Propane Greenhouse Heaters

Radiant infrared tube heaters are widely regarded as the best option for greenhouses. They heat objects and plants directly rather than warming ambient air, resulting in more efficient heat transfer and lower fuel costs. CSA-certified systems like the Synergy, Reflect-O-Ray, and Omega II series from Combustion Research Corporation are purpose-built for commercial greenhouse environments and support both propane and natural gas.

A standard 20 lb propane tank holds approximately 430,000 BTU of energy. Running a 30,000 BTU heater continuously, the tank would last roughly 14 hours. However, with dual-stage or modulating operation available on select Combustion Research models, the heater cycles between high and low fire, significantly extending tank runtime and reducing overall propane consumption.

Not all models require direct venting. Combustion Research Corporation's Synergy series heaters require no direct venting, reducing roof penetrations and simplifying installation. Power-vented and vacuum-fired models like the Omega II and Reflect-O-Ray series use exhaust systems to vent combustion gases safely, making them suitable for enclosed greenhouse structures where air quality is critical.

BTU requirements depend on your greenhouse's square footage, insulation quality, local climate, and desired temperature. Combustion Research Corporation offers a free heat loss calculation service to help size your system accurately. Their propane greenhouse heater range spans from 30,000 BTU for smaller structures up to 250,000 BTU for large commercial operations, with single and dual-stage configurations available.

Yes. Combustion Research heaters feature 100% safety lockout with 3-try direct spark ignition, electronic flame monitoring, and pre-purge cycles to ensure safe operation. Radiant infrared systems heat surfaces and plants directly without creating drafts or circulating air, making them ideal for sensitive environments including plant nurseries, brooders, and animal confinement facilities.

All Combustion Research Corporation propane greenhouse heaters include a 10-year warranty on radiant tubes for internally created corrosion. Select models also provide a 3-year warranty on ignition controls and electrical components. The Synergy series carries a 1-year limited manufacturer's warranty. Contact your local representative for full warranty terms applicable to your specific model.