SmartAir BOOST Radiator Fan

€49.99
RRP €68.99
SAVE 28%
SmartAir BOOST Radiator Fan is rated 4.1 out of 5 by 829.
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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!

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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 €9.99

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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.
  • 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 5 out of 5 by Tony56 from Was a great buy UNTIL… Can anyone help? I have 2 of these went away for 2 weeks and turned them off. When back turned them on with my heating and there is no display and both not working ? Question is there a reset button or are they broken. Please help!
Date published: 2025-03-17
Rated 1 out of 5 by Ken Mac from Not really a practical solution On reflection this product was pretty basic by transferring heat from the radiator through small fans (which do make a noise) into the room. Whilst it looks okay on the advert the appearance is not great and along with the cable not a great look to your room. Despite returning it for some reason it’s not arrived and hence I’ve not been refunded. Hopefully I will receive my refund soon enough as I had to pay to return the product using their chosen courier.
Date published: 2025-03-09
Rated 3 out of 5 by SilverFox1949 from OK but not brilliant. OK but not brilliant. Boost cold air on my electric heater until radiator is hot, then fan shuts down - possibly because it overheats. Ineffective in my garden room.
Date published: 2025-03-02
Rated 2 out of 5 by Abbb from Too loud This is a disappointment simply based on how noisy it is. It's on a radiator about 3 meters away from where I sit to watch TV and it has to be turned off. Additionally the battery is pointless as it's plugged in all the time so there's obviously extra expense providing something that isn't useful. The lead itself is too short as well. Lastly it comes on at about 35 degrees which isn't really warm enough to make any difference. All in all poorly executed. I've got some of the under radiator units and they are a lot better
Date published: 2025-02-27
Rated 3 out of 5 by Rweb from Could be better Bought the Radiator fan as I saw it advertised and looked very good... Its well made being metal & works OK, but its Very Noisy... It's a pity you can't set the temperature on the unit, when you want it to cut off or on...
Date published: 2025-02-27
Rated 5 out of 5 by Demoman from Recommend 1st class service can highly recommend it throughout
Date published: 2025-02-25
Rated 5 out of 5 by Eddie D from Excellent product The Smartair radiator boosters are an excellent product. I have purchased the small and larger versions and i can honestly say, they're worth the money. I have since purchased 2 more for a friend who was impressed when they felt the difference in temperature in my apartment. The Smartair radiator boosters really do heat up the rooms quickly, and I also like the thermostat function on them as they turn on and off, when the radiators turn on and off.Just a slight improvement required with the length of the charging cord. Excellent product overall.
Date published: 2025-02-24
Rated 5 out of 5 by D Jay from Cheap heat low cost Smart air picks up the heat from the radiator and throws it out across the room so instead of having heat rising straight up, because Smart air is constantly pushing heat out, it spreads throughout the room. I charge it up overnight, at virtually no cost, and this is more than sufficient to run it throughout the day into the evening.
Date published: 2025-02-23
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  • 2 Year Exclusive Warranty
  • SmartAir BOOST
  • Charger
  • 2x SmartAir BOOST Stabiliser Feet
  • Instruction Manual
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