Kair KMF125T 125 mm Inline Extractor Fan with Timer

The Kair KMF125T is a 125 mm inline extractor fan with a timer and two speed settings. Its listed airflow capacity is 280 Cubic Metres Per Hour, and it requires hardwiring, so installation needs to suit a fixed electrical connection and compatible ducting.

At a glance

Two-speed operation lets the installation use a low or high speed setting.
The listing gives airflow up to 280 m³/h and noise levels from 28 decibels. These are manufacturer claims, not independent measurements.
The supplied feature details specify compatible 125 mm / 5 inch plastic ducting and a maximum 5 m duct run without bends.
A timer version is listed, alongside hardwired power.

Price

£56.99Save 24%

Reference price: ~~£74.99~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Hon&Guan 125 mm Adjustable Air Vent for Interior Walls Ceiling, No drilling | 5 Inch Air Duct Diffuser, Closeable, Round, Circular, Plastic, White, Indoor Ventilation Cover for Caravans, HVAC, Bathroom

£10.99

Kair 125mm x 3m PVC Flexible Ducting Hose | For dryer vents and cooker hoods and extractor fans, Flexible ducting offers an easy solution for running ducting

£14.99

Pros and cons

Pros

Two speed settings provide a choice between lower and higher airflow.
The stated duct compatibility and maximum run give useful planning details for a straightforward duct route.
The stated two-year warranty provides a defined warranty term.

Cons

Hardwiring means this is not a plug-in fan and electrical installation must be planned accordingly.

Technical specifications

21 specifications

Identity and design
Brand	Kair
Model	KMF
Fan design	Exhaust Fan
Colour	White
Material	Plastic
Finish	Painted
Style	Industrial

Airflow and operation
Airflow capacity	280 Cubic Metres Per Hour
Speed settings	2
Noise level	28 Decibels
Wattage	23 watts
Timer control	Timer Control
Control method listed	Touch
Recommended uses	Exhausting, Ventilating
Indoor or outdoor use	Indoor

Power and installation
Power configuration	Hardwiring required
Mounting types listed	Ceiling Mount, Floor Mount, Wall Mount
Weight	1.45 Kilograms
Ducting compatibility	Compatible with 125mm / 5 inch plastic ducting
Maximum duct run	5m without bends

Warranty
Product warranty	2 year warranty.

What to know before buying

The listing describes a maximum duct run of 5 m without bends. Confirm the duct layout and installation requirements before choosing a position. Its product information also says not to expose it directly to heavy water jets in wet areas.

What’s in the box

Included

Inline fan unit
Mounting screws
Screw plugs
Installation instructions
Data sheet

Who is it for?

A good fit for

Bathroom or other indoor ventilation projects using compatible 125 mm plastic ducting.
Buyers who want a timer version and a choice of two speed settings.
Installations with a duct route no longer than the stated 5 m without bends and provision for hardwiring.

Less suited to

Buyers needing a plug-in or cordless fan.
Duct installations that exceed the stated 5 m run without bends.

Kair KMF125T 125 mm Inline Extractor Fan with Timer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 36 ratings

5 stars61%61%
4 stars20%20%
3 stars11%11%
2 stars0%0%
1 star8%8%

Customer feedback highlights quiet operation and straightforward installation, while reports about reliability are mixed, including accounts of both satisfactory operation and the fan stopping after two weeks. The stated 28-decibel noise level and hardwired design are relevant context, but do not establish those experiences for every installation. The overall rating distribution leans positive while including a smaller one-star share, so it does not resolve the reliability concern.