Air extractors with temperature management: automatically controlled climate
An air extractor with temperature management is the solution to fully automate the ventilation of your grow space. These systems integrate a thermostat that starts and modulates extraction based on ambient temperature. No more heat spikes that scorch your plants or sudden drops that slow down growth.
Why choose an extractor with an integrated thermostat
Automatic regulation is what changes everything. Your extractor adapts in real-time: when the temperature rises, it accelerates to evacuate hot air. When it drops, it slows down to maintain balance. The Prima Klima 160mm Air Extractor - Integrated Thermo Controller - 800m3/h excels in this area with its precise regulation to the nearest degree. No more constant monitoring or manual adjustments needed.
These extractors also consume less energy than a system that would run continuously at full power. The EC (electronic commutation) motor of the Prima Klima Ø125mm EC TC- 680m3/h - Thermo Control Extractor can halve your electricity bill compared to a classic AC motor. And the noise level? Much more bearable when the extractor runs at low speed at night.
How to choose your thermostatic extractor
First, the flow rate: count 1.5 to 2 times the volume of your space per hour minimum. For a 1.2m x 1.2m x 2m (2.88m³) grow tent, a flow rate of 400-500m³/h is largely sufficient. The Prima Klima Temperature Controller - Diam 125mm - 400m3/h - 60W perfectly covers this type of installation with its mere 60W consumption.
The diameter also matters: 125mm for small setups, 160mm for larger spaces. Check compatibility with your ducts and carbon filter. Some models like the Thermo Controlled Extractor - DF16 - Filter compatible 150/250/350m3/h - Secret Jardin adapt to several flow rates depending on your filter, practical for evolving without changing everything.
The adjustable temperature range must meet your needs: generally 15-35°C with a hysteresis of 2-3°C to avoid untimely starts. High-end models even offer a minimum speed setting to maintain constant air renewal.
Frequently asked questions
What air flow rate (m³/h) should I choose based on the size of my grow room?
First, calculate the volume of your space (length x width x height). Then multiply by 1.5 to 2 to get the minimum hourly flow rate. For a 1m x 1m x 2m (2m³) grow tent, aim for 300-400m³/h. If you use powerful lighting (600W HPS or more), increase to 2.5-3 times the volume to effectively evacuate heat. Remember that the resistance of the carbon filter reduces the actual flow rate by 20-30%.
What is the difference between a single-flow extractor and a dual-flow extractor for my setup?
A single-flow extractor only evacuates stale air outwards; fresh air enters passively through intakes. This is the most common system in indoor growing, simple and efficient. A dual-flow system recovers heat from the outgoing air to preheat the incoming air, but it's complex and expensive for our applications. In indoor growing, a single-flow system with a thermostat is largely sufficient and costs 3 times less to install.
How to install an air extractor in my grow room without creating negative pressure problems?
Always provide a passive air intake with a surface area 1.5 to 2 times larger than the extraction outlet. If your extractor is 125mm (12cm²), your intake must be at least 150-160mm or several equivalent small openings. Place the extraction at the top (hot air) and the intake at the bottom on the opposite side to create a diagonal flow. Use backdraft dampers on the intake to prevent cold outside air from flowing back in at night.
Can an air extractor with temperature management replace my existing VMC (Controlled Mechanical Ventilation)?
No, these are two different systems with distinct objectives. Your VMC continuously evacuates humidity from the house according to regulations. The grow extractor specifically manages the air in your grow space according to plant temperature. If you set up your grow in a room with VMC, keep the two systems separate. The grow extractor should vent directly outside, not into the VMC network, which could push odors back into the house.
What regular maintenance is necessary to maintain the efficiency of my air extractor?
Clean the fan blades every 2-3 months with a dry brush to remove dust that reduces airflow. Check the airtightness of duct connections monthly; leaks reduce efficiency. Replace the carbon filter every 12-18 months depending on usage; a saturated filter strains the extractor and increases consumption. Also, check the proper functioning of the thermostat by simulating a temperature rise with a hairdryer near the sensor.
