Best Garage Heater Options for Winter Workshops
A cold garage turns even a simple oil change or woodworking project into a test of endurance, so the right heater matters more than most people expect. The challenge is that garages vary wildly: some are insulated and attached, others are drafty detached shells with no gas line, and each situation points to a different type of heater.
Quick answer
The Mr. Heater MH60QFAV 60,000 BTU propane forced air heater is the best overall pick for most unheated garages because it delivers serious heat fast without requiring a permanent installation.
Why trust ToolBuyerHub
- Cross-checked manufacturer-published specifications before writing any recommendation
- Verified US market availability and configuration for every model discussed
- Owner-feedback themes are summarized as feedback, never presented as our own hands-on testing
- No invented star ratings; see the visible Research Score criteria on this page
- Checked load ratings and safety documentation before recommending lifting or jacking equipment
- We compare heater types by real-world constraints first, including available fuel, ventilation, circuit amperage, and whether the space is insulated, rather than ranking by raw BTU alone.
Research updated September 2026.
What Matters Most for This Category
The single biggest factor is your fuel and power situation. A detached garage with no gas line and only a 15 amp circuit cannot run a 240 volt electric unit, while an attached, insulated garage may be perfectly served by one. Match the heater type to your space before comparing BTU ratings, then size the output to your square footage and insulation level. Ventilation is the other non-negotiable: any combustion heater that is not direct vented produces carbon monoxide and needs airflow, and propane or kerosene units should never run in a sealed room overnight.
| Model | Best for | Key specs | Research Score |
|---|---|---|---|
| Mr. Heater MH60QFAV 60,000 BTU Propane Forced Air Heater | Best Overall | Propane, 60,000 BTU | 93/100 |
| Dyna-Glo RMC-FA60DGD 60,000 BTU Propane Forced Air Heater | Best Value | Propane, 60,000 BTU | 90/100 |
| Dr. Infrared Heater DR-988 Garage Shop Heater | Best for Insulated Garages | Electric, 240 volt | 88/100 |
| NewAir G73 Electric Garage Heater | Best Budget Electric | Electric, 240 volt | 85/100 |
| Mr. Heater F274830 MH18B Portable Buddy Heater | Best Portable | Propane, 4,000 to 18,000 BTU | 83/100 |
| Dyna-Glo RA18LPDG 18,000 BTU Liquid Propane Radiant Heater | Best Radiant Propane | Propane, Up to 18,000 BTU | 81/100 |
| Fahrenheat FUH54 Electric Garage Heater | Best Heavy Duty Electric | Electric, 240 volt | 79/100 |
Mr. Heater MH60QFAV 60,000 BTU Propane Forced Air Heater
Top PickPros
- Very high heat output for fast warm-up in cold garages
- Runs on standard 20 lb propane tanks or larger
- Forced air fan pushes heat across the whole space
- No electrical installation required beyond a standard outlet
Cons
- Requires ventilation and produces combustion byproducts
- Propane tanks add ongoing cost and refill trips
This is the workhorse choice for a detached or unheated garage where you need heat now and do not want to run a gas line or 240 volt circuit. Based on manufacturer specifications, it puts out enough BTU to bring a large, poorly insulated space up to working temperature in a reasonable time. Owner-feedback themes consistently mention fast heat delivery and simple setup as the main draws.
Dyna-Glo RMC-FA60DGD 60,000 BTU Propane Forced Air Heater
Great ValuePros
- Comparable output to pricier propane units
- Continuous ignition and overheat shutoff
- Runs on common 20 lb or 100 lb tanks
- Lightweight and easy to move between jobs
Cons
- Still requires ventilation like any open flame propane heater
- Fan noise is noticeable in a quiet shop
Dyna-Glo's forced air propane line is a solid alternative when the Mr. Heater is out of stock or priced higher. It matches the class on output and adds a straightforward push button ignition. Based on comparison, the main differences are cosmetic and brand preference rather than capability.
Dr. Infrared Heater DR-988 Garage Shop Heater
Electric PickPros
- No combustion, so no carbon monoxide risk
- Mounts overhead and keeps floor space clear
- Quiet operation compared to forced air propane
- Thermostat control for steady temperature
Cons
- Requires a 240 volt circuit, which many garages lack
- Struggles to keep up in a large, uninsulated space
For an attached, insulated garage with a 240 volt outlet, an electric unit like this is the cleanest solution. It produces no fumes, needs no refueling, and can be left on a thermostat. Based on manufacturer specifications, it is best suited to spaces that already hold heat reasonably well.
