Cannabis Grow Room Environmental Controls Checklist
This cannabis grow room environmental controls checklist ensures proper operation of HVAC, lighting, CO2, and fertigation systems critical to plant health and product quality. OSHA 29 CFR 1910.1000 Table Z-1 establishes the CO2 permissible exposure limit of 5,000 ppm as an 8-hour TWA — calibrated sensors and functional alarms protect workers in enclosed grow environments.
- Industry: Cannabis
- Frequency: Daily
- Estimated Time: 20-30 minutes
- Role: Head Grower / Facility Technician
- Total Items: 30
- Compliance: OSHA 29 CFR 1910.1000 Table Z-1 CO2 PEL 5000ppm TWA, ASHRAE 62.1 Ventilation for Acceptable Indoor Air Quality, NFPA 1 Fire Code CO2 System Safety, State Cannabis Facility Environmental Standards, Equipment Manufacturer Calibration Requirements
Temperature and Humidity
Climate control verification.
- Room temperature within target range for growth stage?
- Relative humidity within VPD target range for current stage?
- Vapor Pressure Deficit (VPD) within 0.8-1.2 kPa for growth stage?
- Day/night temperature differential maintained (max 10F drop at lights-off)?
- Temperature and RH sensors calibrated within last 30 days?
CO2 Supplementation
CO2 system safety and targets.
- CO2 level at target (1,000-1,500 ppm during lights-on)?
- CO2 alarm set and tested — alerts at 5,000 ppm OSHA PEL?
- CO2 shutoff linked to lights-off cycle to prevent overnight accumulation?
- CO2 tank/generator fuel levels adequate for production schedule?
- CO2 sensor calibrated within manufacturer recommended interval?
Lighting Systems
Light schedule and intensity.
- Lighting schedule programmed correctly (18/6 veg, 12/12 flower)?
- PPFD/DLI at canopy within target range for growth stage?
- All fixtures operational with no burned-out bulbs or failed drivers?
- No light leaks into flower rooms during dark period?
- LED driver and ballast temperatures within safe operating range?
HVAC and Ventilation
Air handling systems.
- HVAC filters clean and within replacement schedule?
- Rooms under negative pressure to contain odors?
- Carbon filters operational and not saturated (verified by odor check at exhaust)?
- Oscillating fans providing adequate air circulation at canopy level?
- Fresh air exchange rate adequate for CO2 and humidity management?
Irrigation and Fertigation
Water and nutrient delivery.
- Irrigation water pH within 5.8-6.5 (soil) or 5.5-6.2 (hydro)?
- EC (electrical conductivity) within target for growth stage?
- All drip emitters functioning with no clogged or dry spots?
- Runoff collected and disposed of properly — not discharging to sewer without approval?
- Nutrient recipe and feeding schedule recorded for batch tracking?
Environmental Records
Data logging.
- Automated data logging recording temperature, RH, and CO2 continuously?
- Alarm history reviewed and any excursions investigated and resolved?
- HVAC, lighting, and sensor maintenance schedule current?
- Any out-of-range conditions documented with corrective action?
- Environmental Control Notes
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Why Use This Cannabis Grow Room Environmental Controls Checklist?
This cannabis grow room environmental controls checklist helps cannabis teams maintain compliance and operational excellence. Designed for head grower / facility technician professionals, this checklist covers 30 critical inspection points across 6 sections. Recommended frequency: daily.
Ensures compliance with OSHA 29 CFR 1910.1000 Table Z-1 CO2 PEL 5000ppm TWA, ASHRAE 62.1 Ventilation for Acceptable Indoor Air Quality, NFPA 1 Fire Code CO2 System Safety, State Cannabis Facility Environmental Standards, Equipment Manufacturer Calibration Requirements. Regulatory-aligned for audit readiness and inspection documentation.
Frequently Asked Questions
What does the Cannabis Grow Room Environmental Controls Checklist cover?
This checklist covers 30 inspection items across 6 sections: Temperature and Humidity, CO2 Supplementation, Lighting Systems, HVAC and Ventilation, Irrigation and Fertigation, Environmental Records. It is designed for cannabis operations and compliance.
How often should this checklist be completed?
This checklist should be completed daily. Each completion takes approximately 20-30 minutes.
Who should use this Cannabis Grow Room Environmental Controls Checklist?
This checklist is designed for Head Grower / Facility Technician professionals in the cannabis industry. It can be used for self-assessments, team audits, and regulatory compliance documentation.
Can I download this checklist as a PDF?
Yes, this checklist is available as a free PDF download. You can also use it digitally in the POPProbe mobile app for real-time data capture, photo documentation, and automatic reporting.