Harmoni Duero+ HDP500 - Wi-Fi Electric Radiator, 500W
Key Features of the harmoni Duero+
The premium range of Harmoni Duero+ electric heating radiators include intergrated WiFi, touch control panel and efficient energy savings features. The Duero+ offers a simple pairing method for easy control from smartphones anytime anywhere.
10-year warranty | Wi-Fi control with Harmoni App available on Play store and App store |
Ceramic Core with built in thermostatic control (±0.25) | ‘Open window’ technology |
Optional Infrared remote control | LCD screen with energy-consumption indicator |
Lot 20 compliant, IP24 | 3 sizes available |
Design

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.
Efficiency
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.
Functionality
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 upon request, 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.
Dimensions
Model | Rating (W) | Height (mm) | Width (mm) | Depth (mm) | Heats up to |
HD500 | 500W | 575mm | 345mm | 98mm | 4.5m² |
HD1000 | 1000W | 575mm | 550mm | 98mm | 10m² |
HD1500 | 1500W | 575mm | 747mm | 98mm | 15m² |
Technical specifications
Brand | Harmoni |
---|---|
Child lock | No |
Colour | White |
Depth | 98 mm |
Dimensions | 345 x 575 x 98 mm |
Heats up to | 4.5 m² |
Height | 575 mm |
IP rating | IP24 |
Lot 20 compliant | Yes |
No. of fins | 3 |
Portable | No |
Range | Duero+ |
Supplied with plug | Yes |
Thermal technology | Ceramic Core |
Timer | Yes |
Type | Electric Radiator |
Voltage | 230 V |
Warranty (Body) | 10 Years |
Warranty (Electrical Components) | 2 Years |
Wattage | 500 W |
Weight | 11 Kg |
Width | 345 mm |
WiFi compatible | Yes |
Product options
Product downloads
Product reviews
Ratings based on data collected by third party reviewing platform.
5 | 45% | |
4 | 45% | |
3 | 9% | |
2 | 0% | |
1 | 0% |
BenW, North Lincolnshire.
20 February 2023 13:44
Great Product and works efficiently.
Great service and support.
Great interaction, we had a heater damaged by the courier and they were extremely helpful in getting it replaced. Would highly recommend it.
Thank you so much for this 5-star review. We really appreciate you being a customer and helping to share the word about us. We’re here for you anytime.
Trusted Customer
7 January 2023 06:34
Problem with control panel hopefully the free of charge replacement unit will last longer than 18 months.
Great service
Purchased a new rad which had a problem after 18 months with the control panel. This was collected and replaced with new unit free of charge. Great service
Thank you so much for this review. We really appreciate you being a customer. We’re here for you anytime.
Richard Moyses
19 December 2022 11:03
4 stars for initial moment as only been used for an hour or so.
Customer service experience
Unfortunately I had a faulty product on arrival, but this was sorted out with absolute speed and professionalism. Thank you Tracey Lamb much appreciate your assistance on this matter. Will definitely be a returning customer.
On behalf of all of us at Heater Shop, I would like to thank you for sharing this great review about our store! We are thrilled that you enjoyed your experience.
Derek Nightingale
18 October 2022 12:56
Great product, service and delivery
Thank you for your positive comments about our service.
Customer service experience
Great product, great service, fast delivery.
Terena Wilson
1 March 2021 09:25
So far so good, managed to programme them myself too! Kicks our lovely heat, stays hot for some time after they're switched off. Look very smart and tidy too on the wall.
Efficient service
Efficient service, helped with alternative as what I wanted was no longer available
Thank you very much for taking the time to leave such great feedback.
Terena Wilson
1 March 2021 09:25
Lovely little heaters, gives nice even heat, easy to programme once you get the hang of it, stays hot after turns off too
Efficient service
Efficient service, helped with alternative as what I wanted was no longer available
Thank you very much for taking the time to leave such great feedback.
Trusted Customer
20 February 2021 11:01
Took a little working out how to set the programme, but straight forward once you understand how they are using the buttons in the instructions.
Customer service experience
Very helpful, an excellent and swift service.
Thank you very much for your really great review of our helpful and swift service.
Trusted Customer
20 February 2021 11:01
See previous comments about programming.
Customer service experience
Very helpful, an excellent and swift service.
Thank you very much for your really great review of our helpful and swift service.
Trusted Customer
16 February 2021 11:33
4th purchase from them, recommended
Great service
Great service
Trusted Customer
25 January 2021 06:11
Great unit easy to install and WiFi works perfectl
Customer service experience
Great customer service in helping me choose the correct unit.
Fast delivery and unit works perfectley
Brilliant to hear, thank you very much for the really great review of our customer service and fast delivery.
Related articles
Debunking the Electric Radiator Jargon
Mar 18
There are so many electric radiators to choose from with so many features and functions, but what does all the jargon mean? We take a look at many of the functions available for electric radiators and explain what each of them do and how they can benefit you. Open window detection An energy-saving technology which prevents the heater from excessive heat-wastage. The heater will detect large drops in ambient temperature and will reactively pause the system. It will then reset and resume ...
Which size radiator do I choose?
Feb 28
Choosing the right size radiator can hugely affect the comfort of your home. Too many times homeowners have overpaid on energy bills or been dissatisfied with their heating solutions. Considering basic information about your situation and its requirements can save a lot of hassle. Our guide will help you pick out the perfectly sized radiator. The most cost effective and energy efficient option is just a simple calculation away. Size The size of your room drastically affects the si...
Are radiators easy to install?
Feb 27
Yes, radiators are easy to install as they do not require any of the extensive pipe-work that central heating demands. Some of our products are supplied fitted with a standard UK three pin plug, which means you simply need to locate them next to an existing plug socket, plug them in and go. This option is ideal if you are only installing one or two radiators. However, the majority of our radiators come with a wire on, which will need connecting to a switched fused spur by a qualified elect...
Heater Shop Trade Accounts
Jul 12
Exclusive trade discount for Heater Shop trade customers. Its quick and easy, simply complete our trade application form and we aim to get back to you within 24 hours (Monday to Friday) with your log in details and your personalised credit limit. Our trade account will allow you to manage your cash flow in a way that suits you. Trade account holders will also have access to exclusive discounts for specific brands and accessories. The benefits of your trade account Priority service...
Electric Heating for Hallways
Jun 21
Its 5:35pm as you pull up to the driveway after a monotonous journey home- when you finally open the front door only to be greeted by... the dreaded hallway. The first thing you want when you simply step into your home, is for it just not to be cold. A welcoming warmth in the air is desired when you enter your humble abode - all of which, is actually very achievable in order to attain the balmy goal. Why is my Hallway Cold? To begin with, you must understand why there is a problem. I...
Heatershop visit the Spanish Rointe Factory
May 25
When Rointe invited Heater Shop to visit their factory in Spain we obviously said yes – A long weekend away to Spain exploring where our best selling products are actually developed and produced would be a fantastic opportunity not to be missed. The fact that it was in the beautiful Spanish sunshine, had absolutely nothing to do with it! All aboard A hybrid team of 7 made the 2-hour Sunday evening trip to Spain spending an intensely itinerary-specific planned trip with the o...