7 Best Low Wattage Space Heaters

Tired of being cold at your desk this winter?

Low wattage space heaters are great at warming YOU up and not the room.

The best low-wattage space heater I could find was the Brightown Mini Desk Heater.

On a budget? The Lasko Heating Space Heater is an even lower wattage space heater coming in at 200 watts.

Below you’ll find all the reviews and even an alternative option.

Let’s get started.

Best Low Wattage Space Heater

Mini Desk Low Wattage Ceramic Heater

Key Features:

  • Single on/off switch
  • 400 watts
  • Spreads heat 100 square feet

This low wattage space heater is loaded with features even for its bargain price.

The 5.5-foot cord will allow you to use it in a desktop setting, or if you’d like to use it in a tent when camping.

It uses only 400 watts, which is going to save you money in the long run when compared to traditional 1500w space heaters (the max that can run on 120v).

What I love about this little heater is the ceramic heating element which will help aid in taking the chill off.

You’ll be able to utilize the tip over protection and the overheat protection, making it great to use around kids or pets that may be running around.

It also runs at around 40db, which is about as quiet as a library.

Some downsides of this heater include that it doesn’t have a thermostat and won’t be much use in areas bigger than 100 square feet.

If you don’t plan to use this heater in a large room and want a low wattage space heater that won’t break the bank, this unit is nothing to sneeze at.

It’s got double the wattage power of the Lasko Space Heater in 2nd while still being small enough to fit on a desk and keep you warm.

  • Portable
  • Lower than 45 dB while working
  • ETL listed desktop heater
  • Automatic overheat protection system
  • No thermostat
  • Not great for a large space

Also Great Low Wattage Space Heater

Also Great
Lasko Space Heater

Key Features:

  • 200-Watts 
  • 682 BTUs
  • 6 inches tall

If you’re after a super low wattage space heater, then this is it.

Coming in at only 200 watts, it’ll be an energy-efficient space heater compared to the unit that came in at first.

It’s only 6 inches tall and is going to be great nearby at your office desk or workspace to heat your hands.

You won’t have to assemble anything and it plugs right into a 120v outlet.

This low wattage space heater also has safety features, which is incredible for a heater of this size.

One downside of this unit is its price. It’s only capable of 200 watts versus the 400 watts of the unit that came in first while being a little bit more expensive.

This heater also won’t be able to heat up a room whatsoever and only will be useable as a hand or feet warmers.

If you truly don’t need much heat and want as low of a wattage space heater as you can find, then this unit will do you well.

It’s super small and simple and will sure to be a good fit for anyone who wants to keep their feet or hands warm this winter while typing away at their desk.

It’s also backed by Lasko, a well-trusted brand, so if anything happens with your heater, you’ll be taken care of.

  • No assembly required
  • Automatic Overheat Protection
  • Portable
  • Energy Efficient
  • Can’t be cleaned without special tools
  • Lacks Tip Over Switch
  • Heat range too small

Best Oil Low Wattage Space Heater

Best Oil
COSTWAY Oil Filled Space Heater

Key Features:

  • 360 full-area heat dissipation
  • 700 Watts
  • Equipped with front carry handle

If you prefer an oil-filled radiator heater, you can still find options that are low wattage like this one.

They’re a great way to save on electricity while heating smaller spaces.

What’s great about this unit is that you can use the thermostat knob to adjust the temperature from 32F to 194F, depending on your preference.

The radiant heat will also move throughout the room in a 360 direction, unlike the other stationary heaters that only move heat in a single direction.

Oil filled radiator heaters are also quiet, as they don’t use any fan or wind to spread heat throughout the room.

This space heater also has tip over and overheat protection, making it safe to use even with the little ones running around (but always keep an eye on your heater regardless!).

The handle on the side will also allow you to move the unit easily throughout any rooms you’d like to use it in.

Unfortunately, some users said when using the product that it produced a strong chemical smell.

