Unit Heaters & Radiant · Manufacturer
Roberts-Gordon CoRayVac & Radiant Heater Service in Phoenix, AZ
A radiant system with many burners and one vacuum pump — efficient when it is tuned, puzzling when it is not.
Roberts-Gordon has built infrared heating in Buffalo since the 1960s, and its CoRayVac system — multiple burners firing into a continuous run of radiant tube drawn by a single vacuum pump — is a distinctive approach that heats large Phoenix warehouses, hangars, manufacturing floors and vehicle-maintenance facilities efficiently. Vantage unitary tube heaters and the Gordon-Ray families serve smaller and simpler applications. Bleuwave services Roberts-Gordon equipment as an independent contractor, without dealer affiliation or factory authorization.
A CoRayVac system's burners depend on the vacuum the pump maintains through the whole tube run, and a system that has developed leaks, a weak pump or an unbalanced arrangement of burners behaves strangely — some burners fire, some do not, and the pattern changes with which burners are calling. Diagnosing it means understanding the whole system, not the one burner that will not light.
Product Families
Roberts-Gordon Equipment We Encounter
Families and designations that appear on nameplates in the Phoenix market. Capacities, refrigerants and configurations vary by model and year; we verify from the nameplate on site rather than from a catalog.
| Family | Category | What it is |
|---|---|---|
| CoRayVac | Unit Heaters & Radiant | Continuous-vacuum radiant tube heating systems with multiple burners on a common exhaust. |
| Vantage | Unit Heaters & Radiant | Unitary radiant tube heaters. |
| Gordon-Ray | Unit Heaters & Radiant | Radiant tube and infrared heater families. |
CoRayVac, Vantage and Gordon-Ray
CoRayVac systems run multiple burners in series on continuous radiant tube under reflectors, with a vacuum pump at the end of the run drawing combustion products through and exhausting them outdoors — efficient, quiet and adaptable to large floor plans. Vantage unitary heaters carry their own burner and exhaust on a single tube run. Gordon-Ray families extend the radiant line. Controls range from zone thermostats to building-automation integration.
Service in Phoenix
Idle-season failures — fouled burners, failed ignition and flame sensing, stuck gas valves — combine with system-level issues on CoRayVac: vacuum-pump wear, tube-joint leaks, pressure-switch faults and burner imbalance. Emitter tubes corrode and reflectors degrade over decades. Every service includes ignition and flame-safeguard verification, vacuum and pressure-switch testing, burner cleaning, tube and reflector inspection and gas-pressure verification; repairs cover ignition, gas valves, pumps, switches, tubes, joints, reflectors and controls; replacement and radiant conversions are evaluated where the economics favor them.
Straight Answers
Questions About Roberts-Gordon Equipment
Some burners on our CoRayVac system fire and others do not. Why?
Usually a vacuum problem — a weak pump, tube-joint leaks or a pressure-switch fault — rather than a burner problem. We test the system as a whole and correct the vacuum before touching individual burners.
Is Bleuwave a Roberts-Gordon representative?
No. We service Roberts-Gordon equipment as an independent contractor without dealer affiliation or factory authorization.
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