This unit heats my 10 ft x 12 ft enclosed porch with 9 ft ceiling adequately at 68-70 deg. A noiseless unit. Like the digital readout, though “ECO” light is very dim. Unit gives off light oil scent when heating up from cold room. Surprised since oil is sealed. All in all happy with heater.
Written by a customer while visiting De'Longhi
Customer Rating
1
Sub-par materials
on July 10, 2025
Posted by: Samp
Used for 1 year, but cord is too hot. Plastic on electrical cord started melting.
No, I would not recommend this to a friend.
Response from De'LonghiBy De'Longhi Customer Service, January 12, 2026
Dear Samp, Thank you for sharing your experience with the De’Longhi Dragon 4 Oil-Filled Radiator (Product ID: TRD40615E-6A). We understand how concerning it can be to notice the cord overheating and melting, and we want to ensure your safety and satisfaction. To address the issue, please feel free to chat with a Live Expert at: https://www.delonghi.com/en-us/delonghi-support and click Chat at the bottom right. Our team will guide you through the next steps. Before contacting us, please gather the following details so we can escalate your case to our specialized team:
1) Date and time of the incident 2) Photos or video of the issue showing the melted cord and any internal damage 3) Description of the reported issue: e.g., loose connection leading to sparking and clip damage 4) Model number and product type 5) Serial number (embossed on the underside of the unit, typically five digits like 50424) 6) Preferred email and contact phone number 7) Screenshot of this review and this message confirming the process
Important: Please keep the product because De’Longhi may want to inspect it. Once we receive this information, we will provide further instructions and guide you through any warranty claims for repair or replacement as needed. Your radiator comes with a 3-year industry-leading warranty when purchased from an authorized retailer, giving you peace of mind and access to our North America-based customer service team. We’re committed to resolving this promptly and ensuring your satisfaction. Kind regards,
We were so happy with this heater that we bought another one, this time the white version! To repeat what we wrote for the black one: we love having the digital thermostat adjustment plus the Eco function which adjusts the power used as needed which requires less frequent adjustments on our end.
This is by far the best heater I have ever purchased. I was a little skeptical at first when I realized most of the heat came out of the top of the unit, but it absolutely does an incredible job with area heat displacement, couldn't be happier with it.