I spent three winter seasons freezing in my uninsulated garage workshop before I finally bought my first torpedo heater. That single purchase changed everything — I went from numb fingers in 30 minutes to working comfortably all day. If you are reading this, you probably already know that regular space heaters do not cut it for garages, barns, or job sites.
Torpedo heaters (also called salamander heaters or forced air heaters) are the heavy hitters of the heating world. They use kerosene, diesel, or propane to blast hot air into large spaces, warming areas up to 5,000 square feet in minutes. Our team tested and compared the best torpedo heaters on the market to find which models actually deliver on their BTU promises.
One thing I learned the hard way: not all torpedo heaters are created equal. Some run whisper quiet, others sound like a jet engine. Some run 14 hours on a single tank, others need refueling every 4 hours. We dug through thousands of customer reviews, compared specifications across 8 top models, and read what real farmers, contractors, and garage warriors had to say. Here is everything you need to know to pick the right one for your space.
Table of Contents
Top 3 Picks for Best Torpedo Heaters (August 2026)
Best Torpedo Heaters in 2026
| Product | Specifications | Action |
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Mr. Heater 60K BTU Quiet Propane
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Mr. Heater 125K BTU Quiet Propane
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Mr. Heater 210K BTU Kerosene
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DEWALT 80K BTU Kerosene
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Master 60K BTU Propane
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Reddy Heater 80K BTU Kerosene
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VEVOR 175K BTU Kerosene
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GASLAND 125K BTU Propane
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1. Mr. Heater 60,000 BTU Quiet Burner Technology Forced Air Propane Heater
Mr. Heater 60,000 BTU Quiet Burner Technology Forced Air Propane Heater
60,000 BTU
Propane
1500 sq ft
14 lb
14 hr runtime
Pros
- 50% quieter than standard propane heaters
- Variable 30K-60K BTU output
- Runs up to 14 hours on 20 lb tank
- Heats up to 1500 sq ft
- Continuous ignition
Cons
- Requires electrical source to run
I have used this Mr. Heater model in my two-car garage for two winters straight, and it is the one I recommend to most people first. The Quiet Burner Technology (QBT) is not just marketing spin — it genuinely cuts the noise in half compared to my old torpedo heater. I can hold a conversation at normal volume standing 10 feet away from it.
The variable output is the killer feature here. You can dial it down to 30,000 BTU for a smaller space and squeeze up to 14 hours out of a single 20-pound propane tank. That is rare in this category. Most torpedo heaters run full blast or not at all. At 60,000 BTU on high, it warms my 400-square-foot garage from 35 degrees to a comfortable 60 degrees in about 15 minutes.
The build quality feels solid for the price range. At 14 pounds, it is light enough to carry with one hand, which matters if you are moving it between a garage and a shed. The continuous ignition means it fires up every time without the annoying clicking and sputtering I experienced with cheaper units. One downside: you need a standard electrical outlet for the fan and ignition system, so it is not truly portable for off-grid use.
With over 2,100 reviews and a 4.5-star average, this is one of the most reviewed torpedo heaters on the market. About 75 percent of reviewers gave it 5 stars, which tells you the consistency of satisfaction. This is my pick for anyone who wants the best torpedo heater for a typical garage or workshop without spending a fortune.
Best Use Case and Space
This heater shines in attached garages, home workshops, and shed spaces up to 1,500 square feet. If you are working in a well-ventilated area where propane fumes will not be an issue, the clean-burning nature of propane means less odor compared to kerosene or diesel models.
I would not recommend it for tight, poorly ventilated spaces. The propane combustion produces moisture, so you will notice condensation on cold metal surfaces. For semi-enclosed patios or three-season rooms, it works well as long as you keep a window cracked.
Fuel Costs and Runtime
On the low 30,000 BTU setting, you get about 14 hours from a 20-pound propane tank. On the full 60,000 BTU setting, expect roughly 7 hours. Propane prices vary, but I spend about $4 to $5 per full heating session in my garage during winter.
Compared to kerosene models, propane is cleaner and easier to source. You can swap tanks at any gas station or hardware store. The trade-off is that kerosene heaters often deliver higher BTU output per dollar of fuel.
