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 Honeywell HeatGenius HCE840B rates 3.5 among fan heaters ones. The Honeywell HeatGenius HCE840B costs $32 less ($67.99 vs $99.99).
Honeywell HeatGenius HCE840B
#18 in Fan heatersFull review
For a bedroom or den where you want a set temperature and a gradual bedtime shutdown. Its floor and personal modes suit someone heating just their spot.
Amazon $67.99$67.99
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 | Honeywell HeatGenius HCE840B |
|---|---|---|
| Overall rating | 3.9/5 | 3.5/5 |
| Value 25% | 57 $67 per kW ($99.99, 1,500 W) | 52 $43 per kW ($67.99, 1,575 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 | 25 timer; no eco mode |
| Low setting 10% | 67 down to 600 W | 50 lowest setting not published (neutral score used) |
Specifications
| Dreo OH310 Oil-Filled Radiator | Honeywell HeatGenius HCE840B | |
|---|---|---|
| Heating | ||
| Heat settings | 600 to 1,500 W | 1,575 W |
| Type | Radiator (no fan) | Fan |
| Element | Oil-filled | Ceramic |
| Oscillates | No | No |
| Controls | ||
| Thermostat | Digital | Digital |
| Eco mode | Yes | No |
| Timer | Yes | Yes |
| Remote | Yes | No |
| App | No | No |
| Safety | ||
| Safety listing | ETL | None published |
| Tip-over shutoff | Yes | Yes |
| Overheat shutoff | Yes | Yes |
| Cool-touch housing | - | Yes |
| Build | ||
| Dimensions | 12.2 x 9.84 x 26.06 in | 10.2 x 5.6 x 17.3 in |
| Weight | 17.6 lb | 5.8 lb |
| Warranty | 1 year | 3 years |
| Released | 2023-09 | 2016-09 |