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Radiator Booster

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0333 400 9500

Quoting product code: N82NL


About this product


  • Heats your room faster - saving energy and reducing your heating bills
  • Running costs of around 30 p per year
  • This is the Mark3 latest version

Product overview

• Heats your room faster - saving energy and reducing your heating bills
• Running costs of around 30 p per year
• This is the Mark3 latest version
• Works with any conventional water filled radiator
• Sucks warm air from behind the radiator and fires it into your room
• Reduces heat loss through your walls
• Heats your room quicker - central heating shuts down sooner
• Sits either on top of or behind your radiator
• Supplied with a 1.9 m mains power lead

The Radiator Booster is manufactured from rigid, recyclable plastic and blends easily into any room. At its heart is an efficient fan to gently move the warm air
around the room, which mixes the entire air in an average room every 90 minutes. With intelligent electronics, the Radiator Booster only circulates the air when the radiator exceeds 30 degrees Celsius, so ensuring no energy is ever wasted.
When the Radiator Booster technology was independently tested by Which Magazine (April 2011), they concluded the following:
"Our test lab found that with the radiator booster fitted, the room heated up more quickly, the thermostat needed to come on less often and energy consumption dropped"Please note that the Radiator Booster is not designed to work with oil filled, electric storage or electric convection radiators, it is designed for use with standard domestic water filled radiators as part of a central heating system. The Radiator Booster should not be used in shower rooms, bathrooms or other areas exposed to damp or humidity.

Rated 4 out of 5 by from It's good, but it's not Carling! It works! Mind you, it depends what you want it for. I can't believe that it saves you money unless it is placed in the same room as the system thermostat, then it might. What it IS good for is ensuring a room, or a hall way in our case, is thoroughly warmed from a poorly placed radiator. Previous comments on the small size of the fan and the quality of the materials used are justly made considering the advertised price. Far too expensive, however it does the job and has noticably warmed up our hall way. I am considering purchasing another for our conservatory, but only if the price comes down significantly
Date published: 2015-01-11
Rated 5 out of 5 by from Brilliant bit of kit I bought one of these a few weeks ago and installed it in the living room. This is a north facing room with a full width and somewhat elderly double glazed window, and has always needed an additional blast from an electric fire as well as the water filled radiator to bring the temperature to a comfortable level. With the radiator booster sat on top of the rad, the room is now nice and warm without the electric fire on. A simple and clever enhancement of the radiator technology.
Date published: 2014-12-24
Rated 5 out of 5 by from Why it so good I have 2 radiator boosters, had one of the early models which is still running well. Definitely heats up the room quicker and feels warmer all over. The cost to run is about 50p per year so effectively nothing. I think people need to understand that this is NOT a fan heater but a way to mix the cold spots in a rom with the warm air from the radiator giving a warmer all over feel . Its not the prettiest product but definitely effective.
Date published: 2014-11-12
Rated 3 out of 5 by from Good points Bad points I have two of these and have had for a couple of years now. They are not cheap for what they do, however they do help circulate the air if a radiator is in a position that some heat is lost. They one thing that lets them down is they are quite noisy. I am unsure if they can be quietened or not, but the constant noise is quite irritating.
Date published: 2014-02-20
Rated 5 out of 5 by from Why I like it. I did not buy this to save money but because it said the air is distributed better. My lounge is 18 by 18 and one wall is 6 bifold doors. I didn't consider that the glass would be cold. Subsequently I had a room which was much warmer one side than the other. My radiator is also towards the corner of the room rather than the centre of a wall. I was sceptical about this fan but thought I would give it a go. I was pleasantly surprised. My room is now equally warm on all sides and warms up quicker. It may be a small unit but it is very efficient I bought another for a room which is a room with stairs in that was cold where the stairs are. Again the little fan has circulated the air so that it is equally warm all round. You can hear the fan running but I wouldn't expect any fan to be silent and it is not too intrusive I find I tend to notice when it goes off rather than when it is running. If I had more plugs nearer my rads I would buy more but I don't and that is the only downside I can see to this. I have mine on double radiators so could not say if it would be as efficient on a single radiator.
Date published: 2014-12-24
Rated 5 out of 5 by from radiator booster Circulates warm air all around room, our rad is at far end of room was thinking of installing extra rad at other end - no need now!
Date published: 2013-12-30
Rated 5 out of 5 by from Understand how it works Enough to make a cat laugh ! Some users of this product have a very poor understanding of how radiators work and accordingly can't get a grip on the radiator fan usage.Because a poster thinks he can make his own up for far less than they are sold at doesn't denigrate how the product works, if they can make their own I'd encourage them to do so. The description of this product is correct, a small (ish) plasticated tube with slots in the bottom which has a telescopic smaller tube which pushes inside it (on earlier models) which allows a degree of tailoring to the radiator size ( 14" up to 26" approx). It has a small computer sized fan in the end. It doesn't matter if it's on a larger radiator it still works to good effect, and the effect is ...increased and better convection behind the radiator. The small computer sized fan in the end works on milliamps which is good for low cost running (it's that reasonable less than £10 a year for me), but bearing in mind it's only 60mm dia the volume moved is like a hamster wheezing ! but hears the doesn't need to be any more volume ! The increased flow from behind the radiator increases and encourages the natural convection greatly, and the reason it helps your bills come down is that because the room temperatures goes up more quickly with the increased flow, the thermostat for the central heating reaches it's operating range quicker and maintains the temperature easier using less power. Fan equipped radiators work in the same manner but cost loads more to buy than this, and their fans are much more costly to run. On the radiator booster once the in fan thermostat has tripped at about 30 deg to turn them on the fan will continue pushing out the hotter air from behind or within (if a two panel radiator) a radiator even if the central heating turns off until it stabilises at room temp. It's not pushing out cold air, it's moving air that may only be slightly warmer than the room temperature, that's how convection works and would happen even if the fan was not working. The noise level from the small fan in use is about the same as a computer fan (no surprise there, it is one !) but the Rad fan case may need moving or "tailoring" with self adhesive draught excluder foam to prevent it vibrating against the rad, not as big a deal as some posters make. If the fan gets noisy in use clean the fan blades with a cotton bud, sometimes the dust build up on them causes it to resonate, in my book normal maintenance. In use they allow rooms which have natural convection problems to achieve and maintain a warmer environment at less cost and they impressed me enough to buy three of them which are still in use and so far have lasted 5 years with no problems. Oh...and as a final comment Which magazine ( a neutral non biased professional consumer organisation) who have a substantial research budget set up to examine products describe it as one of the few products which work to enhance room heating at reduced cost. Now who would you like to believe, them or badly opinionated members of the public ?
Date published: 2015-11-30
Rated 1 out of 5 by from Don't waste your money Bought to help heat conservatory with idea of blowing warm air from radiator around the room to help get rid of the ambient coldness you get in winter from windows. Very disappointed - arrived in old packaging that had been torn at the end, the plastic end caps on the preformed plastic shell were a light pink as opposed to white like the main unit, and as per other reviews the fan at one end of the unit is not even as strong as a PC fan. Even at the sale price of £20 this is over priced junk. It made no difference at all, blowing heat about 3" away from the unit at one end only.
Date published: 2015-12-03
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Length 610 mm
Width 60 mm
Depth 60 mm
Weight 240 g

