Top 7 Best Space Heater For 300 Square Feet (Reviews and Guide)

Winter is here, and the best space heater for 300 square feet could be the extra boost your medium-sized room needs to remain cozy.

Generally, long-term exposure to the cold indoor environment can inflict adverse health conditions. For example, you may suffer from joint pains, dry skin, hypothermia, and even heart problems.

Thankfully, the best space heater for 300 sq ft allows you to localize your heating element.  This implies that even if you have a central heating system, you can save on energy consumption by setting the built in thermostat to low heat power settings.

Besides, these portable space heaters are also ideal for use in multiple locations such as offices and bathrooms.

My Overall #1 Rated Pick

Comfort Zone Oscillating Space Heater
The heater is one of the most intelligent space heaters in the market. Its auto-temperature sensor can balance between room temperature and set temperature. In addition to its eco-mode feature, it also has an LED display and remote control to adjust the temperature.

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

However, choosing the right compact space heater for your room can be challenging. Luckily, this guide has all the information you need to make the best choice.

Read our picks of the best space heaters for 300 square feet room and some hot buying tips.


  1. ComfortZone Heat Ceramic Oscillating Space HeaterAll the Smart Features
  2. Honeywell UberHeat Ceramic Heater The Budget-Friendly Option
  3. Andily Ceramic Space HeaterPerformance in a Small Package
  4. Lasko FH500 Tower HeaterBest for the Tower Lover
  5. Dyson Hot + Cool Jet Focus AM09 Best Heater + Cooler Combo
  6. Lasko 754200 Ceramic Heater – For Reliable Focused Heating
  7. Vornado VH200Quiet Even With A Fan

Product Reviews

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

The space heater market has many models that might seem great for your room at face value.  Yet, you may end up disappointed after buying one.

Fortunately, we are here to help. Our criteria for choosing the best space heater for 300 square feet room is based on;

  1. Heating capacity
  2. Energy efficiency
  3. Noise level
  4. Safety features
  5. Size

With each review, you will learn what makes a great heater and how individual units compare. So, without further ado, here are the seven best space heaters for 300 sq ft to use this winter.

1. ComfortZone Heat Ceramic Oscillating Space Heater

Oscillating Space Heater – Ceramic Forced Fan...
  • FAST, EFFICIENT HEATING: Our oscillating space heater uses a forced-fan circulation to heat as it rotates from side to side, quickly & evenly warming an entire room while maintaining a consistent temperature.
  • ETL CERTIFIED & BUIT TO BE SAFE: In addition to being ETL Certified, this unit includes an overheat protection sensor and an automatic fail-safe that cuts power to the unit if it's accidentally tipped over.
  • OPTIMAL COMFORT: A digital thermostat prevents overheating & stuffiness, while an 8-hour timer with auto shutoff allows you to program the unit in advance to maintain a steady comfortable temperature.
  • LOWER ENERGY COSTS: Frostbite weather shouldn’t take a bite out of your paycheck. Our energy-saving ECO mode adjusts heat output to lower costs, while its ceramic build prevents producing too much heat.
  • LIGHTWEIGHT, PORTABLE POWER: This heating appliance is easy to move from room to room or take on a road trip. A remote control enables easy adjustment, while the stay cool housing helps prevents burns.

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

This oscillating heater is one of the most intelligent space heaters in the market. Its auto-temperature sensor can balance between room temperature and set temperature.

On eco-mode, the unit stops automatically when the room temperature exceeds the set level. Moreover, the unit comes with an LED display and remote control to adjust the temperature.

Housing this impressive feature-set is a robust and beautiful ceramic casing. For operational safety, the unit automatically shuts off when it overheats or tips over.


  1. Low energy cost with auto eco-mode
  2. Auto-shut sensor for safe operation
  3. Remote control for convenience
  4. Digital display
  5. Supplemental heat settings
  6. Fan circulation for even heat distribution


  1. Slightly louder than other models

This model is perfect for homes with children or pets with an attractive design, smart features, and built-in safety features.

2. Honeywell UberHeat Ceramic Heater

Honeywell HCE200W UberHeat Ceramic White Energy...
  • ENERGY EFFICIENT HEAT: The UberHeat Ceramic Heater offers powerful, 1500 watt heat in a compact, modern design. The Low setting does not require as much electricity to operate, so it is more energy efficient and a better option for saving energy.Voltage: 100120.0volts
  • EASY TO USE: Ideal for tabletop or floor placement, this powerful heater features 2 heat settings, an adjustable thermostat, a tip over switch, cool touch housing & overheat protection. Compact size is ideal for offices, on desks and tabletops
  • INCREASE YOUR COMFORT: Using portable heaters in your home can help increase comfort & supplement home heating needs. There is a range of Honeywell heaters covering personal, ceramic, fan forced, radiant and infrared to meet all your heating needs
  • SMART SAVINGS: Portable heaters are a smart and easy way to add warmth to any space. By turning down your whole house thermostat a few degrees and heating just the room you are in, a Honeywell heater can help you save money while providing soothing warmth
  • HONEYWELL QUALITY: Help improve heating & energy savings in your home, bedroom or office using a Honeywell portable heater.

