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Door Heaters

A reliable source for Door Heaters information and leading Door Heaters Companies & Manufacturers.

Commonly used in shops, hotels, entrance halls and reception areas, and in workshops and warehouses, door heaters prevent exterior cold air from entering a large space every time the door is opened, and prevent the loss of heated air in the same way. Read More…

Door Heaters Door heaters provide a stream of heated air across frequently opened doors and entrances of buildings in order to create a barrier between the air outside and the air inside to avoid heat loss and unnecessary energy expenditure.
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Leading Manufacturers

Fortville, IN  |  800-527-4328

Superior Radiant Product is the global innovation champions in the heating industry, saving energy for future generations. SRP offers a complete range of low and high-intensity energy efficient infrared heaters for industrial, commercial, agricultural and residential applications worldwide.

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Superior Radiant Products $$$

Charlotte, NC  |  800-438-4936

Space-Ray is an international manufacturer of infrared radiant gas heating products. We are a division of the Gas Fired Products Group of companies which manufactures energy efficient overhead radiant heating, space heating, infrared heaters and process heating systems in the UK and USA. We design and manufacture energy efficient gas heating products that will stand the test of time.

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Space-Ray, Inc. $$$

Wexford, PA  |  800-438-2503

Established in 1963, Penn Radiant has continuously focused on providing person attention and service to each customer. Our founder, Del Lieb, set that standard, and he believed that by providing solutions, we provide production. We offer a vast array of industrial heating and cooling to commercial and industrial applications. We offer products, such as infrared heaters, gas heaters, ventilators, blowers, and more, from top of the line manufacturers.

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Penn Radiant Products $$$

Hermitage, TN  |  615-834-4044

ProTherm Industries provides electric infrared heaters, infra red heaters, radiant infrared heaters, pre wired controls and complete infrared systems used in a wide range of industrial heating applications.

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Protherm Industries, Inc. $$$

Manasquan, NJ  |  800-756-5772

Our leading products offer heating solutions for industrial, recreational and commercial buildings. Since our foundation, Thermal Innovations Corporation has offered heaters that are the preferred choice of architects, engineers, HVAC contractors and building owners when constructing or renovating. Choose from our extensive line of products. Call today for more information!

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Thermal Innovations Corporation $$$
placeholder image Superior Radiant Products Space-Ray, Inc. Penn Radiant Products Protherm Industries, Inc. Thermal Innovations Corporation

When a door is opened into a sealed building, a vacuum is created that encourages the movement of air. Installing a door heater disrupts this process and prevents the exchange of air from inside to outside. Door heaters can be gas-fired - using a gas flame to create heat, they can use boilers and steam as a heat source, or use an electric element to create heat. An air propeller, or fan, will be needed to force air across the door opening and to create enough resistance to prevent interior-exterior flow of air. Therefore, doorway dimensions need to be taken into consideration when determining size and capacity of door heaters to ensure adequate coverage.

Larger door openings such as warehouses or garages may require more than one heater, and these can be placed side by side to fully cover the open space. Door heaters are ceiling or wall mounted but for optimal performance and results should be placed as closely as possible to the top of the door.

Typically a switch is installed on the doorway, or connected to the opening mechanism of the door, that turns the door heater on each time the doors are opening and closing as this is when the barrier is required to prevent heat loss. The continual operating of the door heater would result in high energy expenditure and the potential for overheating within the space itself, therefore a trigger switch or sensor is a necessary part of the mechanism.

In door heaters, there are options for adjustable levels of heat and airflow. Some units can be run without the heating elements on, and therefore are able to be further used in summer months. In warmer weather, the purpose of a maintaining the interior temperature of a space to avoid extra energy loss is similar - to prevent the loss of the air temperature within the building (in this case cooled air) and to prevent the entry of the outside air. Another use for door heaters is for the general heating of a space when a high level of space heater is required. Some models of door heaters are adjustable and the heated air flow can be directed into a room rather than across the opening.

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