The Best Smart Space Heaters and Electric Wall Heaters of 2026
Compared model by model in our Comfort & Air Quality section
Searching for “smart space heater”? Our Smart Space Heaters guide in the Comfort & Air Quality section ranks every model on what still matters after years of ownership: annual energy cost, the EU energy label (A to G), data privacy under the EU's GDPR, replacement parts for five years and Matter support. Models that lean on marketing claims get cut; the ones built to last make the list.
Our picks
Smart Space Heaters: which one should you buy in 2026?
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Best overall
Thermor Equateur 4
A thermal-mass electric heater with a cast-iron core and a heated front panel, open-window and presence detection, and control through the Cozytouch app.
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Best value
Sauter Orosi 2
A fluid-filled thermal-mass heater with presence and open-window detection, and remote control through a Cozytouch bridge, at an entry-level budget.
Photo: © Sauter
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Best with no installation needed
Mill Gentle Air WiFi
A portable plug-in oil-filled radiator heater with built-in Wi-Fi and the Millheat app, an open-window function and tip-over protection.
Photo: © Mill International AS
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Our buying guides
More categories in this section
Air Purifiers
Dyson, Philips, Xiaomi and Levoit air purifiers compared on fine particles and allergens.
Smart Humidifiers
Smart humidifiers to keep a healthy humidity level in winter.
Smart Dehumidifiers
Smart dehumidifiers that fight humidity, mold and condensation.
Smart Portable Air Conditioners
Smart portable ACs that cool apartments and offices with no installation.
Smart Fans
Dyson, Xiaomi and rival smart fans — quiet, efficient, app-controlled.
Smart Weather Stations
Netatmo, Bresser and La Crosse weather stations that track conditions indoors and out.
Smart Essential Oil Diffusers
Smart essential oil diffusers for scenting and freshening the air.
Sunrise Alarm Clocks & Light Therapy Lamps
Philips wake-up lights and light therapy lamps to beat the winter blues.
Smart Curtains
SwitchBot, Aqara smart curtain motors — open by schedule or voice.
Frequently asked questions
A fan heater to warm a bathroom fast, an oil-filled radiator heater for a bedroom, an infrared heater to warm a person sitting still, and a convection heater for a room you only pass through. For sizing, allow about 10 W per sq ft in a reasonably well-insulated room, so 1,000 W for about 110 sq ft (10 m²). A smart model with a thermostat, scheduling and open-window detection avoids heating for nothing, which matters more than the type of heater.
About 30 cents an hour at full power, at an example rate of 20 cents per kWh. The math: 1,500 W for one hour = 1.5 kWh, multiplied by the rate on your utility bill. With a thermostat, the heater switches off once the room reaches temperature, so the real cost is often lower. Over a month, 3 hours a day at full power adds up to 135 kWh, about $27 at that example rate.
No: every resistance electric heater turns 100% of its electricity into heat, so at the same wattage they all use the same amount. Savings come from the controls: an accurate thermostat, scheduling, open-window detection and switching off when the room is empty. On a time-of-use rate plan, avoid running a space heater during peak hours, when each kWh costs the most. A heat pump, such as a ductless mini-split, delivers several kWh of heat for every kWh it uses.
No, plug it straight into a wall outlet: a 1,500 W heater draws about 12.5 A continuously on a 120 V circuit and can overheat a power strip or extension cord. Never cover it, and keep 3 ft (1 m) of clear space in front of it. In a bathroom, use only a model designed for that room, keep it well away from the tub and shower, and plug it into a GFCI-protected outlet. Tip-over and overheat protection are essential.
The first time you turn it on each winter, it's usually built-up dust burning off, and the smell fades within minutes. If it lingers, switch the heater off, unplug it and check that no fabric or object is touching the grille. A smell of hot plastic, a plug that's hot to the touch or an outlet that's turning black points to a bad connection: stop using the heater and have it checked. Dust the grilles before each heating season.