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

Many first-time shoppers put their budget before everything else. If that is you, then you will love Honeywell’s UberHeat ceramic heaters.

You will get a compact heater with a modern design and safety features at a very affordable price. In addition, the unit’s small size makes it adaptable.

It offers two heat settings; first is 750 watts for quiet and energy-efficient operation. The second is 1500 watts for chilly winter nights. At high heat, though, the unit produces white noise.

Perhaps to keep the size small and the price low, Honeywell omits a temperature display. Better still, it has safety features like an auto tip-over switch, overheat protection, and cool-touch housing. This makes the UberHeat even more appealing for the price. 


  1. Compact enough for small spaces
  2. Adjustable thermostat heater
  3. Low operating cost
  4. Fan-forced distribution
  5. Comprehensive safety features


  1. A bit noisy on high heat setting
  2. Lacks a digital display for the set temperature

This electric space heater may not be your first choice if you can afford a unit like the Comfort Zone Oscillating Heater. For the price, however, few models have as much to offer as this one.

3. Andily Ceramic Space Heater

andily Space Heater Electric Heater for Home and...
  • SMALL HEATER MEASURES: 6.2" X 4.74" x 8.3" . Manual controls. Fully Assembled. Carrying handle for easy transport. Adjustable thermostat for comfortable warmth—ideal for home or office
  • THREE MODES HEATER WITH FAN: 1. High Heat (1500-watt), 2. Low Heat(750-watt ), 3. Fan Only. The power indicator light lets you know when it’s plugged in
  • CERAMIC HEATER ELEMENTS: Ceramic space heaters are fast to heat, produce abundant heat without open coils, and are long-lasting
  • SPACE HEATER WITH THERMOSTAT: The thermostat system can according to the thermostat setting let your room remain at a comfortable temperature. This heater can be used in a small area (such as warming your feet), meanwhile warms up your surroundings
  • FOR SAFETY: 1. An automatic overheat system will shut the unit off when the parts of the heater overheat. 2. TIP-OVER SWITCH will shut off unite when tipped forward or backward. 3. Power indicate light can lets you know at a glance that it’s plugged in. 4. ETL certified

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

At first glance, it is easy to dismiss this little infrared heater as meant for tiny living spaces. Despite its size, however, it packs a heavy punch.

Its dual heat settings of 750 and 1500 watts power rating can effectively heat your 300 square feet room. In addition, the infrared heater evenly distributes the warmth in the living space with the help of the fan.

The adjustable electronic thermostat helps you to adjust and control your room’s temperature. On top of being ETL listed, it’s cool-to-the-touch and has tip-over protection. 


  1. Compact and lightweight
  2. Decent performance
  3. Dual heat setting
  4. Adjustable thermostat control
  5. Commendable heat circulation from the fan


  1. Not suitable for damp places

The Andily Ceramic Space Heater is more than useful in small and medium-sized spaces. Even better, it provides reliable performance and parallel advanced safety features at an affordable price.

4. Lasko FH500 Tower Heater

Lasko 1500 Watt 4 Speed Quiet Bladeless Multi...
  • Portable: Features a high-reaching bladeless tower fan design for maximum air delivery with a small footprint, so it won’t take up much space
  • Multiple Speeds: Quiet fan speeds of 4 (high, medium, low, and super low), 3 heat settings (high, medium, and low), plus one heater/fan combination mode which simultaneously activates high heat and super low fan
  • Electronic Thermostat: AutoEco automatic electronic thermostat of bladeless fan allows you to heat the room you’re in and maintain comfort using less energy
  • Included Remote: Cooling fan has multi-function digital remote control with on-board storage allows you to operate the fan and heater functions, as well as oscillation, timer, and power
  • Built-In Safety Features: Tower fan features ceramic element, overheat protection, cool-touch housing, tip-over safety switch; Dimensions are (L x W x H): 12.5 x 12.5 x 41.8 inches

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

The Lasko FH500 infrared tower heater is the tallest, and depending on where you place it; it can also be the most space-efficient.

It will quickly warm up your large room to the set temperature and maintain it for as long as you want. Additionally, the FH500 includes an easy-to-navigate digital control panel with a matching remote control.

