DREO Space Heater for Large Room, 24'' Electric Heaters for Indoor Use ECO

Why it's worth it

The DREO ECO gives you 1-degree temperature control from 41 to 95 degrees, oscillation, a 12-hour timer and an ECO mode, for far less than the top pick. Its 250-square-foot rating is the catch, so match it to an office or bedroom.

The thermostat is the reason to buy this one. Most inexpensive heaters give you high, low and a vague dial. The DREO adjusts in single degrees across a 41-to-95-degree range, so you can find the setting where the room stays comfortable without swinging between stuffy and chilly. ECO mode then cycles the unit to hold that number instead of running at fixed wattage, which is where the claimed savings come from.

It's quiet — rated at 34 decibels, quieter than most rooms are at night. Owners use it in bedrooms without complaint, and the 70-degree oscillation spreads heat instead of aiming a hot column at one chair. For a desk-adjacent office heater, that combination of quiet and even coverage is more useful than raw output.

From our review of 8 space heaters for large rooms, by David Sinclair, Managing Editor

What we like

• +The thermostat is the reason to buy this one
• +It's quiet — rated at 34 decibels, quieter than most rooms are at night
• +Here's the honest scope: DREO rates this for 250 square feet, and the listing calls it a large-room heater anyway
• +Safety is well covered for the price

What to know

• –Some owners report odd grinding or clicking noises developing after a few months of use — a fan bearing complaint, not a safety…
• –There's no WiFi and no voice control
• –It's tall and narrow at 23 inches, which is fine against a wall but tippy-looking next to a busy hallway