The heater is a necessary appliance in the cold weather. It helps the entire home stay warm even if the outdoor is freezing.
The only flaw of this appliance is high energy consumption, which leads to money costing. That said, there’re ways to choose the most energy-efficient space heater for large room. Here is our ultimate guide for that!
Here are the most energy-efficient space heaters for large room you can buy in 2025:
- Best Overall: Lasko 751320
- Ultra-Quiet: Dr Infrared Heater Portable Space Heater
- Best For Kid’s Room: Comfort Zone Oscillating Space Heater
- Best For Living Room: Lasko 5160
- Best For Elderly’s Room: PELONIS Space Heater
- Best For Bedroom: Lasko 5521
| 6 Most Energy-Efficient Space Heaters For Large Room | ||
|---|---|---|
Best Overall | Lasko 751320 | |
Ultra-Quiet | Dr Infrared Heater Portable Space Heater | |
Best For Kid’s Room | Comfort Zone Oscillating Space Heater | |
Best For Living Room | Lasko 5160 | |
Best For Elderly’s Room | PELONIS Space Heater | |
Best For Bedroom | Lasko 5521 | |
Best Overall: Lasko 751320
- Very safe to use - The penetrating air velocity, elongated ceramic element, and overheating failsafe
- Convenient – a built-in timer, remote control compatibility, and oscillating function
- Sleek and stylish
- Not able to automatically shut off when the temperature hits the desired temp
The Lasko 751320 is quite popular in the space heater expert community because of not just its beautiful outlook but also the safety and functional design.
The penetrating air velocity, elongated ceramic element, and overheating failsafe it features are jewels to ensure safety for home use, especially if you have carpet at a time.
It’s also designed with built-in timer so that you can fall asleep without having to worry about waking up to turn it off. And the remote control compatibility comes in handy for lazy people who don't want to get out of bed to change the temp, turn it off, and so on.
It does have an oscillating function as well. If your living space is no larger than 300 square feet of area, this is a perfect choice.
| Lasko 751320 Specifications | |
|---|---|
Dimension | 7.25 x 7.4 x 23 inches |
Wattage | 1500 watts |
Temperature Setting | 2 - High or Low |
Highlight Features | Penetrating air velocity, elongated ceramic element, and overheating failsafe |
Designed with aesthetics, functions, and safety in mind, we find nothing can beat the Lasko 751320. It’s the best overall performer out of a bunch.
Ultra-Quiet: Dr Infrared Heater Portable Space Heater
- Superbly quiet when operating – 39 decibels of noise & smooth-sounding fan
- Safe to use - Overheat protection & Tip-over protection
- Maneuverable - Caster Wheels
- The remote control could be more functional
- Not quality cabinet
Aside from ultra-large heating coverage, the Dr Infrared Heater Portable Space Heater is well-loved for its incredibly quiet operation.
It has three settings – auto, low, and high – and if you run it at low mode, the noise level is just 39 decibels, which is even quieter than normal conversations. The fan is as smooth-sounding as a white noise machine.
Have it in your bedroom and we assure you that you’ll barely notice it's on.
About the heat output, it doesn't seem to be too strong or scorching hot but is warm enough to keep a top floor bedroom nice and cozy.
| Dr Infrared Heater Portable Space Heater Specifications | |
|---|---|
Dimension | 13 x 11 x 16 in |
Wattage | 1500-Watt |
Temperature Setting | 3- auto, low and high |
Highlight Features | 39 decibels of noise & smooth-sounding fan |
Emitting just 39dB of noise with smooth-sounding fan, the Dr Infrared Heater Portable Space Heater is a tremendous value.
Best For Kid’s Room: Comfort Zone Oscillating Space Heater
- Ultra-safe design - the automatic fail-safe, overheat protection features & ETL certified
- Good customizability - an 8-hour timer, auto-shutoff function, and a digital thermostat
- Able to heat up fast - oscillating function
- The base is a bit lightweight, which feels flimsy
- A bit noisy
- Too short cord
The Comfort Zone Oscillating Space Heater is integrated with all the features needed for a safe, convenient-to-use heater for kids’ room.