It has medium heat sweep settings and three heating elements to ensure that you can always set your desired temperature.

The auto-eco mode will help you enjoy better energy efficiency. To top it off, the FH500 has a built-in cooling feature to prevent overheating.


  1. Great design
  2. Convenient control panel and remote
  3. High heat output
  4. Three heat settings
  5. Auto-eco mode for maximum energy efficiency


  1. Unusual design can make it less adaptable to tight spaces
  2. Costlier than other heaters

The Lasko FH500 towers above the competition in stature and features. Not only does it provide all-season comfort, but it’s also tall enough to heat a high bed.

Look no further if you are looking for a powerful room heater that can double as a design piece.

5. Dyson Hot + Cool Jet Focus AM09

The Dyson Jet Focus AM09 heater sits pretty in the high-end space heaters category. It is compact, stylish, efficient, and doubles as a cooling fan making it an all-season appliance.

The portable space heater allows you to choose either a “focused” or “dispersed” airflow, as well as oscillation. Thus, you can use the infrared heater as a personal heater or to heat a large room thanks to the oscillation function.

If your budget is flexible enough, this electric space heater will give you consistent and steady heat. The exterior also remains cool to the touch while in use.

Like most, this portable heater comes with remote control for adjusting the temperate and timer.


  1. Striking design
  2. Both heating and cooling capabilities for year-round use
  3. Focused and dispersed airflow options
  4. Full, convenient remote control functionality
  5. Energy efficient 
  6. Infrared heat
  7. Two heat settings
  8. Runs quietly


  1. Expensive
  2. Overly reliant on the remote

The Dyson is the most powerful, portable room heater on this list. Above all, it doubles as a cooling fan, so you’re also sorted during summer.

6. Lasko 754200 Ceramic Heater

No products found.

The Lasko 754200 has been among the most recommended devices by critics since 2013. And today, it is still one of the cheapest and most space heaters you can get.

The compact heater warms up a large room quicker than most electric heaters in its price range. The electric heater produces a stream of hot air that warms the airspace more quickly.

As a result, it is perfect for heating a home office or bedroom, where the desk or the bed is the primary focus. Most importantly, it features overheat protection so you can use it for long periods without trouble.


  1. Affordable
  2. Reliable for space heating element
  3. Compact and lightweight


  1. Lacks several of the features from newer models
  2. Focused stream of heat that is not suitable for full-room heating

The 754200 has had positive reviews over the years because of its value for money. It is neither feature-packed nor attractive but affordable and works without gimmicks.

7. Vornado VH200

VORNADO HEAT EH1-0092-69 VH200 Vortex Heater
  • 3 Settings: 1500W, 1125W & 750W
  • Mechanical Thermostatic Temperature Control
  • Cool Touch Cabinet
  • High Gloss Finish
  • Safety Tip Over Switch

Last update on 2024-04-23 / Affiliate links / Images from Amazon Product Advertising API

Performance is a crucial consideration, and only a few units can outperform this heater. However, do not let its small size or the bland design fool you.

Simply power it on, and it will give out an instant temperature increase that builds evenly. Despite having a circulating fan, the VH200 runs quietly, emitting only a soft whir.

Couple that with its compact design; you can tuck it away in a corner and enjoy a warm and toasty atmosphere. The VH200 is also one of the safest infrared heaters for 300 square feet that you can find at its price range.

It features overheating and tip-over protection that immediately shuts it down if it falls over. In addition, its plastic shell stays cool to the touch, so you’re safe from burns.


  1. Reliable performance for the price
  2. Compact
  3. Runs quietly 
  4. Generous safety features


  1. Bland design
  2. It can be slow to heat a significantly cold space

There have been concerns with the airflow from the fan and the time it takes to heat spaces. Regardless, if your target is to heat a 300 square-foot area, it will undoubtedly serve you well.

Education: What You Need to Know Before Buying – How To Select Space Heater For 300 Sq ft Room

Whether you’re looking for a small space heater for office or home use, you need to consider a lot of factors.

So, before selecting the best space heater for 300 square floor space, it’s important to ask yourself some questions, including;

  • Will the heater adequately heat your space?
  • How costly will it be to use?
  • Is it too noisy to run when you are working or asleep?
  • How safe is the heater?

For more clarity, here are the top factors to consider in a space heater for your 300 square feet of coziness. 

  • Heater Type and Functionality

Different models for best Space Heater for 300 Square Feet

Generally speaking, space heaters come in different styles and shapes.  Yet, they all fall into heat sweep settings:

1. Radiant 

Radiant heaters like Lasko 754200, Andily Ceramic Space Heater, and Vornado VH200 deliver quick heat; hence are more suited for small spaces. 

