HotBox

HotBox has been a trusted name for indoor horticultural climate control since 1976 — earning a strong reputation over the years for their smart, durable tools that support serious plant growth. With close to 50 years of experience, they specialize in developing reliable equipment that helps growers master their environments — from precise CO2 supplementation to consistent heat distribution and pest control. Whether you’re running a commercial greenhouse or a well-dialed homegrow, HotBox products are built to meet the high standards of today’s cultivators. Their lineup includes CO2 generators, ventilation fans, sulfur vaporizers, and propagation heating systems, each engineered for efficient, long-term use. Their products are designed to thrive in cultivation environments where temperature swings, high humidity, and round-the-clock operation are the norm. Used by people in over 40 countries, indoor cannabis growers keep going back to HotBox thanks to their product quality and unparalleled customer support system — including spare parts, repair services, and responsive customer service. The CO2 Generator 11kW is a commercial-grade CO2 generator designed to enrich large-scale grow rooms with consistent, clean-burning CO2. Growers with smaller setups find the CO2 Generator 2.5kW offers the same reliable functionality in a compact, efficient unit that’s perfect for tents or mid-size grow rooms.