Dreo OH310 Oil-Filled Radiator
#1 in RadiatorsFull review
For a bedroom or office that needs silent, steady heat held at a set temperature. A fan heater warms a cold room faster for short stays.
Amazon $99.99$99.99
The Dreo OH310 Oil-Filled Radiator rates 3.9 among radiators space heaters; the De'Longhi SlimStyle HCX9115E rates 3.2 among fan heaters ones. The Dreo OH310 Oil-Filled Radiator costs $109.96 less ($99.99 vs $209.95).
De'Longhi SlimStyle HCX9115E
#36 in Fan heatersFull review
For a living room or bedroom where a slim panel looks better than a tower and a set temperature matters. The fans make it quicker than an oil radiator but not silent.
Amazon $209.95$209.95
Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (radiators and fan heaters), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Dreo OH310 Oil-Filled Radiator | De'Longhi SlimStyle HCX9115E |
|---|---|---|
| Overall rating | 3.9/5 | 3.2/5 |
| Value 25% | 57 $67 per kW ($99.99, 1,500 W) | 0 $140 per kW ($209.95, 1,500 W) |
| Safety 25% | 100 ETL listed, tip-over shutoff, overheat shutoff | 60 tip-over shutoff, overheat shutoff; no safety listing published |
| Thermostat 15% | 100 holds a set temperature | 100 holds a set temperature |
| Warranty 15% | 0 1-year warranty | 50 3-year warranty |
| Controls 10% | 75 eco mode, timer, remote; no app | 62 eco mode, timer; no app |
| Low setting 10% | 67 down to 600 W | 50 lowest setting not published (neutral score used) |
Specifications
| Dreo OH310 Oil-Filled Radiator | De'Longhi SlimStyle HCX9115E | |
|---|---|---|
| Heating | ||
| Heat settings | 600 to 1,500 W | 1,500 W |
| Type | Radiator (no fan) | Fan |
| Element | Oil-filled | Convector |
| Oscillates | No | - |
| Controls | ||
| Thermostat | Digital | Digital |
| Eco mode | Yes | Yes |
| Timer | Yes | Yes |
| Remote | Yes | - |
| App | No | No |
| Safety | ||
| Safety listing | ETL | None published |
| Tip-over shutoff | Yes | Yes |
| Overheat shutoff | Yes | Yes |
| Build | ||
| Dimensions | 12.2 x 9.84 x 26.06 in | 32.3 x 8.5 x 21.8 in |
| Weight | 17.6 lb | 15.8 lb |
| Warranty | 1 year | 3 years |
| Released | 2023-09 | - |