De’Longhi TRD40615E Dragon 4 Oil-Filled Radiator TRD40615E-6A, White review

The white De’Longhi TRD40615E-6A is a six-fin oil-filled radiator listed under SKU 0110838317. The U.S. page gives 120 V/60 Hz, 1,500 watts maximum, a 700-watt minimum, three power settings and a 25.61-pound weight. Its display and electronic controls distinguish it from the mechanical TRD40615T-6A. The page also lists anti-freeze and ECO functions; the model-specific support page links an English manual titled for the TRD40615E/EL family, which supplies detail the product page alone does not.

A timer with documented start and stop choices

The instructions explain two separate timer uses: with the radiator in standby, set a delayed start; while it is running, set an automatic stop. The range is 0.5 to 24 hours. This is a countdown-style control rather than proof of a weekly calendar or a phone-app schedule. The manual also documents an anti-freeze setting around 41°F/5°C, a thermostat set range of 50–82°F/10–28°C, and an ECO function that adjusts power toward the selected temperature. ECO is a convenience mode, not an independent efficiency rating.

In the product page’s high-level specification table, settings and wattage are listed, but do not assume that the thermostat display is a laboratory-grade room reading. The listing gives three heat settings and 700-watt minimum / 1,500-watt maximum; the manual supplies the user-facing modes without a full per-mode watt chart. I avoid inventing the middle-stage wattage.

Radiator behavior and room fit

As an oil-filled radiator, the TRD40615E provides fanless heat through its warm metal body and natural convection. It does not have a separate fan-only mode. That makes it a possible fit for someone who wants a stationary, gentle-feeling heat source rather than a directed blast of air, but it also means there is no unheated breeze when the thermostat is satisfied. The manufacturer lists a 2.15 m² (approximately 23.2-square-foot) working capacity; it is a product-page figure, not an independently tested comfort boundary for every room.

The body dimensions are listed as 16.4 × 10.3 × 26.1 inches without axis labels. Its weight and caster base make it movable across a floor, yet it is still a substantial heater rather than a hand-carry model. Make room for it on a stable, level floor, maintain the manual’s separation from furnishings and combustibles, and avoid placing it under a power outlet.

Safety conditions are part of the fit

The instructions specify a room area of at least 43 square feet (4 m²), at least 3 feet/90 cm from flammable materials at the front and top, and no contact with objects at the sides or back. They prohibit using an extension cord or outlet strip and direct the user to plug the radiator into an appropriate household outlet. The manual also warns against wet locations such as bathrooms, laundry areas and pools. These requirements are more important than the thermostat features: the heater should be rejected if the intended room cannot accommodate its operating clearances.

The product page lists anti-freeze, a thermostat and a safety thermostat. The manual describes a safety device that shuts off under abnormal conditions and includes instructions for resetting after overheating. None of those protections makes it suitable for unattended operation; the instructions call for extreme caution when a heater is operating near children or when left on without supervision. Follow the supplied exact-model guide rather than taking the abbreviated summary as permission to leave it running.

Which variant answers the shopper’s need?

The TRD40615E-6A is a strong comparison point for the TRD40615T because it offers the same general six-fin radiator format with electronic rather than mechanical controls, a thermostat range in the manual and timer actions that are actually documented. The black TRD40615EBK-6A page advertises digital features too, but its captured product description contains a model-name inconsistency and does not bridge to this exact manual. Do not assign the E manual’s 24-hour delayed-start and shutoff behavior to EBK.

Choose the white E when fanless indoor floor heat, a three-level control, a verified delayed-start or countdown-to-stop, and the manual’s strict placement rules all fit. It should fail a fan-only, app, bathroom, outlet-strip or smaller-than-43-square-foot room requirement. If the dimensions or clearances cannot be verified at the intended spot, measure first or consider a lighter heater with a clearly documented plan.

De’Longhi TRD40615E-6A product page · Exact-model U.S. support page and linked TRD40615E/EL instructions