Space heater: which one to buy for a bedroom, bathroom or office
Ceramic heater, bathroom model or oil-filled radiator: four space heaters for bedrooms, bathrooms and living rooms, and how to keep the electric bill in check.
In this article
- How we chose
- The four space heaters we recommend
- Lasko 754200: best for bedrooms and home offices
- Dreo ceramic space heater: the quiet upgrade
- Lasko CD08200: for the bathroom
- De'Longhi EW7707CM: for long evenings in the living room
- What an "energy-efficient" space heater really means
- Fan heater, ceramic or oil-filled
- How much heater your room needs
- Noise and running it overnight
- The most common mistakes
- When to buy one, and when not to
- Our verdict
For a bedroom or home office up to about 150 square feet, the space heater we'd buy is the Lasko 754200: a 1500 W ceramic heater with two heat settings, an adjustable thermostat, a fan-only mode and overheat protection, small enough to sit on a desk. As for "energy-saving" heaters, here's the short version: every electric heater turns the power it draws into heat, so you save by matching the heater to the room and letting the thermostat do its job.
- For bedrooms and home offices Lasko 754200 Ceramic Tabletop Space Heater with Thermostat, 1500 W Budget pick See on Amazon
- For quiet nights and bigger rooms Dreo Quiet Ceramic Space Heater, 1500 W, 70° Oscillation, Remote Mid-range See on Amazon
- For the bathroom Lasko CD08200 Ceramic Bathroom Space Heater with ALCI Plug, 1500 W Budget pick See on Amazon
- For long evenings in the living room De'Longhi EW7707CM Oil-Filled Radiator Space Heater, 1500 W Premium See on Amazon
How we chose
We don't physically test the products. We compared spec sheets and manuals from Lasko, Dreo and De'Longhi, roundups from US outlets that measure heaters in real rooms, and verified-buyer reviews on Amazon.com, reading the ones written after a full winter first, since that's when the real problems show up: thermostats that cycle off too early, fans that start to whine, a plastic smell that never goes away.
Four criteria mattered. A thermostat, because without one a heater runs flat out and your electric bill shows it. Output that fits the room; in the US nearly every plug-in heater tops out at 1500 W on a standard 120 V outlet, so the real differences are in how the heat is delivered. Listed safety features: ETL or UL certification, overheat shutoff, tip-over protection, and an ALCI plug for bathrooms. And availability on Amazon.com under a verified listing. We skipped no-name heaters without a downloadable manual.
The four space heaters we recommend
Lasko 754200: best for bedrooms and home offices
Illustrative image- 1500 W ceramic, 2 heat settings + fan only
- Adjustable thermostat
- Overheat protection, cool-touch, ETL
| Type | Ceramic fan heater |
|---|---|
| Power | 1500 W |
| Power levels | 2 + fan only |
| Coverage | small rooms (about 150 sq ft) |
| Controls | Manual dials and thermostat |
| Functions | Overheat protection, cool-touch housing |
Pros
- 1500 W ceramic element, two heat settings plus fan-only, and an adjustable thermostat.
- Overheat protection, cool-touch housing and ETL certification, per Lasko.
- Light, with a built-in handle; it moves from the office to the bedroom in seconds.
Cons
- The thermostat dial has no degree markings, so you find the right spot by trial and error.
- Like every fan heater it makes a steady whoosh that light sleepers will notice.
- No timer, no remote and no tip-over switch listed for this model.
Who it's for: anyone who wants to warm a small room fast and switch off on the way out.
Dreo ceramic space heater: the quiet upgrade
Illustrative image- Digital thermostat 41–95°F
- 70° oscillation and remote
- Brushless DC fan, child lock, tip-over protection
| Type | Oscillating ceramic heater |
|---|---|
| Power | 1500 W |
| Power levels | Multiple modes + ECO |
| Coverage | bedrooms and mid-size rooms |
| Controls | Touch panel, remote, digital thermostat |
| Functions | Oscillation, child lock, tip-over protection |
Pros
- Digital thermostat from 41 to 95°F in one-degree steps, so you set a number instead of guessing.
- 70-degree oscillation and a remote: it spreads heat across a bigger room and you adjust it from the couch.
