Vacuum Tube Heater: Complete Guide

Understand how vacuum tube heater systems work, where they perform best, and how to evaluate sizing, fuel type, construction, safety certifications, and operating cost. This guide focuses on commercial and industrial infrared heating applications, including warehouses, hangars, manufacturing plants, service bays, agricultural buildings, natatoriums, and other demanding facilities where conventional forced-air heat often wastes energy.

Vacuum radiant tube heaters in an industrial facility

Our Vacuum Tube Heater Services

Explore vacuum radiant tube options, sizing guidance, and commercial applications from Combustion Research Corporation.

Reflect-O-Ray

Reflect-O-Ray vacuum gas-fired radiant infrared systems are custom-engineered for large facilities needing efficient coverage, negative-pressure operation, and burner inputs from 40,000 to 250,000 BTU/hr.

Omega II

Omega II power-vented radiant tube heaters provide unitary, single-side-vented gas-fired infrared heating for commercial and industrial facilities where a full vacuum-engineered system is not required.

Serengeti-IR

Serengeti-IR brings patented dry tube technology to smaller commercial, agricultural, and light-industrial footprints with compact 40,000 to 60,000 BTU gas-fired radiant packages.

Sizing Guidance

CRC engineering references help facility teams evaluate BTU sizing, clearances, installation cost, operating cost, payback, utility rebates, and gas-versus-electric heating decisions.

Warehouse Heating

Warehouse radiant heating systems are engineered for tall ceilings, loading-dock door cycles, distribution centers, 3PL facilities, and large spaces where heating empty air wastes fuel.

Hangar Heating

Aircraft hangar radiant tube systems are designed for high-bay structures, oversized doors, rapid heat recovery, and floor-level comfort around aircraft, tools, and maintenance teams.

Engineer reviewing radiant tube heater plans

How to Evaluate Vacuum Tube Heaters

Define the Facility Conditions

Start by documenting square footage, ceiling height, insulation quality, door cycles, occupied zones, fuel availability, and any corrosive exposure. These details help determine whether a vacuum radiant tube system, power-vented unit, compact heater, or high-intensity infrared option fits best.

Estimate Sizing and Heat Load

Select the Right Heater Platform

Confirm Codes and Clearances

Request Engineering and Pricing

Proven Performance

Application Success

Specified across demanding commercial, industrial, agricultural, and high-bay environments throughout North America.

"Our 16-bay garage runs with doors opening constantly, so keeping students comfortable through Connecticut winters was a real challenge. Reflect-O-Ray units installed over each bay solved it. The concrete floor acts as a heat sink, absorbing and re-radiating warmth back into the space, so students feel warm at lower thermostat..."

Ella T. Grasso Technical School

"We chose a two-stage Omega II 30-ft low intensity tube system for our new two-story hospital, and it's been the right call. The 60,000–100,000 MBH output keeps our rear operating area genuinely comfortable, not just warm air blowing around. Our concrete slab absorbs and re-radiates the heat, so the space..."

Fenton River Veterinary Hospital

"Hangars are the hardest buildings to heat. High bay, minimal insulation, and a massive overhead door that dumps cold air in every time it opens. Forced air simply couldn't keep up without burning through energy. Ten 40-foot straight tubes at 150 MBH with reflectors changed that completely. Radiant heat warms..."

Tac Air – Bradley International Airport

"Heating a 120-yard indoor field under a 65-foot domed roof is not a standard job, and Reflect-O-Ray was the only system engineers felt could be tailored to it. Twelve 360,000 B/H burners firing 140-foot tubes condition the entire space efficiently. Infrared fit directly into our campus energy conservation standards and..."

University of Connecticut Athletics

"Our 16-bay garage runs with doors opening constantly, so keeping students comfortable through Connecticut winters was a real challenge. Reflect-O-Ray units installed over each bay solved it. The concrete floor acts as a heat sink, absorbing and re-radiating warmth back into the space, so students feel warm at lower thermostat..."

Ella T. Grasso Technical School

"We chose a two-stage Omega II 30-ft low intensity tube system for our new two-story hospital, and it's been the right call. The 60,000–100,000 MBH output keeps our rear operating area genuinely comfortable, not just warm air blowing around. Our concrete slab absorbs and re-radiates the heat, so the space..."

Fenton River Veterinary Hospital

"Hangars are the hardest buildings to heat. High bay, minimal insulation, and a massive overhead door that dumps cold air in every time it opens. Forced air simply couldn't keep up without burning through energy. Ten 40-foot straight tubes at 150 MBH with reflectors changed that completely. Radiant heat warms..."

