GAS Enviro V2 Fan Controller | Closed-Loop Climate Automation for Hydroponic Grow Rooms

Closed-Loop Climate Control for Sealed Grow Rooms

The GAS Enviro V2 is an environmental control system for growers who want the whole climate managed rather than just the fan. In a sealed or semi-sealed room, small swings in temperature and humidity add up over a crop cycle. The Enviro V2 regulates both, and automates your ventilation and auxiliary equipment from one interface, so the plant microclimate stays inside your target vapour pressure deficit range from day one to harvest.

It works with AC and EC inline fans including Systemair, and balances intake against extraction, which helps hold CO2 in a closed-loop setup instead of pulling it straight out of the room.

Key Benefits

• Closed-loop dump function. Vents excess heat and humidity automatically when your thresholds are crossed, so a spike doesn't sit on the crop until you notice it.
• Temperature and humidity control. Holds both across the full crop cycle rather than chasing temperature alone.
• Built-in fan balancer. Syncs intake and exhaust for pressure stability, which helps CO2 retention and reduces hot spots.
• Two programmable sockets. Run humidifiers, dehumidifiers, heaters or supplemental lighting from the same unit.
• Centralised control. Manage multiple devices and environmental parameters from one interface.
• LCD display. Live readings and settings at a glance.
• Plug and play setup. No complex wiring or programming required.
• High load capacity. Supports fans up to 2200W and lighting up to 1200W (2 x 600W).
• 3.8m probe. Long enough to read at canopy level rather than at the controller on the wall.
• Compact design. Space-efficient footprint for clean controller setups.

How It Works

The Enviro V2 reads temperature and humidity continuously through the 3.8m canopy probe and compares live readings against your programmed targets. When conditions drift outside your range, the controller responds on its own. It ramps fan speed up or down, triggers the dump function to vent excess heat or humidity, or switches connected equipment through the programmable sockets. The fan balancer keeps intake and exhaust in sync throughout, holding room pressure steady and limiting CO2 loss. You set the parameters and the Enviro V2 holds them.

System Features

• Control Type. Temperature and humidity, closed-loop automation.
• Dump Function. Automatic threshold-triggered venting for heat and humidity spikes.
• Fan Balancer. Integrated intake and exhaust synchronisation.
• Programmable Sockets. 2 outlets for auxiliary equipment control.
• Display. LCD interface for live monitoring and settings.
• Max Fan Load. 2200W.
• Max Light Load. 1200W (2 x 600W).
• Probe Length. 3.8m.
• Power Lead. 1.2m.
• Max Current. 13 Amp.
• Fan Compatibility. AC and EC inline fans, including Systemair.
• Setup. Plug and play, no complex wiring required.

Applications

• Closed-loop hydroponic grow room control. Automates temperature, humidity and airflow to hold VPD across the crop cycle.
• Sealed grow room ventilation management. Dump function and fan balancer keep sealed environments stable without manual adjustment.
• CO2 enriched grow room airflow. Balanced intake and extraction preserves CO2 while managing heat and humidity.
• Multi-device grow room automation. Run fans, humidifiers, dehumidifiers and heaters from one unit.
• Climate stability for indoor cultivation. Steady VPD and temperature across the full cycle.
• Advanced horticultural climate control. Suits commercial and high-performance hobby grows where environmental precision matters.

What Sets It Apart

Most fan controllers manage temperature and stop there. The Enviro V2 handles the full climate response of the room. The closed-loop dump function, integrated fan balancer and two programmable sockets mean airflow, humidity and connected equipment all respond to the same set of readings. The 3.8m canopy probe means those readings come from plant level rather than from the controller on the wall. If you're running a sealed or semi-sealed system with CO2 enrichment and VPD management as part of the plan, this is the unit that ties it together.

Compatible Ventilation

The GAS Enviro V2 works with both AC and EC inline fans. For a complete ventilation system it pairs directly with the Revolution EC Silent Inline Fan for variable speed EC control, or the Revolution AC Inline Fan for AC motor performance. Both are made by Systemair and sit within the Enviro V2 load specifications.

Technical Specifications

• Control Type. Temperature and humidity, closed-loop
• Dump Function. Automatic threshold-triggered venting
• Fan Balancer. Integrated intake and exhaust sync
• Programmable Sockets. 2 outlets
• Max Fan Load. 2200W
• Max Light Load. 1200W (2 x 600W)
• Probe Length. 3.8m
• Power Lead. 1.2m
• Max Current. 13 Amp
• Display. LCD
• Fan Compatibility. AC and EC inline fans
• Setup. Plug and play
• Product Weight. 0.5 kg
• Shipping. Free to VIC, NSW, QLD, SA and ACT

Frequently Asked Questions

What fans does the Enviro V2 work with?

Both AC and EC inline fans, including the Systemair range. The limit that matters is load, not motor type. Fans up to 2200W and lighting up to 1200W across the two sockets, with a 13 Amp maximum overall. Add up what you're plugging in before you connect it.

Can it balance my intake and exhaust fans?

Yes. The fan balancer is built in, so you don't need a separate balancer unit. Syncing the two fans is what holds room pressure steady, which is also what keeps CO2 in the room instead of being drawn straight out through the extraction side.

What does the dump function actually do?

It's a threshold override. If heat or humidity climbs past the limit you set, the controller vents hard to bring the room back down, then returns to normal operation. It's there for spikes that ordinary fan ramping won't clear fast enough, like a hot afternoon or a humidity climb after lights-off.

Does it qualify for free shipping?

Yes. At $619.95 and 0.5kg it clears the $150 threshold and sits well under the 3kg cap, so it ships free to VIC, NSW, QLD, SA and ACT. WA, NT, Tasmania and remote areas are quoted separately. Most orders to those five states arrive within 2 to 5 business days.