- Brushless DC fan; Dreo quotes noise as low as 34 dB, plus child lock and tip-over protection.
Cons
- Mid price tier, a clear step above the Lasko.
- On high the fan still hums; it is not as silent as an oil-filled radiator.
- More electronics means more to go wrong than a knob-and-dial heater.
Who it's for: anyone who runs a heater in the bedroom while sleeping or in a living room that needs wider coverage.
Lasko CD08200: for the bathroom
Illustrative image- ALCI safety plug for bathroom use
- 1500 W, 2 heat settings
- 1-hour timer button
| Type | Ceramic bathroom heater |
|---|---|
| Power | 1500 W |
| Power levels | 2 |
| Coverage | bathrooms and small rooms |
| Controls | Top controls, 1-hour timer |
| Functions | ALCI plug, overheat protection |
Pros
- ALCI safety plug, which Lasko lists as approved for bathroom use.
- 1500 W ceramic heat and two settings; it takes the chill off a small bathroom quickly.
- A one-hour timer button, handy for keeping the room warm after a shower.
Cons
- No real benefit over the 754200 outside the bathroom.
- The bulky ALCI plug can be awkward on a crowded outlet.
- It still needs the clearance from tubs and sinks listed in the manual.
Who it's for: anyone with a cold bathroom who wants a heater built for that room.
De'Longhi EW7707CM: for long evenings in the living room
Illustrative image- Fanless oil-filled radiator
- ComfortTemp energy-saving mode
- Wheels and built-in handle
| Type | Oil-filled radiator |
|---|---|
| Power | 1500 W |
| Power levels | Adjustable + ComfortTemp |
| Coverage | small to mid-size rooms |
| Controls | Dials and adjustable thermostat |
| Functions | Thermal slots, wheels, overheat protection |
Pros
- Oil-filled radiator, 1500 W: even, draft-free heat with no fan noise.
- ComfortTemp mode, which De'Longhi says holds a comfortable temperature at lower power.
- Built-in handle and wheels; De'Longhi's thermal-slot design keeps the surface temperature lower than older radiators.
Cons
- Slow: it takes a long time to warm a room, so it's no help for a quick fifteen minutes.
- Heavy and bulky to carry up and down stairs.
- Upper price tier of this group.
Who it's for: anyone who needs to keep a living room or office warm for hours at a stretch.
| Lasko 754200 Ceramic Tabletop Space Heater with Thermostat, 1500 W | Dreo Quiet Ceramic Space Heater, 1500 W, 70° Oscillation, Remote | Lasko CD08200 Ceramic Bathroom Space Heater with ALCI Plug, 1500 W | De'Longhi EW7707CM Oil-Filled Radiator Space Heater, 1500 W | |
|---|---|---|---|---|
| Best for | For bedrooms and home offices | For quiet nights and bigger rooms | For the bathroom | For long evenings in the living room |
| Type | Ceramic fan heater | Oscillating ceramic heater | Ceramic bathroom heater | Oil-filled radiator |
| Power | 1500 W | 1500 W | 1500 W | 1500 W |
| Power levels | 2 + fan only | Multiple modes + ECO | 2 | Adjustable + ComfortTemp |
| Coverage | small rooms (about 150 sq ft) | bedrooms and mid-size rooms | bathrooms and small rooms | small to mid-size rooms |
| Controls | Manual dials and thermostat | Touch panel, remote, digital thermostat | Top controls, 1-hour timer | Dials and adjustable thermostat |
| Functions | Overheat protection, cool-touch housing | Oscillation, child lock, tip-over protection | ALCI plug, overheat protection | Thermal slots, wheels, overheat protection |
| Price band | Budget pick | Mid-range | Budget pick | Premium |
| See on Amazon | See on Amazon | See on Amazon | See on Amazon |
What an "energy-efficient" space heater really means
An electric space heater turns almost all the electricity it draws into heat. Ceramic, coil, oil-filled or "infrared" changes how that heat reaches you, not how much energy it takes to make it. The math is simple: power in kilowatts times hours of use. A 1500 W heater on high for two hours uses 3 kWh; on a 750 W low setting it uses 1.5 kWh. Multiply by the rate on your utility bill, in cents per kWh, and you have the real cost.