Tac Air – Bradley International Airport

"Heating a 120-yard indoor field under a 65-foot domed roof is not a standard job, and Reflect-O-Ray was the only system engineers felt could be tailored to it. Twelve 360,000 B/H burners firing 140-foot tubes condition the entire space efficiently. Infrared fit directly into our campus energy conservation standards and..."

University of Connecticut Athletics

"Our 16-bay garage runs with doors opening constantly, so keeping students comfortable through Connecticut winters was a real challenge. Reflect-O-Ray units installed over each bay solved it. The concrete floor acts as a heat sink, absorbing and re-radiating warmth back into the space, so students feel warm at lower thermostat..."

Ella T. Grasso Technical School

"We chose a two-stage Omega II 30-ft low intensity tube system for our new two-story hospital, and it's been the right call. The 60,000–100,000 MBH output keeps our rear operating area genuinely comfortable, not just warm air blowing around. Our concrete slab absorbs and re-radiates the heat, so the space..."

Fenton River Veterinary Hospital

"Hangars are the hardest buildings to heat. High bay, minimal insulation, and a massive overhead door that dumps cold air in every time it opens. Forced air simply couldn't keep up without burning through energy. Ten 40-foot straight tubes at 150 MBH with reflectors changed that completely. Radiant heat warms..."

Tac Air – Bradley International Airport

"Heating a 120-yard indoor field under a 65-foot domed roof is not a standard job, and Reflect-O-Ray was the only system engineers felt could be tailored to it. Twelve 360,000 B/H burners firing 140-foot tubes condition the entire space efficiently. Infrared fit directly into our campus energy conservation standards and..."

University of Connecticut Athletics
Built to Last

Why Choose Combustion Research Corporation?

Combustion Research Corporation combines proven manufacturing, certifications, and application-focused engineering.

Experience

Over 50 years manufacturing low-intensity infrared systems for industrial and commercial facilities.

Certified

CSA International Design Certified products support safer specification and code review.

Efficient

Radiant systems reduce operational costs 30-50% compared with conventional forced-air heating.

Support

Engineering support helps match heater type, sizing, construction, fuel, and clearances.

About Combustion Research

Engineering durable infrared heating systems built for demanding facilities.

Combustion Research Corporation has manufactured low-intensity infrared heating solutions for over 50 years from its headquarters in Rochester Hills, Michigan. The company focuses on durable, energy-efficient heating systems for challenging commercial, industrial, and agricultural buildings across North America. Its product families include Reflect-O-Ray vacuum systems, Omega II power-vented radiant tube heaters, Serengeti-IR compact heaters, and Synergy high-intensity ceramic infrared heaters. CRC supports facility managers, mechanical engineers, and design-build contractors with specification guidance for new construction and retrofit projects. With CSA-certified products, MasterSpec listings, and long warranty coverage, the company’s vision is straightforward: industrial infrared heating solutions built to last.

50+ YearsManufacturing infrared heating systems for demanding facilities.
30-50% SavingsDocumented energy savings versus conventional forced-air systems.
10-Year WarrantyRadiant tube warranty for internally created corrosion.

Frequently Asked Questions

Can you leave a tubular heater on all the time?

Commercial radiant tube heaters are often designed for long operating cycles, but they should be controlled by thermostats, building management systems, or staged controls rather than simply left running without demand. Combustion Research systems include safety features such as direct spark ignition, electronic flame monitoring, pre-purge cycles, and lockout controls. Always follow the specific product manual, local codes, and your facility’s operating requirements.

What is the voltage of a vacuum tube heater?

Are tube heaters any good?

How does a vacuum radiant tube heater work?

What size vacuum tube heater do I need?

What fuel types are available for tube heaters?

What clearances are required for radiant tube heaters?

How much does a vacuum tube heater system cost?

Still Comparing Heater Options?

Get answers on sizing, clearances, fuel options, and specifications.

Certified & Specified

Awards and Recognition

CSA International Design Certified logo

CSA Design Certified

Design certification for gas-fired infrared heating equipment.

ANSI Z83.20 CSA 2.34 certification logo

ANSI Z83.20 / CSA 2.34

Recognized standard for radiant tube heaters.

MasterSpec listed certification mark

MasterSpec Listed

Specification resource for commercial construction projects.

Get Vacuum Tube Heater Guidance

Share facility square footage, ceiling height, fuel type, and application details so a representative can help with sizing, specifications, and quote next steps.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 888-852-3611. You can also send us a quick email at info@combustionresearch.com.