Review · Ceramic tower
The rare listing whose coverage claim matches the standard sizing rule instead of exceeding it — which tells you something before you read a single spec.
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The Dreo Solaris 718 is a 1,500 W ceramic tower with 120° oscillation, a 41–95°F digital thermostat in 1°F increments, and a published coverage claim of 300 sq ft. It draws 12.5 A and costs about 27.5 cents an hour at the U.S. average electricity rate.
Dreo publishes 300 sq ft. At the standard 10 W per square foot that would need 3,000 W, and this heater is 1,500 W — so the claim is roughly double what the sizing rule supports. In this category, that is unusually restrained.
The claim is best read as “can meaningfully raise the temperature of a 300 sq ft room”, which a well-placed oscillating 1,500 W tower genuinely can do in a house whose main system is already running. It is not a claim that it will take a cold 300 sq ft room to a setpoint on its own, and nothing at 1,500 W will. What 1,500 W actually covers.
Top pick · A whole living room
The rare heater whose published coverage claim survives the arithmetic: 1,500 W is a genuine 300 sq ft at 10 W/sq ft, and Dreo publishes that number rather than implying more.
| Published specification | |
|---|---|
| Rated power | 1,500 W at 120 V |
| Maker's coverage claim | 300 sq ft |
| Thermostat | 41–95°F digital, 1°F increments |
| Oscillation | 30° / 60° / 90° / 120° |
| Dimensions | 7.9" D x 7.9" W x 29.7" H, 8 lb |
| Safety | Tip-over cutoff, overheat cutoff, child lock, thermal cutoff |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | 300 sq ft |
| Safety listing | ETL listed (stated by Dreo on the product page) |
Who it is for
A living room, bedroom or den at or under 300 sq ft with average insulation and an 8-foot ceiling, where you want to set a temperature and stop thinking about it.
What it is not for
A garage, an uninsulated basement, or anything over about 300 sq ft. It is not under-powered — 1,500 W is the plug-in ceiling — the room is simply too big for one outlet.
| Wattage | Per hour | 1 h | 4 h | 8 h |
|---|---|---|---|---|
| 1,500 W | 27.5¢ | $0.28 | $1.10 | $2.20 |
Computed at 18.34¢/kWh — the U.S. residential average for June 2026 (EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026). Your rate is on your own bill; substitute it and the arithmetic still holds. Figures assume full output for the whole period.
| Wattage | 4 h/day | 8 h/day |
|---|---|---|
| 1,500 W | $33.01 | $66.02 |
Computed at 18.34¢/kWh — the U.S. residential average for June 2026 (EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026). Your rate is on your own bill; substitute it and the arithmetic still holds. Monthly figures are 30-day months at full output; a thermostat that cycles will reduce them.
1,500 W ÷ 120 V = 12.5 A, which exceeds the 12 A continuous allowance of a 15 A branch circuit under the 125% sizing rule. In a bedroom carrying lamps and chargers that is a technicality; on a circuit shared with a desktop computer or a window unit it is not. The full arithmetic.
A digital thermostat with 1°F increments across 41–95°F is the single most useful thing on this specification sheet, and it is the reason this unit appears in the energy-efficient roundup. Overshoot is the largest avoidable cost in resistance heating, and you cannot avoid overshoot with an unmarked dial. Being able to set 68°F and have the unit hold it is worth more over a winter than any element technology.
Dreo publishes eight layers of protection, of which the four that matter are named individually: tip-over protection, overheat protection, a child lock, and a thermal cutoff. It also states an ETL listing on its product page. What each mechanism actually prevents.
The child lock is worth calling out because it is the least common of the four and the one that decides whether a heater belongs in a room with a toddler — see the nursery roundup, where it is an entry requirement rather than a bonus.
Not a garage, not an unfinished basement, and not a room much over 300 sq ft — not because it is a weak heater but because 1,500 W is the plug-in ceiling and those rooms need more. Also not the quietest option on this site: Dreo does not publish a decibel figure, and it is a fan-forced design, so if silence is the requirement a fanless type is the answer.
Dreo publishes a 300 sq ft coverage claim, which is about double what the 10 W per square foot rule supports for 1,500 W. It will meaningfully warm a 300 sq ft room in an already-heated house; it will not take a cold one to a setpoint alone.
About 27.5 cents an hour at 1,500 W and the U.S. average rate of 18.34¢/kWh. Eight hours is about $2.20 at full output, and roughly half that once the thermostat is cycling.
Yes. Dreo publishes a child lock alongside tip-over protection, overheat protection and a thermal cutoff, which is why it appears in our nursery and safest roundups.
Dreo does not publish a decibel figure for it, and it is a fan-forced ceramic tower, so it makes fan noise by design. If silence is the requirement, an oil-filled or micathermic heater has no fan at all.
The four units that get closest to a 300 sq ft room — and the two-heater arithmetic nobody publishes.
How a PTC element self-limits its temperature, and which rooms ceramic heaters actually suit.
All electric heaters are 100% efficient. These are picked on the three things that actually cut the bill.
12.5 A against a 12 A continuous limit — the arithmetic nobody publishes, and what to do about it.
A tabletop 1,500 W that publishes a child lock and a tip-over switch — the two features usually missing.
Room dimensions in, wattage and BTU out — with both corrections applied and the formula visible.