The Knightsbridge EX1TWH Extractor Fan is a sleek, high-performance ventilation solution designed for quiet and efficient air extraction in bathrooms, toilets, and utility rooms. Featuring a clean white finish that complements any interior, this 4-inch (100mm) fan delivers powerful 24 litres per second airflow while operating at an whisper-quiet 28.5dBA. The integrated adjustable over-run timer (2-30 minutes) ensures continued operation after the room is vacated, effectively removing residual moisture and preventing condensation and mould growth. With IP45 ingress protection, double insulation, and compliance with Building Regulations Part F & Part L, the EX1TWH delivers reliable, energy-efficient performance backed by a comprehensive 3-year manufacturer warranty.

Key Features of Knightsbridge EX1TWH Extractor Fan

• Adjustable Over-Run Timer: 2-30 minute adjustable run-on timer (preset 2 minutes) for effective post-occupancy moisture removal.

• Clean White Finish: Versatile, neutral appearance suits any bathroom or utility room decor.

• Low Noise Operation: Quiet 28.5dBA at 3m for discreet, unobtrusive operation.

• Effective Extraction Rate: 24 litres per second airflow for efficient ventilation.

• 4 Inch (100mm) Diameter: Standard size suitable for wall or ceiling installation.

• IP45 Rated: Protected against water jets, suitable for bathroom zones.

• Double Insulated: No earth connection required for safe installation.

• Building Regulations Compliant: Meets Part F (ventilation) and Part L (conservation of fuel and power) requirements.

• Easy Installation: 102mm cut-out diameter for straightforward fitting.

• Low Maintenance: Reliable operation with long service life.

• 3 Year Manufacturer Warranty: Comprehensive coverage for peace of mind.

• Versatile Applications: Ideal for bathrooms, toilets, utility rooms, and kitchens.

• Modern Design: Sleek appearance blends with contemporary interiors.

Technical Specifications

Frequently Asked Questions (FAQs)

1. How does the over-run timer benefit bathroom ventilation?
The timer keeps the fan running for a set period after the light is switched off, continuing to extract steam and moisture that would otherwise condense on walls and ceilings, preventing mould growth and decoration damage.

2. What is the difference between this model and the humidistat version (EX1THWH)?
The EX1TWH features timer-only control, activating with the light switch and running on after switch-off. The EX1THWH adds automatic humidistat activation, turning on independently when humidity rises, even without the light.

3. Is this fan suitable for continuous running or intermittent use only?
This model is designed for intermittent use, typically activated by the light switch. For continuous background ventilation requirements, consider dedicated continuous-running fan models.

4. Can the timer setting be adjusted after installation?
Yes, the timer is adjustable from 2-30 minutes via an internal potentiometer. Access may require removing the fan cover, so adjustment is best done during installation but can be changed later if needed.

5. What is the recommended room size for effective ventilation with this fan?
With 24 l/s extraction rate, this fan is suitable for small to medium bathrooms and ensuites up to approximately 15-20m³. For larger spaces, additional ventilation or higher capacity units may be required.