Using electric appliances around the house can cost you a lot of money if you don’t pay attention to the efficiency of each and every device. With that in mind, a space heater will be one of the most energy-consuming products unless you choose the most efficient space heater for large rooms. There are several variables to consider and we will help you make a smart, easy decision.
Here are the most efficient space heaters for large rooms you can buy in 2021:
- Best Quality: Dyson (61874-01)
- Best Radiant Heater: DeLonghi Oil-Filled Radiator Space Heater
- Best Wall Mounted: Stiebel Eltron 074057
- Best Panel Heater: De'Longhi Mica HMP1500
- Quietest: Dr Infrared Heater Portable Space Heater
- Best For Extra-Large Rooms: Lifesmart Lifelux 8
|6 Most Efficient Space Heaters For Large Rooms|
Best Radiant Heater
|DeLonghi Oil-Filled Radiator Space Heater|
Best Wall Mounted
|Stiebel Eltron 074057|
Best Panel Heater
|De'Longhi Mica HMP1500|
|Dr Infrared Heater Portable Space Heater|
Best For Extra-Large Rooms
|Lifesmart Lifelux 8|
Best Quality: Dyson (61874-01)
- A unique, interesting decorative item – futuristic design
- Multifunctional and versatile for different purposes & all-year-round usage – two running modes & able to heat and cool a space
- Smart and energy-efficient - Intelligent Thermostat
- Extremely safe to use – auto-shutoff whenever tipping over, no heating elements exposed nor fast-spinning blades
- Not really quiet
Dyson (61874-01) is currently the most well-loved space heater on the market.
It stands out from the rest by the futuristic, sleek design that is definitely a nice decorative item in a house. The size is also compact and the weight can’t be lighter.
What even impressed us more was its functionality, highlighting two running modes - the diffused and focused for different purposes. We love that it has a cooling function as well for all-year-round usage.
The biggest selling point of this model is it features Intelligent Thermostat which tracks room temp precisely to adjust it to your desired heat with NO energy wasted.
Parents or pet owners will also love to use this heater as its design is very safe, with no heating elements exposed nor fast-spinning blades at all.
Additionally, it will automatically shut down if accidentally tipped over. Smart!
|Dyson (61874-01) Specifications|
33 to 99 degree
450~500 Square feet
8.03 x 6.02 x 23.4 inches
Through years of testing and finding the best quality space heater, we have found nothing that can beat this Dyson.
Best Radiant Heater: DeLonghi Oil-Filled Radiator Space Heater
- Controllable and customizable – three heat settings and an adjustable thermostat
- Simple to use – no assembly requirement & no maintenance
- Run quietly – oil-filled design with no loud fans or blowers
- Wish the wheels were designed to be neater
- The fins get hot to the touch
- No remote control
You’re going to love this model if what you actually need is a good radiant heater.
It looks neat, requires no assembly nor maintenance, and is easy to use. Providing three different heat settings and an adjustable thermostat, allows you to customize the heat to your comfort.
The unit is also good at heat retention, meaning that it helps you cut off lots of energy and save more.
About our most favorite feature, it is the operating noise. As this is an oil-filled model which has no loud fans nor blowers, it runs extremely quiet and we’d love suggesting it for bedrooms or office rooms.
|DeLonghi Oil-Filled Radiator Space Heater Specifications|
Min - 700W, Mid - 800W, Max - 1500W.
300-400 square feet
5.9 x 13.78 x 24.9 inches
Three heat settings and an adjustable thermostat
This DeLonghi is just the ticket if you are looking for a steady, gentle, and quiet radiant heater
Best Wall Mounted: Stiebel Eltron 074057
- Heat a space up pleasantly - down-draft construction
- Convenient to use - an on/off switch, frost protection setting, a 60-minute booster timer, and integrated thermostat
- Ultra-quiet - a 49dB radial type blower and 49.7dB squirrel cage type blowers
- There’s no way to hide the wire from the wall to the heater
- The fan could be stronger
The Stiebel Eltron 074057 has the most outstanding performance out of numerous wall-mounted heaters that we’ve tested.
Boasting down-draft construction, it heats a space up evenly in the most comfortable way, and is able to warm a maximum area of 215 square feet, which really wowed us.
Besides, you’ll have got lots of practical add-ons from this design, such as an on/off switch, frost protection setting, a 60-minute booster timer, and an integrated thermostat to adjust the temp from 41 to 86 degrees F.
A big bonus is its ultra-quiet operation, boasting a 49dB radial type blower and 49.7dB squirrel cage type blowers. This will make it a very great choice for people who really hate noise.
|Stiebel Eltron 074057 Specifications|
215 sq. ft.
20.08 x 15.35 x 6.3 inches
The Stiebel Eltron 074057 is the most quality and best performer you could find on the market when searching for a wall-mounted heater.
Best Panel Heater: De'Longhi Mica HMP1500
- Versatile – able to be used as a wall-mounted or a standing heater
- Space-saving – slim design
- Portable and maneuverable - the added castors and carrying handle
- The markings on the dials are very hard to read.
De'Longhi Mica HMP1500 is the best solution for those homeowners who love having a heater but don’t want it to cramp up their space.
It is one of the slimmest designs on the market and probably the most versatile here. You can let the product stand on its own or mount it anywhere wanted.
We do appreciate the added castors and carrying handle to make it more portable and easy to move around.
There are two heating modes, high (1500W) and low (750W), to choose from. It’s also built with full safety features, such as power indicator lights, an internal tip-over switch, and a safety thermal cut-off.
|De'Longhi Mica HMP1500 Specifications|
300 sq. ft.
