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Vents Quietline Ø 125 - 197 m³/h
Delivering 197 m³/h at only 13 Watts, the Vents Quietline Ø 125 offers one of the best airflow-to-power ratios available in an axial inline fan of this diameter. Noise output is held to just 32 dB(A) at three metres through precision ball bearings, rubber anti-vibration motor mounts, and integrated airflow rectifiers that convert turbulent exhaust into laminar flow. The built-in thermal overheating protection ensures safe continuous operation, while the IPX4-rated housing resists moisture exposure common in indoor growing environments. Weighing only 0.75 kg with a compact 161.5 mm body length, the Quietline 125 fits directly into any standard Ø 125 mm duct run for exhaust or supply ventilation.
Vents Quietline Ø 125 — 197 m³/h Axial Inline Fan with 32 dB(A) Noise Output
Maintaining precise environmental control in an indoor grow room requires reliable, continuous air exchange without the acoustic penalty of conventional extraction fans. The Vents Quietline 125 addresses this requirement with 197 m³/h of airflow at 32 dB(A), delivering measurably better noise performance than standard duct fans of the same diameter. Its Ø 125 mm connection makes it directly compatible with popular extraction systems including the Prima Klima Ø 125 mm range, enabling flexible multi-fan configurations.
Airflow Performance and Efficiency Metrics
The Quietline 125 achieves its 197 m³/h maximum airflow through aerodynamically optimised axial blades driven by a 13W ball bearing motor. This yields a specific power input of just 0.066 W per m³/h, placing it among the most energy-efficient inline fans in its class. Monthly energy consumption at continuous operation amounts to approximately 9.4 kWh, translating to a running cost of roughly three euros at average Belgian electricity tariffs. The ball bearing design eliminates friction-related efficiency losses associated with sleeve bearings, maintaining consistent performance throughout the motor's operational life.
Triple Noise Reduction System
Three engineering features contribute to the Quietline 125's low noise signature. The rubber anti-vibration connectors mechanically decouple the motor from the housing, preventing structural vibration transmission to the duct network. Purpose-designed airflow rectifiers at the exhaust straighten the air stream, converting turbulent vortices into smooth laminar flow. The precision ball bearings minimise rotational friction, ensuring the impeller spins smoothly without the whine characteristic of lower-quality motors. The measured result is 32 dB(A) at 3 metres, well within comfortable operating range for residential environments. Connect the fan to a Can Filters Ø 125 mm plastic flange and a matching carbon filter for integrated odour control.
- 197 m³/h airflow: primary exhaust for compact grows up to 0.5 m² or supply fan for rooms up to 2 m².
- 13W power consumption: approximately 9.4 kWh/month continuous, under 3 EUR monthly running cost.
- 32 dB(A) at 3 m: significantly below the 40-50 dB typical of standard duct fans at comparable airflow.
- 161.5 mm length, 0.75 kg weight: compact dimensions fit tight installations; bracket supports any orientation.
- IPX4 moisture protection: splash-proof rating suitable for high-humidity grow environments.
Installation Flexibility and System Scaling
The Quietline 125 fits where bulkier centrifugal extractors cannot. The included mounting bracket supports both horizontal and vertical installation. The fan operates bidirectionally: mount in the exhaust direction to extract warm, humid air, or reverse it to push fresh supply air into your grow space. For scaling to larger grow rooms, the Vents Quietline Ø 150 extends to 335 m³/h while preserving the same quiet operation philosophy. Complete your ventilation with a Can-Lite 300 carbon filter for full odour management across the entire flow range.
Order your Quietline 125 at Plant and Flower for fast delivery across Belgium.
What is the monthly power consumption of the Vents Quietline 125?
Running continuously at full speed, the Quietline 125 draws 13 Watts, consuming approximately 9.4 kWh per month. At average Belgian electricity prices around 0.30 EUR per kWh, this represents a monthly running cost of roughly 2.80 EUR. Using an external speed controller to reduce motor speed during off-peak periods will lower consumption further without compromising overall ventilation quality.
Can the Quietline 125 replace a centrifugal extractor like the Prima Klima?
The Quietline 125 offers superior noise performance but generates less static pressure than centrifugal alternatives. For short duct runs with light carbon filters and minimal back-pressure, it performs excellently. For setups with heavy filters, long duct runs, or multiple 90-degree bends, a centrifugal unit is better suited. A practical compromise is deploying the Quietline as a supply fan while retaining a centrifugal for primary exhaust duty.
What airflow remains after connecting a carbon filter?
Expect 15-25% airflow reduction when connected to a well-sized Can-Lite 300 — effective flow drops from 197 m³/h to approximately 145-170 m³/h. This remains adequate for an 80x80 cm tent. With under-sized filters (e.g., a 100 m³/h filter on this 197 m³/h fan), losses can reach 35-40%. Always specify a filter with generous headroom above fan rating; the minor cost premium delivers measurably better long-term performance.
Is the Quietline 125 compatible with standard 125 mm acoustic ducting?
Yes, standard Ø 125 mm acoustic insulated ducting connects directly to the fan flanges. Using insulated ducting further reduces perceived noise by dampening airborne sound that propagates through duct walls — a worthwhile upgrade for installations where every decibel matters, such as shared housing or bedroom-adjacent setups. The fan's bidirectional operation means identical acoustic ducting works for both the intake and exhaust sides of the installation.
