Cold weather can slow down any crew, so finding the best space heater in 2025 is important for staying warm and keeping work moving. The right space heater can help tools run more reliably, protect materials, and keep your team focused in tough conditions. From electric space heaters like the Dr. Heater DR218 to powerful propane models such as the DeWALT DXH90FAV and Mr. Heater MH60QFAV, the space heaters offer strong heat, simple controls, and important safety features for busy jobsites. Below are our top picks to help you choose the best space heater for your construction site and keep every project on schedule this winter.
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1. DeWALT DXH90FAV Forced Air Propane Heater
| Pros | Cons |
| – High BTU output (up to 90,000) – Heats large areas quickly – Durable steel construction | – Requires a propane tank – Louder at higher power settings |
If you need a space heater for large rooms or open job sites, the DeWALT DXH90FAV is one of the best space heaters of 2025. This heavy-duty portable space heater delivers up to 90,000 BTUs, providing even heat throughout large spaces where a small ceramic space heater just won’t cut it. Built with a tough steel body and a safety feature that automatically shuts off the flame if airflow stops, this model is designed for reliable performance on construction sites. The heater could easily keep a crew warm all day while helping tools and materials stay at working temperature.
Features
- BTU range: 50,000 to 90,000
- Runs up to 7 hours on a 20-lb propane tank
- Built-in thermostat and continuous ignition
- Durable steel body with split-barrel design
- Heats large open floor space quickly and evenly
2. Mr. Heater 60,000 BTU Forced-Air Propane Heater
| Pros | Cons |
| – Adjustable heat settings – Easy start-up with Quiet Burner Technology – Great for mid-sized spaces | – Needs access to propane – Not ideal for confined spaces |
The Mr. Heater MH60QFAV is a dependable space heater built for workshops, garages, and mid-sized construction zones where electric power may be limited. As one of the top picks for space heaters, this model offers between 30,000 and 60,000 BTUs of heat to cover larger floor space while maintaining even warmth throughout. Thanks to its Quiet Burner Technology, the heater could run for long hours without the constant roar that many propane models produce. It’s a solid option if you want a portable heater that’s tough enough for jobsite use but quiet enough for indoor use (when properly ventilated).
The space heater could also work well as a backup when electric space heaters or central heating are unavailable. Its built-in handle and sturdy frame make it easy to move from one jobsite to another. The added safety features help crews feel confident using it during long workdays in cold weather. Thanks to its efficient propane use, strong build, and flexible heat settings, it is a dependable choice for contractors who need steady, high-output heat on the go.
Features
- BTU range: 30,000–60,000
- Runs up to 14 hours on a 20-lb propane tank
- Quiet Burner Technology reduces noise while maintaining heat output
- CSA-certified safety feature for reliable operation
- Lightweight and portable heater with built-in handle for easy transport
3. DeWALT DXH12B Cordless Propane Radiant Heater
| Pros | Cons |
| – Runs on 20V MAX® or FLEXVOLT® batteries; truly cordless and portable – Quiet operation, includes LED work light and USB ports – Certified for indoor safe use – Runs on DeWALT 20V MAX® and FLEXVOLT® | – Heat output is more modest (6,000/12,000 BTU) compared to large forced-air propane models – Requires propane tank fuel; battery supports ignition and electronics, not complete fuel independence |
If you’re looking for a truly portable heater that fits into a cordless tool ecosystem, the DeWALT DXH12B is a great choice for smaller enclosed jobsites or indoor spaces. This radiant-style space heater runs on propane but is powered by your 20V MAX or FLEXVOLT batteries, making it one of the more flexible portable space heaters for construction use in 2025.
The radiant design heats objects and people directly rather than the air, which means the heater can work efficiently even in tight indoor spaces with limited ventilation. With jobsite-friendly features like the LED work light, USB charging ports, and a rugged handle, this model blends convenience and performance for crews who already use DeWALT cordless systems.
This model is one of the smarter choices for crews needing a battery-powered heater alternative when traditional electric space heaters or large propane forced-air units aren’t practical. It offers real portability, cordless convenience, and jobsite durability without sacrificing important safety features.
Features
- 6,000 / 12,000 BTU output
- Dual-tank capability with up to approx. 7 hours run time on appropriate propane tanks
- Built-in LED work light and 3 USB charging ports
- Oxygen Depletion System (ODS) and thermoelectric safety valve for safe indoor jobsite use
- Compatible with DeWALT 20V MAX® / FLEXVOLT® batteries
4. Dyna-Glo Delux RMC-FA150DGD Forced Air Heater
| Pros | Cons |
| – Covers large areas (up to 3,500 sq. ft.) – Adjustable heat range – Built-in safety shutoff | – Requires ventilation – Uses propane fuel |
If you’re working in a big, drafty warehouse or on an outdoor jobsite, the Dyna-Glo Delux RMC-FA150DGD Forced Air Heater is a powerful option. This space heater can warm areas up to 3,500 square feet, making it one of the best space heaters for large projects. Its forced-air design helps evenly distribute heat, so you can keep an entire large room or an open floor space comfortable even in freezing weather.
