Top 5 Best Space Heater For Large Room With High Ceilings 2020

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Large rooms with high ceilings or vaulted ceilings look grand and impressive but they can also be extremely hard to maintain. One particularly challenging aspect is trying to keep the room heated in the colder seasons of the years. Possible ways to keep it well heated include radiant floor heating or cranking up the central heating system. These can be expensive and not sustainable in the long term.

A space heater can help in heating a room with high ceilings. On their own, they are not sufficient to heat up a large room but they are a good supplement to your central heating. Operating a space heater would still be cheaper and more efficient than turning up your central heating as you can concentrate the heat where you need it.

However, for a space heater to be effective in a large room with high and vaulted ceilings, you will need to find one that has the correct mode of heating. There are also other features that can improve the effectiveness as well. To help you with your decision, we’ve already done the homework on just that.

Below you will find a list of five space heaters from reputable international brands, all geared towards heating a large room with a high ceiling with their pros and cons clearly listed.

HeaterHeating EfficiencySafety
Rating
PortabilityNoise
AmazonBasicsGood ✅ 4.5/5Poor ❌Quiet (39 dB)
DeLonghi MicathermicGood ✅ 3.5/5Good ✅Silent (Almost 0 dB)
Lifesmart InfraredGood ✅ 4.25/5Good ✅ Quiet (39 dB)
Dr Infrared 968HGood ✅4/5Good ✅ Quiet (39 dB) 
Heat StormModerate4.5/5Good ✅Moderate (50 dB)
Comparison of the Best Space Heater For Large Rooms With High Ceilings

You’ll also find a buyers’ guide where you can read our rationale when deciding how to rate these products, and hopefully you can use it yourself when making future purchases.

In a Hurry? This Is Our Winner!

AmazonBasics Portable Eco-Smart Space Heater

Best Overall Space Heater For Large Rooms With High Ceilings

The AmazonBasics Portable Eco-Smart Space Heater measures 15.7 x 12.7 x 15.1” and weighs 23.6 lbs. It can run on a maximum of 1500 watts and comes with a 1 year limited warranty. Although it is an infrared heater, it contains a blower which helps to distribute heat to the whole room. This feature makes this a versatile heater which can deliver targeted heat rapidly and also provide general heating to the whole room. The blower is also very quiet at 39 dB making this a suitable addition to your home office or bedroom. 

There are three power settings on this heater; Low (1000W), High (1500W) and Eco-mode. Eco-mode cycles between Low and High power to maintain energy efficiency and yet also keep you warm and toasty. The inbuilt thermostat allows you to adjust the temperature from 65 – 85℉ in intervals of 5℉. Although it is not fully programmable it still gives you good control over your heating needs. An added convenience is the remote control which you can use to adjust the temperature across the room. 

What we love about this heater is how much they value safety. Designed without any exposed heating elements, this heater makes a great choice for homes with pets and kids. For safe operation, this ETL-certified electric heater also shuts off if it starts to overheat.

Perhaps one aspect which it needs to improve on is its portability. Weighing at almost 24 lbs, it can be a challenge to move around for some. Thankfully, it comes with four rolling casters that allows for movement between rooms. However, this only applies for transfer between rooms of the same level. If there are stairs, you might need 2 people to carry it comfortably.  

Pros

  • No exposed heating element so safe for kids and pets
  • Contains inbuilt thermostat
  • Quiet blower at 39 dB 
  • Covers a large room size
  • Can distribute heat well throughout the room due to the fan blower
  • Has Eco-mode for better energy efficiency

Cons

  • Not exactly very portable due to its weight but does come with four rolling casters for wheeling

What the fans love: “No more ice fingers! Even with all the drafty areas, it’s been a big help. I highly recommend this one. I’ve purchased probably 6 different heaters in the last 5 years. This one is the best, hands down.“  


Best Space Heater For Large Rooms With High or vaulted Ceilings Buyers’ Guide

Type Of Heating

Space heaters can generate heat via 3 methods; convection, radiation and combination. 