NewAir G73 Electric Garage Heater
Budget ElectricPros
- Lower upfront cost than many 240 volt competitors
- Hardwired or plug-in options depending on model
- Fan-forced heat distributes well in a small shop
- No fumes or fuel storage
Cons
- Output is modest for large or drafty garages
- Installation may require an electrician
The NewAir G73 is a common entry point into 240 volt electric garage heating. It works well in a one or two car insulated garage where the goal is taking the chill off rather than heating a barn. Based on owner-feedback themes, most complaints trace back to undersized circuits or uninsulated spaces rather than the unit itself.
Mr. Heater F274830 MH18B Portable Buddy Heater
PortablePros
- Small, light, and easy to carry anywhere
- Multiple heat settings for different conditions
- Runs on 1 lb disposable or larger tanks with a hose
- Built-in tip-over and low oxygen shutoff
Cons
- Radiant heat warms people and objects more than air
- Not enough output for a large garage on its own
This is the heater you grab for spot warming while working under a car or at a bench, not for heating the whole garage. It is compact, safe for indoor use with proper ventilation, and inexpensive to run on small tanks. Based on manufacturer specifications, it is a supplement rather than a primary heat source.
Dyna-Glo RA18LPDG 18,000 BTU Liquid Propane Radiant Heater
Radiant HeatPros
- Radiant heat feels warm immediately on skin
- No electricity needed at all
- Mounts directly on a standard propane tank
- Simple, nearly maintenance-free design
Cons
- Heats objects and people, not the whole room evenly
- Open flame requires ventilation
A tank-top radiant heater is a practical choice for a garage with no power at all, since it needs nothing but a propane cylinder. It throws warmth directly at whoever is in front of it. Based on comparison, it suits short work sessions better than all-day heating.
Fahrenheat FUH54 Electric Garage Heater
Heavy DutyPros
- Rugged construction aimed at shop environments
- Fan-forced design moves air well
- Thermostat and multiple heat settings
- No fuel or fumes to manage
Cons
- Needs a dedicated 240 volt circuit
- Higher price than basic electric units
Fahrenheat's FUH series is built for people who want a permanent, durable electric heater in a working shop. It is heavier and more expensive than budget electric options but is designed for continuous use. Based on manufacturer specifications, it rewards buyers who already have the wiring in place.
Who Should Avoid the Top Pick
Skip any open flame combustion heater if your garage has no ventilation, no windows, or shares air with living space, since carbon monoxide is a genuine hazard. Also avoid 240 volt electric heaters if you only have standard 120 volt outlets and no plan to run a new circuit, and avoid undersized radiant units if your goal is heating an entire large, uninsulated garage rather than warming a work area.
Before You Buy
Measure your garage and note whether it is insulated, attached, or detached, then check what fuel and power you actually have available. Confirm the amperage and voltage of any existing circuit before buying an electric heater, and decide whether you are willing to handle propane tanks and ventilation. Finally, think about whether you need whole-room heat or just spot warmth, because that single question eliminates most of the wrong choices.
FAQs
What size heater do I need for a two car garage?
As a rough guide, an uninsulated two car garage often needs 45,000 to 60,000 BTU, while an insulated one can get by with considerably less. Insulation and outdoor temperature matter as much as square footage.
Can I use a propane heater in a garage?
Yes, but only with adequate ventilation, since propane heaters produce carbon monoxide and moisture. Never run one in a fully sealed space or leave it unattended overnight.
Do electric garage heaters need a special outlet?
Many higher output electric garage heaters run on 240 volts and need a dedicated circuit, which usually means an electrician. Smaller 120 volt units exist but produce far less heat.
Are infrared garage heaters better than forced air?
Infrared heaters warm people and objects directly, which feels fast in a cold spot, while forced air heaters warm the air in the whole room. The better choice depends on whether you want spot warmth or general heating.
How much does it cost to run a garage heater?
Running cost depends on fuel prices and local electricity rates. Propane is often cheaper per BTU in many areas, while electric is simpler but can be more expensive to operate at high output.
Can I leave a garage heater running all night?
Only direct vented or electric heaters designed for unattended operation should run overnight. Open flame propane and kerosene units should be shut off when you leave the space.
Our verdict
For most unheated garages, the Mr. Heater MH60QFAV offers the best balance of raw output, simplicity, and price, provided you ventilate properly. If your garage is insulated and already wired for 240 volts, an electric unit like the Dr. Infrared DR-988 is the cleaner long-term choice. Match the fuel and power to your actual space before you buy, and the decision becomes much simpler.