Best Energy Efficient Space Heaters of 2021: Complete Reviews With Comparisons

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Nowadays, household energy costs keep spiking because of unnecessary electrical consumption dragged on by inefficient appliances.

While cooling and air-conditioning account for much of the electricity costs during the summer, heating typically covers most energy used during winter.

The best energy efficient space heater can keep you warm during the chilly months while helping you cut down on your utility bills.

In the following reviews, we’ll look at five space heaters with exceptional energy efficiency ratings.

With any one of them, you will be cutting on utility costs all through the winter.

Comparison Chart

TaoTronics TT-HE003 PTC Space Heater
Aikoper NT15-20A PTC Space Heater
AUZKIN A5836 Personal Portable PTC Space Heater
GAIATOP K-116 Portable PTC Space Heater
Dr. Heater DR968 Portable PTC Space Heater

Best Energy Efficient Space Heater Reviews

1. TaoTronics TT-HE003 PTC Space Heater

First on this list is the TaoTronics TT-HE003 PTC Space Heater.

One of the many space heaters by TaoTronics, it is an excellent choice for heating any space inside your home.

It uses advanced and energy-efficient positive temperature coefficient (PTC) ceramic heating technology.


TaoTronics offers a wide range of gadgets and appliances for personal and household use.

The company’s primary focus is on enhancing everyday living by providing reasonably priced superior-quality electronic products.

These include audio devices, home lighting equipment, and home appliances.

TaoTronics home appliances include massage guns, air purifiers, humidifiers, tower fans, and space heaters.

The TT-HE003 space heater provides three heating modes that can deliver fast heating between 41 degrees and 95 degrees Fahrenheit.

This oscillating tower heater can turn 70 degrees per cycle and provide warmth in a particular space in any room.

This coverage makes the TaoTronics TT-HE003 ahead of other models on this list.

It can efficiently heat a room with an area of up to 15 square meters, or just over 161 Sq. Ft.

The three heating modes are High at 1500 watts, Low at 900 watts, or Energy-Saving ECO, which automatically switches between High and Low as needed.

Another good feature of the TaoTronics TT-HE003 is that you can control it remotely.

The built-in LED display shows the current settings and has a receiver for the included remote control.

The great thing about this is that you can change the three heating modes using the remote control without standing up.

What’s more, a built-in timer lets you initiate a shutdown sequence for a maximum duration of 12 hours.

The TT-HE003 measures 7.7 by 7.2 by 24.1 inches. It has a carry handle for easy relocation anywhere in your home.

It weighs four pounds, though, and is the heaviest unit on this list.


  • Helps lower energy consumption during winter
  • Can be controlled remotely
  • Distributes heated air effectively
  • Does not take up too much floor space
  • Easily portable because of the carry handle
  • Can be set to shut down automatically


  • Can only efficiently heat a space up to 15 square meters
  • Most expensive unit on this list

2. Aikoper NT15-20A PTC Space Heater

Aikoper is a registered trademark under the company Foshan Kupo E-Commerce Co., Ltd.

It produces many electric home appliances, including barbecues, coffee machines, fans, steamers, humidifiers, and heaters.

The brand understands that it is not always smart to warm up the whole house if you only stay in a few rooms at a time.

Instead, it would be more cost-effective to run a space heater to generate soothing warmth in a more confined space.

One of Aikoper’s solutions for immediate small-space heating needs is the NT15-20A PTC space heater.


Like the previous unit, the NT15-20A uses a PTC ceramic heater with an ultra-efficient fan for fast heating.

Two top dials let you control the device and make adjustments for more comfortable settings.

One dial is for an adjustable thermostat. The other is for choosing between three pre-set temperature settings: Low, Medium, and High.

These three settings run at 600 watts, 900 watts, and 1500 watts, respectively.

Aikoper brings portability to a whole new level with the NT15-20A PTC space heater.

It is so small that it measures only 6.4 by 4.8 by 9.1 inches and weighs only 2.99 pounds.

The device does not oscillate, though, which means it only occupies the same space as its dimensions.

Its fixed blowing direction also means that it only warms up a smaller space than oscillating models.

Aside from being an adjustable space heater, the Aikoper NT15-20A has a fan-only option, giving the device a total of four operation modes.

Thanks to these modes, you can use the unit to cool off during the summer instead of storing it away to collect dust in the basement until the next winter season.

Next to flexibility and adjustability, you can stay complacent with the added safety features of the Aikoper NT15-20A.

You will like that it comes with an ETL certification, ensuring its safety for everyday use.

Also, the device automatically shuts down during accidental tip-overs and power surge overheating.

