Best Space Heater For Uninsulated Garage

A garage is a central place for DIYers or professionals to perform any woodworking workflows or repairing their fav car. Even on the cold winter days, you may find your garage the most suitable place to do any projects. 

Unfortunately, your working space becomes chilly and uncomfortable in the winter. Numb fingers or a layer of bulk cloth just impede your work. Yeah, you can find a ton of heaters in the market to boil the ice-cold condition of your garage. But not every space heater is not perfect to heat an uninsulated garage. Therefore, you should consider the heating efficiency, portability, and safety concerns before picking a heater. Indeed, it’s not easy to choose the best space heater for an uninsulated garage.

Regarding this, we researched and reviewed the top 5 heaters to add to your garage. So, continue to read to check our top picks. 

Our Top Picks

Best Overall: PELONIS Electric 1500W Oil Filled Radiator Heater

“Reliable, Portable, Safe to use, and quiet to operate, this space heater will be your best bait to warm up your garage efficiently.”

Best Commercial Heater: Dr. Heater DR966 240-volt Hardwired Shop Garage Heater

“With 6000 Watts of heating power, this electric heater can be your primary heat source for your uninsulated garage or workshop.”

Best-Portable: NewAir Portable Garage Heater

“This portable space heater generates enough heat to break the frigid condition of your 500 sq feet garage.”

Best for Smart Safety Features: Comfort Zone CZ220 Fan-Forced Ceiling Mount Heater

“The electric heater features a safety sensor switch which automatically shuts the unit off to prevent your heater from overheating.” 

Best Durable: DIMPLEX DGWH4031G Space Heater

“The heavy-duty garage heater is made of sturdy gauge steel coated with epoxy powder to resist corrosion, which adds longevity.”

Top 5 Best Space Heater for Uninsulated Garage

Top 5 Best Space Heater for Uninsulated Garage

Here is the list of best space heaters you can consider putting in your uninsulated garage to make your space suitable for working. 

01. PELONIS Electric 1500W Oil Filled Radiator Heater-Best Overall

As a mechanic or a carpenter, you know how challenging it is to complete a woodworking or car maintenance workflow on cold days. The numb fingers and the bulk layer of cloth are responsible for slowing down the working speed. Putting a heater to break down the frigid condition is the best way to bring back life to your garage or working space. And PELONIS Electric Oil-filled Radiator Heater will be the perfect choice to heat your uninsulated garage. 

Key Features

  • Multiple heating and temperature settings
  • 4- swivel Caster Wheels
  • Built-in safety feature included
  • Quiet operation

What Other Users Are Saying

PELONIS Heater gets numerous love from its users. It earns 4.5 out of 5 stars with 6050+ ratings. Efficient heating & variable heat settings, built-in safety features, and portability are some breathtaking features that convince consumers to buy it. 

Users of this heater highly praised its efficient heating capabilities. They are impressed with how the heater helps to keep them warm when the room gets unusually cold. Most users say it’s quiet and simple to use. They can set the temperature from 65-85 degrees and set a time on how long the unit will run. The best feature they love most is its remote controlling system. As a result, they don’t need to get up to adjust the temperature. 

The only thing that makes them annoying is an odor in the beginning as the paint or film burns off. 

Our Experience

Heat Evenly

This forced-air heater has three heating options (900W, 1500W, and mode) to produce enough heat you need. Besides, it has five temperature settings, and you can adjust the temperature from 65F to 95F. Indeed, you can customize the temperature according to your comfort level. 


A single inch of your garage will not remain unheated. The electric heater has 4 swivel caster wheels. In return, you can lug the unit around your working space and heat the area where you need it. 

Safe to Use

The electric heater features a built-in indicator light that lets you know the unit is on. Therefore, it includes an overheat protection feature and a tip-over safety switch. As a result, the heater will shut off automatically if it gets overheated. Due to the tip-over safety switch, the unit will turn off if it gets knocked over accidentally. 

02.Heater DR966 240-volt Hardwired Shop Garage Heater- Best Commercial Heater

For a large uninsulated garage, you need an industrial-grade electric heater to boil the freezing environment. And the Dr. Heater DR966 Commercial Garage Heater is what you need. The 6000W heater will keep your garage toasty by breaking down the ice-cold condition of your room. 

Key Features

  • Adjustable thermostat with High and Low settings
  • 5 Adjustable Louvers for to Direct Airflow
  • Include a dynamically 8-inch fan
  • Bracket included

What Other Users Are Saying

With 4.5 out of 5 stars, Dr. Heater gains a total of 1050+ ratings from the consumers. Maximum airflow with minimum turbulence and noise, better heat output, and easy installation are some awe-inspiring features that persuade users to get it. 

