Looking to heat a huge workshop?
The best torpedo heater that I could find was the Mr. Heater F270385. It can heat around a 5000 square foot space and is rated for 210,000 BTUs.
If you have a smaller garage or workshop, then Mr. Heater 35,000 BTU is going to be suitable.
Below you’ll find the best diesel, multi-fuel, and kerosene torpedo heaters.
Let’s get started.
Our Top Picks
Best Torpedo Heater
- Fully-enclosed motor
- Heats up to 5,250 square feet
This torpedo heater is a beast!
What’s great about this torpedo heater is that it’s not only a kerosene heater, it also takes diesel 1 and 2, home heating oil, and JP-8.
You’ll have a variety of fuel options to choose from so you can decide on what’s cheapest for your workshop.
The powerful fan within this forced air heater will spread everywhere in your workspace or garage.
Enjoy 210,000 BTUs of forced air power that is suitable for up to 5250 square feet.
This torpedo heater is also equipped with overheat safety sensors should it overheat while you step away for any reason.
What I love most about this heater is that it has oversized wheels that let you move it to wherever you need it to be with ease.
If it’s hot, the handle on the side will still allow you to tow it away for storage without worrying about being burned.
The sides also have cord storage and a power indicator light to let you know if it’s running or not.
A 14-gallon tank will be enough for 8 hours of heat, and you can use the adjustable thermostat for your preferred temperature.
Some downsides of this heater are that the price is a bit high compared to other alternative options.
Some people also had issues with units being dead on arrival and poor customer service.
Still considering the downsides, over other torpedo heaters I’ve reviewed, this one had the largest heat output and plenty of happy customers.
The handle also makes it easy to carry around and makes it super safe once you want to get it into storage.
If you’re ok spending a pretty penny on a torpedo heater that will last and don’t mind using diesel or kerosene, this is the best torpedo heater I could find for large spaces.
If you’re looking for smaller options, then check out Mr. Heater’s 35,000 BTU which is meant for smaller spaces.
- High-output fan
- Adjustable thermostat
- Overheat safety shut-of.
- Hard to ignite
- Failure to light codes
Best Propane Torpedo Heater
- 10-ft. hose and regulator
- Quiet burner technology
If you’re after the best propane torpedo heater, the Mr. Heater F271400 is a tough option to beat.
What I love most is that it has up to 170,000 BTU heat output which is far more than any electric heaters that I found on the market.
This propane forced air heater is capable of heating up to 4250 square feet, keeping you comfy all winter long.
It’s lightweight, which is a benefit over the massive torpedo heater that came in first.
If you need a lightweight option that you can throw in the back of your truck, this option is great to consider (it also costs quite a bit less).
On the lowest setting, a 100lb tank can run for 17 hours straight. It’s rated to use 5.8-7.9 lbs of propane per hour, so be mindful of your usage.
The handle on the top will make it easy to move even when the unit gets hot.
With its quiet burner technology, you won’t have to suffer from a loud forced air heater like other units.
When using this product, some purchasers mention that this unit caused an annoying vibration which can be bothersome.
If you’re doing work that requires focus and attention, you may want an electric heater instead that creates less noise.
Others also had problems with keeping a uniform temperature. This can be a symptom of your gas tank getting low, though.
I love most that it’s capable of heating a huge space and is a bit quieter compared to other units.
This unit also costs quite a bit less and will still be able to keep up with medium to large workshops with ease.
- High-temperature limit switch
- Heavy-duty handle
- Quick assembly
- Annoying vibration
- Doesn’t maintain a uniform temperature
Best Kerosene Torpedo Heater
- 125,000 BTUs
- Built-in air pressure gauge
- Heats up to 3,125 square feet
Whether you need to use kerosene or diesel, the Heatfast HF125K kerosene heater is capable of heating up to 3125 square feet.
I like that you can also choose to use heating oil or even jet fuel should you happen to work in a hangar.
With a full tank of gas, you should get up to 11 hours of output.
This unit has a kerosene tank that you fill, unlike other units that use a standalone tank. This makes it easy to use if you don’t have a kerosene or diesel tank laying around.
This kerosene heater comes with an LED diagnostic panel making it easy to diagnose any issues should anything go wrong.
It also comes with a fuel gauge and has handles on the side to make it easy to carry around.
The front has pullout support and it has 10-inch wheels to make moving it around easy.
It takes 5 minutes to assemble and you’ll be able to heat your workshop in no time flat.
One downside is that this unit is a bit loud compared to other kerosene torpedo heaters.
It also doesn’t come with instructions on how to use the safety guards that come with it.
Considering the downsides, this fully capable kerosene heater is sure to please.
Compared to the option that came in frost, it’s a very similar model and costs almost half the price.
- Easy to transport
- Includes 1 forced air heater
- Smart diagnostics digital readout
- No instructions for safety guards
Best Diesel Torpedo Heater
- 175,000 BTU
- Runs up to 9.5 hours
- Provides heats up to 4,300 square feet
If you’re after 175,000 BTUs of pure power, this diesel torpedo heater is for you.
