Prima Klima EC-THC fan 125 mm - 680 m3/h, EC motor and speed control according to temperature and humidity

Product detailed description

Prima Klima PK125EC-THC - quiet and efficient extract, 125 mm diameter and 680 m3/h

Prima Klima PK125EC-THC is a duct radial fan with an efficient ebm-papst EC motor. It handles extraction through a carbon filter and longer ducting; the impeller with backward-curved blades and the aerodynamic housing made of non-flammable polyamide (nylon) ensure quiet and durable operation. The control and connection system is integrated into the housing.

What an EC motor means

EC motor (electronically commutated, from the German manufacturer ebm-papst) is a type of motor - efficient, quiet and with smooth electronic speed control built directly into the motor. Unlike a classic AC motor, the speed is not reduced by a lossy dimmer, so the fan draws only as much energy as it really needs for the given airflow - even at lower speeds. The result is lower consumption, less noise and a longer service life. EC refers to the motor, not the way it is connected to another device.

Built-in control according to temperature and humidity

The newer -THC control generation monitors temperature and air humidity at the same time and adjusts the speed so that the climate remains within the target range - an approach close to VPD-based control. The sensor and control unit are part of the fan, so you do not need any additional device. For cultivation, this is essential: humidity determines the risk of mould and dew point just as much as temperature.

Why it pays off

Control according to temperature and humidity keeps the environment stable automatically, while the EC motor saves energy and runs quietly. You get advanced climate control in one unit, without extra cabling.

Which tent it suits and how to size it

With a maximum airflow of 680 m3/h, the fan is suitable for a 120x120 cm tent or a smaller grow room. The fan diameter, filter flange and ducting should all be the same (125 mm) - otherwise unnecessary resistance, power loss and noise will occur. A carbon filter and bends reduce the real airflow, so choose the fan with a reserve above the space requirement.

Parameters

• Manufacturer code: PK125EC-THC
• Flange: 125 mm
• Max. airflow: 680 m3/h
• Power input: 0-170 W
• Motor: EC (ebm-papst)
• Control: built-in according to temperature and humidity, T-RLH sensor
• Max. operating temperature: 50 st. C
• Power supply: 230 V, 50/60 Hz, 0.74 A
• Dimensions: 244 x 244 mm
• Weight: 2.5 kg

Suitable accessories for the fan

For odour extraction, fit the same diameter Industry carbon filter 125 mm, distribute the air with 125 mm ducting and extend the carbon's service life with the V300S pre-filter. You can mount the fan securely on the wall bracket. You can find other sizes and ranges in the Prima Klima fans category - take a look at PK100EC-THC 580 m3/h, PK150EC-THC 1100 m3/h, cheaper TC version (temperature only).

Frequently asked questions

What size tent is the fan suitable for?

The maximum airflow of 680 m3/h with a 125 mm diameter covers a 120x120 cm tent or a smaller grow room. Allow a reserve: a carbon filter and duct bends reduce the actual airflow of the setup, so choose the fan with more headroom than the tent strictly requires.

What is the difference between the -TC and -THC versions?

The -TC suffix means built-in temperature control: the fan automatically increases speed when the temperature rises above the set limit. The -THC version controls temperature and air humidity at the same time, so it keeps the climate within the target range (close to the VPD principle). For cultivation, humidity is just as important as temperature, so -THC is the more advanced option.

Do I need an external controller for the fan?

No. The control is built directly into the fan body, controls the speed itself and works without any additional device. Only owners of ECblue series models, which do not have built-in control, buy an external controller separately.

Not sure about choosing the size or assembling the ventilation system? We can advise you at info@higarden.cz or in the shop in Prague.