Most garage owners say the heater works well to warm their freezy workspace. Every mechanic claims it helps them keep the garage temperature between 70-75 degrees when the outside temperature is 30 degrees. 

Almost every user finds the instruction guide this heater includes terrible. Instead of following the manufacturer’s recommendation, they stick with the 30 amp breaker and 10-2 wire to install the heater effortlessly. 

Our Experience

Disperse heat evenly

An adjustable thermostat with High and Low heat settings allows you to set the temperature according to your desired level. Plus, it includes an 8-inch fan to offer maximum airflow. In other words, the fan distributes heat throughout your room to warm every inch of your space. On top of this, this heater also has five customizable louvers to direct heat toward your floors to boil the ice-cold condition. 

Durable & Require low maintenance

The heater has thermally protected, enclosed ball-bearing motors that are well-lubricated. It means the unit can resist dirt and debris, which requires minimum maintenance. Because of the well-lubed motors, the heater works well for a long time. 

03. NewAir Portable Garage Heater- Best-Portable

A portable heater will not be a bad option for your garage as it lets you warm every inch of the garage. THis NewAir Garage Heater is only 15 pounds. As a result, you can lug it around your working space and heat where you need. 

Key Features

  • Wide 500 sq ft coverage
  • Powerful 200 CFM
  • Durable stainless steel construction
  • Included wall mount

What Other Users Are Saying

With 530+ global ratings, NewAir Portable Garage Heater receives 4.2 out of 5 stars. The folk get it to their garage as it is safe to operate, can cover 500 sq feet optimally, and comes with a built-in thermostat.

Small garage owners just love to put it into their working space. Some users say that they got sick in the coldest part of their garage in the winter. But, this heater takes the chill off in about half an hour when the outside is about 30 degrees. 

However, people who have no ABC electric knowledge may have trouble installing the unit- they added. Apart from these, they found this electric heater a bit noisy. 

Our Experience

Warm Up to 500sq feet

This portable space heater has 5000 watts of heating power. It puts out 17060 BTUs which is enough to cover a 500-sq feet garage. So, you don’t need to worry about a frigid working space. 

Adjustable Louvers

Unlike other space heaters, the NewAir Garage Heater comes with adjustable louvers. With it, you can direct the heat to the spot where you work. Alternatively, you can fully open the louvers to disperse heat everywhere in your garage. 

Built-in thermostat

Its single pole thermostat helps you to control the temperature with ease. Now, you don’t need to hassle to warm your room by setting your desired temperature level. 

What kind of space heater is best for the garage

04. Comfort Zone CZ220 Fan-Forced Ceiling Mount Heater- Best for Smart Safety Features

What if the heater evenly heats your garage but shuts the unit off automatically when it reaches an unsafe temperature? Then, Comfort Zone CZ220 is here to fulfill your dream. It has a smart sensor to turn the unit off when it crosses the recommended temperature to prevent overheating. 

Key Features

  • Crafted from heavy-gauge steel
  • Louvers and a variable mounting angle direct airflow
  • Dual-knob thermostat
  • Built-in sensor switch

What Other Users Are Saying

Comfort Zone CZ220 manages to gain 1550+ ratings with 4.4 out of 5 stars from the customers. Durable construction, excellent heat output, and simple manual controls are some notable features that motivate the users to purchase it. 

The electric heater puts out excellent heat to warm a small garage. It produces 17000 BTUs which makes it ideal for those who have a three-car garage. Most garage owners are satisfied with the heat output it offers. They manifest it (the heater) helps them gain 70-degrees when the outside temperature is freezy (30-degree). Also, each user is happy with its sturdy construction. 

Our Experience


For ensuring longevity, it uses heavy-duty steel as its construction material. So, it can even stand up to sudden temperature drops and spikes. Indeed, the space heater is specially designed to use in harsh conditions. Because of its sturdy construction, it lasts for years to come. 

Targeted Heating

Include multiple louvers and a variable mounting angle. Because of them, the unit directs the heat towards the draft area or the spot where you work. In simple words, it warms the area you need. Plus, the fan-forced design helps to disperse heat evenly throughout your garage to convert it into a toasty space. 

Easy to Control

The unit has a dual-knob at the front. Using it, you can adjust the thermostat or turn the heater on or off quickly. Due to the manual controls, you will get the heat output according to your desired level with ease. 

