
National Ventilation MON-S100PIR Monsoon Silence White Low Energy Low Noise Axial Extractor Fan with PIR & Timer 100mm / 4 Inch 240V
MON-S100PIR
Monsoon Silence Axial Extractor Fan with PIR & Timer – 100mm, 240V
The Monsoon Silence 100mm Extractor Fan with built-in PIR sensor and adjustable timer provides intelligent, hands-free ventilation for bathrooms and wet areas. Designed for ultra-quiet, low-energy operation, it activates automatically on room occupancy and offers reliable extraction in compliance with modern building regulations.
- PIR & Timer Control: Passive Infrared sensor detects movement to automatically activate the fan, with an adjustable timer ensuring it runs on after the space is vacated.
- Ultra-Quiet Operation: Operates at just 25 dB(A), making it one of the quietest fans on the market—ideal for residential use.
- Highly Energy Efficient: With Specific Fan Power as low as 0.27 W/L/S, the unit meets energy-saving requirements under Part L of Building Regulations.
- Zone 1 Suitable: IP45 rated when used with RCD, perfect for installation in bathrooms and shower areas where moisture protection is essential.
- Durable, High-Performance Build: Includes 40,000-hour long-life ball bearing motor, anti-vibration mounts, backdraught shutter, and thermal overload protection for consistent, safe operation.
Technical Specification
- Fan Type: Low noise axial with mix-flow impeller
- Size: 100mm (4")
- Voltage: 240V
- Control: PIR sensor with adjustable timer
- Noise Level: As low as 25 dB(A)
- Ingress Protection: IP45 (with RCD)
- Motor Life: 40,000 hours (ball bearing)
- Energy Efficiency: SFP as low as 0.27 W/L/S
- Compliance: Meets Part F & Part L of Building Regulations
✅ Upgrade to the Monsoon Silence fan with PIR for smart, silent, and efficient motion-activated ventilation—ideal for hands-free use in modern bathrooms!
C/w Humidistat | N |
C/w Pullcord | N |
S4 - Size | 100mm / 4 Inch |
Product | Domestic Fans |
Type | Domestic Axial Low Energy |
Ingress Protection | IP45 |
Voltage | 230/240 V |
C/w Pir | Y |
Air Extraction Rate M3/h | 97 M3/h |
C/w Timer | Y |
Shape | Square |
Maximum Sound Power Level | 41 dB |
Neon Indicator | N |
Max Litres Per Second Rate | 89 L/S |
C/w Backdraught Shutter | Y |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.