Oil Fired Radiant Tube Heater: Complete Guide

An oil fired radiant tube heater uses fuel oil to generate infrared heat inside a radiant tube system. Instead of primarily heating air, the system radiates energy toward floors, equipment, vehicles, and people. This makes it useful in high-bay or door-cycling facilities where warm air is easily lost, especially when natural gas or propane service is unavailable.

Combustion Research Corporation identifies the Reflect-O-Ray OIL EDS variant as the oil-fired option for off-grid and rural commercial facilities. It is suited to applications such as hangars, military facilities, warehouses, agricultural buildings, and industrial sites where fuel oil is available but natural gas service is impractical or unavailable.

Radiant tube systems heat surfaces directly rather than relying on large volumes of warmed air. In facilities with tall ceilings, loading doors, hangar doors, or leaky envelopes, forced-air heat can stratify near the roof or escape during door cycles. Infrared heat helps maintain comfort at occupied levels and can reduce operational costs by 30-50% compared with conventional heating systems.

Sizing depends on square footage, ceiling height, insulation, door-cycle frequency, fuel type, mounting height, and the comfort goals of each zone. Combustion Research Corporation references typical commercial sizing ranges and provides calculators and engineering support. Facility-specific design is especially important for high-bay buildings, hangars, warehouses, and applications with frequent heat loss.

Clearance requirements vary by model, configuration, mounting orientation, and project conditions. Combustion Research Corporation directs engineers and contractors to product submittal sheets for required clearances to combustibles. Typical radiant tube clearances can vary significantly, so designs should be reviewed with the authority having jurisdiction and coordinated with the final system layout.

Combustion Research Corporation quotes systems by facility square footage, ceiling height, BTU sizing, fuel type, and construction material. Costs also depend on fuel piping, electrical drops, vent terminations, and whether the project is new construction or retrofit. Quotes are available through a North American representative or by calling customer service at 888-852-3611.

Applicable warranty information depends on the selected system, but Combustion Research Corporation lists a 10-year radiant tube warranty for internally created corrosion on Reflect-O-Ray, Omega II, and Serengeti-IR systems, plus a 3-year burner control warranty. Warranty coverage should be confirmed during specification for the exact oil-fired configuration and project requirements.

Oil-fired radiant tube heaters can be used in commercial, industrial, agricultural, and certain off-grid facilities, but they must be engineered for the building. Important factors include combustion air, venting, fuel availability, service access, clearances, local code review, and the intended heating pattern. Combustion Research Corporation supports specification with submittals, certifications, and engineering data.