2. Convection 

Heaters with convection heating capability like the Dyson Hot + Cool Jet Focus AM09 typically offer even, whole-room heating.

3. Fan forced. 

The more traditional fan-forced heaters use an internal fan to blow air over a heating element. For this reason, they’re the noisiest amongst the three.

Needless to say, picking the right space heater type is vital for effective and long-term performance.

  • Heating Capacity

If you are reading this guide, you have already determined the size of your target room. The space size is crucial because it directly impacts the efficiency and durability of your unit.

So How Can You Determine the Size of Your Room?

It’s always advisable to get the actual measurement of your room before buying a space heater. To measure the size of your space, simply get the length and width with a measuring tape. Then, find the product of the two measurements.

If your room is oddly shaped, say with an L-shape, divide it into definite squares and rectangles. Compute the areas of each space individually, and then sum up the results. 

To learn more about measuring your irregular-shaped room, watch the video below.

The Wattage Chart

The Wattage Chart shows the relation between the size of space and a heater's wattage

Apart from the space size, the number of rooms and ceiling height also matter in determining heating capacity. To know how many watts of electric heat you need in your room or office, multiply the area of your room by 10.

Modern houses have ceilings that are higher than the 8-feet average. So for every extra foot, multiply your area by the height and by a factor of 1.25.

For reliable, consistent heating of a room with average floor-to-ceiling height, a power rating of 2500 to 3500 watts is ideal. Only go lower if you are targeting a specific part of the space and would like to save on energy cost. 

  • Energy Efficiency

Like other appliances that produce heat, space heaters are significant energy consumers. To keep your electricity bill down, you must choose energy-efficient space heaters.

Ordinarily, best space heaters currently lack the standards to show efficiency levels like the EER ratings. Still, you’ll consume less power by choosing the right heater for your needs.

Extra features like eco-mode, adjustable thermostats, and programmable timers will also drive down your energy cost.

  • Noise Level

Like most electrical appliances, space heaters emit some noise during operation. However, some models produce more sound than others.

If you want your room to remain as quiet as possible, consider a non-fan-forced space heater. Radiant space heaters work well as silent space heaters for bedrooms and offices.

  • Safety Features

Avoid space heater fire by getting a unit with the necessary safety features

If not monitored, space heaters can become fire hazards. So, it’s crucial to consider safety when you’re out shopping. To curb fire risks, manufacturers always design heaters with safety features such as;

  • Cool-to-the-touch surfaces to avoid burns.
  • Auto timer to shut down the machine.
  • Tip-over protection to shut down the machine if it falls over.
  • Overheating protection prevents the unit from getting too hot.
  • You may also opt for an oxygen depletion sensor if you’re going for a natural gas heater for the basement.


Buying a space heater can be a demanding process, but we hope that this guide has given you some insights. If you still need clarity, our frequently asked questions below would be helpful.

  • How much does it cost to run a space heater?

Typically, models with the same power ratings will cost you roughly the same. 

Off-peak hours (10pm to 7am) are averaged at $17.5 cents/kWh, while peak hours (2pm-8pm) cost $30 cents/kWh. Of course, energy-saving features like the ones discussed above can be distinguishing factors.

You may also want to watch this video about more ways to save energy in your house.

  • How can you make a space heater more effective?

The effectiveness of your heater will depend on factors like the size of your space and room ventilation. For example, if your room gets too much supply of air from outside, your heater will strain to keep it warm. 

Also, if you have a ceiling fan, its reverse feature can be a boon in the winter when combined with a space heater.

When on, the fan will force the heated air around the heater upwards, equalizing the temperature around the room. Without the ceiling fan, warm air collects above the heater while cool air pools near the floor.

An overhead fan can help you to get the best out of your space heater for 300 square feet

  • Where can you buy a space heater?

Space heaters are common home appliances and are thus available in most stores. This is to say, it’s important to buy from authorized dealers with direct ties to manufacturers.

Granted, even the most reliable room heaters can develop complications. So do not reach for your wallet until you see a manufacturer’s guarantee or warranty.

All the links in our product reviews, for instance, will lead you to legitimate sellers. You can, therefore, forget the worry of landing a dud that will be cheaper upfront but cost you in the long run.

Wrap up

A space heater is a great way to keep your 300 square feet room warm during the cold season. With a guide as comprehensive as this one on best space heaters, you will undoubtedly find the best space heater for 300 square feet.

While all the models are good, just make sure you invest in a space heater that meets your needs.

Photo of author
Jesse Pinkman is a passionate HVAC professional writer who grew up repairing any home appliance on which he could lay his hands. He is responsible for ensuring that every article we publish is SPOT ON. When he's not in the office, he enjoys hiking, watching football, and spending time with his family.