Speed Comfort Smart Radiator Fan (Extension Set)

  • Extends existing SpeedComfort sets to suit larger radiators
  • The extension set includes 1 x fan and 1 x connector cable
  • Requires existing mono, duo or trio set to function

£49.94 inc VAT

EAN / Barcode: 8719324414678


Any Questions?

Our technical team is on hand to solve any problems or help you find the ideal solution.


  • Set your thermostat 1-2 degrees lower without sacrificing comfort to get your room to the proper temperature in half the time.
  • Heat is transferred from a radiator or convector into a room faster and more evenly with SpeedComforts.
  • SpeedComforts allows you to lower the water supply temperature in your heating system.
  • Thanks to SpeedComfort, you can save up to 22% on gas consumption.
  • The power supply is lossless, which means that when the SpeedComfort isn't active, you won't waste any energy.
  • The fans are incredibly cost-effective. A SpeedComfort uses less than an estimated £0.13 in electricity per year based on 1,000 running hours*.

* based on Speed Comforts estimations.

All Speed Comfort sets come with adjustable brackets and feet, no extra accessories needed.

For most radiators and convectors

Standard Radiators

Most radiators have two or three panels (type 22 or 33) with a gap of more than 7 cm. The SpeedComfort can be fitted at the bottom of the radiator in the gap between the panels. The magnetic slides will automatically find the iron panels.

Narrow(er) radiators

If you have radiators with less than 7 cm of space between the panels, pull the magnetic slides out of the housing and put them back in place with the magnet facing upwards. The blocks opposite the magnetic slides now only have a cosmetic function and can be removed. The SpeedComfort will now hang tightly under the radiator.

Single radiators

If you have a radiator with one panel, pull the magnet slides out of the housing and put them back in place with the magnets facing upwards on one side. With the magnets against the back of the radiator, the SpeedComfort hangs tightly underneath.

Convector of convector ducting

If you have a convector or convector ducting, you will find four feet at the bottom of the housing. Place the feet in the specially-made holes, with the foot in the longitudinal direction. You can place the SpeedComfort both on top of the convector block and below.

Different situations

If you have old-fashioned louvre radiators, you can hang SpeedComforts underneath with wires or tie wraps. You can also use the feet to put them on the ground underneath the radiator – it’s not fancy, but it works… And if there’s not enough room for SpeedComforts at the bottom of your radiators, you can also place them on top. Many radiators have a grille, under which they are hardly noticeable.

How do SpeedComforts work?

Automatic operation

SpeedComforts have an external thermostat switch.  This is placed near the hot water supply using magnets. When the radiator or convector gets to 33 degrees close to the thermostat switch, the fans will turn on automatically. As a result, the radiator/convector moves heat more quickly from the radiator into the room. The room is brought to the desired temperature more quickly, and the heat is also better distributed.
The heat from the radiators/convectors is also distributed around the room for a much longer time. SpeedComforts only stop when the temperature of the radiator/convector falls below 25 degrees.


A lossless adapter is included as standard.

Complete packages

SpeedComforts are supplied complete, including adapter, thermostat switch and connection cables (30 cm)

How many do you need?

Rule of thumb for the number of SpeedComforts to be used

One SpeedComfort moves approximately 30 m3 of air per hour. The air in a room should preferably circulate once per hour.
Calculation example: a living room measuring 5 metres wide, 8 metres long and 3 metres high has a capacity of 120 m3. In this case, a Trio set with an Extension set, or two Duo sets are required.
In a bedroom, one SpeedComfort (a Monoset) will usually be more than enough.

Particular circumstances

Radiators often have a hard time heating a room. Maybe there is a sofa in front of it, a wide windowsill above it, or it is hidden behind a decorative casing. In these cases, SpeedComforts provide extra help because, despite these obstructions, they push the warm air into the room.

Linking multiple SpeedComforts

Keep in mind that you need an average length of 50 cm for each SpeedComfort. Therefore, on a radiator/convector of 1.60 m, you can accommodate three.  You can connect up to 20 SpeedComforts, using one adapter. Expansion sets are available, in addition to complete packages. These always include a 30-cm connection cable.

Box Contents:

  • 1 x SpeedComfort
  • 1 x Connector Cable 30cm (12in)

Please Note: There is NO 12V Adapter or Thermosensor included in this set. Requires existing mono, duo or trio set to function.

SpeedComfort Dimensions: 

34 x 7 x 2.5cm (13.4 x 2.75 x 1in)

Cable Length from 12V Adapter to SpeedComfort: 

30cm (11.8in)

Product Specifications

Physical and Performance Attributes

Weight500 grams