Whenever winter is nearly approaching, you may realize that your house isn’t heated enough by your whole-house heater. The small rooms heat up rather quickly, but the large ones can definitely cause some troubles. Thus, the purchase of the best space heater for large room appears to be a good idea.

It gives a little boost to the home’s heating system, warming the air in the room. It’s a great solution as you don’t need to install it permanently and it’s definitely possible to get a budget-friendly and energy-efficient space heater.

If you try to search for a space heater on Amazon you will see how many different space heaters the modern market is able to offer. They all differ from each other by their appearance, size, and working principle in a drastic way. There are also a lot of space heaters that can make you feel like you’re sitting in front of a hair dryer. It makes it harder to choose the right option as you will obviously need a space heater that will warm the entire room fast and hassle-free. This way, we have picked five options, suitable for different needs, so you could find just the one you need. Additionally, our buyer’s guide will supply you with all the information that is necessary to be aware of before buying a space heater.

Space Heater for Large Room Reviews

Dr Infrared Heater Portable Space Heater

Dr Infrared Heater Portable Space Heater
This 1500-watt large room heater works as sun rays, by warming objects rather than air. Due to this, the heater is energy-efficient. With 13 x 11 x 16 inches of size dimensions, it’s smaller than many other models, but still can transfer heat to spaces up to 1000 square feet.
Thanks to the built-in electric thermostat, you can set the desired temperature from 50°F to 86°F.

It has a number of safety features: tip-over protection, overheat protection, and it’s also safe for children and pets as it doesn’t feel hot to the touch and doesn’t have exposed heating elements that can cause a fire. This heater also can work as an air humidifier retaining air moisture so you could avoid dryness in the winter.

Being supplied with a dual heating system, it optimizes the heat transfer up to 60%. It also features a remote control which allows changing the temperature, turning the heater on/off, and even programing your own settings. Thanks to the energy saving mode and automatic timer, the heater shuts off when needed.

This space heater is also easy to maintain as it comes with a removable filter that is easy to clean and replace.


  • The heater works very quietly.
  • It has an energy saving mode.
  • It’s made of high-quality galvanized steel so it’s quite durable.


  • The Dr Infrared uses a lot of electricity when the energy saving mode is turned off.

Lasko 755320 Ceramic Space Heater

Lasko 755320 Ceramic Space Heater
This tower whole room heater from Lasko fits neatly into tight spaces and takes minimal place with 7.2 x 8.6 x 23 inches of size dimensions. It works quiet and includes two settings — high heat and low heat. With the widespread oscillation, this heater distributes warm air throughout the whole room. It also features two safety features: overheat protection and cool touch.

This space heater goes fully assembled which means that it will be ready to work as soon as you take it out of the box — just plug it in the outlet, set the comfortable temperature, and that’s it.

The heater has an easy-to-read digital display with an LED indicator which allows you to adjust the heater’s 1500-watt ceramic heating element. You can select from a wide range of temperatures in Fahrenheit or Celsius. All the controls are located on top of the heater.

The Lasko 755320 goes with a remote control that features 6 buttons to let you set the heater’s temperature, timer, oscillation and more from distance. Besides, there is an in-built timer that lets select from 1 to 8 hours in 1 hour increments.


  • The heater includes a handle for room-to-room mobility.
  • It doesn’t use much electricity.


  • The heater beeps quite loudly every time you change a setting.
  • No removable filter so you can’t remove it to clean or replace.
  • It doesn’t shut off automatically when knocked or tipped over.

Cadet Com-Pak Twin 4000W Large Room Wall Heater

Cadet Com-Pak Twin 4000W Large Room Wall Heater
This large space heater from Cadet is wall-mounted so it allows you to be free of cords, doesn’t create a tripping hazard, and doesn’t use a floor space. It goes with a can for wall mounting, grill, and thermostat for hard-wired installation. With 16.5 x 19.5 x 13.6 inches of size dimensions, it won’t take too much space on the wall.

It features auto-shutoff thermal overload protection and a fan that dissipates the heat. Thanks to the dual coil elements, it warms up an area up to 600 square feet in less than 5 minutes. It heats up in the temperature range from 40°F to 85°F.

With 4000 watts at 240 volts, it’s one of the most powerful wall-mounted space heaters for large rooms.


  • The heater is designed without sharp edges.
  • It has a tough steel frame.
  • It remains cool to the touch during work.


  • There is no temperature readout display to know what temperature you are setting it to.

Lasko 5160 Ceramic Tower Heater

Lasko 5160 Ceramic Tower Heater
This large room space heater from Lasko contains an elongated ceramic element for extended warmth and the blower technology with penetrating air velocity. Thanks to the widespread oscillation, the warm air evenly distributes throughout the room. It has a cool-touch exterior and 1500 watts of power. It also features a digital read-out and an adjustable thermostat with an 8-hour timer which maintains the preferred temperature.

There are six control buttons on top of the heater and a multi-functional remote control. You can choose from three quiet settings: high (1500W), low (900W) and auto (thermostat controlled). It also goes with a built-in carrying handle.

