Harmoni Duero Electric Radiators

10 Year Warranty3 Pin Plug
Harmoni Duero Electric Radiators
Harmoni Duero Electric Radiators
Harmoni Duero Electric Radiators
ModelDimensionsRooms Up ToNo. of FinsWattagePriceStockQty
Harmoni Duero HD500 - Electric Radiator, 500WDUEROHD500
QF #: 16428
345 x 575 x 98 mm
4.5 m²
500 W
£141.45 exc VAT
Dimensions345 x 575 x 98 mm
Rooms Up To4.5 m²
No. of Fins3
Wattage500 W
Harmoni Duero HD1000 - Electric Radiator, 1000WDUEROHD1000
QF #: 16429
585 x 575 x 98 mm
10 m²
1000 W
£190.15 exc VAT
Dimensions585 x 575 x 98 mm
Rooms Up To10 m²
No. of Fins6
Wattage1000 W
Harmoni Duero HD1500 - Electric Radiator, 1500WDUEROHD1500
QF #: 16430
827 x 575 x 98 mm
15 m²
1500 W
£238.84 exc VAT
Dimensions827 x 575 x 98 mm
Rooms Up To15 m²
No. of Fins9
Wattage1500 W
Heater Shop

Key Features of the Harmoni Duero

10-year warrantyFlame-proof aluminium body

Ceramic Core with built in thermostatic control (±0.25)

‘Open window’ technology
Optional Infrared remote controlLCD screen with energy-consumption indicator
Lot 20 compliant, IP243 sizes available


harmoni Lugo

When searching for a radiator with a simply beautiful aesthetic there is no need to look any further than the Harmoni Duero. Its sleek design favours a white finish and upward facing grille, resulting in the model effortlessly dissolving into any residential or commercial setting.

Under the bonnet, the Duero features the most up-to-date electric radiator technology. It has full control over its environment with its incredibly accurate electronic thermostat measuring room temperature to a quarter of a degree. The readings are easily visible and accessible through the Duero’s blue front-facing LCD screen.

It offers total manual control because of its digital buttons and infrared remote control. The remote gives access to the pre-programmed modes installed in the Duero and also all your own personalised settings.


The Harmoni Duero has an inbuilt 24/7 timer so your heating is always ready whenever you need it. Its energy-saving technology optimises your heating solution’s effectiveness, saving you time and money.

Harmoni’s open window technology monitors the ambient temperature of the room and is able to react to any rapid variation. The Harmoni will pause its cycle until the temperature stabilises and then correct to suit your needs. This ensures a minimisation of energy wastage and a maximisation of efficiency.

The Harmoni Duero is Lot 20 compliant and has an IP24 rating.


The pre-installed modes the Duero features include eco, comfort and anti-frost. It also supports four editable programs. As a clay filled radiator, the radiator can fluctuate between temperature settings quickly and its aluminium shell ensures its surface temperature is reduced.

The Duero is incredibly quiet and its clay core ensures a comforting heating solution. The Duero is designed to be stylish, minimalist and utilises recent technology to lower your carbon footprint and energy consumption. The Duero drastically increases the comfort offered by your property whilst discreetly disappearing into the background, no thought needed.

The Duero offers a pilot mode, so after a user-friendly installation you can kick back and relax and let Harmoni take over. If anything was to happen we offer a ten-year warranty on every Duero purchased.

Heater Shop supplies the highest quality electric radiators, and if you have any queries we have our technical team on hand to assist - Just call 01473 276686.


ModelRating (W)Height (mm)Width (mm)Depth (mm)Heats up to

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Product reviews

4.375% Positive (4 reviews)

Ratings based on data collected by third party reviewing platform.


Norman Black
30 November 2020 08:42

Harmoni Duero HD1500 - Electric Radiator, 1500W

Efficient and stylish but hard to programme and display flashes when on which is irritating.

Thank you for your feedback. Please call our technical team on 01473 276686 to assist with this and hopefully we can sort out any issues.

View product

Heater Shop were helpful and knowledgeable when I called for advice on replacing electric radiators at my mother in law’s flat. They didn’t have my first choice in stock but with winter coming I was happy to accept their suggested alternative and they arrived within two days.


Graham Gradwick-light
13 November 2020 07:07

Harmoni Duero HD1500 - Electric Radiator, 1500W

Great value and performance

View product

Helpful, great price abs service and very prompt supply as we head into winter.

Fantastic to hear, thank you very much for the really fantastic review of our service.


Trusted Customer
3 March 2020 15:07

Harmoni Duero HD500 - Electric Radiator, 500W

Cannot set on temp below 21Deg.

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Simple to use and quick delivery.

Thank you very much for the fantastic feeedback.


Trusted Customer
22 February 2020 07:45

Harmoni Duero HD1000 - Electric Radiator, 1000W

Do what they are meant to.

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Very helpful and efficient.