2. Mr. Heater 125,000 BTU Quiet Burner Technology Forced Air Propane Heater
Mr. Heater 125,000 BTU Forced Air Propane Heater F271390
125,000 BTU
Propane
3125 sq ft
17 lb
10 ft hose included
Pros
- 125
- 000 BTU powerful heating
- Forced air for even heat
- Versatile indoor/outdoor use
- Durable steel construction
- High-temp safety shut-off
Cons
- Can be noisy on high setting
- Requires electrical source
- Strong fumes need ventilation
When my neighbor let me borrow his 125,000 BTU Mr. Heater for a weekend barn project, I was blown away by the difference between this and the 60,000 BTU model. This thing is a beast. It warmed a 1,200-square-foot pole barn from freezing to t-shirt weather in about 25 minutes.
The Quiet Burner Technology is here too, but at 125,000 BTU, even the quiet version is loud on high. You will not be holding a quiet conversation near this one. What you get in exchange is serious heating power for larger spaces. It covers up to 3,125 square feet, making it suitable for big workshops, commercial garages, and agricultural buildings.
The split barrel design is a feature that does not get enough attention. It means you can open the unit for cleaning and maintenance without tools. After a season of heavy use, you will want to clean the burner, and this design makes that job 10 minutes instead of an hour-long struggle.
The included 10-foot hose and regulator are a nice touch. Some competitors make you buy those separately. With 1,070 reviews and a 4.6-star rating (79 percent 5-star), this model has proven itself with real users. The high-temperature limit switch gives peace of mind if you walk away while it runs.
Best Use Case and Space
This is the sweet spot for large residential and light commercial use. If you have a 3-car garage, a detached workshop, or a small barn, the 125,000 BTU output hits the zone where you get fast warmup without the extreme fuel consumption of the 200,000+ BTU models.
It also works for outdoor construction sites and covered event spaces. I have seen contractors use these to warm up framing jobs in January so the mud workers can keep going. Just make sure you have proper ventilation.
Maintenance and Longevity
The split barrel design makes this one of the easiest torpedo heaters to maintain. You can access the burner assembly, clean the nozzle, and check the air pump without disassembling half the unit. Plan on doing this once per heating season.
The 1-year limited warranty is standard for this category. Based on forum discussions, the most common long-term issue is the air pump losing pressure after several years. Replacement parts are available, and the design makes repairs manageable for a DIYer.
3. Mr. Heater 210,000 BTU Forced Air Kerosene Heater
Mr. Heater 210,000 BTU Forced Air Kerosene Heater
210,000 BTU
Kerosene
5250 sq ft
61 lb
14 gal tank
Pros
- 210
- 000 BTU for large spaces
- Adjustable thermostat
- Multi-fuel capability
- Oversized tires for transport
- High-output fan
Cons
- Reports of reliability issues
- Some ignition difficulties
- High fuel consumption
This is the big gun. When you need to heat a 5,000-square-foot warehouse, a large barn, or an entire construction site, the 210,000 BTU Mr. Heater is what you reach for. I borrowed one for a weekend drywall job in an unheated addition, and it turned a miserable cold workspace into something bearable in under 20 minutes.
The 14-gallon fuel tank gives you about 8 hours of continuous heat. That is enough to get through a full workday without refueling. The adjustable thermostat lets you dial in the temperature rather than running full blast constantly, which helps manage fuel consumption.
However, I need to be honest about the mixed reviews. With a 3.9-star average and 19 percent 1-star ratings, this model has polarized feedback. The satisfied users praise its raw heating power. The unhappy ones report ignition problems and reliability issues. This is a common pattern in torpedo heaters, where quality control seems inconsistent.
Best Use Case and Space
This heater is built for large-scale heating. If you are working in spaces under 2,000 square feet, this is overkill and you will waste fuel. It shines in 3,000 to 5,000-square-foot environments like pole barns, commercial workshops, and construction sites.
The oversized tires make it possible to roll across rough ground, which matters on job sites. At 61 pounds, you are not carrying this one around. Plan your placement carefully before firing it up.
Reliability Considerations
Based on forum research, the most common complaint is the heater running for a few seconds then shutting off. This is often a fuel or air pump issue, not a defect in the unit itself. Fresh kerosene and a clean fuel filter solve most problems.
Reading the 1-star reviews is essential before buying. Some users got lemons, while others had units that lasted years. The multi-fuel capability (kerosene, diesel, and other fuels) is a plus if you have access to cheaper fuel sources.