27 x 10 x 22 inches
Able to be used as a wall-mounted or a stand heater
If you’re looking for the best panel heater, we’ll tell you, this De'Longhi is basically awesome to try.
Quietest: Dr Infrared Heater Portable Space Heater
- Superbly quiet during the use – emit only 39 decibels
- Extra convenience – compatible with a remote control
- Safe and trusted - UL listed
- The remote control has no button to power it off
- Its cabinet quality could be better
- The indicator lights are too bright to use at night, in a bedroom
Compared to others, this Dr Infrared is insanely quieter.
From our measuring results, its fan emits only 39 decibels so although this comes with no fan speed setting, we don’t find that a real matter at all. If asked to describe how quiet it is, this heater would be as smooth-sounding as a white noise machine.
Besides, it comes with a remote control for much more convenience during the use, and there is a 12-hour timer.
If you prefer some technical information, it is UL listed for safety.
|Dr Infrared Heater Portable Space Heater Specifications|
13 x 12.5 x 17 inches
Noise level of 39 decibels
Despite its modest silhouette, the Dr Infrared Heater is superior to other similar counterparts, especially in terms of quiet operation.
Best For Extra-Large Rooms: Lifesmart Lifelux 8
- Powerful – heating coverage of 1500 square feet
- Energy-efficient – eco mode & a 12-hour timer
- The power switch is not really quality
This commercial-grade heater is flawless for extra-large spaces, such as workshops, garages, or studio apartments.
Its heating coverage is 1500 square feet and there are three settings – eco, low, and high – along with a 12-hour timer.
It kicks out a good amount of heat to keep an entire drafty room toasty warm during sub-zero cold weather. Once reading the desired temperature, it will automatically turn off.
The design looks beautiful and matches greatly to those vintage-styled rooms.
|Lifesmart Lifelux 8 Specifications|
1500 square feet
16.25 x 15.25 x 18.5 inches
Heating coverage of 1500 square feet
The Lifesmart Lifelux 8 is powerful enough to warm up a 1500-square-foot space without pilling up the bills, which makes it unrivaled.
How To Choose The Most Efficient Space Heater For Large Rooms?
First of all, when it comes to choosing a space heater, you need to know all the types and figure out which type is suitable for you.
Work by warming the surrounding air
The room remains warm after it’s turned off
Maintain moisture and humidity
Work well against mold
Take longer to heat up a room
No residual heat
Direct heat at people
Warm up the room quickly
20% more energy-efficient than convection heaters
The room loses heat quickly after the device is turned off
Circulate air and focus the heat on people
Remain cool to the touch during operation
Heat up the room quickly and circulate air around the room
Heat up the room quickly and entirely
Apart from these types of heater, there is another type called petroleum-fueled. These heaters are more energy-efficient than other heaters, but they are more dangerous, less versatile, and not suitable for indoor use.
Btu Output And Energy Efficiency
The best space heater for a large room must produce the right amount of heat for the room while using less energy. A heater with a higher BTU rating will offer better performance. If a heater display its heating power in wattage, here’s how to convert it into BTU: BTU output = heater wattage rating x 3.413.
To see how energy-efficient a heater is, you can check the figure on the heater then divide it by 1,000. For example, a 1,500W heater will consume 1.5kW per hour.
You should balance these two figures to get large BTU output along with energy efficiency.
The heater you choose must be suitable for the room in terms of size, which is directly related to the BTU output. To know which size is the best, you need to know the exact size of the room and calculate the required BTU output using the following formula:
Room length x room width x 10 x 3.41 = required BTU output for a room
Which Brands Make The Most Efficient Space Heater For Large Rooms?
With 28 years of experience in household appliances, Dyson offers a wide range of selection for space heaters so you will freely pick out the best for your house.
Founded in 1902, this brand focuses on making products with innovation, style, and good performance to satisfy consumers around the world. Its products will ensure the joy to use, unique features, and distinctive design.
Over the past 96 years, this brand has been well-known for energy efficiency that comes with its products. So if you really care about saving energy, this could be your go-to brand.
Dr. Infrared Heater
If you have decided to opt for an infrared space heater, you should start with this brand as this is its main product line. Its products will heat up your room quickly, offering various features for comfortable use like remote control, electronic thermostat, and low-noise blower.
How much does a space heater add to electric bill?
The answer to this question depends on how you use space heaters. If you leave it on all day, the bill will go up fast. If you want to find out how much a specific heater can cost in terms of electricity, you can check for its wattage, divide by 1,000, then multiply with the electricity price where you live.
Is space heater good for health?
Electric space heaters, like the ones we mentioned in this post, are safe for health when using indoors because they do not emit exhaust or cause air quality concerns.
Can I leave my space heater on overnight?
Space heaters pose risks of a fire hazard, so as soon as you’re done using the heater, you should turn it off. They shouldn’t be left on all night or when you sleep.
Is it cheaper to run the heat or a space heater?
If you use the space heater just for one or two rooms, it can be cheaper than the central heat. However, if you heat up the entire house with space heaters, it will cost more.
Is ceramic or infrared heater better?
After all, this comes down to your preference, whether you want directed heat to a specific spot for the warm surrounding air.
To compare, infrared heaters are hotter to the touch but overall better for your health. They are quieter too. However, ceramic heaters are particularly better for large rooms.
At this point, we hope that our detailed guideline has provided you with all the necessary information to help you choose the most efficient space heater for large rooms. There is a lot of work to do when figuring out what space heater is suitable for your place, but it will pay off. Therefore, don’t bother spending a bit extra time on this decision.