Convection heater

Convection heater works by heating up the air around it via a heating element. The hot air rises and creates a vacuum for cool air to be sucked in and warmed by the heating element. This continued flow creates a circulation of warm air that helps to heat up the room. As such, convection heaters work best in closed spaces. It is worth noting that all convection heaters come with an in-built thermostat for regulation of ambient temperature. In essence, convection heaters work within the framework of “Hot air rises and cold air sinks”.

The advantage of a convection heater is that they excel at heating up an entire room for an extended period of time.The main drawback is that it works slower than a radiant heater as air is a poor conductor of heat. In a room with a high ceiling, the warm air will perpetually be concentrated at the top and the living space down below will not be warmed up. In addition, the room has to be properly insulated for best heating results.The slightest draft could cause the heater to function inefficiently.

In essence, convection heaters are NOT suitable for a high ceilings living room or homes.

Radiant Heaters

Radiant heaters work by infrared radiation which travels out in waves to heat up the object in front of it. It does not heat up the surrounding air at all. If you have ever sat in front of a campfire, you have experienced radiant heat. Because radiant heat does not require any medium, it can heat up the object in front of it very rapidly. 

In contrast to convection heaters, they are poor at heating up large spaces as their beams tend to be more concentrated on the object ahead and they do not heat up the surrounding air. They are very good at zonal heating and they excel in spaces where people remain still (like the bedroom).

Because they can heat up the object in front of them directly, infrared heaters are a good option in a room with a high ceiling. You just need to situate them correctly and make sure there are no obstructions to the infrared rays. 

For a review of the best radiant heaters, check out our guide on the best infrared heaters!

Combination Heaters

For combination heaters, they attempt to combine the features of radiant heaters and convection heaters together to get the best of both worlds. A good example of a combination heater would be the micathermic heaters. These heaters use a heating element known as mica which produces electromagnetic rays. Like infrared rays, these electromagnetic rays produce radiant heat. However, unlike infrared rays which will only heat up the object nearest to it, EM rays can heat up all the objects in an area as the rays are more widespread. As the objects heat up, the air warms up. Since each object in the room is being heated up at the same time, the ambient air warms up quicker.

Another type of combination heaters make use of infrared rays to heat up an element and then have a fan to warm the air above the heated element. Therefore, the heater can produce both radiant and convective heat.

A combination heater is the best type of electric heater for a large room.

The Size Of Your Room

The most important criteria to look at here is the power of the heater. As a general rule of thumb, the ratio to consider is 10 Watts to 1 square foot of space. In theory, a 1500 Watts heater will be sufficient to heat up a room size of about 150 sq feet. When choosing your heater, do have a rough estimate of the room size you are heating up.

When we spoke about the power-space ratio in the previous paragraph, it was with the assumption that you have a ceiling height of about 8 feet. Therefore, for anything above 8 feet, the rule of 10 watt to 1 square foot does not apply. You would need to increase the wattage of your space heater an extra 25 percent for every 2 feet of extra ceiling space.

Room Insulation

If your room is poorly insulated or has a faulty window that lets in cold air, you will also need to factor in for greater wattage. Typically, an increase of 20% wattage would be a good place to start depending on how poor the insulation is. Alternatively, you can consider a second space heater in the same room.

You can check out our review of the best heater for large rooms to find out more on how to size a heater.

how to size space heater

Space Heater Sizing Calculator

If you are in a hurry, you can make use of our Space Heater Sizing Calculator to find the wattage you need

Safety

Safety features are always important in any heaters due to the potential for severe burn injuries. When used in a large room with a high ceiling, heaters usually have to be turned on for long periods of time in order for them to heat up the room sufficiently. Therefore, there is a high tendency for them to become very hot themselves or overheat.

