Best Space Heater for Large Rooms ( 2020 Reviews + Buying Guide)

So here is the truth...

Most fall and winters months can be really harsh. If you are searching for the best space heater for large rooms on flexoffers to supplement the heat from your central heating system, you have come to the right place.

Could be that your house or apartment is not well insulated; I know mine was not at some point and it would get extremely cold and drafty.

I was not aware of it but..

Whenever we used the conventional heat from our central heating system, for some reason, the four of us (my wife, the boys and I) would wake up with dry or parched throats.

I knew that I had to get an indoor space heater.

One evening after work, I got on to my laptop and started searching for a space heater that would work for us.

...Kilowatts, infrared, forced air, quartz, radiative, convective, micathermic..

All these variables were just too confusing.

I just wanted something to keep my family warm.

The purpose of this article is to guide you from NOT going into the same unending spiral on the internet as I did.

It is simple really, if you are looking to supplement heat from your main source, find a space heater with good reviews, purchase it, plug it in, get warm. That's it.

Space Heater Types

The easiest way to explain radiant space heaters to you is to say they transfer heat to the person or object that is directly in their path. So if you are moving around in your indoor space, you may not experience the heat from such a heater in some areas.

They do not heat the air in the room. Since they do not blow air, such heaters would work well even for those with allergies.

I should also mention these heaters are relatively quiet. Radiative heaters slowly warm your space, and keep it warm even long after they have been switched off. The most common of such heaters are the infrared space heaters

Convective Space Heaters

These heaters have fans that blow air through heating elements then circulate this warm air into your space. You can be sure these fans make some noise, so this is not a heater you would want in your child’s room as they try to sleep or just about anyone who doesn't do well with noise. 

They are ideal if you are looking to raise temperatures fast.

Ceramic heaters fall in this category. These heaters are popular, so you will find variety and budget choices.

Micathermic Space Heaters

If you suffer from asthma or any allergies, this type of heater would work for you. They are fanless, quieter than many other space heaters and do not circulate any dust.

These heaters are a combination of radiative and convection heating systems. Most of these heaters have a wider base so they can be placed on the floor or even hang on a wall.

Top 5 best indoor heaters for large rooms


This USA engineered and designed space heater is a combination of radiant and convection systems but instead of having a fan it has a high velocity low noise blower. It heats up a room fast.

It is safety certified in USA and Canada by the Underwriters laboratories. If you are looking for a heater that is safe around children and even pets, the Dr. Infrared Heater should work for you.

Its programmable modes are auto, low and high and come with an energy saving mode that should transfer directly to savings on your electric bill. Its thermostat regulates the heater in on and off cycles to ensure it maintains the temperature you set.

I should add, if your previous heater made your skin feel dry, you will not experience that with this heater because it doesn't blow out hot air getting rid of moisture in your room.

Getting back to its safety features, it comes with the tip over safety protection and the auto shut off. Of course not all heaters can be fully fire proofed but it should give you some peace of mind to know that this unit doesn’t have its elements exposed.

The risk of it starting a fire is almost nonexistent. I think you will also like the fact that it looks like a piece of furniture that could go well with your home decor.

What we like:

  • Heats up a large space fast
  • Tip over protection
  • Overheat protection
  • Good design
  • Remote control capability

What we don't like:

  • You will definitely hear the blower noise


This is a 1500 watt heater that comes already pre assembled so you don't have to worry about putting it together, just plug it in and get warm. It is about 23 inches off the ground, quiet and heats up any room quickly that is why we recommend it for a nursery.

Built in electronic thermostat that allows you to set your preferred temperature and the space heater will go on and off to maintain the temperature you had set.

The heater is a lightweight so its portability should not be a concern. At the back of the heater is a neat carry handle, you can carry the heater with you from one room to another with ease.

Comes with a multi function remote control, of course for your convenience. After being on for about 8 hours, this ceramic heater will automatically go off.

The oscillating feature means that it doesn't just warm one part of the room but can warm across your space.

What we like:

  • Automatic overheat protection.
  • Easy carry handle.
  • Oscillation.
  • Programmable thermostat.
  • 8 hour auto timer.

What we don't like:

  • Doesn't have tip over turn off feature.


If you are looking for a heater for your bedroom, the Delonghi oil filled full room heater should work for you. This is one silent appliance.

It heats rooms quickly by convection with its thermal fins providing maximum heat. It has 3 heat levels, low, medium and high. Its heating elements are fully enclosed providing you this very important safety feature against possible fire.

On its control panel you will also notice an ECO button for energy saving. It is movable from one point to another in your room at your convenience as it has wheels on it.

It is also light so portability is not a problem even if you need to move it from one room to another. It comes with a programmable timer that you can set which hours you prefer the heater to go on and which ones to go off.

On safety, I should mention that it has the thermal cut off function so in case the heater starts to overheat, it will automatically cut off. This heater also has a modern design that would look good in any home.

What we like:

  • Extra wide feet to prevent tipping off.
  • Rust resistant durable construction
  • Fully enclosed heating elements.
  • Good modern design.
  • Fast heating.

What we don't like:

  • Crackling sound when the oil is heating up.