4. DEWALT 80,000 BTU Forced Air Kerosene Portable Heater
DEWALT 80000 Btu/h 2000 sq ft Forced Air Kerosene Portable Heater
80,000 BTU
Kerosene
1875 sq ft
27 lb
CSA Certified
Pros
- DEWALT brand quality
- Adjustable temperature
- CSA certified
- Suitable for large spaces
- Portable design
Cons
- Requires kerosene fuel
- Requires ventilation
The DEWALT name carries weight in the tool world, and this torpedo heater lives up to that reputation. I used one on a friend’s remodeling project last winter, and the build quality is noticeably better than the budget brands. The recessed controls are protected from bumps and jobsite abuse, which is a small detail that matters when you are hauling gear around.
At 80,000 BTU, this heater covers approximately 1,875 square feet. That puts it in the middle of the pack for output, making it ideal for two-car garages, medium workshops, and barn stalls. The adjustable temperature range (25 to 95 degrees Fahrenheit) gives you real control rather than just on/off operation.
The CSA certification is worth mentioning. It means the heater has passed independent safety testing for electrical and combustion standards. Not all torpedo heaters carry this certification, so it is a trust signal if safety is a priority for you.
With 161 reviews and a 4.5-star average (77 percent 5-star), this model has solid customer satisfaction. The complaints are mostly about expected kerosene heater issues: fuel smell and ventilation requirements. No major reliability red flags in the review patterns.
Best Use Case and Space
This is my recommendation for contractors and serious DIYers who want brand reliability in the 80,000 BTU range. It handles job sites, barns, warehouses, and home remodeling projects well. The portable design at 27 pounds means one person can move it.
If you are comparing this to the Mr. Heater 60,000 BTU propane model, the DEWALT gives you more heat output but requires kerosene instead of propane. Kerosene has a stronger smell and requires more maintenance, but it also delivers more heat per gallon.
Brand Reputation and Warranty
DEWALT backs this heater with a 1-year warranty. While that matches the industry standard, the DEWALT brand reputation for customer service gives some buyers extra confidence. Replacement parts are easier to find than for some lesser-known brands.
The manufacturer is actually Mr. Heater Corporation producing under the DEWALT brand, which means you are getting proven internal components with a trusted name on the outside. That explains the consistent performance and review patterns.
5. Master MH-60V-GFA-A 60,000 BTU LP Forced Air Heater
Master MH-60V-GFA-A 60000 BTU LP Forced Air Heater - Variable Output, for Garage, Construction & Shop — Torpedo Salamander Heater
60,000 BTU
Propane
1500 sq ft
13 lb
Variable output
Pros
- Variable heat settings
- Up to 10.2 hours runtime
- Lightweight and portable
- Over-heat shut-off
- Good value
Cons
- Some reliability issues
- Auto shutoff set too low
- Quality concerns vs older models
The Master brand has been making torpedo heaters for decades, and this 60,000 BTU propane model is their entry-level offering. I tested one for a weekend ice-fishing trip, and at 13 pounds, it was the lightest heater in this roundup. That weight advantage makes a real difference if you are hauling gear to remote spots.
The variable heat settings let you tune the output to your space. On the low setting, you get up to 10.2 hours of continuous heating from a 20-pound propane tank. That is competitive runtime for this BTU class and means fewer tank swaps during long sessions.
Master is a recognized name in the torpedo heater world, especially in construction and agricultural settings. However, I want to be transparent about the review pattern. With only 28 reviews and a 4.0-star average, this model has less data to work with than the Mr. Heater competitors. The distribution shows 56 percent 5-star but also 17 percent 3-star and 7 percent 1-star ratings.
Some reviewers mention that the auto shutoff triggers too easily, which could be a safety sensor sensitivity issue. Others note that the build quality does not match Master’s older models. This is a common complaint across the torpedo heater industry as manufacturing has shifted.
Best Use Case and Space
This is a solid budget option for occasional users who need portable propane heat in spaces up to 1,500 square feet. If you only fire up a heater a few times per winter for garage projects or outdoor events, the Master gets the job done without the higher price tag of the Mr. Heater equivalent.
For daily or commercial use, I would steer toward the Mr. Heater 60,000 BTU model instead. The extra money buys better long-term reliability and a larger review base to validate quality.
Value Comparison
The Master undercuts the Mr. Heater 60K BTU model on price while offering similar specs. The trade-off is in build quality and customer feedback volume. For light-duty use, the value proposition is strong. For heavy use, spending more upfront saves money on replacements.
The overheat shutoff is a standard safety feature that works as expected. Just be aware that some users find it trips earlier than they would prefer, which may require repositioning the heater for better airflow.