In these cases, we would definitely recommend looking at heaters which have a cool touch exterior that is fireproof and able to dissipate heat rapidly and efficiently. We would also prefer if there are no exposed heating elements or metal grates that can become hot. Overheating protection is a must so that the heater can remain safe and turn itself off automatically when the heat production is too high.

Large rooms with high ceilings are generally communal living spaces with high human traffic especially children and pets. It is therefore even more critical that the safety aspect of the heater you choose meet the above requirements to prevent any accidental burn injuries to your children and pets.

Portability 

In a large room, there are many possible spots to place your heaters so that you can get the most amount of heat. If you are talking about a convective heater then it probably does not matter as much as it will heat up a whole room anyway. However, since we have decided that infrared heaters are better in a large room with a high ceiling, then we will need infrared heaters that are portable. 

As mentioned earlier, infrared heaters can only heat up the object in front of it so you will need to frequently move the heater around as you occupy different areas in your large room. By being portable and easily transported, it will save you a lot of energy and time moving them around.

Noise

The large rooms with high ceilings in your house are usually the communal living spaces such as the living room. These rooms are generally meant for gathering and lively conversations. It would therefore be very disruptive if there was a noisy disturbance in the room. Some heaters that come with fans can get quite noisy due to the blowing force. It is a minor point but it would be preferred if we can get a quiet space heater that can suit our needs as well.


Best Space Heater For Large Rooms With High or vaulted Ceilings Product review

De’Longhi MicaThermic Panel Heater 1500 Watt

Best Wall Mounted Space Heater For Large Rooms With High Ceilings

The De’Longhi MicaThermic Panel Heater measures 27 x 10 x 22” and weighs 15 lbs. It runs on  1500W power and has a 1 year warranty. As the name suggests, it uses micathermic heating which is a combination of radiation and convection methods to deliver heat. Micathermic heating is extremely efficient. It can heat up a specific zone almost immediately much like an infrared heater but it can also heat up the whole room because of its convective effect. 

When used in a hot yoga room, you can enjoy the immediate warmth from this heater easily. If you are getting friends over to practice with you, this heater can also do a great job of heating up the whole room.

It is designed as a surface wall mounted heater but you can also attach legs to it to make it a portable heater.
What we love about this heater is that it is virtually silent as there is no fan attached to it at all. It also has an adjustable thermostat and multiple heat settings that allow you to customize this heater to your heating needs.

Although the surface of the heater looks like it may be very hot to touch, there is actually a safe grate on the surface of the heater which is safe for touch. It may get slightly warm but definitely would not burn you. One aspect that we wished could be improved is the somewhat flimsy caster wheels that makes it easy to tip over. Although there is tip over protection, this can still be somewhat if it falls over on a young child.

Pros

  • Silent operation as there is no fan
  • Can be mounted or portable
  • Inbuilt thermostat has multiple settings to customize heating needs
  • Looks sleek and neat
  • Comes with tip over and overheat protection

Cons

  • Has a tendency to overheat 
  • Caster wheels are somewhat flimsy and can be easily tipped over
  • Only 1 year warranty

What their fans love: “Last night the temperature dropped to 39 degrees, I had the unit turned on low and this morning it was still 68 degrees in my house. Which is just a perfect temperature for me. I highly recommend the purchase of this unit!


Lifesmart Element Large Room Infrared Heater

Best Portable Space Heater For Large Rooms With High Ceilings

The Lifesmart Element Large Room Infrared Heater measures 11.6 x 9.7 x 12” and weighs 8.25 lbs.  It runs on 1500 wattage and has 6 quartz infrared elements that are actually wrapped in a metal heat exchanger coil. In terms of style, it may not be the most outstanding. However, some homeowners would appreciate the simple and professional look which makes it a perfect addition for a home office.

What we appreciate is the 3 energy savings settings that we can choose from. This includes an Eco Setting that will heat smaller areas to 68 degrees using only 500 watts making it a natural choice for users who are more energy efficient. 