Aside from the automatic fail-safe and overheat protection features, it is ETL certified to be completely safe during the use.
There is an 8-hour timer so that parents don’t have to come and shut it off at night.
What we appreciate the most about this model is its optimal comfort when providing an auto-shutoff function with a digital thermostat for stuffiness/overheating prevention. You also can program it to remain the desired temp range as well.
For faster heating, just use the provided oscillating function.
| Comfort Zone Oscillating Space Heater Specifications | |
|---|---|
Dimension | 25.15 x 9.55 x 8.9 inches |
Wattage | 800W/1000W/1500W |
Temperature Setting | 3 – low, medium, high |
Highlight Features | Automatic fail-safe, overheat protection features & ETL certified |
Parents who are seeking the most energy-efficient heater for kids’ room should consider this model.
Best For Living Room: Lasko 5160
- Sleek, stylish, and compact – measured by 8.5 x 7.25 x 23 inches
- Full of control - oscillating function, automatic temperature mode, and timer options
- Easy to adjust – through a visual control panel on the top of the heater or through a remote controller
- Powerful performance – up to 300 square feet of heating coverage
- The temperature control could be a little more accurate
- It is room drying
For a 300-square-foot living room, the Lasko 5160 works like a champ.
It’s able to heat up such area in 10 minutes with absolutely no noise. Compared to the quartz-type heaters, this is so superior.
The oscillating function allows the unit to blows warm air around without heating nearby objects. The automatic temperature mode and timer options work as great as advertised.
Particularly, all can be tracked and adjusted through a visual control panel on the top of the heater or through a remote controller.
| Lasko 5160 Specifications | |
|---|---|
Dimension | 8.5 x 7.25 x 23 inches |
Wattage | 1500 watts |
Temperature Setting | 2 - High Heat, Low Heat |
Highlight Features | Sleek, stylish design |
The Lasko 5160 is one of the few models we feel definitely confident to introduce for living room use.
Best For Elderly’s Room: PELONIS Space Heater
- Safe enough for those families that have pets or kids - overheat auto switch, failsafe function, and anti-scalding cover
- Easy to use – large function buttons and LED display
- Highly customizable and controllable – three heat settings, an eco-mode, and a 24-hour timer
- Pricey
The PELONIS Space Heater gets the highest rating for family use due to its extraordinarily safety design.
With the overheat auto switch, failsafe function, and anti-scalding cover, it effectively prevents the edge temperature as well as ensures the heating effect. If you have pets or kids around the house, this is safe enough to use.
Additionally, all the function buttons and LED display are specifically designed to be ultra-large so that elderly people can easily use.
We also appreciate the easy operation as well as the silent working performance.
Two other big bonuses are its 24-hour timer and three heat setting along with the eco-mode function for more energy-saving operation.
| PELONIS Space Heater Specifications | |
|---|---|
Dimension | 19.09*7.6*26.38 inches |
Wattage | 600/900/1500W |
Temperature Setting | 3 (40-95°F) |
Highlight Features | Large function buttons and LED display |
If your parents usually get cold during the fall and winter, buy them this space heater. They’ll love it for sure!
Best For Bedroom: Lasko 5521
- Unobtrusive and space-saving – the tower design and measured only by 9.5
- Directions are not great.
- The front grate gets hot a little bit
The Lasko 5521 is fantastic for a mid-sized bedroom with the door closed. Being a tower, it has a small footprint and is unobtrusive. But don’t let that modest design fool you! It’s able to keeps a 18x24 bedroom nice and toasty within 5 minutes out of every 30.
It doesn’t work really noisily - just as quiet as a desk fan.
The remote, oscillation, temp control, and automatic feature are quite handy.
You can use the remote control to reset the automatic temperature from the bed if more or less heat is needed.
The unit is also safe for bedroom use. It is ETL listed, self-regulating overheat protection, and the handle does not get warm or hot while operating.
| Lasko 5521 Specifications | |
|---|---|
Dimension | 9.5" X 7.25" X 23" |
Wattage | 1500-Watt |
Temperature Setting | High Heat, Low Heat |
Highlight Features | ETL listed, self-regulating overheat protection |
If you have a small to medium-sized bedroom that needs heating during the winter, we suggest the Lasko 5521.