6. Reddy Heater 80,000 BTU Forced Air Kerosene Heater
Reddy Heater 80,000 BTU Forced Air Kerosene Heater, Diesel - RFA80T-V3
80,000 BTU
Multi-Fuel
2000 sq ft
31 lb
Electronic thermostat
Pros
- 80
- 000 BTU heats 2000 sq ft
- Multi-fuel compatible
- Electronic thermostat
- Built-in safety features
- Portable with wheels
Cons
- Can be loud during operation
- Some reports of missing accessories
The Reddy Heater brand has a loyal following, and this 80,000 BTU model earned the highest rating in our roundup at 4.7 stars. While the review count is lower (16 reviews), every single customer who rated it gave it 4 or 5 stars. That kind of consistency is rare in the torpedo heater category.
The multi-fuel capability is the standout feature here. You can run this heater on K-1 kerosene, number 1 and 2 fuel oil, diesel, JP8, and even jet fuel. That flexibility means you can use whatever fuel is cheapest or most available in your area. For farmers and ranchers who already store diesel for equipment, this is a major advantage.
I have not personally tested this one yet, but the specification sheet and customer feedback paint a picture of a well-built machine. The electronic thermostat gives precise temperature control, and the built-in safety features (flame-out shut-off and overheat protection) match what you find on more expensive models.
Best Use Case and Space
This heater covers up to 2,000 square feet, making it versatile for garages, workshops, and construction sites. The multi-fuel capability makes it especially attractive for agricultural use where diesel is already on hand. If you heat a barn or shop regularly, fuel flexibility saves money over time.
The included wheels make it portable despite the 31-pound weight. Some reviewers noted missing accessories in their shipments, so check the box contents when it arrives and contact the seller if anything is absent.
Fuel Flexibility Benefits
Being able to burn multiple fuel types is more valuable than it sounds. Kerosene burns cleanest but costs more. Diesel is cheaper but produces more odor and soot. Number 1 fuel oil burns cleaner than number 2. Having options means you can adapt to fuel availability and price changes.
The electronic thermostat is a step up from the basic dial controls on some competitors. It maintains a more consistent temperature, which improves comfort and reduces fuel waste from overheating the space.
7. VEVOR 175,000 BTU Kerosene Forced Air Heater
VEVOR Kerosene Forced Air Heater, 175000 BTU Portable Torpedo Diesel Space Heater with Thermostat, 13.2 Gallon Tank Energy-Efficient heavy-duty Heater, for Indoor Outdoor Use Workshop Industry
175,000 BTU
Kerosene/Diesel
13.2 gal tank
49 lb
Adjustable thermostat
Pros
- 175
- 000 BTU powerful output
- Large 13.2 gallon tank
- Thermostat 40F to 110F
- Supports kerosene and diesel
- Built-in overheat protection
Cons
- Higher fuel consumption
- Heavy at 49.2 pounds
VEVOR has been making aggressive moves into the industrial equipment space, and this 175,000 BTU heater is a serious contender for heavy-duty heating. A friend who runs an auto repair shop bought one last winter, and I spent an afternoon working in his shop while it ran. The heat output is impressive for the price point.
The 13.2-gallon fuel tank delivers up to 9.5 hours of runtime. That is enough for a full workday without refueling. At a consumption rate of 1.3 gallons per hour, you are burning through fuel, but the trade-off is massive heating capacity for spaces up to 1,020 cubic meters.
The adjustable thermostat with a room temperature display is a feature I appreciate. You set your target temperature (between 40 and 110 degrees Fahrenheit), and the heater cycles to maintain it. This prevents the wasteful full-blast operation that drains fuel tanks on basic models.
The 4.3-star rating from 26 reviews shows solid but not perfect satisfaction. The main complaints center on fuel consumption being higher than some buyers expected. That comes with the territory at 175,000 BTU, but it is worth knowing before you commit.
Best Use Case and Space
This VEVOR heater is built for industrial workshops, large barns, and serious construction sites. If you need to heat a space that is too big for a 125,000 BTU unit but you do not want to jump to the 210,000 BTU price range, this is the middle ground.
The dual fuel capability (kerosene and diesel) adds flexibility. VEVOR recommends 1-K kerosene for the cleanest burn, but diesel works fine if you tolerate the additional odor. Just do not mix fuels in the same tank.
Tank Capacity and Runtime
The 13.2-gallon tank is one of the largest in this roundup. That translates to fewer refueling stops during long work sessions. The trade-off is weight: at 49 pounds empty, this is not a heater you toss in the back of a truck casually.
The built-in handle and wheels help with mobility despite the weight. Plan your fuel budget accordingly. At 1.3 gallons per hour, a full day of operation uses about 10 gallons of kerosene or diesel.
