The Valiant Radiator Fan is available on Amazon for £29.99, and shoppers say it 'heats the room really quickly'. The gadget is designed to improve warm air circulation and distribute heat evenly across a room, according to the product listing.
The fan features a triple-fan design and a 'universal magnetic fit', meaning it securely attaches to most double radiators with 'tool-free installation'. Its built-in 5,200mAh lithium-ion battery provides 'hours of cordless use', and it has USB Type-C charging.
Features and alternatives
Shoppers can choose from three fan speeds, an auto mode and a timer, and it has a clear digital temperature display. The operation is quiet and it is described as 'slim (and) lightweight'.
Elsewhere, Argos has the Drew&Cole SmartAir BOOST portable radiator fan for £50. The site says this sits beneath the radiator and uses four energy-efficient axial fans to redirect rising warmth into living spaces. At Currys, there's the SPEEDCOMFORT Radiator Fan Extension Set in white for £39.99, which has a temperature sensor that automatically switches the fans on and off.
Shopper feedback
The Valiant Radiator Fan has been rated positively by Amazon shoppers, and more than 300 have been bought from the site in the last month. It's also listed as an Amazon's Choice product.
One shopper said: "I didn't really expect this to make a big difference to the heat off the radiator, but it really does." A second added: "I was a bit sceptical but this is a well-made unit which does spread the heat from the radiator really well. It's quiet in operation and has an auto mode which will fire it up when it reaches a specific temperature and goes off again as the radiator cools. Well packaged and good instructions."
A third person shared: "Good quality product, does what it says, heats the room really quickly, very little cost, charges very quickly and then it's ready to use. I would recommend it." Others left feedback, such as one who wrote: "Very good item, the only down side is the battery only lasts around two days of regular use on auto mode. You could, though, keep it plugged in the mains supply, then it's not an issue. Recommended product."
Another commented: "Very easy to use. A little background noise whilst working, but not obtrusive. Blows air across the room, so it does what it's meant to. Hopefully I'll save money on bills next winter."
