Dreo Atom 316 Space Heater
#1 in Fan heatersFull review
For a desk or bedside where a cheap, quiet heater should hold a set temperature. A larger room is better served by a tower or radiator.
Amazon $39.99$39.99
The Dreo Atom 316 Space Heater is the better space heater overall, rated 4.1 to 3.5. The Dreo Atom 316 Space Heater leads on safety, value and controls. The Honeywell HeatGenius HCE840B wins on warranty. The Dreo Atom 316 Space Heater costs $28 less ($39.99 vs $67.99).
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.
Which should you buy?
- Choose the Dreo Atom 316 Space Heater for safety (ETL listed, tip-over shutoff, overheat shutoff vs tip-over shutoff, overheat shutoff; no safety listing published), value ($27 per kW ($39.99, 1,500 W) vs $43 per kW ($67.99, 1,575 W)) and controls (eco mode, timer, remote; no app vs timer; no eco mode).
- Choose the Honeywell HeatGenius HCE840B for warranty (3-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every fan heaters space heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dreo Atom 316 Space Heater | Honeywell HeatGenius HCE840B |
|---|---|---|
| Overall rating | 4.1/5 | 3.5/5 |
| Value 25% | 82 $27 per kW ($39.99, 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% | 50 lowest setting not published (neutral score used) | 50 lowest setting not published (neutral score used) |
Independent measurements
Dreo Atom 316 Space Heater
| Tested by | Noise | Power draw | Conditions |
|---|---|---|---|
| Good Housekeeping Institute | 47.9 dB | - | Maximum setting, measured 6 in from the heater in the GH Home Improvement & Outdoor Lab. Date is the article’s last update. |
Honeywell HeatGenius HCE840B
No independent test published yet.
Specifications
| Dreo Atom 316 Space Heater | Honeywell HeatGenius HCE840B | |
|---|---|---|
| Heating | ||
| Heat settings | 1,500 W | 1,575 W |
| Type | Fan | Fan |
| Element | Ceramic | Ceramic |
| Oscillates | - | 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 | ||
| Noise | 34 dB | - |
| Dimensions | 6.02 x 6.02 x 9.64 in | 10.2 x 5.6 x 17.3 in |
| Weight | 3.8 lb | 5.8 lb |
| Warranty | 1 year | 3 years |
| Released | 2023-07 | 2016-09 |