Model:

Kair Guardian Power Pro – Powerful Centrifugal Quiet Fan for Long Duct Runs

The Kair Guardian Power Pro is a high-performance, energy-efficient centrifugal fan designed for continuous extraction in demanding applications. With a ducting capacity of up to 15 metres, this fan is ideal for long duct runs in bathrooms, kitchens, and utility rooms where axial fans fall short. Quiet, powerful, and compliant with UK Building Regulations, it offers a smart solution for domestic ventilation where airflow performance matters most.

Downloads

• Installation Instructions (PDF)
• Technical Datasheet (PDF)

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Our technical team can help you choose the right model for your project.
Email: hello@kair.co.uk | Tel: 020 8463 9695

Product Features

• Designed for duct runs up to 15 metres – ideal for through-wall or ceiling applications
• Quiet centrifugal fan – as low as 15.5 dB(A) on trickle speed
• 3-speed EC motor – fixed at install (8.8 / 13 / 28 l/s)
• Compatible with humidity sensors, pull cord, timers, and remote switches
• Ultra-low energy use with SFP down to 0.14 W/l/s
• Washable filter and low-maintenance sealed motor
• Suitable for wall or ceiling installation – gravity grilles not permitted
• 5-year warranty (1 year full, 4 years parts-only)

General Product Information

The Kair Guardian Power Pro is a compact, low-profile extractor fan engineered for continuous, energy-efficient ventilation in homes. Its centrifugal design makes it perfect for longer ducting distances where axial fans struggle, delivering high performance with minimal noise and running costs.

Energy Efficiency

Powered by an EC motor with sealed-for-life ball bearings, the Guardian Power Pro delivers up to 28 l/s airflow while consuming as little as 1.6W. Its specific fan power drops as low as 0.14 W/l/s, making it ideal for energy-conscious installations.

Health Dividend

Continuous ventilation prevents build-up of condensation and airborne pollutants. The humidity sensor option helps maintain a healthy environment by automatically increasing extraction when moisture rises, reducing the risk of black mould and improving indoor air quality.

How It Works

The fan runs continuously at a low preset trickle speed (either 8.8 or 13 l/s), boosting to 28 l/s when activated by pull cord or remote control. Versions with timers or humidistats automatically manage boost activation and overrun for convenience and energy savings.

Control

• 3-speed fan: two trickle speeds fixed via jumper, one boost speed (28 l/s)
• Boost activated via pull cord, remote switch, PIR, or humidistat
• Models available with timer (0–30 minutes adjustable) and delay-on comfort boost
• Humidity sensor range: adjustable 40–90% RH
• SELV (12V) models available for Zone 1 installations

Installation Instructions

Install on wall or ceiling using 100mm ducting. Suitable for long runs (up to 15m) but must not be used with gravity grilles or dampers. Fixed louvre or cowl terminals are recommended. Pull cord can be removed when used with a remote trigger. Ceiling installations through cold spaces require insulation and a condensation trap.

Product Specifications

Max Airflow: 28 l/s (Boost)
Trickle Speeds: 8.8 / 13 l/s
Sound Levels: 15.5 / 17.5 / 35 dB(A) @ 3m
Power Consumption: 1.6 / 2.4 / 15 W
Motor Life: 43,000 hours
IP Rating: IPX4
Duct Size: 100mm
Mounting: Wall / Ceiling

Product Maintenance

The fan features a removable front cover and washable filter. The EC motor is sealed for life and requires no lubrication. Maintenance includes occasional cleaning of the cover and filter. Always disconnect from mains before servicing.

Electrical Safety

• Double insulated – no earth required
• Complies with IEE wiring regulations
• 230V or 12V SELV options available
• Use a triple-pole isolator with 3mm separation if remote switching is used

Regulations

• Part F and Part L1A of Building Regulations
• RoHS Directive Compliant
• EMC 2014/30/UE, LVD 2006/95/CE, IEC60335-2-80
• CE / UKCA marked

Performance

Trickle 1: 8.8 l/s | 1.6W | 15.5 dB(A)
Trickle 2: 13 l/s | 2.4W | 17.5 dB(A)
Boost: 28 l/s | 15W | 35 dB(A)

Product Dimensions

Compact design with low-profile casing. See datasheet for dimension diagram. Fan fits in restricted ceiling and wall spaces using 100mm duct connections.

Performance Specifications

Designed for continuous running with pressure capability for long duct runs (up to 15m). Fan curves available in the datasheet show performance across a range of resistances. Ideal for installations requiring consistent airflow even in extended ducting routes.

WHY SPECIFY Kair™

Kair is a trusted British ventilation brand delivering innovative, high-efficiency air movement solutions. With a focus on long-term reliability, energy savings, and installer-friendly design, the Guardian Power Pro offers exceptional value and performance backed by a 5-year warranty.

Available Accessories

• Fixed louvre grilles (round or rectangular)
• External wall cowls
• PIR sensors, DRH240 humidistat, timer switches
• 100mm rigid and semi-rigid ducting
• Condensation traps, mounting kits, anti-vibration gaskets