CORAYVAC® Custom Engineered Radiant Heating System

The Premier Option for Industrial Comfort

Roberts Gordon Infrared Heaters Indoor view

Engineered for Unlimited Heating Possibilities

CORAYVAC® low-intensity infrared tube heaters provide a fully engineered design and layout option for complete building comfort. Each application receives a customized infrared heating system featuring modulating burners-in-series.

Burners-in series allows for maximum heat coverage in the space, minimizing building exhaust penetrations. With a range of Btu/h inputs available, burners can be placed 10 feet – 70 feet apart for uniform heat coverage. 

Designed as a high efficiency condensing system, more heat from the system is utilized within the space. Lower exhaust temperatures provide energy and fuel savings, reducing the cost of high heating bills. Heating bills at bargain prices means CORAYVAC® saves money!

For optimal heater control, Roberts-Gordon CORAYVAC® Modulating Heating Control delivers the most diverse control panel offering in the industry. We are the only manufacturer that senses outdoor temperature resulting in the system truly understanding the heat requirement. Variable speed technology on pump motors drastically reduces electrical power consumption resulting in longer motor life.

Typical CORAYVAC® Industrial Building Layout

This CORAYVAC® infrared heating system layout utilizes four burners-in-series with shared tailpipe. This system offers maximum radiant intensity heating on the left and right, with added supplemental coverage through the center, creating an even radiant heat pattern.

Symmetrical systems are preferred because the vacuum available in the system branches are balanced and damper couplings are not required. This layout and additional suggestions offered in the CORAYVAC® Design Manual have been used extensively with CORAYVAC® infrared tube heaters since 1962.

Corayvac Infrared Heating System Layout

Features and Accessories


Each burner within the system constantly regulates the air to gas mixture to produce clean, efficient combustion.

Combustion Chambers

Cast Iron, Hot-Rolled Steel, Aluminized Steel and Double Porcelain Coated Steel available.

Filter Housing

Filtered air intake for cleaner combustion air, uniquely designed and specifically engineered.

Vacuum Pumps

Draws heat through the system, maximizing system efficiency and exhausting products of combustion at low temperatures.

CORAYVAC® – Custom Designed for Specialty Fuel (SF) Vehicle Repair Garages

In specialty fuel vehicle repair facilities, it is important to comply with building codes and special requirements. CORAYVAC® SF heating systems are CSA Approved for buildings that perform repairs on CNG and LNG-Fueled Vehicles.

Replacing your old system is easy with the CORAYVAC® 4-40 Replacement Burner!

Many of the original CORAYVAC® systems such as the CORAYVAC® 4-40 systems are still in operation today!  However, after 50+ years of operation, even the best systems wear down. Replacement parts are increasingly difficult to come by, but ROBERTS GORDON® has the solution!

Designed as a true “drop-in” replacement, the CORAYVAC® 4-40 replacement burner will make your old system new again!


  • The CORAYVAC® 4-40 replacement burner comes with an industry leading 3-year warranty.
  • A direct replacement makes swapping out the old for the new quick and easy.
  • Modern CORAYVAC® B-series burner increases the efficiency and comfort of the old 4-40 system.
  • ROBERTS GORDON® provides the user flexibility by only needing to replace non-operating burners within the CORAYVAC® system. Also, if the user chooses to replace the entire CORAYVAC® system at a later date, replacement burners may be reused.

Take Your Savings to the Next Level!

With the combined strengths of CORAYVAC® and CORAYVAC® Modulating Infrared Heating
Controls, buildings can be designed for comfort without the worry of high heating bills. Investing in an energy efficient heating system is also a great way to reduce your carbon footprint.

Specification Sheet
Technical Brochure
Installation Manual
Design Manual
Features and Benefits
CRV 4-40 Replacement Manual
Revit and AutoCAD Files
Written Specification

Q:  What fuel type can I use?

A:  Natural Gas or LPG Propane.

Q:  How do I purchase CORAYVAC® continuous radiant heating systems?

A:  We sell through our independent representatives.  Find the one closest to you.

Q:  What makes CORAYVAC® a high efficiency system?

A:  CORAYVAC® utilizes more heat within the space and has lower exhaust temperatures, leading to energy and fuel savings.

Q:  What are the benefits of burners-in-series design?

A:  The burners-in-series design minimizes building exhaust penetrations, reducing heat loss. This results in energy and fuel savings, lowering the cost of heating bills.

Q:  How long does the system last?

A:  Built with durable components, CORAYVAC® provides up to 40 years of field proven performance.

Q:  What are the best applications for CORAYVAC® burners-in-series radiant heaters?

A: Any industrial facility that struggles with heat loss.  Examples include distribution centers, warehouses, and airplane hangars.

Get a Free Heat Loss Analysis or Design of Your Facility Today!

Find A Rep Near You!

Many of our independent representative partners are second and third generation firms. These infrared heating experts can help guide you through the entire buying process from design to installation.