Active Air CO2 Replacement Regulator for Hydrofarm CO2 Syste


This product is a replacement part for the old style HF COSYS, and is not a complete unit/system.

CO2 is an odorless, invisible, and non-flammable gas. The average level of CO2 in the atmosphere is about 300 ppmv (parts per million). If the level decreases down below 200 ppmv in an enclosed growing area, plant growth slows to a halt. Through the years of testing and research, the optimum enrichment level of CO2 for plant growth has been established at 1500 ppmv. With CO2 enrichment, under good conditions, plant growth rates and flowering will increase 20-100%. CO2 can be used from seedling right through harvest.

1.9 lbs.
7.0L x 7.4W x 5.3H

Will the ACAN12 analog portable air conditioner work on an enivronmental controller?

Yes, this unit will function on an environmental controller or timer device. However, it is highly recommended that a 120V/15A power expansion device be used in conjunction to prevent the unit from tripping the circuit breaker.

My Commercial Dehumidifier diplays "FULL" and isn't dehumidifying. How can I fix this?

First, empty the reservoir. If "FULL" is still displayed, make sure the reservoir tank is inserted fully. The float switch inside the tank must engage another switch inside the unit.

How large of a grow room will this air conditioner sufficiently cool?

This air conditioner unit is recommended for use in a room no larger than a 10'L x 10'W x 8'H with a maximum of (2) 1000W AIR-COOLED lighting systems.

What is the maximum temperature my flexible ducting can safely withstand?

Our flexible ducting has an operating temperature range of -4 to 175 degrees Fahrenheit.

Why does my analog dehumidifier not seem to be working on the maximum setting?

The analog dehumidifier min-max dial directly corresponds to the amount of humidity in the room. Basically, if set closer to the MIN setting, the humidity in the room will be lower (maximum performance), and if set closer to MAX setting, the humidity in t

How do I convert LP to NG, or vice versa? Or from normal altitude to High Altitude?

Conversion parts are available separately. To convert from LP to NG (or LP to NG), you'll need a new regulator (APCGNGH or APCGLPH), and burners (sold as each, APCGEBNG, or APCGEBLP). To convert to High Altitude, just HA burners are needed (APCGEBLPH, APC

What elevations are Autopilot High Altitude model CO2 generators for?

4500 feet above sea level and above. For 0-4500 feet above seal level, use the standard models.

Why is the black solenoid on my CO2 regulator getting hot?

This is normal, the maximum operating temperature of this unit is 80C/176F. Do not touch the solenoid while the unit is operating.