KVOIDX HL-QNP05 Cordless Radiator Fan Booster

The KVOIDX HL-QNP05 is a cordless, radiator-mounted fan booster with three fans, magnetic fixing and a rechargeable battery. It is intended to circulate heat from an existing radiator, rather than serve as a standalone room heater.

At a glance

Three fans are claimed to push warm air from an existing radiator around the room.
The built-in 5200mAh battery is claimed to provide 6 to 16 hours of cordless operation. The listing also specifies USB-C charging.
Magnetic mounting is described as tool-free and detachable for moving the unit between radiators.
The listing claims noise below 25dB and describes an intelligent thermostat sensor.
The manufacturer advertises possible heating-bill savings of up to 20%. This is a claim, not a guaranteed result.

Price

£42.49Save 15%

Reference price: ~~£49.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Cordless operation and magnetic attachment give flexibility to position it on a compatible radiator without a nearby socket.
Three fan speeds provide a choice of airflow according to the listing.
Its radiator-booster format is suited to circulating heat from existing heating equipment, not adding a separate heating element.

Technical specifications

23 specifications

Identity
Brand	KVOIDX
Model	HL-QNP05

Power and battery
Power configuration	Battery Powered

Dimensions and installation
Mounting type	Magnetic
Form factor	Radiator-mounted Fan Booster
Weight	980 Grams
Dimensions (D × W × H)	9D x 42W x 10H centimetres

Operation and claimed performance
Fan count	3
Battery capacity	5200mAh
Cordless operating time	6 to 16 hours
Charging connection	USB-C
Noise claim	Less Than 25dB
Listed heat output	3 Watts
Voltage	5 Volts
Amperage	2 Amps
Maximum temperature setting	70 Degrees Celsius
Heating method	Convection, Fan-assisted
Heating coverage	Suitable For Small To Medium Rooms; Designed To Boost Heat Circulation From Existing Radiators

Other details
Colour	White
Indoor/outdoor use	Indoor
Fuel type	Electric
Spare part availability duration	2 Years
Country of origin	China

What to know before buying

Listing details to confirm

The listing gives no measured evidence for its claimed faster warming, under-25dB noise level or potential savings of up to 20%, so treat these as manufacturer claims rather than expected outcomes. Listing details are inconsistent or unconfirmed: the title says 3 fans while the feature text also describes a triple-fan design, and the battery, USB-C charging, runtime, noise and thermostat claims appear in promotional text but are not all separately specified in the technical details. The listing also describes both a maximum temperature setting and heat output without explaining how these relate to a radiator-mounted fan. Confirm the operating details and radiator fit before buying.

Who is it for?

A good fit for

People wanting to circulate heat from an existing radiator in a small or medium room.
Buyers who value cordless placement and a magnetic radiator attachment.
Households looking for a radiator accessory rather than a standalone electric heater.

Less suited to

Anyone needing an independent source of room heat, since this product is described as boosting heat from an existing radiator.
Buyers who need independently substantiated noise, energy-saving or heating-performance figures.

KVOIDX HL-QNP05 Cordless Radiator Fan Booster · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 19 ratings

5 stars86%86%
4 stars14%14%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied evidence contains aggregate ratings only, with a largely favourable distribution among a small number of ratings. It does not include customer comments, so it cannot establish which features people liked or any particular concern. For a radiator-booster purchase, check fit, operating time and performance expectations against the listing claims rather than treating the rating as confirmation of them.

Frequently asked questions

Does this work as a standalone heater?

The listing describes it as a fan booster that circulates heat from an existing radiator. It does not describe an independent heat source.

How long is the claimed cordless runtime?

The feature text claims 6 to 16 hours on a charge from its 5200mAh battery. This runtime is a listing claim, and the supplied technical details do not specify how it varies by speed or conditions.

How is the fan mounted and charged?

The listing claims magnetic, detachable mounting and USB-C charging. Check that the mounting suits your radiator before buying.

Are the stated energy savings guaranteed?

No. The listing advertises savings of up to 20%, but does not provide supporting test details or guarantee that result.