Other energy saving features include the inbuilt programmable thermostat that allows you to adjust to the temperature you want, and the heater will cycle on and off to maintain the desired room temperature. There is also a programmable timer with a maximum duration of 12 hours that gives you the flexibility to turn off the heater earlier in the morning and saves you some energy and money. 

The space heater is equipped with overheating and tip-over protection, it will shut off automatically when the temperature is over 176 ℉ or knocked over accidentally to help prevent accidents, efficiently avoiding burning or fire or any other safety accident.

The limitations of the heater are the air filters which need regular cleaning and the short power cord that comes with the heater. At 6″ long, the cord might limit the placement of the heater.

Pros

  • Features an ECO energy mode for energy and cost savings
  • Easily portable with glide caster wheels
  • Has a large remote control to operate the digital thermostat
  • Programmable timer to facilitate early shut off in the morning
  • Has tip-over and overheat protection

Cons

  • Contains an air filter which will need regular cleaning
  • Short power cord (6″)

What their fans love: “We have several of these heaters and have had them for just a few weeks over 3 years now. I can say I’m very happy with them, we’ve never had a scare, they’ve never malfunctioned and they’ve helped keep us warm!”


Dr Infrared Portable Space Heater, 1500 Watt

Best Infrared Space Heater For Large Rooms With High Ceilings

Th

The Dr Infrared Portable Space Heater with Humidifier 968H measures 13 x 11 x 16″ and weighs 24 lbs. It features a dual heating system of infrared radiation and convection, making it a natural choice for heating in large rooms. With tip-over and overheat protection, this heater also delivers on the safety aspect. It also has an in-built thermostat that allows for temperature ranging from 50 to 86 deg celsius.

What we love about Dr Infrared is the awesome humidifier that comes inbuilt into the heater. This prevents our poor skin from drying out during the harsh and dry winter season. Their heat output is also top range and has been shown to be 60% more powerful than other similar models of similar wattage. Dr Infrared’s advanced heating system enables greater heat production without using any more power with a high-efficiency blower. That sounds like energy efficiency to me.

In terms of the humidification capabilities, the water source is in the form of a water bottle that can be attached to the rear side of the heater. The maximum capacity of the water bottle is 500ml and humidification can last about 8 hours. The manufacturers have recommended that users only use this 500ml bottle that is provided but we have tried using a larger 1 litre bottle and it worked out fine as well. It doubled the humidification duration we got but try this at your own risk! 

In terms of ease of adding water, the humidifier is attached to the rear of the heater and it might be a little difficult to reach for when you would like to change water. You would also need to remove the whole humidifier unit and unscrew the bottle to add water. I would say it does get a little fiddly for the water change. Also, distilled water is required for the humidification according to manufacturer’s recommendation.

If there is anything we can change, it would be the front grate. Most of the heater is not hot to touch but the front grate does get quite hot after a period of usage. Therefore, it might not be safe for wandering children or pets.

Pros

  • Contains in-built humidifier to prevent drying of skin during winter
  • Blower is whisper quiet at 39 decibels
  • Easy portability with wheels
  • High and Low setting allows for better energy efficiency
  • Great safety features with tip over and overheat protection
  • Fast at heating up 
  • Can create up to 60% more heat than other models on the market

Cons

  • Front grate do get pretty hot to touch as the heated air circulates through there
  • Remote can only be used once you manually turn on the heater

What their fans love: “I love this little heater. Cranks out the heat. Quiet and easy to use. Looks good and operation costs are hardly a blip on my electricity bill”


Heat Storm Phoenix Infrared Space Heater

Best Low Wattage Space Heater For Large Rooms With High Ceilings

The Heat Storm Deluxe Mounted Space Infrared Wall Heater measures 13 x 3.63 x 16.5 and weighs only 7.5 lbs. It runs on a 1000 watt power and has a 1 year warranty. This is a combination heater using predominately infrared radiation but also comes with a fan to blow warm air into the room. However, the fan of this heater tends to get a little noisy.