The heater could easily replace smaller models that struggle to heat a room of that size, and it includes reliable safety features, such as auto-shutoff and overheat protection. This portable space heater is propane-powered, so proper ventilation is important, but its heat output makes it an excellent choice for construction crews who need steady warmth in cold environments.
The Dyna-Glo heater is ideal for contractors and site managers looking for dependable, high-powered heat that covers large spaces. It’s durable and engineered to maintain performance even in the toughest winter conditions. If you’re looking for the best space heater for wide or open jobsites, this model ranks among the top performers on the market in 2025.
Features
- BTU range: 70,000–150,000
- Heats up to 3,500 sq. ft. efficiently and evenly
- Overheat protection and flameout detection for added safety features
- Easy-carry handle and regulator hose included
- Adjustable thermostat for precise temperature control
5. Dr. Heater DR218 Infrared Industrial Heater
| Pros | Cons |
| – Electric, no fuel needed – Quiet operation – Ideal for indoor job sites | – Requires electrical outlet access – Lower heat coverage than propane models |
For enclosed spaces or indoor job sites with limited ventilation, the Dr. Heater DR218 Infrared Industrial Heater is one of the best space heaters of 2025. This electric space heater uses an infrared heating element that warms objects and people directly rather than heating the air, helping conserve energy and maintain steady warmth in a defined area.
The heater could be perfect for workshops, basements, or job trailers where propane is not an option. It runs quietly, with no fumes or open flames, and offers simple controls through its adjustable thermostat. This space heater for indoor use is designed with a rugged steel casing that can handle busy environments, making it one of the most reliable space heaters we’ve found for enclosed job spaces.
Features
- Infrared heating element delivers fast, even heat
- Adjustable thermostat for temperature control
- 240V plug with 5600W output for consistent performance
- Rugged steel casing built for industrial environments
- Quiet fan heater system ideal for indoor use
6. Milwaukee M18 70,000 BTU Forced Air Propane Heater
| Pros | Cons |
| – Brushless motor design for durability – High output covers large jobsite areas – Compatible with M18 battery system and AC mode | – Still a propane-fuel heater; ventilation required – Heats large areas but not as efficient for smaller enclosed spaces |
If you’re looking for a heavy-duty jobsite option, the Milwaukee M18 70,000 BTU Forced Air Propane Heater is a smart pick. In our lineup of the best space heaters of 2025, this model earns a spot for big open workspaces. This space heater delivers serious heat output to warm a room or large area and integrates with the M18 battery system, giving you flexibility on and off the generator. The heater could be a game-changer for contractors who need rugged equipment, powerful output, and standard battery compatibility.
Features
- Up to 70,000 BTU output
- Brushless motor and variable heat settings
- Compatible with M18 batteries and includes hose/regulator
- Built for well-ventilated jobsite use; not for confined spaces
7. Remington 60,000 BTU Battery‑Operated LP Forced Air Heater
| Pros | Cons |
| – Battery-powered heater, LP version offers fuel flexibility – Good output (up to 60,000 BTU) for mid to large spaces – Portable and jobsite-friendly | – Battery and fuel both required – Requires ventilation because it is LP/propane-based |
The Remington 60,000 BTU Battery-Operated LP Forced Air Heater broadens the list of space heaters by offering a mix of battery and propane power, making it perfect when you want a portable space heater that doesn’t rely solely on cords. This model stands out in our “space heaters we’ve found” list for its blend of jobsite durability and flexibility. The heater could serve as a reliable backup when central heat is off or when you’re working in outdoor or semi-enclosed spaces that need serious warmth in 2025.
Features
- Up to 60,000 BTU output
- Battery-operated forced-air design; LP fuel required
- Compact carry handle and jobsite-ready design
- Suitable for larger work areas than typical tabletop or ceramic heaters
Which space heater should you choose?
Finding the best space heater for your construction site in 2025 really comes down to how and where you work. A propane space heater like the DeWALT DXH90FAV or the Dyna-Glo Delux RMC-FA150DGD is great for wide-open job sites that need serious heating power. If you’re working indoors or in smaller, enclosed areas, a portable electric space heater such as the DeWALT DXH12B or the Dr. Heater DR218 infrared heater might be a better fit.
Each space heater has its advantages. Propane models heat large rooms quickly and evenly, while electric space heaters and battery-powered units offer cleaner, quieter operation with built-in safety features. The right space heater could improve both comfort and productivity when the temperature drops.
If you’re looking for the best space heater overall, consider your space, power access, and ventilation needs before you buy.
Learn more about heating systems and what to look for in 10 common home heating options: pros, cons, and how to pick the right one.
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