SmartAir BOOST Radiator Fan - 2 Rooms

£69.99
RRP £119.98
SAVE 42%
SmartAir BOOST Radiator Fan - 2 Rooms is rated 4.3 out of 5 by 220.
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Give your heating a boost for less than 1p* per hour! Feel warmer quicker with the original, energy saving SmartAir BOOST. The patent-pending, portable, heat circulator that re-directs the heat from your radiator into the room where you are, rather than into the walls or out the window!

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Purchase our Extended Warranty, which covers your SmartAir BOOST for an additional 2 years beyond the 2-year free exclusive warranty for £6.99

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The SmartAir BOOST is the original. 

Give your heating a boost and save money year after year! Feel warmer quicker with the original, energy-saving SmartAir BOOST. The patent-pending, portable, heat circulator that re-directs the heat from your radiator into the room where you are, rather than into the walls or out the window!

It’s the patent-pending, compact, and portable multi-fan heat circulator designed to reduce energy wastage and save you money. This energy-efficient system improves the circulation of warm air, heating your living space faster and more efficiently. 

SmartAir BOOST is designed to improve heat circulation to speed up room warm-up times so your thermostat switches your heating off quicker, saving you money.  

  • Cut your heating bills: circulate heat at living height, not ceiling height so your thermostat switches off quicker and saves you money.
  • Save money year after year.
  • Redirect warm air from your radiators: rather than letting all your heat rise to slowly heat your room from the ceiling down, SmartAir Boost redirects rising heat from the radiator and accelerates it forward, boosting and improving the heat distribution more effectively.  
  • Patent-pending engineered design: four energy-efficient, axiel fans drive your radiator’s heat through sealed air-conducting funnels into your room where you want and need it. 
  • Use either Manual mode for control or Automatic mode for maximum efficiency: easily change between the two modes with the flip of a switch. 
  • Intelligent heat sensor ensures you’re only driving warm air into your room: in Automatic mode when your radiator’s surface heats to 33°C SmartAir BOOST will spring into action, redirecting warm air into your room. When your radiator cools down to under 33°C the Boost will turn off so it’s never driving cold air into your room.
  • Costs less than a penny to run for an hour: SmartAir BOOST is so efficient it costs less than half a penny an hour to run.*
  • Use either corded or cordless for complete versatility: you can run directly SmartAir BOOST off mains power or charge the built-in power bank for up to fourteen continuous hours of use.
  • Helps dry your clothes faster by directing warm air right onto your clothes airer.
  • No installation is required: simply place it on your radiator, no need for a plumber or electrician.
  • Features intelligent auto-shut-off safety system: if your radiator gets too hot and reaches 70°C then SmartAir Boost will turn itself off until your radiator cools to 65°C. 
  • Over 5,000 sold!  
  • Lightweight and portable: take SmartAir BOOST with you from your home office in the day to the living room in the evening to your bedroom at night.
  • Discreet, modern design: fits into any room.
  • Engineered to be 41cm long to efficiently heat your whole room fast: SmartAir BOOST allows some heat to rise to heat the room from the top down while keeping the warm air it pushes into your room where you want it: around you and your family.  
  • You're in control: choose between high and low fan speeds, charge it while on the radiator or keep it cordless, go manual or automatic. The choice is yours. 
  • Fits virtually any radiator including:
    • Double Convector 
    • Tubular Double
    • Tubular Single
    • Cast Iron Style
  • Thanks to the included Stability Feet it even works on Single Convector radiators.
  • Easy-read LED digital display: tells you which fan speed you are using, High or Low, then cycles to the percentage battery life remaining and then to the surface temperature of your radiator.

Product Details:

  • Weight: 1.6kg
  • Dimensions: W 41cm x H 11.5cm x D 10.5cm
  • Wattage: 10W
  • Voltage: 5V
  • Cable length: 1.8m
  • Charge Time: 4.5 hours
  • Run Time:
    • Low: up to 14 hours
    • High: 8.5 hours
  • Volume when in use:
    • High Setting: 48.6dB
    • Low Setting: 45.7dB

*calculated using Ofgem UK price cap per kWh as of October 2022. 

This product is covered by our 30-day Money Back Guarantee (Terms & Conditions Apply). 

Rated 4 out of 5 by Milodog# from Smart Air Boost Smart Air Boost radiator fan, Great bit of kit does what it says on the tin blows the heat around making the room hotter quicker so saves money, Only one thing it’s a little noisy that’s the reason for 4 Stars.
Date published: 2025-03-08
Rated 5 out of 5 by Robin C from Brilliant product. This product is everything that they say it is. Nearly nothing to run, and saves me money as it keeps on blowing lovely warm air round the room long after the radiator has stopped. Saving me lots of heating oil. The cost is reasonable and soon recouped. Brilliant product.
Date published: 2025-03-05
Rated 1 out of 5 by Anonymous from Smart air boost Maybe thay work in a tiny room with a low ceiling i bought two and the charge runs down fast and not much warmer I expected a lot more and I had two on in one room not impressed thearie is good practical not good its a no from me
Date published: 2025-02-27
Rated 4 out of 5 by n/ap from warmer rooms these are great help warm up the room and keep it nice and toasty
Date published: 2025-02-15
Rated 3 out of 5 by Tezza1234567890 from Okay They appear to work as stated but the fit/fitting on the radiator needs to be radically improved. Could do with a lght saying when power pack is charged. Only time will tell if it improves things in our bungalow?
Date published: 2025-02-09
Rated 5 out of 5 by Chally from Excellent For Heating Rooms Quickly I originally bought the small smart Air Boost for my bathroom radiator. I live in a very old gatehouse that’s hard to keep warm, especially the bathroom. The difference in heat was noticeable and significant as soon as I opened the door in the morning. It’s quiet and very effective. I was so impressed that I’ve bought two XL models for the living room radiators and again the time to heat up the room is greatly reduced and it stays warmer for longer. I run them all using the mains connection (socket outside bathroom) and would highly recommend them as I’ve tried so many different products, this has come out on top.
Date published: 2025-02-06
Rated 5 out of 5 by David536 from Love it. Just love it. Keeps my room toasty warm. The room warms up much quicker than without it.
Date published: 2025-01-20
Rated 5 out of 5 by Thomas Flood from warm loungers. excellent product made such a difference in our lounge no cold spots anymore cosy and warm now so pleased I purchased the smart air boost xl have recommended it to family and friends.
Date published: 2025-01-17
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  • 2 Year Exclusive Warranty 
  • 2 x SmartAir BOOST Radiator Fan 
  • 2 x Charger 
  • 4 x SmartAir BOOST Stabiliser Feet