So where do you save? In three places. The thermostat, which cuts the element once the room is warm: a heater that cycles off half the time uses half the energy. The right setting, because a small bathroom doesn't need the high setting for long. And how long you run it: a space heater makes sense for warming one room for a few hours, not for heating the whole house.
"Eco" or "energy-saving" labels usually mean a mode that lowers power as the room nears the set temperature. That helps, but the result still depends on how you use the thermostat.
Fan heater, ceramic or oil-filled
A fan heater pushes warm air with a fan: it heats the area in front of it within minutes and stops the moment you switch it off. A ceramic space heater uses a PTC element that limits its own temperature. It's what we'd pick for a desk or a bedroom.
An oil-filled radiator warms the air by convection, with no fan. It is much slower, but once warm it holds the temperature with fewer swings and in silence. For a whole evening, pick the radiator; for half an hour, the fan heater.
How much heater your room needs
Because almost every plug-in model is capped at 1500 W, the question is less "how many watts" and more "how well does it spread heat." A rough rule used by heater makers is about 10 watts per square foot of floor, which puts a 1500 W heater at around 150 square feet; drafty older homes and high ceilings need more margin, well-insulated rooms less. For a larger room, oscillation (the Dreo) or slow convection (the De'Longhi) does a better job than a fixed blower.
Mind the circuit, too. 1500 W is a heavy load for a standard 15-amp circuit, and if the same line runs a microwave or a hair dryer the breaker can trip. The Lasko and De'Longhi manuals both say to plug the heater directly into a wall outlet, never into a power strip or extension cord.
If your problem is damp as much as cold, heat alone won't fix it; our guide to picking a 35 pint dehumidifier covers that side.
Noise and running it overnight
Noise is what really separates these four. Any fan heater hums, louder on high; the Lasko 754200 is the most noticeable, the Dreo is quoted by its maker at 34 dB at its quietest, and the De'Longhi radiator only clicks when the thermostat kicks in. If you read or work in silence, that radiator is the natural choice.
For overnight use our view is firm: warm the bedroom before bed, then switch off or rely on a thermostat-controlled model like the Dreo. Every manual in this group says not to leave the heater running unattended.
The most common mistakes
- Covering it or drying clothes on it. Blocked grilles trip the overheat cutoff, and every manual forbids it.
- Parking it behind a curtain or under a desk. Heaters need open space in front and around them; the minimum clearances are in each manual.
- Leaving the thermostat on max. That turns it into a heater without a thermostat, the most expensive kind to run.
- Panicking at the first smell. On first use, and at the start of each season, dust on the element burns off and smells for a few minutes. Open a window; if the smell lingers, contact support.
When to buy one, and when not to
It makes sense if you heat one room at a time: the home office on work-from-home days, the bathroom in the morning, the kids' room before bedtime. In October, during October Prime Day, these models often show up among the home deals.
Skip it if you plan to heat the whole house for many hours a day: for that, a heat pump or central heating costs less for the same warmth. And don't buy a heater without a thermostat, however cheap it is.
Our verdict
Bedroom, home office and rooms up to about 150 sq ft: Lasko 754200, because it heats fast, has a thermostat and goes anywhere.
Quiet bedroom or a bigger room: the Dreo ceramic heater, for its digital thermostat, oscillation and low fan noise.
Bathroom: Lasko CD08200, the only one here with an ALCI plug listed for bathroom use.
Living room for hours on end: De'Longhi EW7707CM, slow but silent and steady.
View on Amazon.com Paid link
Frequently asked questions
Which space heater uses the least electricity?
Is a ceramic heater or an oil-filled radiator better for a bedroom?
Can I plug a space heater into a power strip?
Can I use a regular space heater in the bathroom?
Why does my space heater keep tripping the breaker?
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Emily Carter
Editorial byline of the English edition for home, kitchen and beauty. Angle: what verified reviews say happens after a month of use, and the cheap products that surprise.
Guide produced by the editorial team with AI tools from verified sources and published under the editorial responsibility of Andrea Bertolotti. How we work · Report an error
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