ConsFirst / Space heaters / Compare
Dreo Atom 316 Space Heater vs De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator
Which one has the downsides you can live with?
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The short answer
Dreo Atom 316 Space Heater ranks higher (#3 vs #4 of 8) and scores better on heating power, safety features. De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator wins on even, steady heat, quietness, controls & thermostat, durability.
The biggest complaint about the Dreo Atom 316 Space Heater is some units stop working within months; for the De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator it's very slow to warm up. Pick the one whose catch bothers you less.
Side by side
| Dreo Atom 316 Space Heater | De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator | |
|---|---|---|
| Rank in space heaters | #3 | #4 |
| Price tier | $ | $$$ |
| Type | Ceramic | Oil-filled |
| Amazon 1–2★ share | 4% | 11% |
| Overall score | 3.7 | 3.8 |
| Heating power | 3.5 | 2.5 |
| Even, steady heat | 3.5 | 4.5 |
| Quietness | 4.0 | 5.0 |
| Safety features | 4.5 | 3.0 |
| Controls & thermostat | 3.5 | 4.0 |
| Durability | 3.0 | 3.5 |
Price tiers: $ under $60 · $$ $60–150 · $$$ over $150. Highlighted = clearly better (a score gap of 0.3 or more, or a 1–2★ share at least 3 points lower). Scores are explained, with sources, on each product's page.
Top complaints
Dreo Atom 316 Space Heater
- Some units stop working within months
Reliability is a mixed aspect in Amazon's review summary (894 mentions: 497 positive, 397 negative). Some owners report it stops working after 8 months.
- Touch buttons are hard to find
Good Housekeeping's only con: its touch-sensitive buttons may be difficult to locate or identify because they aren't backlit and give no tactile feedback.
Source: Good Housekeeping - Built for smaller spaces
Good Housekeeping pitches it for keeping smaller areas warm, or suggests buying two for larger spaces; in its lab it raised a medium room by 7°F in 30 minutes.
Source: Good Housekeeping
De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator
- Very slow to warm up
Wirecutter says it can take a half-hour or more before you feel any warmth, and even after an hour it might raise the room by only a few degrees.
Source: Wirecutter - Burning or chemical smell
Odor is a mixed aspect on Amazon, with some owners reporting a burning chemical smell. Wirecutter says new oil-filled radiators can give off a stench from leftover manufacturing oil that should fade.
- Hot surfaces, bulky, some early failures
Wirecutter measured the case at 180°F after four hours, hot enough to burn skin, and notes it weighs 25 lb, is suitcase-sized and can be top-heavy. Reliability is mixed on Amazon, with some owners saying it stopped working after two weeks. The warranty is just one year (Wirecutter).
Who should pick which
Pick the Dreo Atom 316 Space Heater if
Small bedrooms and offices
A budget heater with an exact-degree thermostat
Buying two units for a larger space
Skip it if: You want physical buttons you can feel in the dark; You need to heat a large room with one unit; You want proven long-term reliability
Pick the De'Longhi Dragon Digital Full Room Radiant Oil-Filled Radiator if
Long, steady background heat
Silent operation in bedrooms or studios
People who dislike forced-air heat
Skip it if: You want fast, instant warmth; You have small kids or pets who might touch it; You're sensitive to smells
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