Others say it took a long time to warm up, but when using only 700W, it will take a while to get to your desired temperature in a larger space.

This unit is quite large, so do take that into account when you compare it versus the smaller Mini Desk Low Wattage Ceramic Heater.

If you’re wanting to save money on your heater and electric bill and have space for it, this low wattage heater is going to be a great fit for you.

Overall though, this unit is affordable and will be great for small bathrooms, RVs, or anywhere where energy is limited but still needs to keep warm.

  • Diathermic oil means no need to refill
  • Overheat and tip-over protection
  • Adjustable Thermostat
  • Strong chemical smell
  • Takes a long time to get warm

Best Small Low Wattage Space Heater

Best Small
Vornado Personal Space Heater

Key Features:

  • 1.9 lbs
  • 2 heat settings (Low/375W, High/750W)
  • Equipped with integrated handle 

If you need a super small low wattage space heater, the Vornado VH202 is for you.

It’ll be great sitting next to you in your office while you get work done (without freezing fingers!).

Vornado also employs vortex air circulation which moves the air in the room rather than blowing it in one direction.

I love that while being small, it still has tip over protection, overheat sensors, and stays cool to the touch on the outside.

You can also use the 375W or 750W settings, depending on how hot you want the unit to get.

This unit also has something else that other units on this list don’t have a 3 year warranty!

Sadly this unit doesn’t have a thermostat as the oil heater does. Some users also had issues with it smelling like burning plastic when using it.

Overall though, for such a low price, it’s hard to beat this small low wattage space heater.

Vornado is also great at making fans and they use the same technology inside of this heater to spread the heat around your room.

It will however be a bit louder due to the fan inside than radiant heaters.

It comes in at 2 pounds and has a handle to make it easy to move around.

You’ll also be able to enjoy the 50 watts more than the clunky COSTWAY Oil Filled Space Heater.

  • Tip-over protection
  • Automatic safety shut-off system
  • Quiet operation
  • No thermostat settings
  • Too fragile

Also Great Small Low Wattage Heater

Also Great Small
Mini Space Low Wattage Electric Heater

Key Features:

  • 220 Watts
  • 5.2 inches tall
  • Standard 120v wall outlet

This small and stylish low-wattage space heater is sure to please any decor.

It comes with 220 watts of power and no assembly is required.

Simply plug it right into a 120v outlet, and that’s it!

The indoor ceramic heating element on uses about 2 amps so it won’t drain your bank account with super high energy bills.

This space heater is super small, coming in at 5.2 inches tall which is a little shorter than an iPhone.

You’ll be able to choose from black or white depending on your preference. This unit also comes with tip over and overheat protection making it safe to use.

Some downside of this unit is that it doesn’t have a fan that you can control.

You also can’t choose from multiple wattage settings, so you’re left using it at 200w.

It’ll fit in your hand and won’t take up too much space on your desk. Great for anyone who wants warm hands this winter.

This unit is going to be great for anyone who wants the lowest wattage possible (which results in lower electric bills!).

  • No assembly required
  • Tip Over & automatic Overheat Protection
  • Minimal desktop space
  • Energy-efficient
  • Short cord
  • No fan control
  • No heat setting

Best Ceramic Low Wattage Heater

Best Ceramic
Honeywell Ceramic Space Heater

Key Features:

  • 250 watts
  • Two low wattage heat settings
  • One button controls

This ceramic low wattage heater is sure to please.

It’s super cheap and is designed for ease of usage. Place it on your desk or near your feet and enjoy low wattage heat without killing your wallet!

What I like is that you can not only choose from 250 watts but 170 watts as well.

It’ll heat you, and not the room, which is good for people who don’t want the room to get too hot.

You won’t have to worry about it overheating as it has shut off protection.

The outside stays cool to the touch and it’ll turn itself off should it be tipped over.

