De'Longhi SlimStyle HCX9115E vs Dreo Atom 316 Space Heater

The Dreo Atom 316 Space Heater is the better space heater overall, rated 4.1 to 3.2. The Dreo Atom 316 Space Heater leads on value, safety and controls. The De'Longhi SlimStyle HCX9115E wins on warranty. The Dreo Atom 316 Space Heater costs $169.96 less ($39.99 vs $209.95).

Higher rated

Dreo Atom 316 Space Heater

#1 in Fan heaters4.1Full 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

De'Longhi SlimStyle HCX9115E

#36 in Fan heaters3.2Full 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.

Which should you buy?

Choose the Dreo Atom 316 Space Heater for value ($27 per kW ($39.99, 1,500 W) vs $140 per kW ($209.95, 1,500 W)), safety (ETL listed, tip-over shutoff, overheat shutoff vs tip-over shutoff, overheat shutoff; no safety listing published) and controls (eco mode, timer, remote; no app vs eco mode, timer; no app).
Choose the De'Longhi SlimStyle HCX9115E 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	De'Longhi SlimStyle HCX9115E
Overall rating	4.1/5	3.2/5
Value 25%	82 $27 per kW ($39.99, 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%	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.