Autopilot CO2 Generator, 4 Burner, LP

Enrich Your Grow Room With Carbon Dioxide From a 4-Burner Propane Generator

Elevated atmospheric CO2 is one of the most direct inputs that affects plant growth rate. Most indoor growing environments run CO2 levels well below what plants can actually use — typically around 400 ppm ambient — while plants can continue to respond positively to CO2 concentrations up to 1,200–1,500 ppm under sufficient light.

Autopilot CO2 generators produce carbon dioxide through the combustion of liquid propane, providing a continuous and adjustable source of CO2 enrichment that scales with the size of the growing space. The 4-burner Propane model connects to a standard propane tank via a regulator hose and is matched to the CO2 demand of rooms from small to commercial scale.

Built with powder-coat finish for durability and pilot-ignition burners for reliable lighting, Autopilot generators are designed for continuous operation in grow room environments at low daily fuel cost.

Key Features & Benefits

• 4 pilot-ignition burners — each burner combusts liquid propane to produce CO2, with the 4-burner count matched to the enrichment demand of the target room size.
• Powder-coat steel finish — provides corrosion resistance and durability for continuous operation in humid grow room environments.
• Propane fuel source — runs on liquid propane and connects to a standard propane tank via a regulator hose — confirm gas type matches the available supply before purchasing.
• Operates at low daily fuel cost — combustion-based CO2 generation runs efficiently, with fuel cost typically in the pennies-per-day range for standard enrichment schedules.
• Compatible with CO2 controllers — pair with the Autopilot APC8200, APC8400, or similar CO2 controller to automate enrichment and maintain a precise setpoint.
• Replacement parts available — replacement burners, regulator hoses, power adapters, and brass plugs are available separately for maintenance and long-term serviceability.

Who Should Use the Autopilot 4-Burner Propane CO2 Generator

Indoor growers with liquid propane supply who want to enrich grow room CO2 levels with a combustion-based generator — using the 4-burner model sized to the enrichment demand of their space, paired with an Autopilot CO2 controller to automate the setpoint.

Pairing the CO2 Generator With a Controller

The Autopilot CO2 generator does not include a built-in controller. Pair it with the APC8200 CO2 Monitor and Controller (with remote probe) or the APC8400 Digital CO2 Controller (integrated sensor) to automate enrichment and maintain a precise CO2 setpoint. The generator connects to the controller's switched outlet.

Frequently Asked Questions

What room size does the 4-burner model suit?

Room size depends on air exchange rate and target CO2 setpoint, not just square footage. As a general guide, the 4-burner model is appropriate for rooms up to approximately 1,000 square feet at standard ceiling height with moderate air exchange.

Does this generator include a CO2 controller?

No — the CO2 generator produces CO2 but does not include a built-in controller or sensor. An Autopilot APC8200 or APC8400 controller is required to automate enrichment and maintain a CO2 setpoint.

Is a regulator hose included with the generator?

Yes — the generator includes a regulator hose for connection to the liquid propane supply. A replacement 12-foot regulator hose is available separately (APCGLPH for LP, APCGNGH for NG).

Can I use this generator at high altitude?

Standard Autopilot CO2 generators are rated for standard altitude operation. For installations above approximately 4,500 feet elevation, use the high-altitude replacement burners (APCGEBLPH for LP, APCGEBNGH for NG) which are calibrated for reduced atmospheric pressure.