What’s more, you can enjoy a good night’s sleep or a quiet, cozy time reading a book or listening to music because of its low noise output.


  • Very affordable space heater
  • Heats up in three seconds
  • Four-season fan using four operation modes
  • Adjustable thermostat
  • Space-saving and portable
  • With tip-over and overheat shutdown protection
  • Perfect for tight spaces


  • No remote control
  • Does not oscillate
  • Very small and can only heat up a small space

3. AUZKIN A5836 Personal Portable PTC Space Heater

Like TaoTronics and Aikoper, AUZKIN produces a vast array of household appliances, equipment, and automotive parts.

It specializes in dehumidifiers, aroma diffusers, air coolers, air purifiers, kitchen appliances, and space heaters.

One of their products is the AUZKIN A5836 Personal Portable PTC space heater.


The AUZKIN A5836 is a very popular space heater in countries all across the globe.

What’s impressive about it is that it uses a PTC ceramic heating element, which heats up in just one second.

This space heater has an oscillating function that swivels the heater at an angle of 45 degrees to distribute heat.

Look for the main switch at the unit’s bottom rear portion before going over the top panel controls.

The top panel controls include buttons for a secondary on and off switch, a low-high switch, a fan switch, and a swing switch.

The AUZKIN A5836 measures 4.9 by 4.9 by 8.1 inches, making it smaller than the Aikoper NT15-20A.

However, its oscillating function makes it occupy a bit more space.

You’ll also find that it weighs slightly lighter than the Aikoper NT15-20A at 2.81 pounds.

While the swing or oscillating function is off, the AUZKIN A5836 is even more compact and portable than the Aikoper NT15-20A.

You will also like that it has low and high heat functions so that you can choose an appropriate heat level for your specific needs.

Moreover, it can operate its fan even when the heater is off, making it functional during the warm summer season.

The unit has a LED indicator that tells you which function it is currently running. The blue light is for fan mode, light red is for low heat, and red is for high heat.

Its size and flexibility make it an excellent choice for heating a specific space in your office, bedroom, or living room.

The controls are very easy to use, too. The unit would even automatically shut off during any accidental tip-overs and overheating problems.

If it accidentally tips over, the fan will continue to run for 20 seconds to cool the PTC heating element.

Additionally, the device shuts down as soon as it registers an overheating temperature of 113 degrees Fahrenheit.

Power spikes sometimes cause uncontrollable overheating that would not register for the automatic shut-off.

When the device reaches a secondary temperature reading of 235 degrees, the internal fuse breaks, rendering the unit inoperable.

This double safety feature is a big plus for safety.

Still, we think the manufacturer should provide broken fuse replacements to make the unit last longer.


  • Most affordable unit on this list
  • Very compact and portable, easy to carry
  • Quick-heating space heater
  • Tip-over shutdown protection
  • With overheating shutdown protection
  • Usable even in summer
  • Oscillates up to 45 degrees


  • The device is very small for heating a whole room
  • Does not have a remote control

4. GAIATOP K-116 Portable PTC Space Heater

GAIATOP has several space heaters in its product line, but we’ll be discussing their most popular model.

Its popularity comes from its quick-warming feature, more advanced PTC heating technology, portability, and safety.


GAIATOP brings a unique addition to this list.

While other space heaters seem typically bulky and unsightly, the GAIATOP K-116 space heater can bring a stylish look and a homey feel to a room.

It has a very modern appearance that any visitor can mistake for a speaker of some sort.

As a beautiful addition to interior space elements, it can even pass off as an excellent conversation starter.

The heater has a sleek, round head with three very modern wooden pegs as its legs. It fits right in with any room décor.

Without its legs, the reduced height makes it more portable than any other model on this list.

The K-116 Portable PTC is an energy-efficient unit that could make a small space more comfortable during the cold winter months.

Its ceramic heating element is ETL-listed, which means it is safe to use in any residential or office setting.

Aside from the device’s main controls, there is an independent on and off switch at the rear.

Shift between three modes using the main controls: 1000-watt high heat mode, 600-watt low heat mode, and normal blow fan mode.

The GAIATOP K-116 measures 8.1 by 6.9 by 7.3 inches and weighs only 1.61 pounds.

Its wind tunnel design uses a wide pipe’s cross-section to ensure smooth airflow and reduce heating and cooling times.

For safety, it has an automatic thermostat that enables it to shut down automatically during accidental overheating and tip-overs.

The device’s shell is made of class V0 fire-resistant material that passes UL, CE, and ROSH safety certifications.

As for functionality, any user can benefit from its flexibility.

The GAIATOP K-116 is usable both in the cold months of fall through spring. And it can even double as a simple blow fan during the summer.