It is designed for surface wall mounting so you do not need to cut out a recess in your wall. If you somehow changed your mind about installing this heater after purchasing it, you also have the option of attaching legs to it to make it a portable space heater. It also contains an inbuilt thermostat.

What we love about this heater is that it can be controlled via WiFi using the Smart Life app. Who needs remote control when everyone has a phone? The grills are also made of material that doesn’t burn the skin, making it suitable in a household with children and pets.

A limitation of this heater is the thermostat that is slow to react. Without a precise thermostat, the efficiency of this heater would be reduced as it cannot effectively regulate the temperature in the room properly. This results in poorer energy efficiency and increased energy costs.

Pros

  • Can be mounted or portable. 
  • Power cord can be concealed 
  • Features anti-trip technology
  • Compact and minimal design doesn’t add to clutter of house
  • Easy to clean and maintain
  • Can be controlled with WiFi

Cons

  • Thermostat is slow to respond
  • Fan can be noisy 
  • Only 1 year warranty

What their fans love: “I would give this 10 stars if I could. These heaters are lightweight, can be mounted on a wall. They can be picked up and moved at anytime, even while operating. I have had many a space heater, but not ever one as good at the three Heat Storms I have now.”


Frequently Asked Questions (FAQs)

Q: What is the best way to heat a large room and Heat the room up quickly?

A: There are numerous ways to accomplish this

  • Central heating with radiant floor heating
  • Get a high output electric space heater with high wattage
  • Use multiple space heaters
  • Keep the room well insulated and free of drafts

Q: Why is it difficult to heat rooms with high ceilings?

A: Hot air rises and cold air sinks. This is a law of nature that cannot be changed. Therefore, it can be difficult to keep the warm air where you want it (which is usually below at the living space). It will require a long time before the air in the whole room has reached a constant temperature.

Q: How to make a room with high ceilings feel cozy and warm?

A: Besides a space heater, you can eliminate portals of entry for cold drafts. These include leaky windows and walls.

Cheap ways to weatherproof them include weatherstripping, caulking and sealing walls. Visit this guide of ours where we provided video tutorials on the above.

However, the most effective way is to consider double glazing windows. They are mainly used for soundproofing but they are also great for weatherproofing. Read our guide here on how to choose the best soundproof windows.

Q: Why are ceilings usually 8 ft. tall?

At this height, the warmed air will still be relatively close to the living space. Also, most people will not be able to reach the ceiling in this case. With an 8 ft ceiling, windows can still be installed with sufficient spacing at the top and bottom of the wall.

Recap Of The Best Space Heater For Large Rooms With High Ceilings or Vaulted Ceilings

HeaterHeating EfficiencySafety
Rating
PortabilityNoise
AmazonBasicsGood ✅ 4.5/5Poor ❌Quiet (39 dB)
DeLonghi MicathermicGood ✅ 3.5/5Good ✅Silent (Almost 0 dB)
Lifesmart InfraredGood ✅ 4.25/5Good ✅ Quiet (39 dB)
Dr Infrared 968HGood ✅4/5Good ✅ Quiet (39 dB)
Heat StormModerate4.5/5Good ✅Moderate (50 dB)
Comparison of the Best Space Heater For Large Rooms With High Ceilings

Wrapping it up

Of the 5 products we reviewed, AmazonBasics Portable Eco-Smart Space Heater was our favorite heater for large rooms with high ceilings. Besides being a little bulky and harder to carry alone, it meets all the other requirement of being a good heating source in a large room with high ceilings. The Lifesmart heater is a close runner-up. Although it is quite light and portable but the 6″ power cord does hamper its placement a while bit.

Dr Infrared and Delonghi both had minor safety issues that might not be suitable in homes with pets and kids. However, if you don’t have pets or children at home, then these two heaters are definitely great options and worth a look.

Click here to get your space heater for large rooms with high ceilings now!

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