1)How noisy is the fan? Can u explain in decibels plz or in a way to get some idea on the noise levels?. 2) Does this one size fit all work effectively in radiators with longer length (1200 mm) 3) what’s the return policy for peace of mind? Thanks

Asked by: Karl
This service is for frequently asked questions and does not allow two way communication, In order for us to best assist you with your technical issue please contact us on the details below: 0333 400 9500 or email
Answered by: Billy
Date published: 2017-11-21

How does it attach to a radiator?

Asked by: Alkemist
This would depend on the type of radiator you have. For single panel convector radiators or double panel double convector radiators, you would place the booster on the fins. For double panel and double panel single convector radiators you would place the booster on the two panels themselves or on any guard which secures those together.
Answered by: Gareth
Date published: 2017-10-12

What are the dimensions of the radiator booster?

Asked by: Hart
Dimensions: 610(l) x 60(w) x 60(d) mm
Answered by: darren cordon
Date published: 2017-03-29

Does the radiator booster fit on radiator with no flat top

Asked by: jimbob
Unfortunately we are unable to guarantee full compatibility for this item in your intended application I am sorry for any inconvenience this may cause you.
Answered by: Darren
Date published: 2016-12-04

I have a single radiator to which I'd like to attach a fan blower (Radfan)to distribute the heat off the radiator more effectively. But, models illustrated only show double radiators. Is there one made suitable for a single radiator? Thanks

Asked by: Allan
Unfortunately we are unable to comment on items we don't stock, but I can confirm our model would be suitable as it is designed to fit either on the top of the double panel style or on the fins behind a single panel style radiator.
Answered by: Gareth
Date published: 2016-12-02

what is the height of the unit

Asked by: jg2866
Dimensions: 610(l) x 60(w) x 60(d) mm
Answered by: Dominic
Date published: 2016-05-03

Where can I purchase a new plug/transformer for this radiator booster?

Asked by: Brian
On this occasion Maplin do not stock a product that exactly meets your requirements, or indeed anything close enough to offer you as an alternative.
Answered by: Dominic
Date published: 2016-02-29

Can l purchase a mains adaptor plug separately as my unit works fine but the adaptor is not working?

Asked by: DaveMac
Unfortunately we do not sell the adapter separately.
Answered by: Billy
Date published: 2017-11-30
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