How To Choose The Most Energy-Efficient Space Heater For Large Room?
Types of Heaters
There are many types of heaters to choose from.
Oil-filled and hydronic heaters tend to be flat and cover a wide area. They require much time to heat up, relying on convective heating methods. However, they keep the place warm after being turned off.
Propane heaters are good for both indoors and outdoors. However, you need to ensure safety if you use it indoors.
Kerosene heaters can generate a large amount of heat for your home, heating up the entire house easily.
Electric heaters are suitable for indoor use, available in various sizes and shapes.
Fuel Options
There are many fuel options for you to choose from, you should consider the state of your home and your budget to pick the suitable fuel.
Electricity: take advantage of the available source in your house.
Natural gas: make use of the current gas supply in your house. This way is cheap, convenient, and easy to install.
Kerosene: This fuel is cheap and safer to store than propane. This fuel is also powerful, hence commonly used for workplaces.
Propane: it’s very cheap and compatible with indoors and outdoors.
Pellet fuel: this fuel is extremely powerful and can handle the entire home. It’s also cheap and efficient.
Oil: powered by the electric supply at your home, using convection currents. Therefore, it helps the place stay warm even after the heater’s turned off.
Hydronic: warm up your home using the main boiler. Hot water is transported to the heater and warms up the heating appliance.
Other Add-Ons
Modern heaters come with several add-ons, you can think of which one you would like to have. The add-ons can help you choose a heater too.
Timer: lets you set a specific time to turn on or off the heater, saving energy.
Automatic shutoff: this will effectively turn off the heater after it runs for a long time, ensuring safety for your home.
Programming capabilities: let you set different temperatures for different times in a day or allow you to control via the smartphone, for example.
Thermostats: this add-on comes with energy-efficient heaters to help you avoid using extra energy.
Overheating safety/kill switch: this will automatically cut power when the heater gets too hot, avoiding fire or damages to electric circuits.
Which Brands Make The Most Energy-Efficient Space Heater For Large Room?
Lasko
This 100-year-old brand offers a wide range of products including fans, heaters, air purifiers, humidifiers, and accessories. In terms of heaters, Lasko sells bladeless heaters, designer series, pedestal heaters, room heaters, tabletop & compact heaters, tower heaters, and utility heaters.
Dr Infrared
This brand offers nightstand heaters, which looks like a nightstand, original heaters, music heaters, and industrial heaters. If you’re looking for a heater that doubles as another appliance in your house, this is the go-to brand.
Comfort Zone
Comfort Zone sells heaters, fans, and humidifiers. It offers a wide range of heaters for different sizes and purposes such as Digital Tower Heater, Baseboard Convection Heater, Radiant Dish Heater, Oil-Filled Heater, Personal Ceramic Heater, etc.
FAQs
What type of heater is best for a large room?
Radiant heaters, convection heaters, and combination heaters.
How much does it cost to run a 1500 watt heater for 24 hours?
The cost of running a 1500W heater for a full day won’t likely be the same for different regions, but approximately, it will cost you $3 for electricity.
How do you heat a large space efficiently?
First of all, the most cost-efficient heaters for a large space are those running on LPG, or radiant heaters.
Next, choose a system for the heaters, you can opt for suspended heating or floor-standing units.
Is it cheaper to run central heating or electric heater?
There are several things to consider here, but the short answer is: using an electric heater can cost more than twice the cost of central heating.
Electric heaters can help you save money if applied in one or two small rooms, but if you live in a large place or with many rooms, it will cost much more than central heating.
Do oil filled radiator heaters use much electricity?
No, they don’t.
The heat generated by oil-filled heaters goes to the oil instead of being radiated, then it’s lost throughout the room. This type of heater consumes as much energy as other types, but due to its heat sink, an oil-filled heater consumes less electricity in the long run.
Conclusion
To know what is the most energy-efficient space heater for large rooms, there are a lot of things to consider and take into account. We hope that the provided tips and reviews above were helpful to you. Good luck!
