De'Longhi 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.

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.

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.

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.

my bedroom starts of hot and then gets very cold overnight even with windows shut. using this product i have on for a few hours between 3-8am. the room no longer goes unbearably cold and i can actually remove my blanket at early hours as gets warm enough. the bedroom is small. the build quality is robust but the fold out wheels could be stronger, probably not an issue if you are going to have in one area and not move it about. manual is not too good but you can watch a youtube video on how to use the controls which are similar in most of these types of devices. the main thing is you dont have to keep turning it on like some digital variants with a 24hr timer. this is set an forget and will come on at whatever times you have set. reading the reviews of the cheaper comparable products i say buy this as 1 reliable brand 2 good quality and 3 long warranty . i suspect this will last 20 years.

The product itself is great, excellent heat output, easy to set up although some of the dials & digits are slightly difficult to see. This item is fairly heavy making manoeuvring and carrying difficult + even more awkward as there is only one handle on one end not the same as the pictures advertising it! This means you have to hold it by the metal body at one end which is a bit sharp and hot if its been in use. Thats the good bit over, now my moan about Amazon and delivery. The only good part of ordering these off Amazon is the price, once ordered there was no communication and they were eventually dispatched 5 days later on the day they should have arrived with 2 seperate dates for the following week for arrival, they did in fact arrive together the next day also, be prepared to receive damaged radiators as they are sent in the manufacturers packaging which simply is not strong enough for the way Amazon throw them out for delivery, I ordered 2 of these, 1 was like brand new, the other was dented on both sides, a replacement was sent but this was dented on one side, I have given up complaining as it means that the damaged one will be picked up without warning any day of the week! And i dont have time to sit in all week. Also they will not collect the damaged one when dropping off the replacement! I think this process is done on purpose by Amazon so that you cannot be bothered to return items, if you want a 'brand new' one get one from elsewhere, if you dont mind receiving one that looks like a seconds item but paid for a brand new one then take a risk with Amazon. I will not be purchasing anything that is heavy or expensive from Amazon again, lesson learnt! A painful and time consuming experience with Amazon.

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