusts the heating element accordingly. This allows for precise temperature control and ensures that the space is warmed to the desired temperature.

Types of Unit Heaters

There are several different types of unit heaters available, each with its own advantages and applications.

  1. Gas Unit Heaters: Gas unit heaters are powered by natural gas or propane. They are known for their high efficiency and ability to quickly heat large spaces. Gas unit heaters are often used in warehouses, garages, and other industrial settings.
  2. Electric Unit Heaters: Electric unit heaters are powered by electricity. They are easy to install and maintain, making them a popular choice for small commercial spaces or residential garages. Electric unit heaters are also quieter and produce zero emissions, making them a more environmentally friendly option.
  3. Steam Unit Heaters: Steam unit heaters are powered by steam and are commonly used in industrial settings or buildings that already have a steam system in place. These heaters are highly efficient and provide a consistent and even heat.

Advantages of Unit Heaters

There are several advantages to using unit heaters in commercial or industrial settings:

  • Efficiency: Unit heaters are known for their high efficiency and ability to quickly heat large spaces, making them a cost-effective heating solution.
  • Space-Saving: Unit heaters are typically mounted on walls or ceilings, which means they don’t take up valuable floor space in your commercial or industrial building.
  • Easy Installation: Unit heaters are relatively easy to install and can be mounted on walls or ceilings with minimal effort.
  • Flexible Placement: Unit heaters can be easily moved or repositioned if needed, allowing for flexibility in heating different areas of your commercial or industrial building.
  • Low Maintenance: Unit heaters require minimal maintenance, making them a hassle-free heating solution for your commercial or industrial building.

Considerations When Choosing a Unit Heater

When choosing a unit heater for your commercial or industrial building, there are several factors to consider:

  • Size and BTU Output: It’s important to choose a unit heater that is sized appropriately for the space you need to heat. Consider the size of the room, the insulation, and the desired temperature to determine the BTU (British Thermal Units) output that is required.
  • Fuel Source: Consider the availability and cost of the fuel source, whether it is natural gas, propane, or electricity.
  • Noise Level: If noise is a concern, consider choosing a unit heater that is known for its quiet operation.
  • Placement: Consider the available space and the best location for mounting the unit heater. Wall-mounted heaters are typically easier to install, while ceiling-mounted heaters may provide more even heat distribution.
  • Controls and Thermostat: Consider the type of controls and thermostat that are included with the unit heater. Look for features such as programmable thermostats or remote controls for convenience and energy savings.


Unit heaters are an efficient and cost-effective heating solution for commercial and industrial buildings. With their ability to

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