The best type of space heater for a garage is a propane or electric heater with high BTU output, ensuring efficient heating in large, uninsulated areas.
Working in a freezing garage? Struggling to find a heater that’s powerful, energy-efficient, and safe? You’re not alone—most garage heaters either waste energy, pose fire risks, or fail to combat drafts.
The right space heater for your garage can transform it into a comfortable workspace year-round. In this guide, we’ll cover the top types, key features, and safety tips—plus how to choose between infrared, oil-filled, and propane models. For maintenance insights, check our guide on extending heater lifespan.
Key Takeaways
- Infrared heaters heat objects directly, ideal for drafty garages.
- Oil-filled radiators provide steady, silent warmth but take longer to heat up.
- Propane heaters offer intense heat but require ventilation (safety tips here).
- Look for thermostats, tip-over switches, and CE certification for safety.
1. Infrared Heaters: Instant Warmth for Drafty Spaces
Infrared heaters emit radiant heat, warming objects and people directly instead of the air. This makes them perfect for garages with poor insulation or frequent door openings. According to the U.S. Department of Energy, radiant heaters can be 10-20% more efficient than convection models in uninsulated spaces.
Top Features to Look For:
| Feature | Why It Matters |
|---|---|
| Adjustable thermostat | Prevents overheating and saves energy |
| Wall/celling mount | Saves floor space and reduces tripping hazards |
| Quiet operation | No noisy fans, ideal for workshops |
For safety, ensure your infrared heater has a tip-over switch and overheat protection. Learn more about infrared heater safety.
2. Oil-Filled Radiators: Steady, Energy-Efficient Heat
Oil-filled heaters use electricity to heat sealed diathermic oil, which retains warmth longer. They’re silent and safer for long unattended use, though they take 15-20 minutes to reach full temperature.
Pros vs. Cons
- + No dry air or fumes—great for painted surfaces
- + Low surface temperature reduces burn risks
- – Heavier (harder to move)
3. Propane Heaters: High Output for Large Garages
Propane models like the Mr. Heater Big Buddy deliver up to 18,000 BTUs, heating 400+ sq. ft. fast. However, they require ventilation to prevent carbon monoxide buildup. The CPSC recommends never using unvented fuel heaters in enclosed spaces.
FAQ Section
Q: Can I leave an oil-filled heater on overnight?
A: Yes, if it has tip-over and overheat protection. However, monitor it initially to ensure safety.
Q: How many BTUs do I need for a 2-car garage?
A: 10,000–30,000 BTUs, depending on insulation. Use this formula: (Square footage × 10) + (Ceiling height × 5).
Final Words
For most garages, infrared or oil-filled heaters strike the best balance of safety and efficiency. Prioritize models with programmable thermostats and auto-shutoff—like those in our programmable thermostat guide. Stay warm and work smarter!
