Best Propane Heaters for Shops and Garages

The right propane heater can keep a workshop, garage, or outdoor jobsite comfortable without rewiring or major installation. Below is a comparison of five reliable propane heater options suitable for shop use, from portable radiant units to high-output forced-air systems.

Model	Type	Coverage/Output
Mr. Heater Propane Unit Heater MHU80LP	Unit/Forced Air	80,000 BTU
Mr. Heater MH60QFAV	Portable Forced-Air	30,000–60,000 BTU
Mr. Heater Portable Buddy MH9BX	Radiant Portable	4,000–9,000 BTU
Mr. Heater MH540T Tank Top	Radiant Tank-Top	30,000–45,000 BTU
Mr. Heater 125,000 BTU Forced Air F271390	High-Output Forced-Air	125,000 BTU

Mr. Heater Propane Unit Heater 80,000 BTU/Hr. MHU80LP

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This unit is designed for permanent mounting in garages or shops and provides 80,000 BTU of forced-air heating. It includes angle brackets for ceiling mount and a spark ignition with a self-diagnostic control module to simplify start-up and troubleshooting. The heater is built to circulate warm air across larger shop spaces where centralized heat is preferred over portable options.

Key operational points: the model is intended for indoor/commercial-type spaces with proper venting and clearance. It is notable for its forced-air delivery, which warms air quickly and distributes heat through the workspace. Installation typically requires adherence to local codes and may require a licensed technician for gas line connections.

Mr. Heater MH60QFAV 60,000 BTU Portable Propane Forced Air Heater

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The MH60QFAV is a portable forced-air heater with a variable output of 30,000–60,000 BTU, allowing tuning to shop size and desired runtime. It incorporates QBT (Quieter Burner Technology), making it approximately 50% quieter than standard forced-air units, which is useful in occupied workshops or when noise is a concern.

This model can run up to 14 hours on a 20 lb propane tank at low settings, offering flexible runtime for day-long projects. The unit’s portability and adjustable heat output make it suitable for temporary heat in larger garages or zones within a shop. Users should follow ventilation guidance for combustion air and maintain safe distances from flammable materials.

Mr. Heater Portable Buddy Heater MH9BX 4,000-9,000 BTU

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The Portable Buddy is a compact radiant heater best for small shop stalls, workbenches, or quick spot heating. With an adjustable range of 4,000–9,000 BTU, it is optimized for spaces up to approximately 225 sq. ft. The radiant design heats objects and people directly rather than warming the air, providing efficient localized warmth.

Safety features include an improved tip-over switch and a durable Piezo igniter for match-free starts. This unit is designed for close-range comfort and temporary use; it is not intended to replace larger shop heating systems. For enclosed shop environments, follow indoor-safety guidelines and ensure adequate ventilation when operating any propane appliance.

Mr. Heater MH540T 540-Degree 45,000 BTU Radiant Tank Top Heater

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This tank-top radiant heater mounts to a standard 20 lb propane cylinder and delivers three power levels: 45,000, 36,000, and 30,000 BTU. The 540° radiant coverage (360° burner plus 180° swivel bracket) is designed to warm people and objects in a broad area, making it an option for open or semi-open shop spaces or outdoor covered work areas.

Features include a tip-over safety shut-off and adjustable mounting for directing radiant output. As a tank-top radiant unit, its use is best suited for occasional or mobile heating tasks rather than continuous indoor operation; confirm local code compliance and recommended clearances before use in semi-enclosed shop environments.

Mr. Heater 125,000 BTU Forced Air Propane Heater F271390

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The F271390 is a high-output forced-air heater providing 125,000 BTU, intended for large shops, warehouses, and jobsite tents. It features Quiet Burner Technology, a high-temperature limit switch, and includes a 10 ft hose and regulator for connection to propane tanks or bulk systems.

This heater is designed for heavy-duty applications where rapid heating and high capacity are required. Forced-air units like this one are effective at raising ambient air temperature across substantial volumes, but they require proper fuel supply, ventilation, and adherence to clearance and mounting specifications for safe, long-term operation.

Buying Guide: Choosing The Right Propane Heater For Your Shop

Selecting a propane heater for a shop involves matching heater type, capacity, and safety features to your workspace and usage patterns. The guide below covers the key factors to consider before purchase.

1. Heater Type And Heat Delivery

• Forced-Air Heaters: Use a fan to distribute warm air. Best for heating entire shops or larger zones quickly. Look for BTU output and fan capacity.
• Radiant Heaters: Heat objects and people directly. Ideal for spot heating benches or workstations, and for open or semi-open spaces where heating air is inefficient.
• Tank-Top Heaters: Mount on a 20 lb cylinder for portable radiant heat. Suitable for temporary outdoor or semi-enclosed spaces.

2. Sizing And BTU Requirements

Estimate heat needs based on shop volume and insulation. As a rule of thumb, multiply square feet by ceiling height to get cubic footage, then select a heater with appropriate BTU output. Forced-air models typically provide more BTUs for whole-shop heating, while radiant units require fewer BTUs for localized warmth.

3. Portability Vs. Permanent Installation

• Portable Units Offer flexibility and are useful for temporary jobs or multiple work areas.
• Mounted/Unit Heaters Provide consistent, whole-space heating but often require professional installation and a dedicated gas supply line.

4. Fuel Connection And Supply

Decide between standard 20 lb propane cylinders or bulk propane supply. Large BTU forced-air units may require larger tanks or plumbed propane; check included hose/regulator lengths and compatibility.

5. Safety Features And Ventilation

• Tip-Over Shut-Off: Essential for portable radiant units.
• High-Temperature Limit Switch: Prevents overheating in forced-air units.
• Oxygen Depletion Sensors (ODS): Important for indoor safe operation on some models; check whether the model is rated for indoor use.
• Ventilation: Ensure sufficient combustion air for indoor heaters and follow clearance instructions to reduce fire risk.

6. Noise Levels And Workplace Comfort

Forced-air heaters can be noisy; models featuring quiet-burner technology or QBT reduce sound output. Consider noise tolerance in occupied shops or shared workspaces and select quieter units if necessary.

7. Runtime And Efficiency

Compare runtime estimates on standard propane tanks for portable units and efficiency features for radiant models. Variable output settings can extend runtime and improve fuel economy during low-demand periods.

8. Installation, Maintenance, And Compliance

Permanent installations may require permits and licensed technicians for gas connections and venting. Routine maintenance such as cleaning air intakes, checking hoses and regulators, and periodic inspection of ignition systems improves safety and longevity.

9. Application And Use Cases

• Large Open Shop: Choose high-BTU forced-air heaters with proper mounting and ventilation.
• Small Workshop Or Bench Area: Radiant units or small forced-air models offer targeted heat.
• Temporary Jobsite Heat: Portable forced-air or tank-top radiant heaters provide flexibility.

10. Comparison Perspectives

When comparing models, evaluate BTU per square foot, distribution method (air vs. radiant), portability, safety certifications, and included accessories like hoses and mounting brackets. Consider total operational cost through fuel consumption patterns rather than initial unit size alone.