Facts about Radiant Efficiency

Since AHRI testing and ratings methods are in its infancy, there is still a great deal of confusion regarding radiant efficiency within the industry, resulting in confusion in the market. Because the message is getting misconstrued by some infrared manufacturers, Roberts-Gordon, the infrared innovator, was compelled to set the record straight and deliver an unbiased explanation of radiant efficiency, testing and ratings methods, standards, etc. The goal of this white paper is to present the facts, backed by data, to educate the industry and the market so consumers can make informed buying decisions regarding gas-fired, low-intensity infrared equipment.

Reflectors for Infrared Tube Heaters

Redirecting heat, maximizing heater efficiency

Reflectors are designed in many different shapes and sizes, all of which produce different heat patterns. Reflectors direct heat and energy from the radiant tube, down into the space. The design of the reflector is critical to deliver as much of the energy from the heated tube to the floor level. A flawless design would allow for each reflector bend to direct heat to the space, without any rays directed back to the tube.

Roberts Gordon offers parabolic reflectors with two levels of efficiency - standard and high efficiency. Both reflector variations are available in aluminum and stainless steel. The type of material used and its reflective properties influence the effectiveness of the reflector. Aluminum is the preferred of these two options because of its reflective qualities. Stainless steel is traditionally used in outdoor applications

Aluminum's reflective qualities make it the ideal metal for infrared tube reflectors.

We have been bending reflectors in Buffalo for over 50 years now. The manufacturing process has remained the same for decades, but now is the time for change! With new innovation and design, improvements have been made for ideal workflow and product consistency. The high efficiency reflector will be formed with a coil fed system. The standard reflector is manufactured using more traditional methods with prefabricated sheet stock. Utilizing a coil fed system keeps the manufacturing process consistent and reduces marginal material shifting.

Take an insider look at 'Roll Former Alley' in the plant in Buffalo, NY




Reflector Designs with Different Heat Patterns
Infrared Tube Reflector

Competitor Reflector 1

Infrared Tube Reflector

Competitor Reflector 2

Infrared Tube Reflector

Competitor Reflector 3

Roberts Gordon Standard Infrared Tube Reflector

Roberts Gordon
Standard Reflector


Roberts Gordon has re-designed and re-engineered the reflector. The high efficiency reflector has a wider heat pattern resulting in additional heat coverage with less amount of btus required. Additional reflector bends placed on a gradually curved parabolic shape decrease infrared tube heat loss. Overall, the high efficiency reflector has a higher measured radiant efficiency, as tested per the AHRI Standard 1330 released early 2015. 

The high efficiency reflector can be added to or replaced with any existing Roberts Gordon infrared heating systems to maximize heater efficiency and reduce fuel cost.




High Efficiency Reflector Advantages

High Efficiency Reflector Feature

High Efficiency Reflector Benefit

Additional Bends

Increased angles deliver more heat consistently to the space

Gradual Bend

 Multiple bends designed to obtain maximum radiant output

Added Rigidity

 Integrated stiffeners allow for a consistent form during thermal expansion

Wider Profile

Increased heat coverage produces optimal heat pattern