Mr. Heater vs Dura Heat TT-360: Which Heater is Better?

Portable propane heaters are essential for outdoor heating, especially in colder months. This comparison examines two popular models: the Mr. Heater 45,000 BTU Tank Top Radiant Propane Heater and the Dura Heat TT-360.

Mr. Heater vs Dura Heat TT at a Glance

1

Best for Large Outdoor Spaces

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

Best for: Powerful and adjustable heat for outdoor work areas or large patios

• Heat output30,000-45,000 BTU adjustable
• Run timeApprox. 9.5 hours on high with 20 lb tank
• Safety featuresTip-over shut-off
• MountingMounts on 20 lb propane tank
• UseOutdoor only

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This heater mounts directly on a 20 lb propane tank and delivers adjustable heat from 30,000 to 45,000 BTUs with a 360-degree burner. It runs about 9.5 hours on high and includes a tip-over shut-off for safety. Its radiant heat suits outdoor-only use where strong, directional warmth is needed.

Pros

• High, medium, and low heat settings from 30,000 to 45,000 BTUs
• Runs 9.5 hours on high with a 20 lb tank
• Tip-over safety shut-off switch

Cons

• For outdoor use only, not safe indoors
• Requires a full 20 lb propane tank for operation

Skip it if: Skip if you need indoor use or a smaller, more portable heater.

2

Best for Indoor and Small Outd

Mr. Heater 9,000 BTU Portable Buddy Radiant Propane Heater

Best for: Heating up to 225 sq ft with safe indoor and outdoor use and portability

• Heat output4,000 or 9,000 BTU/hr
• Run time5.4 hours on low, 2.4 hours on high with 1 lb cylinder
• Safety featuresEmergency low oxygen shut-off
• CoverageUp to 225 sq ft
• UseIndoor and outdoor

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This portable heater offers two heat settings (4,000 and 9,000 BTUs) and is approved for indoor and outdoor use. It runs safely with a low oxygen shut-off system and can heat small rooms or tents. It uses a 1 lb propane cylinder for quick, short-term heat where portability and safety are priorities.

Pros

• Approved for indoor and outdoor use
• Low oxygen shut-off for safety
• Two heat settings: 4,000 and 9,000 BTUs

Cons

• Shorter run time: 5.4 hours on low, 2.4 hours on high
• Smaller coverage area, up to 225 sq ft

Skip it if: Skip if you need more heat output or longer run time outdoors.

Mr. Heater and Dura Heat TT Portable Propane Heater Comparison

Choose the Mr. Heater if you want powerful, adjustable radiant heat for focused warmth. Pick the Dura Heat TT for broader coverage and quieter operation in outdoor spaces.

The Mr. Heater Original 540-Degree delivers up to 45,000 BTU, heating large areas quickly with strong radiant heat. Its adjustable output lets you dial the heat to your needs, saving fuel and running costs. The Dura Heat TT offers about 30,000 BTU but spreads warmth over a wider area, making it better for less direct, more ambient heat outdoors.

Radiant heat, like Mr. Heater’s, warms objects and people directly, which feels quicker and more efficient in cold spots. The Dura Heat TT uses a fan to distribute heat, which can warm an area more evenly but may lose some heat to the air and create noise.

Both heaters include tip-over and overheat shut-off for safety and hold CSA certifications. Neither is designed for unattended use indoors without ventilation and a CO alarm. The fan in the Dura Heat TT adds some noise, which might bother sensitive users, while the Mr. Heater runs quietly.

Portability favors the Dura Heat TT, which weighs less and has a compact design with a handle. The Mr. Heater is heavier but still manageable for outdoor use. Both require propane tanks, but the Mr. Heater’s higher output means it consumes fuel faster, increasing operational costs if run long hours.

Maintenance is straightforward for both: keep the burner clean and check connections regularly. The Mr. Heater’s simpler radiant design means fewer moving parts than the Dura Heat TT’s fan system, possibly reducing wear over time.

Heat Output and Room Size

The Mr. Heater Original 540-Degree produces up to 45,000 BTU, making it suitable for heating spaces up to 1,000 square feet. The Dura Heat TT outputs around 30,000 BTU, effective for areas up to 1,200 square feet due to its fan-forced heat distribution.

BTU, or British Thermal Units, measure how much heat a heater can produce per hour. Higher BTU means more heat output, but coverage depends on how the heat is delivered. Radiant heaters like the Mr. Heater focus heat on objects and people directly in front of them. Fan heaters like the Dura Heat TT push warm air around, covering a wider area but with less intense heat in any one spot.

Adjustable heat settings matter. The Mr. Heater lets you vary output from low to high, conserving fuel when full power isn’t needed. The Dura Heat TT usually has fewer settings, running mostly at full or near-full output, which can waste fuel if you only need mild warmth.

Panel heaters, which spread heat via convection, warm the air slowly and evenly but don’t offer the direct warmth of radiant units. Fan heaters like the Dura Heat TT improve on panel heaters by moving warm air faster, which helps heat larger outdoor spaces. Radiant heaters like the Mr. Heater are better for quick, direct warmth in smaller or partially enclosed areas.

Choosing between panel and fin-style heaters depends on your space. The Dura Heat TT’s fan-driven heat covers more ground, making it better for patios or open garages. The Mr. Heater’s radiant heat suits workshops, tents, or other spots where you need to feel warmth quickly and directly.