What’s great about this option is it not only takes kerosene and diesel, but you can choose from a range of heaters from 45,000 BTU to 215,000 BTU depending on how large your workshop is.
It’s made out of steel, which will last when you’re transporting it to and from your desired location.
The 175,000 BTU unit is capable of heating up to 4300 square feet, which is suitable for a large space.
Start-up is easy and even has a digital thermometer to help you control the heat.
The bottom has wheels and it has a handle for easy moving if the unit gets hot.
You’ll be able to monitor how much fuel is left in the tank by the fuel gauge, it also comes with a pressure gauge to monitor its performance.
Some people have complained that the thermostat leaves something to be desired on this unit. Others also mention that compared to other torpedo heaters, this unit is a bit loud.
If you’re after a heavy-duty diesel torpedo heater, this one is going to be hard to compete with.
The handle and wheels make it easy to transport and are great for anyone who’s on the go.
It’s made for extremely large spaces, so don’t make the mistake of buying an oversized heater.
This way, you’ll save on diesel costs as the unit won’t be overworked.
If you have a smaller space of around 2000 square feet, the Dyna-Glo Forced Air Heater is a great alternative option.
- 5-Point safety system
- Unique air pressure gauge
- Built in thermostat
- Very loud
- Strong smell
Best Multi Fuel Torpedo Heater
- 80,000 BTU
- 26.9 pounds
- Heats up to 1,900 square feet
Looking for multi-fuel torpedo heaters?
This unit is compatible with the following fuel types: K1 Kerosene, Diesel #1, Diesel #2, Fuel Oil #1, Fuel Oil #2, Jet A, and JP-8.
While it is capable of using all of those fuel types, be aware that the manufacturer does suggest that kerosene will be the best performance out of the bunch.
I love that this unit is much more compact than other forced air heaters I’ve reviewed on this list.
It’s going to be great for smaller workspaces of around 1900 square feet.
This multifuel heater also comes in a variety of different BTUs, if you have a smaller space, the 50,000 BTU unit will do just fine.
The larger units from 135,000 BTUs and up also offer a handle and wheels, which you’ll have to sacrifice if you do go with the smaller units.
While the bigger units come with a handle, you’ll still be able to rely on the heavy-duty grip on the top to transport this heater (even while it’s hot).
The thermostat allows you to control the temperature and the fuel gauge will let you know when it’s tin to fill up the tank.
One benefit this torpedo heater has over others is the easy-to-access chamber.
If you end up having problems with your heater, then you can easily access the motor chamber.
Some downsides of this product are that it has some difficulty with pressure and some users notice a strong smell coming from the product.
Others also had some issues with start-up ignition.
While some did have issues with these heaters, most others were in love with how easy this multi-fuel torpedo heater was to use.
Choose the right sized option for your workshop and you’ll have no issue staying warm this winter.
This unit may be a bit oversized for most garages, and for that, the Mr. Heater Propane Forced-Air Heater is a great alternative.
- Exclusive run time fuel gauge
- Comfort control thermostat
- Little to no assembly
- Hard time adjusting pressure
- Strong smell
- Start-up issues
Best Budget Torpedo Heater
- 35,000 BTU
- High-output fan
- Heats up to 800 square feet
Have a smaller garage or workshop? This budget torpedo heater is right for you.
It comes with 35,000 BTUs of heat, which is enough for an 800-square-foot space.
You can hook it up directly to a propane tank, and you won’t need to fill it up with fuel. It runs for up to 12 hours.
What I love most is that you can enjoy the 1-year warranty that all the other heaters on this list fail to offer!
The top also has a handle so you can easily move it around your garage or workshop even when it’s hot.
You’ll want to be careful when purchasing a torpedo heater as getting the right sized unit is important, as larger units can suffocate the room with far too much power.
The problem with a unit like this in a smaller space is that it’s going to need proper ventilation otherwise you may suffer from the fumes making the space uncomfortable.
If you’re ok without having safety features like an electric heater and are going to keep an eye on this propane torpedo heater, it’ll be a great alternative option compared to even the best electric heaters on the market.
If you have a larger space, you should consider the Dyna-Glo Forced Air Heater which is capable of heating around 2000 square feet.
- 10-foot hose and regulator included
- High-temperature limit switch
- 20-pound propane cylinder not included
- Blower noise is high
- Emits fumes
Best Alternative Option
- 8 inch fan
- Heats up to 600 square feet
Not everyone wants to deal with fumes, gas, and torpedo heaters. That’s where electrical heaters come in.
With its 240v single phase 3000/6000W of power, you’ll be able to heat up to a 600 square foot area without any issue.
The benefit of an electric heater over forced air is you won’t need to worry about ventilation as they don’t rely on fuel to run.
Considering they don’t use combustible fuel, electric heaters also don’t pose a carbon monoxide risk as well.
This heater can be mounted on your wall, making it fit in even the most cramped workshop.