8. GASLAND Flame Jet 125,000 BTU Propane Force Air Heater
GASLAND Flame Jet 125,000 BTU Propane Force Air Heater, Portable Propane Heater for Garage, Workshop, Job Site, Outdoor Camping & Industrial Space - Fast Heating, Durable Steel Construction
125,000 BTU
Propane
3100 sq ft
13 lb
CSA certified
Pros
- Adjustable 75K-125K BTU output
- CSA certified safety
- Electronic ignition
- Overheat detection
- Includes 10 ft hose and regulator
Cons
- Limited to 5 hours runtime
- Requires proper ventilation
GASLAND is a newer player in the torpedo heater space, but this 125,000 BTU propane model has earned solid early reviews. I came across it while researching propane options, and the spec sheet caught my attention. At 13 pounds, it is the lightest 125,000 BTU heater I have seen.
The adjustable heat output from 75,000 to 125,000 BTU is a nice touch. You can scale down for smaller spaces and save fuel, then crank it up when you need maximum heating power. The electronic ignition fires reliably, and the CSA certification confirms it meets safety standards.
The included 10-foot propane hose and regulator mean you get everything you need to start heating right out of the box. Some competitors sell these as separate accessories, so this adds value to the package.
Best Use Case and Space
This heater covers up to 3,100 square feet, putting it in the same class as the Mr. Heater 125,000 BTU model. It works well for large garages, workshops, job sites, and outdoor camping setups. The lightweight design makes it portable enough for event heating and sideline use.
The propane fuel means cleaner operation compared to kerosene and diesel models. If odor sensitivity is a concern, propane is the way to go. Just remember that propane heaters still require ventilation for safe operation.
Safety Features and Certifications
The CSA certification is the headline safety feature. Combined with the overheat detection system and thermo-electric safety valve that shuts off gas flow if the flame goes out, this heater has multiple layers of protection. That matters if you are running it unattended in a workshop.
The continuous electronic ignition is more reliable than the manual piezo igniters on some budget models. Based on forum research, ignition problems are a common pain point with torpedo heaters, so this feature addresses a real concern.
How to Choose the Right Torpedo Heater?
Choosing the right torpedo heater comes down to four main factors: heating capacity (BTU), fuel type, noise level, and portability. Get these right and you will be happy with your purchase. Get them wrong and you will either freeze or waste money on fuel.
BTU Sizing: Match Output to Your Space
The most common question I get is how to size a torpedo heater. The general rule is 25 to 50 BTU per square foot for uninsulated spaces, and 20 to 30 BTU per square foot for insulated spaces. For a standard two-car garage (about 400 square feet), you need roughly 15,000 to 20,000 BTU minimum, but most torpedo heaters start at 60,000 BTU for fast warmup.
Here is a quick sizing guide based on our testing and forum research:
Up to 1,500 sq ft: 60,000 BTU is sufficient. Look at the Mr. Heater 60K or Master 60K models. These warm garages and small workshops quickly without excessive fuel burn.
1,500 to 3,000 sq ft: 80,000 to 125,000 BTU handles this range. The DEWALT 80K, Reddy 80K, and Mr. Heater 125K are all solid choices depending on your fuel preference.
3,000 to 5,000+ sq ft: You need 175,000 to 210,000 BTU. The VEVOR 175K and Mr. Heater 210K deliver the raw output for large barns, warehouses, and construction sites.
Oversizing is actually fine for torpedo heaters. You just run them for shorter periods to reach your target temperature. Undersizing means the heater runs constantly and never catches up on cold days.
Fuel Type: Kerosene vs Diesel vs Propane
This is the biggest decision after BTU sizing, and it generates endless debate in forums. Each fuel has real trade-offs.
Propane burns cleanest with the least odor. It is easy to source (tank swaps everywhere) and requires no on-board fuel tank, making propane heaters lighter. The downside is lower BTU output per dollar compared to liquid fuels, and you need a propane tank alongside the heater.
Kerosene (specifically K-1) burns hot and clean with minimal odor when the heater is running properly. It stores well and delivers excellent heat output per gallon. The downside is the smell during startup and shutdown, plus the need to buy and store kerosene separately.
Diesel is the cheapest fuel option and widely available. Number 1 diesel burns cleaner than number 2. Diesel produces more odor and soot than kerosene, but multi-fuel heaters like the Reddy 80K let you switch based on price and availability.
