De’Longhi Dragon4 Programmable Portable Radiator Heater TRD40615T-6A, Grey review

The De’Longhi TRD40615T-6A is the grey, six-fin Dragon4 radiator with manufacturer SKU 0110616318. Its product page lists 120 V/60 Hz, 1,500 watts maximum, a 700-watt minimum, three power settings, a mechanical control method, a thermostat, an anti-freeze function and a programmable 24-hour timer. At 24.03 pounds, it is not a light carry-around heater; its casters are for rolling it carefully between suitable indoor locations after it has been switched off and cooled.

A timer is listed, but the exact instructions do not match

The page’s 24-hour-timer claim is useful, yet the official support listing’s document link led to a manual whose title and controls identify the different TRD40615E/EL digital family. That manual describes electronic delayed-start and timed-shutoff operation. The TRD40615T page, by contrast, identifies mechanical controls. I do not transfer the digital manual’s timer sequence, operating limits or safety clearances to this T model. “Programmable 24-hour timer” is the product-page claim; whether this exact grey mechanical configuration starts later, switches off after a countdown, or uses a different schedule is unresolved until the right instructions are available.

This distinction matters in the questionnaire. The three heat levels and 1,500-watt maximum are documented, but an essential delayed-start or auto-off need should not match on a timer label alone. If a verified timer function is essential, the white TRD40615E-6A has a model-specific U.S. manual that describes delayed start and automatic shutoff from 0.5 to 24 hours. That is a different product and SKU.

Fanless heat for a grounded floor plan

The TRD40615T is an oil-filled radiator, and its product page states that the sealed-oil heater works without a fan. It warms through the radiator body and natural convection rather than an air jet. That can suit a room where you would rather not hear a blower or need a separate fan-only setting. There is no fan-only mode, no app-control claim and no reason to expect the heater to cool or circulate air when the heating is off.

De’Longhi lists a 2.15 m² (approximately 23.2-square-foot) “working capacity.” That is a specification label, not a controlled test or a promise for a drafty room. The page also markets a larger radiant surface and faster convection; those are manufacturer descriptions, not independent measurements. Use the wattage as an electrical input limit, not as a room-sizing shortcut.

Keep the unknowns visible

The dimensions are listed as 16.4 × 10.3 × 26.1 inches with no axis labels; the product image is not a substitute for a measured clearance drawing. The model-specific instructions that were accessible for the T were mismatched, so the minimum room area, furniture distance, outlet restrictions, water-area restrictions, tip-over behavior, unattended use and assembly directions remain unverified. Do not apply the TRD40615E manual simply because the two heaters share a Dragon name, six fins and a similar photograph. Confirm the exact TRD40615T manual before using any special placement or electrical rule.

The product page lists a thermostat, anti-freeze protection, a safety thermostat and a tip-over switch. These are relevant features, but they do not establish permission to operate it near a sink, in a bathroom, on a timer while unattended, or with an extension cord. A feature label is not a substitute for the precise instructions supplied with the heater.

Which Dragon should you compare?

Choose the TRD40615T-6A if a fanless radiator with three power positions and mechanical controls suits your routine, and if you are willing to verify its timer and operating instructions. The black TRD40615EBK-6A adds a digital display, ECO and child-lock claims but lacks a manual bridge for this exact black SKU in the reviewed evidence. The white TRD40615E-6A has its own documented timer sequence and manual. Do not select between these variants by fin count alone: control design and the evidence available for safe operation are practical differences.

In a standard fit search, the TRD40615T can meet indoor floor-heater, fanless-heating, three-level and 1,500-watt-ceiling needs when those documented facts are enough. It should fail an essential delayed-start, shutoff-countdown, app, bathroom or numeric-clearance requirement when the exact source does not confirm that condition. That cautious boundary is more useful than promising a feature based on a neighboring model.

De’Longhi TRD40615T-6A product page · Exact-model U.S. support listing