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THE HEATWAVE – Residential Shop/Garage Radiant Tube Heaters

The Safe, Efficient and Affordable Solution for Heating your Garage or Workshop. Perfect for Smaller Garages & Workshops With Lower Ceilings.

The Heatwave

At 40,000 BTUH, 8′ in length, and only 8 3/4″ from bottom to top, the Heatwave can fit in smaller shops easily, and can be installed in building with ceilings as low as 8′. Perfect for garages and workshops, the Heatwave can also be used anywhere that space constraints make other heating equipment difficult or impossible to use.


– 40,000 BTUH
– Natural gas (model GH40N) and propane (model GH40P) fired models built to order with no field conversions required.
– Reliable electronic hot surface ignition.
– Built with 100% North American made electronic controls.
– Continuous combustion monitoring with three to five ignition trials before 100% safety lockout.
– Totally enclosed blower motor with internal thermal overload protection. Blower motor is externally mounted for ease of accessibility and to simplify intake – air connection (4″ combustion air intake duct adapter comes standard).
– Dual air proving switches monitor combustion air and exhaust airflow for safety.
– Flame observation port to visually observe combustion.
– Factory ready to accept either 24V or 120V controls.


– Emitter tubes are 3″ diameter, 16 gauge North American steel.
– Primary combustion tube made of high temperature, high emissivity specialty alloy.
– Secondary tubes constructed of 16 gauge carbon steel for high emissivity.
– Swedged tube for ease of installation – no couplers or clamps required at joints.
– Emitter tubes provided with a 20 year burnout guarantee.


– Highly efficient, wide angled aluminum reflectors – engineered to reflect maximum radiant energy over the largest effective area possible.
– Highly polished material for increased reflectivity.
– Steel hangers with suspension points for both flat and angle mounting of reflectors.

Operation and Installation Instructions
Full installation/operation instructions for the Heatwave radiant tube heater (PDF 4.5 MB)

Typical Heatwave Installation
Heatwave Horizontal Clearances
Heatwave Angled Clearances
Heatwave Specifications

How Does Infrared Radiant Heating Work?
Radiant heaters heat an area in the same way that the sun warms the Earth. Infrared energy (heat) from the sun impacts the Earth and raises the temperature of the Earth’s surface. As the surface warms, it releases that heat into the surrounding area by the process of convection. Radiant tube heaters operate in the very same way – heat is transmitted directly to people, objects, and surfaces which then release the heat via convection to the surrounding air.

Infrared vs Forced Air

Other methods of heating rely on raising the temperature of large volumes of air in order to raise the ambient temperature of the room. As the air becomes hotter, it rises to the ceiling, heating hundreds of cubic feet of unused space before heating the floor, surfaces, and people within the space. Radiant tube heating allows you to directly heat your target areas. You are able achieve your required temperatures with fewer BTU’s, while using less fuel, and while ensuring that your fuel dollars are spent where they are needed most – heating the people, air, and objects within the room.

Do radiant heaters heat the objects in a space, or the air?

The answer is that radiant heaters do both! It is a common misconception that radiant heaters do not heat the air in a building. While it is true that air is not used as the medium to transmit the heat, the air is indeed heated when radiant heaters are used. When the mass in a building (floors, walls, objects) are warmed after absorbing the infrared energy directly, a portion of that heat energy is transmitted into the air via the process of convection.

Remember – radiant heaters are most commonly controlled by thermostats, and thermostats measure air temperature, not the temperature of the objects in a room!

What types of Radiant heaters are there, and what are the differences?
Radiant heaters are divided into two categories based on how hot the radiant emitter (heat exchanger) gets. Low intensity radiant heaters, such as a tube heater, run emitter temperatures of between 600-1100F (315-590C), and emit no visible light when running. High intensity radiant heaters run much hotter, between 1500-1800F (815-1000C), and are easily distinguished by the fact that the emitter glows bright red when running.

Both high and low intensity radiant heaters have their advantages and each offers superior performance in different sets of circumstances.

What Are The Benefits of Using Radiant Heating?
Radiant heating provides many benefits over other heating methods. They are energy efficient, environmentally friendly, quiet running, easy to install, have very little maintenance requirements, are simple to service, and best of all they have very low operating costs.

Why is Radiant Heating More Efficient Than Other Heating Methods?
The primary reason is that heat is directed at the objects and people where it is required, and does not rise into the ceiling as with other methods. Warm floors means worker comfort at lower thermostat settings. Hardly any energy is lost between the radiating surface and the target area because air is a poor absorber of infrared energy.

Additionally, Radiant Heating provides fast heat recovery from doors opening and closing. As building surfaces (ie. floors) are warm, temperatures are recovered faster after overhead doors have been opened. Because heat is created at the floor, ceiling temperatures are lower, reducing heat loss through the roof. The benefits of radiant heating abound and vary according to application.

What Kind of Cost Savings can be Expected?
When conventional forced warm air heaters are replaced with infrared heaters it is commonplace to achieve fuel savings of 30% – 50%. The New York State Inter Departmental Fuel and Energy Committee have claimed fuel savings as high as 50% since switching to Radiant Tube Heating. Fuel savings of greater than 50% are not uncommon.

But don’t take our word for it! Many energy providers and local utilities have recognized the fuel savings benefits of using radiant heaters to heat commercial, industrial, and agricultural spaces. Utilities such as Enbridge, Union Gas, and Gaz Metro all offer continuing energy efficiency rebates when replacing less efficient methods of heat with radiant heating equipment.

Where can Radiant Tube Heaters be Used?
Radiant Tube Heaters can be used practically anywhere, indoors or out! Our satisfied customers come from all different types of industries and professions. They are used in aircraft hangers, factories, warehouses, foundries and gymnasiums. They are also well suited to areas such as loading docks, race track stands, arena bleachers, outdoor restaurants and around swimming pools.

Outdoors, Radiant Tube heaters can be used for snow melting and de-icing; as well as car washes and other hostile environments. They can be used commercially in restaurant patios, and entry ways. Residentially they are the perfect heating system for garages and workshops.

The Heatwave in Garage

For more information on INFRARED RADIANT HEATERS please call 416-668-4607 or email info@davesducts.com

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