Prima Klima 400 m³/h Temperature Controlled

The Prima Klima 400 m³/h Temperature Controlled extractor automatically adjusts extraction speed based on real-time temperature readings from a built-in sensor. Set your target temperature between 20 and 30°C using the dial on the housing — the motor ramps up as heat increases and scales back as it drops, all the way down to standstill if conditions allow. No external controller, no timer, no manual intervention. Continuous variable speed from zero to 400 m³/h through a Ø 125 mm flange at just 60 Watts. ebm-papst centrifugal motor, sealed ball bearings, flame-retardant polyamide housing. Available at plantandflower.be.

2 Year Warranty 30 days retour

Prima Klima 400 m³/h Temperature Controlled – automated extraction that responds to your grow room in real time

Manual climate management works until it does not. A fixed-speed extractor runs at full power whether the tent needs it or not. A 2-speed model improves on that with two presets, but still requires the grower to choose the right one. The Prima Klima 400 m³/h Temperature Controlled takes extraction management a step further: a built-in temperature sensor continuously measures ambient air and adjusts motor speed proportionally — from standstill to full 400 m³/h — without any human input. The result is a grow room that maintains its target temperature automatically through light cycles, weather changes, and seasonal shifts. For manual control alternatives, the Prima Klima 1-speed 360 m³/h accepts external controllers, while the 2 Speed 220-360 m³/h offers two fixed presets via an integrated switch.

How the integrated thermostat operates

A rotary dial on the housing sets the target temperature within a 20-30°C range. The built-in sensor measures air temperature at the fan's location. When the reading exceeds the setpoint, the motor speeds up progressively to increase extraction and lower the temperature. When it drops below, the motor slows down proportionally. This creates a continuous feedback loop where extraction intensity tracks actual thermal demand rather than running at a fixed output regardless of conditions. The variable speed operation means the fan only consumes the energy it needs at any given moment — during cooler periods or dark cycles, power consumption drops substantially below the 60W maximum rating.

Sensor placement: the key to accurate regulation

The thermostat's effectiveness depends entirely on where the sensor reads temperature. The PK125-TC should be mounted in the extraction line above the canopy, where the warmest air in the tent accumulates naturally. Placing it next to a lamp creates artificially high readings that force the motor to run faster than necessary. Placing it in a dead corner with poor airflow produces readings that do not reflect the actual growing environment. The optimal position is in the exhaust path, after the canopy but before the carbon filter, where airflow is consistent and temperature readings represent the true heat load of the space. Pair the extractor with a Can-Lite 425 carbon filter for odour control and connect with Sono-Connect 127 mm insulated ducting to minimise noise throughout the variable speed range.

Comparing the three Ø 125 mm Prima Klima models

The Prima Klima Ø 125 mm range offers three distinct control philosophies in the same physical format. The 1-speed at 360 m³/h runs at a constant rate and accepts external speed controllers for manual or automated adjustment. The 2 Speed at 220-360 m³/h provides two fixed airflow presets switched by an integrated toggle — effective but limited to two output levels. This thermostat model at 400 m³/h delivers continuous variable speed driven by real-time temperature data, combining the highest peak output in the 125 mm range with the most hands-off operation. The 400 m³/h ceiling also provides a useful margin over the 360 m³/h 1-speed, compensating for carbon filter pressure loss while still maintaining extraction capacity on the hottest days.

Order the Prima Klima 400 m³/h Temperature Controlled from plantandflower.be with fast shipping across Belgium. Set the dial, install the fan, and let temperature drive your extraction.

How do I set the target temperature on the PK125-TC?

A rotary dial on the housing allows you to set the target temperature between 20 and 30°C. The motor then adjusts its speed automatically based on the measured temperature. No external controller or additional equipment is needed.

Does the fan stop completely when the temperature is low enough?

The motor can ramp down to standstill when the temperature remains well below the setpoint. In practice, maintaining some minimum airflow is advisable to prevent humidity buildup and condensation. Placement and setpoint configuration determine whether the motor reaches full stop or maintains a low idle speed.

Is the PK125-TC quieter than a fixed-speed extractor?

In temperature-controlled operation, the fan only reaches maximum speed when thermal conditions demand it. Most of the time it runs at an intermediate speed matched to the actual heat load. The average perceived noise level is therefore lower than a fixed-speed model running continuously at full output.

What is the advantage of 400 m³/h over the 360 m³/h 1-speed model?

The additional 40 m³/h provides a buffer that compensates for the pressure drop caused by a carbon filter and ducting. Where the 360 m³/h 1-speed model may deliver around 250-270 m³/h effective throughput after filter losses, the 400 m³/h thermostat model maintains a higher effective ceiling. This extra headroom matters most during peak heat periods when the thermostat pushes the fan to maximum.