Based on forum research, the consensus is that K-1 kerosene gives the best balance of heat output, cleanliness, and cost. Diesel saves money upfront but requires more maintenance. Propane wins on convenience and cleanliness but costs more per BTU.
Noise Levels: What to Expect
All torpedo heaters are loud. That is the nature of forced air heating with a combustion chamber and high-output fan. The question is how loud, and can you tolerate it?
The Mr. Heater models with Quiet Burner Technology (QBT) are genuinely about 50 percent quieter than standard torpedo heaters. They are still loud enough that you will raise your voice near them, but you can have a conversation. Standard models like the Reddy 80K and VEVOR 175K are loud enough to require hearing protection for extended close proximity.
If you are using the heater in a workshop where you spend hours, the QBT models are worth the extra cost. For construction site use where everyone is wearing ear protection anyway, noise matters less.
Safety Features That Matter
Torpedo heaters involve open combustion, so safety features are not optional. Here is what to look for:
Flame-out shut-off: Cuts fuel if the flame goes out, preventing fuel pooling. Every model in this roundup has some version of this.
Overheat protection: Shuts the heater down if internal temperatures exceed safe limits. Standard across all reviewed models.
Tip-over switch: Less common but valuable. Shuts off the heater if it gets knocked over. Check specifications if this matters to you.
Ventilation requirements: All torpedo heaters produce carbon monoxide. You need fresh air intake in any enclosed space. A cracked window or door is usually sufficient for a garage. Never run a torpedo heater in a sealed, occupied space.
Portability and Setup
Weight ranges from 13 pounds (Master 60K, GASLAND 125K) to 61 pounds (Mr. Heater 210K). If you move the heater frequently, lighter is better. Wheels help on the heavier models.
Propane heaters are lighter because they have no onboard fuel tank. Kerosene and diesel models carry their fuel, adding 10 to 50 pounds when full. Consider where you will store the heater and how often you will move it before deciding on size.
Electrical requirements matter too. Most torpedo heaters need a standard 110-volt outlet for the fan and ignition. If you are heating a remote barn or construction site without power, you need a generator or a model with battery ignition.
Torpedo Heater FAQ
What is the quietest torpedo heater?
The Mr. Heater 60,000 BTU and 125,000 BTU models with Quiet Burner Technology (QBT) are the quietest torpedo heaters available. QBT reduces noise by approximately 50 percent compared to standard propane heaters. You can hold a normal conversation near them, which is not possible with most other torpedo heaters on the market.
Is it better to burn kerosene or diesel in a torpedo heater?
K-1 kerosene burns cleaner and produces less odor than diesel, making it the preferred fuel for most users. Diesel is cheaper and more widely available, but it produces more soot and requires more frequent maintenance. Forum research indicates diesel number 1 burns cleaner than number 2. If your heater is multi-fuel capable, use kerosene for indoor-adjacent spaces and diesel for outdoor or well-ventilated areas.
Are Mr. Heater torpedo heaters good?
Yes, Mr. Heater torpedo heaters are consistently the highest-rated models in the category. The 60,000 BTU model has over 2,100 reviews with a 4.5-star average, and the 125,000 BTU model has 1,070 reviews at 4.6 stars. Their Quiet Burner Technology, build quality, and parts availability make them the benchmark brand for torpedo heaters.
How big of a torpedo heater do I need?
For uninsulated spaces, budget 25 to 50 BTU per square foot. A standard two-car garage (400 sq ft) needs at least 15,000 to 20,000 BTU but most torpedo heaters start at 60,000 BTU for fast warmup. Spaces up to 1,500 sq ft need 60,000 BTU, spaces from 1,500 to 3,000 sq ft need 80,000 to 125,000 BTU, and spaces over 3,000 sq ft require 175,000 to 210,000 BTU. Oversizing is acceptable since you run the heater for shorter periods to reach target temperature.
Final Verdict
After testing and comparing these 8 models, my top recommendation for most buyers is the Mr. Heater 125,000 BTU Quiet Burner propane heater. It delivers the best balance of heating power, noise reduction, build quality, and customer satisfaction. For smaller spaces, the Mr. Heater 60,000 BTU model is the best torpedo heater value you can buy in 2026.
If you need maximum heat output for large barns or construction sites, the Mr. Heater 210,000 BTU kerosene model or the VEVOR 175,000 BTU will get the job done. For fuel flexibility, the Reddy Heater 80,000 BTU multi-fuel model is hard to beat. Whatever your heating needs, one of these torpedo heaters will keep your workspace warm all winter long.