This feature is a property it shares with the AUZKIN A5836 and the Aikoper NT15-20A.

Compared to those two units, though, it uses a more energy-efficient low wattage for its high heat mode.


  • Very affordable
  • Classy design
  • Most lightweight unit on this list
  • With safety protection
  • Two-second fast-heating feature
  • Very quiet space heater
  • Removable tripod legs for easy transport
  • Doubles as a typical blow fan


  • Irregular shape occupies more space than it should
  • Users will have to move the unit manually to redirect heating
  • Only uses up to 1000 watts, which means lower heat output

5. Dr. Heater DR968 Portable PTC Space Heater

best energy efficient space heater

Dr. Heater boasts products that offer a lot more savings on electric bills with their infrared heating technology.

Space heaters from Dr. Heater combine convection heating with energy-efficient infrared heating.

Infrared heating technology heats objects within a room, unlike others that only heat the air.

Within an enclosed space, hot air rises and causes drafts that further make the area more difficult to warm.

You can attain exceptional energy efficiency by using a space heater that heats objects instead of the air around you.

This technology is at the core of the design for the Dr. Heater DR968 Portable Space Heater.


The DR968 measures 17 by 12.5 by 13 inches and weighs 25 pounds.

It uses up to 1500 watts of power and comes with a six-foot-long power cord.

Using an electronic thermostat, the unit keeps the heat between 50 and 86 degrees Fahrenheit for overheat protection.

As an added safety feature, it also shuts down automatically when it tips over.

The DR968 has a front panel LED display and button controls for manual adjustments.

Even so, it also comes with infrared remote control for even more convenience.

The dimension and shape of the Dr. Heater DR968 make it look like a nightstand.

It has a natural-looking wood finish that makes it fit perfectly beside a bed, in a room’s corner as an end table, or beside a sofa.

Among all the models on this list, the Dr. Heater DR968 is the heaviest, which means it offers the best stability.

The problem is, its weight reduces portability. Dr. Heater remedies this problem by adding casters at the unit’s bottom.

With these, the DR968 fits perfectly anywhere as a small, movable piece of furniture.

You will like that when it comes to heating, the DR968 is able to heat up to 1000 square feet of space.

Impressively enough, it can provide 60 percent more heat than other 1500-watt models.

It doesn’t have an oscillatory feature like the TaoTronics TT-HE003.

Instead, it uses infrared heating technology that warms objects in the room for more cost-effective heating.

Infrared heat only comes out through a front portal above the manual controls, which means the top and the sides are safe to touch.

What’s more, the top can double as a usable flat surface.

The electronic thermostat ensures the DR968 is heating a room within the safe levels.

Thanks also to this feature, it automatically shuts down as soon as the thermostat detects a spike in temperatures.

For those conscious about their electricity consumption, Dr. Heater boasts energy savings with the DR968.

It has a very efficient energy-saving mode that automatically adjusts the heating temperature based on ambient heat.

The dual heating system that combines convection with infrared heating also makes the heating costs way cheaper than in other models.

Another perk of the DR968 is that it uses a very quiet blower fan.

It has a ball-bearing high-pressure low noise blower that only produces 39 decibels of sound.

A reading of 39 decibels means you’ll be hearing the same noise level present in a quiet library.

While energy efficiency is the focus of these reviews, you shouldn’t overlook how well it heats up a space, too.

Since the DR968 can heat a space as large as 1000 square feet, it can work as a full-room heater.

Its controls make it fully adjustable to work as a small space heater with very efficient low power usage.

Finally, the Dr. Heater DR968 has a lifetime filter, and its parts are UL-listed both in the US and Canada.

You might also like that it is proudly engineered and designed in the USA.

Though included in every purchase, many would not find the need to take advantage of the three-year warranty.


  • Automatically shuts off when tipped over
  • Has overheat protection
  • Unit is safe to touch
  • Provides more heat than other 1500-watt models
  • With a built-in shutdown timer
  • Very quiet device
  • Remote control adjustments
  • Flat top doubles as a tabletop


  • Pricier than other units on this list
  • No compartments if used as a nightstand or corner table

Which Is the Most Efficient Space Heater?

Among these five models, there’s no denying that the Dr. Heater DR968 is the best energy efficient space heater.

It uses dual heating to warm a large space efficiently with the same wattage available to the other models on this list.

Moreover, it does not have to heat a whole room or basement and can double as a nightstand or a side table.

With its manual and remote controls, you can adjust the settings to match your preferences and make a tiny space feel toasty and cozy.

The problem is, it does not offer much portability.

If you want something you can carry around with you into different rooms in your house, go for the AUZKIN A5836 or the GAIATOP K-116.

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