Dragon 4 TRD41025T Oil Filled Radiator - White

I’m using this heater in a glass conservatory with a floor space of approximately 24 square metres. Over Christmas 2025, the heater proved to be more than sufficient, allowing us to use the space comfortably throughout the day and into the evening. I now operate it using a smart plug, and it takes around 20 minutes to warm the area effectively. It’s a great little heater — I originally thought I might need two units, but one has been providing ample heat on its own. Very pleased with the performance.

I read many reviews including negative as well as positive reviews before deciding to buy this heater. Stories of the heater stinking, creaking and groaning, loud timer ticking, fiddly switch to change from manual operation to timer, over sensitive thermostat control, manual and not electronic timer, short mains lead being a problem as you are not supposed to use this with an extension cable. Sounds bad I know, but before you decide, let me tell you of my experience. Some reviewers had complained of damage to packaging and the heater itself on delivery. Mine arrived on time and in perfect condition. I immediately set in up near the open conservatory doors to run it for a minimum of two hours on highest setting as per instructions to burn off the “new” smell. I actually ran it for three hours. It did smell a bit during this procedure. Because of the short power lead, I had to use an extension lead to do this. Now the manufacturers have put a warning NOT to use an extension lead. No need to worry if you have the right extension. If you buy a generic one at a supermarket or DIY store for a few pounds, these are often (not always) rated at about 10.5 amps. The 2.5kw current draw on this heater is about 10.5 amps. A bit too near the limit for my liking. Simple answer is, buy an extension you know is rated at a genuine 13 amps. So I bought this one https://www.amazon.co.uk/Masterplug-EXS1342B-4-Gang-Permaplug-Extension/dp/B0083GLO0I/ref=sr_1_2?ie=UTF8&qid=1514650084&sr=8-2&keywords=2m+heavy+duty+extension+lead OK it’s a tad more expensive than a generic supermarket ones, but well worth the little extra to get the flexibility. It is wired using 1.25mm cable so no problem on current draw. When the heater is plugged in to this extension along with my TV, sound bar and lamp the total current draw is approximately 2.7kw, I left everything switched on (heater on full) for three hours, heater lead was cool, extension lead was cool, heater and extension lead plugs were cool. So, there is no problem using an extension lead if it is the right one for the job. As for the heater itself, well after burning off the new smell, I have found it heats the room I wanted to heat fantastically. No bad smells, no creaking or groaning, no loud timer clicking, (I THINK I heard it when I turned the TV off and sat in silence, not sure though) The switch to turn from manual to timer operation is small, but easy to operate. The thermostat itself is a tad sensitive, the lights to show it is heating do cycle on and off quite regularly, but that is the thermostats purpose, to maintain a constant temperature, just ignore it once you have got the room to your desired temperature. The thermostat is calibrated from zero to six, I set it at just below two and it heats my small 3.3m x 3m den perfectly. As for the manual timer, I think this is an advantage over an electronic one. An electronic one will have a tiny PCB and LCD, both mounted on to something designed to throw out a lot of heat. This amount of heating and cooling could POSSIBLY cause premature failure of an electronic timer. The manual timer should be more robust. There have been quite a few negative reviews about this particular heater, I am not saying that people have not experienced some problems, but I think there was some pickiness going on there, especially relation to the manual/timer switch. This was bought to replace a cheap heater from a Chinese brand, the difference is like night and day, or lukewarm and hot. All in all, this is a fantastic heater and I would recommend it to everyone that needs such a heater.

Brilliant product. Superior heat output because of the product design. Much better than traditional looking oil radiators.

I ordered two of these and, like others had experienced, both arrived dented, which was disappointing because it is turning very cold. So we wavered over whether cosmetic damage was worth the hassle of returning the items, but finally decided that we should not settle for damaged goods. However, we needn't have worried because the returns procedure means that a replacement is sent out straight away. The main downside though is the only option for us to return them is by humping them to the post office, which is really inconvenient for heavy bulky items, such as these. No Amazon locker, no collection. Once in operation, however, these are worth every penny. Our flat is a very draughty, high ceilinged Victorian thing, around 75 m3 and despite having two cast iron radiators and an open fire, the evenings are chilly. Leaving one of these on, the air warmed up very quickly. The design of the chimneys, ie the scales of the dragon's back, which I'd imagine is the reason for the name of the model, means that the heat is drawn through and distributed efficiently. You can really feel the heat coming up through these and our room warmed up well. So, it is a really good heater but the incidence of denting which other reviewers have reported might be a big hint that the panels could be made to a higher spec. If that pushes the price up, though, the cosmetic imperfection is just that. Add to that, Delonghi's 10 year guarantee, and these are a really good buy.

I bought a Delonghi Dragon 4 a year ago, so I’ve had nearly 2 winters to try it out. I must say it is an outstanding oil filled radiator. I pop it on medium heat in a 15ft x 10ft room and it heats up within 10 minutes and stays on for 10 hours per day and never had any issues with it. I’ve also used it in a much larger area and it is very effective, reliable and efficient to run too, it hardly affects my electric meter. It’s a good solid radiator, made very well but then it is De’Longhi! I would recommend this radiator.

The appliance heats up quickly, and the controls are easy to adjust. It’s a well designed and robust, which I’m grateful for, because when I started to unpack it I found difficulty removing it from the box. And it became apparent why once I looked at the radiator. The side panel with the controls on was loose, also it had dents on the front and back panels. One can only assume that this happened in transit as it be highly unlikely that the radiator would have fitted inside the box. This isn’t the first product that I’ve had problems with due to heavy handling. But in no way does this reflect on the seller or the market places themselves, it would more than likely be due lack of care or respect by certain individuals. No matter how well a item is packaged neglect will damage it.

This is a fantastic heater. Excellent heat output, with three main settings plus a dial so that, for each of the three main settings, you can further adjust heat output. Mostly I heat a bedroom but this can heat my big living room if I put it on an hour or two in advance. I got the biggest one and in truth the next-smaller one would have been enough. The heater is quite heavy. It rolls easily on carpet but if you have to lift it even a bit, beward of the weight. The casters are definitely strong enough. Careful of the casters, as they fold in and out. You fold them out when you first set up the unit. I've had one fold back in when I was pulling the heater over an uneven surface. If you're moving it on an even surface, the casters are strong and don't fold in. I've not yet used the timer function because you need to keep in turned on all the time for the timer to work. And I always turn it off at night, and often for a few hours in the day. So that timer isn't very useful for me. An excellent heater. Pricey, but it works well. I got this to replace a cheap 30-quid heater that I returned because the heat output was so low you could put your hand on it even on the highest setting. This heater, by contrast, heats wonderfully well. if you can afford it, you'll not regret getting this.

A good and sturdy radiator. It heats a small room (approximately 4m x 9m X 2.5m) in about 5 minutes. It retains heat after being switched off much more so than others I have owned. Good for an office room or even a garage. It's quite tall (about 65cm) and reassuringly heavy. It's designed to convect some of the heat out from a vent on the top which really helps the room - warming process. Oh,...the wheels on the bottom come prefitted and are fine but maybe a bit of a weak spot of you're moving it around frequently on rough services.

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