SpeedComfort tested by Kieskeurig and awarded an 8.3! 

An 8.3 for something that sits under your radiator (and that you probably never even see). Let’s be honest: a radiator fan doesn’t sound like the most exciting topic in the world. It’s not a gadget you proudly show to every guest who walks into your home. And yet. 

The SpeedComfort Duo Set with Control Sensor was tested by the Kieskeurig test panel. Kieskeurig is a well-known Dutch product comparison and review platform where consumers share experiences and compare products. Through its independent test panel, products are tested in real homes by everyday users. 

No paid advertising, just real people trying to make their homes warmer. In real houses. In living rooms with drafty windows. In home offices that never quite feel comfortable. In homes with heat pumps, old radiators, and everything in between. 

And the result? An 8.3. We’re genuinely a little proud of that. 

What stands out most in the reviews is that testers don’t talk about technology, they talk about how it feels. About how a room feels comfortable more quickly. About how the heat no longer lingers around the radiator but spreads more evenly throughout the space. Especially when the heating first turns on, many people noticed a clear difference. Where you would normally wait for the whole room to feel cozy, it now feels right much sooner. 

“As soon as the radiator heats up, you can feel that pleasant warm air flowing across the floor. It’s quite remarkable how you can feel the gradual warmth, even when you’re further away from the radiator.” 

Five minutes and you’re done 

Many testers mentioned how surprisingly easy the installation was. Click the magnets under the radiator, place the sensor, plug in the cable and done. No drilling, no technician, no frustration. 

“I clicked the fans under the radiator and plugged it in. After that, the system basically worked straight away. You hardly have to think about it.” 

So quiet people checked if it was even on 

A noisy radiator fan would defeat the purpose. Fortunately, sound wasn’t an issue for most testers. In fact, some briefly wondered whether it was running at all. 

“Sometimes I had to check whether they were on, by feeling above the radiator to see if the warm air was being distributed better.” 

In L1 (Zen Mode), the fan is virtually inaudible, ideal for a bedroom, study, or while watching TV. Boost Mode (L3) is more powerful and therefore slightly more audible, but testers emphasized that this is only temporary, until the room reaches temperature.

One degree lower, the same warmth 

Several testers reported lowering their thermostat by one degree after installing SpeedComfort, while maintaining the same level of comfort. That may sound small, but every degree lower can reduce gas consumption by around 6%. 

“This really allows me to save on heating costs without sacrificing comfort.” 

Perhaps that’s the greatest compliment: it feels warmer, without having to heat more.

Where testers were also honest 

An 8.3 is impressive… but it’s not a 10. Testers were open about areas for improvement. The price is regularly mentioned as a hurdle, especially if you want to equip multiple rooms. The connecting cable in the duo set is limited in length, which can be less practical for long radiators. And those with non-standard heating systems sometimes needed a bit more time to find the right setup. 

But then there’s this: 

“I’ve become a complete fan and decided to equip all the radiators in my house with these!” 

All those voices together, enthusiastic and down-to-earth alike, make one thing clear: SpeedComfort works. For most people, in most homes, in a way that makes everyday life just a little more comfortable.