I love the adjustable louvers so you can point exactly where you want the heat to go.
The 8-inch fan works day and night to provide you with maximum airflow so every inch of your workspace is heated evenly.
One downside of this heater is that it works on 240v. You’ll either need to have it hardwired to your electric system by a professional or get a 240v outlet installed.
Another downside is that electric heaters are not as efficient compared to combustible fuels (meaning you will have to pay more to use it over the long run).
If you already have a 240v outlet, then you won’t have to incur any additional costs. You do also get the ability to wire into an additional thermostat to control this unit.
If you’re looking for a no-fuss option, then electric heaters can be a great alternative to forced air heaters.
You won’t have to worry about fuel and it can heat up to 600 square feet, perfect for large garages and workshops.
You won’t have to worrying about overheating your space, either.
- Ceiling and wall mounting bracket included
- Easily installed
- Minimum noise
- Power cord not included
- Inconsistent thermostat
- Not enough heat for large spaces
What is a Torpedo Heater?
A torpedo heater is a forced air convection heater that uses combustible fuel and a fan to spread heat.
The benefit of torpedo heaters over others is that they’re portable and easy to stow away in the back of your truck.
You can find torpedo heaters that use all kinds of fuel, but the most common fuel that forced air heaters to use are propane, kerosene, and diesel.
You’ll need proper ventilation to use a torpedo heater as they generally don’t have oxygen depletion sensors or tip-over protection.
They are NOT meant to be used with children around as they don’t have tip-over protection and may have fuel within the heater itself.
Some torpedo heaters have a built-in fuel tank while others require a separate fuel tank for usage.
You’ll find that torpedo heaters also come with a plug, this is for the fan to operate. Sadly, you will need to have electricity to use all the forced air heaters on this list.
What to Look for in a Torpedo Heater?
Torpedo heaters are measured in BTUs or British Thermal Units.
If you’re trying to heat a two-car garage, then most forced air heaters are going to be too powerful. You’ll want to look into a 240v heater as they’re normally the perfect size.
You’ll find that the largest torpedo heater on this list is capable of handling over a 5000 square foot space at around 210,000 BTUs.
You can use this BTU calculator to find the exact size heater you’re going to need.
It’s vital that you buy the right sized unit as too powerful can overheat a room and underpowered is not going to be sufficient enough.
The size of the room and climate will also affect the size unit you’ll need.
When buying a forced air heater, you’ll have many different fuel types to choose from.
Kerosene can be hard to come by, and propane is normally the cheapest option out of the bunch.
The good thing about forced air heaters is that many of them are multi-fuel.
You can buy a kerosene/diesel heater and you’ll have the flexibility of whatever fuel you’re able to get.
A handle is important, especially if you plan on taking your forced air heater with you.
Wheels are also going to be required if you plan to take your heater around your workshop.
Remember, they get hot, so you won’t be able to move them without a handle and wheels.
Smaller units normally have a handle on the top, but they can still get hot if you let them run for a long time.
If you know you’re going to be on the run, then it’s better to find a heater with a handle and wheels.
Torpedo heaters are not going to be silent.
If you’re going to need to stay focused and are bothered by loud noises in the background, then an electric heater may be a better option for you.
Variable Heat Settings
While the “thermostat” that forced air heaters offer aren’t true thermostats, they still allow you to control how much fuel is being used up.
The more fuel it uses, the more heat output your device will have. This is important so you can control how hot it gets in your workshop.
You may find that the highest setting gets too hot and the variable heat settings will make it easier to use.
While not all torpedo heaters have a fuel tank, some have a built-in tank. This makes it easier to lug around if you’re on the go, as you won’t need to take a fuel tank with you.
Depending on what you need the heater for, a larger tank means a longer run time. If you’re going to be away from a fuel source for a long period, look into a unit with a large tank that can last over 12 hours of run time.
Are Torpedo Heaters Safe?
Combustible fuel will take oxygen out of the atmosphere and create carbon monoxide.
If you aren’t using your torpedo heater with proper ventilation, like a cracked window or door open, then they will NOT be safe to use.
The other safety issue you’ll have to deal with is carbon monoxide buildup.
A carbon monoxide alarm in your garage or workspace is going to be necessary if you plan to use a torpedo heater indoors.
Never use a torpedo heater indoors and always use it in a ventilated space. If you plan to use it in a garage, then open the garage door at least 2 feet.
It may seem counterintuitive to leave the windows or doors open, but at least you won’t be removing all the oxygen in your workspace.
Always take the proper precautions when using any heaters, fuel, or electricity.
Big workshops will need large forced air heaters.
For that, I recommend the Mr. Heater F270385 with its 210,000 BTUs of power, enough for over 5000 square feet.
If you have a smaller garage, then Mr. Heater 35,000 BTU is suitable for around 800 square feet.
Always use these heaters with proper ventilation and a carbon monoxide alarm. If you want to use a heater for your garage, then consider getting a 120v garage heater instead.