This model is not among the most powerful indoor heaters for large rooms on the market as it warms up an area up to 300 square feet.


  • The 5160 has self-regulated automatic overheat protection.
  • It remains quiet during work.
  • Despite being small in size (8.5 x 7.2 x 23 inches), it warms a room pretty quickly.


  • The thermometer isn’t always accurate.

Duraflame 3D Infrared Electric Fireplace Stove

Duraflame 3D Infrared Electric Fireplace Stove
This model from Duraflme is one of those indoor electric heaters for large rooms that are designed to be a great decor addition with its 3D flame effect technology. It can boast with the realistic flames that dance on and behind the logs. This effect operates with or without heat and is adjustable: with the help of a remote control, you can set its brightness, speed, and color. The heater’s digital thermostat is adjustable as well.

This 5.200 BTU unit provides zone heating for up to 1000 square feet. The infrared technology works like sun rays, warming the space instantly, even in the large area. The infrared heating also reduces static electricity, unlike traditional heaters.

This heater uses infrared quartz to keep a natural level of humidity that maintains the air comfortable and not excessively dry.


  • It features overheat protection and remains cool to the touch when operates.


  • With 13.1 x 24 x 23.4 inches of size dimensions, it isn’t as compact as the other 1500-watt space heaters.

Buyer’s Guide

What is a Space Heater and Its Types

A space heater is usually a portable unit for heating a certain area. It isn’t designed to be the main source of heat as it’s usually used as an addition to the main heating system. Many heaters come with such features as an adjustable thermostat or timer for increased efficiency.

Space heaters can use electricity or such fuel like natural gas, propane, fuel oil, etc. However, nowadays, the space heaters are usually electric because heaters which burn fuel need a permanent exhaust.

Electric space heaters fall into several types:

Convection heaters. They work by passing electricity through a heating element. Such heaters usually have a simple and reliable design. They control the temperature with the help of built-in sensors. Besides, some of such models are equipped with the anti-dust filters, frost protection, and an emergency shutdown system. However, the convection heaters can dry air and burn oxygen. Plus, they have a fairly high level of energy consumption.

Infrared heaters. The hot wire emits infrared rays that heat up objects in the room, and then those objects give out their heat to the air which surrounds them. They cope with heating quickly, so consume less energy.

Ceramic heaters. They work with the help of a heating element which consists of metal and ceramics. Thanks to such an element, the heater doesn’t consume oxygen. The heat transfer is carried out by blowing the heating element with an internal fan.

How Much Electricity does a Space Heater Use?

To figure out how much energy the space heater will use (and how much it will cost) you need to find its wattage. It’s usually printed on the heater itself. If not, you will find it in the owner’s manual. The wattage will tell you how much electricity it’s necessary to power the heater.

Most heaters use approximately 1,500 watts, so let’s take this number as an example. This way, it means that the heater uses 1.5 kilowatts of power. Since the electric bills are measured in the amount of energy used per hour, it’s necessary to use a special formula: multiply the number of watts your heater uses by the number of hours you are going to use it. Let’s suggest you would like to use it for 6 hours per day.

1,500 x 6 hours = 9,000

Then divide this number by 1,000.

9,000 / 1,000 = 9

After that, multiply this number by the rate of your utility charges for electricity. Just, for example, let’s say it’s $0.29:

9 x 0.29 = 2,61

This way, the usage of an electric space heater for six hours during one day will cost you $2,61.

How to Avoid a Blown Fuse When Using a Space Heater

Just like any electrical appliance, even the best space heater for large room is a potential danger and can be damaging to you or your house if you don’t handle carefully. When you use a space heater, the wires can heat up due to overload, blowing the fuse. Especially when you plug more than one appliance in the same circuit. A blown fuse can have a devastating effect on your house so it’s necessary to take certain measures for preventing this issue.

So, how to prevent space heater from blowing fuse?

  1. Check the wires of your heater
  2. Check if there are any damages on the heater’s wires before using it. It’s forbidden to plug the heater if there is even the slightest damage to its wires.

  3. Unplug the devices when they are not in use
  4. The current passes through appliances even when they are not in use, creating a bigger load on the circuit. So make sure to unplug your devices when you don’t use them to reduce the load.

  5. Use protective devices
  6. You won’t be able to feel the smell of the heated wires or see the smoke during sleep. This way, you won’t be able to prevent an accident. However, if you install some protective devices, like smoke sensors, you will avoid such a situation. They will inform you about the danger.

  7. Add an extra outlet
  8. To avoid the circuits overload, add a new outlet for the space heater. It will prevent excessive pressure on your existing circuits.

  9. Do not use the extension cords
  10. It’s forbidden to use the extension cords for space heater as they aren’t designed for such a load. They can cause a fire as they heat up very fast under a great load.

  11. Get a space heater with safety features
  12. Modern heaters come with a bunch of safety features, such as an automatic shut-off (the heater shuts down automatically when overheats), the GFCI Plug (prevents electric shocks). It’s also recommendable to get a heater with a long sturdy cord which is able to bear the load.