05. DIMPLEX DGWH4031G Space Heater- Best-Durable

Do you look for a sturdy space heater that serves you for a long time? Then, Dimplex DGWH4031G will be your best trait. It is made with sturdy gauge steel coated with epoxy powder. In return, this heater can resist corrosion and gives a long-lasting life to it. 

Key Features

  • Includes a six-foot-long cord
  • Designed with heavy gauge steel to ensure longevity
  • Come with an automatic overheat protection
  • Made with thermostat control

What Other Users Are Saying

Dimplex DGWH4031G Space Heater gets 4.2 out of 5 stars and obtains 650+ ratings from its users. They (consumers) buy it because this unit is durable, provides better heat output, and is safe to use. 

Users find this space heater functional. They said they got tired in their garage to perform their regular workflow before installing it there. Now, they feel cozy & warm in their garage as the heater breaks down the ice-cold condition. It consistently keeps the room temperature above 70-degree when the outside temperature is only 30-degree. Moreover, they highly praised how simple it is to operate. 

However, some users claim that they fail to mount it too high as the temperature control is on the back of the unit. 

Our Experience

Safe to use

To operate the unit safely, it comes with automatic overheat protection. As a result, the heater will turn off automatically when it gets overheated. 

Provide reliable comfort

The space heater produces 4000 wattage of heat. It has a stainless steel heating element and a high-performance motor. It generates enough power and heat as well. On other hand, its propeller style fan distributes heat evenly to gain maximum warmth & comfort.

Factors to Consider Before Buying the Best Space Heater for Uninsulated Garage

Factors to Consider Before Buying the Best Space Heater for Uninsulated Garage

Take the following considerations into account before purchasing a space heater for your uninsulated garage. 

Heating Efficiency

First off, consider how efficient the heater is to warm your ice-cold working space or garage. Make sure you choose a space heater that comes with excellent heating power with multiple heat settings. As a result, you can set the temperature according to the desired level to gain maximum warmth. 

Adjustable Louvers

Ensure the heater you will pick comes with adjustable louvers. You can customize the louvers to direct heat towards the area where you need it the most. You can even fully open the louvers to distribute heat throughout your room to warm your entire garage. 

Adjustable Thermostat

The plus of getting a space heater with an adjustable thermostat is- you can set the temperature according to your comfort level. Therefore, you don’t need to hassle to turn the unit on and off. 


A portable space heater allows you to carry the heater wherever you go and warm the area. For example, the NewAir Portable Heater is only 15 pounds which lets you lug the heater around your room. 

Safe to Use or Not

You must consider whether a space heater includes safety features or not. Ensure the heater comes with a built-in automatic shut-off feature. It will turn the unit off when it gets overheated. Also, make sure the heater features a tip-over safety switch to shut off the heater if it knocks over accidentally. 


The durability of your space heater depends on the construction material it uses. In terms of durability, we recommend you pick the DIMPLEX DGWH4031G Space Heater. It uses heavy-duty gauge steel as its built-in material, which increases the lifespan of the heater. 

Frequently Asked Questions: 

What kind of space heater is best for the garage?

An electric oil-filled radiator space heater will be best to heat your uninsulated garage. It heats the object and people directly to warm your space quickly compared to other space heaters. Regarding this, you can go for the PELONIS Electric 1500W Oil Filled Radiator Heater to heat your garage evenly. 

Will a small space heater warm a garage?

Yes, a small space heater, especially the radiant heater can warm your garage as it heats the object directly. Also, a fan-forced heater can heat your garage evenly. 

Is it dangerous to use a space heater in a garage?

Propane or gas space heaters carry the highest risk. They can cause fire hazards in your space if you use a propane space heater & there is flammable stuff near the heater.

How do you keep an unheated garage warm?

Using a space heater is the best way to keep your unheated garage warm & toasty. 

Final Verdict

Space heaters are an excellent way to heat your uninsulated garage when the outside temperature is below 30 degrees. They help you to keep your working space warm & toasty and let you complete your project on time. 

Above, we reviewed the top 5 best space heaters for your uninsulated garage. All of them are functional, include safety features, and distribute heat evenly to break down the icy condition of your working space. Among them, we recommend the PELONIS Electric 1500W Oil Filled Radiator Heater most. It provides radiant heat to warm your space quickly. Plus, it comes with a remote control to let you operate the unit without leaving your working spot.

However, you can pick any space heaters from the above list according to your personal choice. 

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