Some users who reviewed this product mentioned that it was a bit noisy and it took quite a while for it to get as warm as they’d like.

It is only 250 watts though, and you get two wattage heat settings to choose from. It’s super easy to use and will fit right on your desk, no problem.

Overall, Honeywell is a great brand to choose from and they always stand behind their products should anything go wrong.

  • Cool touch plastic housing
  • Overheat protection
  • Small footprint and design
  • 360° tip over protection
  • Noisy
  • Long time to get warm

Alternative Option

Alternative Option
Antarctic Star Space Portable Heater

Key Features:

  • Anti-tilt switch
  • Heats 200 square feet
  • 3 Modes Thermostat

If you’re wanting a space heater that can do 1500 watts as well as 750 watts, this is the unit for you.

You’ll have all the benefits of a 120v heater but will have the flexibility of choosing how hot you want it to get.

You’ll be able to heat a 200-square-foot space with ease on the highest settings.

You can use the knob on the top to control the unit, and use it on fan-only mode, 750w or 1500w for maximum heat.

The internal PTC element heats up quicker than the traditional heating elements in most space heaters.

This unit also is pretty quiet at around 45dB, which is around the noise level of a library.

It also has overheat and tip over protection which is great if you have pets that like to knock things over (like cats).

The handle on the back also makes it easy to move around, even when it gets warm.

Some downside of this unit is that the fan is a bit weak and some people have had issues with the cord melting.

Considering the downsides, it’s hard to beat this unit for the price and you’ll have the flexibility and safety features to boot.

A 1500w heater is going to be a great alternative to low wattage space heaters and it also won’t cost that much more to purchase.

With that being said, you’ll be able to actually get warm in 150 square foot spaces while a 200W heater is going to struggle to heat 20 square feet.

  • Noise lower than 45 dB
  • Tip overheat protection
  • Space saving
  • Fast heating
  • Not energy efficient
  • Weak fan
  • Heat sensitive cord

How to Choose the Best Low Wattage Space Heater?

Cord Size

A long cord will ensure that your low wattage heater can make it wherever you need it.

It’ll also be handy if you’re camping and want your heater to heat your tent while you sleep.

Safety features

Overheat and tip over protection are vital for any space heater.

Without these features, you run the risk of the space heater malfunctioning and may cause a fire and damage your home.

Most space heaters these days offer these safety features, but ensure that the unit you’re buying does (especially if you have kids or pets).

Temperature controls

Not all units are going to have temperature control like the oil filled radiator heater on this list.

Others will offer wattage settings that will act like thermostats. It’s great for anyone that wants to control how hot their space heater gets.

Noise level

If you are a light sleeper, then you’ll want to not get any forced air space heaters.

Forced air is when the space heater uses a fan to distribute the hot air from a heating element around your room.

If you require low noise levels, then look into an oil filled heater rather than forced air.

What is the best wattage for a heater?

Consider that you need 10 watts of power for every square foot of your room. So a 1500w heater will be able to roughly heat a 150 square foot space.

Consider though that these low watt heaters aren’t meant to heat a room, but rather heat your fingers or feet during cold months without driving up the energy bill.

You’ll need to practice reasonable expectations with a low wattage heater as it just isn’t powerful enough to heat a large room.

Final Thoughts

A low wattage space heater can be a great move if you want to keep warm this winter but not drive up your energy bill.

The best low-wattage space heater I could find was this Brightown Mini Desk Heater. It has 400 watts of power and is super easy to use.

If you’re on a budget, you can also opt for the even lower wattage (200 watts) of the Lasko Heating Space Heater.

Have a garage? Check out the best 120v electric garage heaters.

About Roy Cohen

Roy Cohen has a burning passion for heating, cooling, and ventilation. He aims to help you save money on expensive repairs and bring you the best HVAC products. He has years of experience behind him in HVAC repair and garage maintenance.

You can find Roy at his LinkedIn or his email: [email protected]

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