This 1500 watt tower ceramic heater from Lasko has 3 oscillation settings: 90, 170 and 360 degrees. So depending on the room radius you would like to get heated, you can choose any of the 3 settings that would be appropriate.

With a head screwdriver, the base assembly is easy. Being a ceramic heater, it will not heat your room as fast but it will keep the heat for longer even after shut off.

It has a filter at the bottom as it sucks in air which can be easily cleaned. It is recommended that you clean the filter at least every 2 weeks or so. This heater is portable though a bit awkward to carry around as it is top heavy. The remote should work well for you to adjust the heat as well as the oscillations.

What we like:

  • Oscillation feature.
  • Quieter than most heaters.

What we don't like:

  • For a tower heater sadly does not have tip over protection.


This space heater may look physically small but it really goes to town keeping your large indoor space nice and toasty. It operates on vortex technology and what this is is circulation of warm air evenly across your room while still being quiet. It is lightweight, easy to carry around your home or office.

To control energy consumption and heat output, this heater comes in 3 heat settings. They are 750 watts, 1125 watts and the maximum 1500 watts. Even at these heat levels, the heater remains cool to the touch.

You will be glad to know that this heater is USA safety tested and certified. Comes with tip over protection and even when the front of the heater that allows for warm air circulation is obstructed it will go off.

What we like:

  • Small but powerful.
  • Tip over protection.
  • Safety tested.
  • Automatic safety shut off
  • 5 year warranty.

What we don't like:

  • Strong “new” odor when you have it on the first time. It goes away after some time.

Space Heaters Safety & Precaution

Here is a sad fact..

Each year, over 70,000 home go up in flames due to negligence when using home heating equipment. Apart from the property damage into the millions of dollars, there are severe injuries and even deaths.

These tips will help you keep your home warm but more importantly safe:

  • Install smoke detectors especially in your bedrooms and inspect them regularly.
  • Read the manufacturers manual and use your heater as instructed.
  • Keep your heater away from areas that are highly trafficked to avoid tripping.
  • Keep your heater away from any cloth or any material that could catch fire.
  • Connect your heater directly to the wall power outlet. Avoid extension cables. Most will melt and start a fire.
  • Always unplug your heater when not in use.
  • Do not place your heaters on furniture and carpet that could overheat and start a fire.

Popular Brands In The Market:

  • Lasko
  • De’Longhi
  • Honeywell
  • Mr. Heater
  • Vornado
  • Lifesmart
  • Duraflame

Best Space Heater for Large Rooms: Buyers Guide

Here are some factors to consider...


You will notice that most heater manufacturers recommend 10 watts of heating power for a square foot of living space. So a 1500 watt heater is ideal for 150 square feet of room. But most heaters for large indoor spaces are 1500 watts and have worked in rooms bigger than 150 square feet. Do not go for a heater that is either too big or too small. Remember a bigger heater will consume more electricity and a small one will not do the heating job.

Heater Features to Look For:

  • Programmable Timers: Most recently, many heaters come with this feature. It saves you a lot on your utility bill. Better yet, you can set your heater to go on right before you get home from work and even go off when you leave for work in the morning.
  • Portability: Since many space heaters are actually bought on the premise you can move with it from one room to another, you need a portable one. Should be lightweight, with wheels if possible and friendly handles.
  • Multiple Heat Settings: You want a space heater with low, medium and high heat settings. Makes for ease of use.
  • Eco Mode: Many models nowadays come with energy saving mode saving you dollars on your utility bill.
  • Remote Control: You definitely want a space heater with a remote so that you can make any necessary adjustments from anywhere in your room.
  • Tip-Over off Switch: This is a crucial feature especially if you have kids or pets in your home. Your heater should automatically go off when knocked over.
  • Overheat Switch: This is yet another necessary safety feature. Automatic switch off when a predetermined temperature is reached.


Fan operated space heaters are noisier that the fanless heaters. If you are looking for something silent probably for a nursery, you may want to consider the micathermic heaters

Space Heaters FAQs:

Do you save money with space heaters?

Space heater are cheaper to run compared to your conventional central heating system which when turned on heats up your whole house even in those areas where you do not need the heat. So the long and short of it, is yes you will save money when you use a space heater efficiently.

Can you leave a space heater unattended?

Do not leave your space heater unattended. This is even more crucial in homes with young children and pets. You also do not want to connect your space heater in an area where there is a lot of foot traffic, someone may tip it over.

Can you leave a space heater on all night?

It is not advisable to leave your heater on through the night. When you are going to sleep, simply switch off your space heater as precaution.

Do space heaters run up your electric bill?

A space heater is just like any other electric equipment. Your electric bill is a factor of consumption. So if you have a higher wattage space heater or your frequency of use is higher, all these play a part in your utility bill. Ensure you get a heater with energy saving mode.

Is it more expensive to heat with gas or electric?

Generally gas tariffs are cheaper than electric units. In some areas, people do not have metered gas and may opt for electric powered heaters. There are pros and cons to both gas and electric powered space heaters. So this will be a matter of preference as well as availability.

Can you get carbon monoxide poisoning from an electric heater?

Electric space heaters do not burn fuel. You are not at risk of any carbon monoxide poisoning.

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