For outdoor use, fan heaters typically offer better heat spread, but they use more fuel. Radiant heaters conserve fuel by targeting heat, but their coverage is less uniform. Adjustability and your space’s size and shape should guide your choice.

Running Cost

Running a propane heater costs less than electric if you have a good propane price. Propane contains about 91,500 BTU per gallon, and a typical portable propane heater uses about 1 to 2 pounds of propane per hour at full output. One gallon of propane weighs about 4.24 pounds, so a 1-pound per hour heater uses roughly a quarter gallon of propane hourly.

The Mr. Heater Original 540-Degree model delivers 45,000 BTU per hour. At full power, it consumes about half a gallon of propane per hour. The Dura Heat TT outputs around 38,000 BTU, using closer to 0.4 gallons per hour. Both heaters run efficiently, but the Mr. Heater uses slightly more fuel due to higher heat output.

To estimate cost, multiply gallons per hour by your propane price. For example, if propane costs $3.50 per gallon, running the Mr. Heater at full power for 8 hours costs about $14. The Dura Heat TT costs about $11.20 for the same period. Lower heat settings reduce fuel use proportionally and cost less.

The Mr. Heater offers adjustable heat control, letting you run it at lower BTU levels to save fuel when full power isn’t needed. The Dura Heat TT generally runs at a fixed setting, so you may use more fuel if you only need partial heat. Efficiency depends on how well you match heat output to your space.

Estimate your usage time realistically. If you run a heater for 4 hours a day during colder months, multiply the hourly cost by 4, then by the number of days. For a 30-day month, the Mr. Heater would cost about $210 at full power, and the Dura Heat TT about $168. Adjust these numbers based on your actual settings and propane prices.

Both models convert propane to heat efficiently, close to 100% for radiant heaters. The main difference in running cost comes from output and control. Choose the Mr. Heater if you want powerful, adjustable heat and can manage fuel use. Choose the Dura Heat TT for steady, slightly lower fuel consumption and broader area coverage.

Safety Features

Fuel-burning propane heaters produce carbon monoxide and must be used only with proper ventilation and a working CO alarm. Both Mr. Heater and Dura Heat TT include tip-over shutoff to cut fuel supply if knocked over, preventing fire hazards.

Low oxygen shutoff (ODS) sensors are critical for indoor use. They detect oxygen levels dropping below safe limits and automatically shut the heater off to prevent carbon monoxide buildup. Mr. Heater models typically include ODS sensors, making them safer for indoor or enclosed spaces when ventilation is adequate.

The Dura Heat TT is designed primarily for outdoor or well-ventilated environments. It may lack an ODS sensor or have limited indoor-use certification. Using it indoors without proper ventilation risks carbon monoxide poisoning, so it is not recommended.

1. Check for Tip-Over Protection
   Confirm the heater has an automatic shutoff if tipped over. Both models include this feature to stop fuel flow and reduce fire risk.
2. Verify Low Oxygen Shutoff (ODS) Sensor
   For indoor use, ensure the heater has an ODS sensor. Mr. Heater models generally include this; Dura Heat TT may not.
3. Use in Proper Ventilation
   Never run propane heaters indoors without ventilation. Even with ODS, fresh air is needed to prevent carbon monoxide buildup.
4. Follow Manufacturer’s Instructions
   Read and adhere to all safety guidelines. Do not use outdoor-only heaters indoors.

Look for UL or CSA certification on the heater label. These indicate the model meets safety standards. Check that the heater includes an automatic shutoff for overheating and tip-over protection, both standard on Mr. Heater and many Dura Heat models.

Propane heaters with ODS sensors, tip-over shutoff, and proper certification can be safe indoors only with ventilation and a CO alarm. Mr. Heater models generally offer better indoor safety features. Use the Dura Heat TT outdoors or in well-ventilated open spaces only.

Noise Level

Propane heaters generally make some noise while running, but they are not loud. The main sounds come from the propane gas burning and any fan if present. Both the Mr. Heater Original 540-Degree and the Dura Heat TT produce a low, steady hum typical of propane radiant heaters. Neither model has a fan, so they avoid the higher noise levels fan heaters create.

Quiet operation matters in settings where conversation, relaxation, or sleep is important. The steady, gentle sound of these heaters is usually easy to ignore. The Mr. Heater and Dura Heat TT both operate quietly enough for outdoor patios, garages, or workshops without causing distraction.

Propane heaters produce combustion gases and must be used with ventilation and a working carbon monoxide alarm. Noise varies by model and environment. Even quiet propane heaters may produce a low hum that some find distracting in bedrooms or offices. Electric heaters run silently and suit indoor use when noise is a concern. Propane models are better for outdoor or well-ventilated spaces where their mild noise is less noticeable.

Portability and Convenience

The Dura Heat TT is more portable than the Mr. Heater Original 540-Degree. It weighs about 20 pounds less and has a compact, integrated handle designed for easy carrying. The Mr. Heater Original is heavier and bulkier, better suited for stationary use or short moves.

Both heaters use simple, manual ignition systems. The Mr. Heater Original requires a match or lighter to light the burner, while the Dura Heat TT features a piezo ignition for quick, button-press starting. The Dura Heat TT’s ignition is more convenient for frequent starts and stops.

Transporting propane heaters safely means turning off the propane supply, disconnecting the tank, and carrying the heater upright. Use a sturdy case or secure the heater in a vehicle to prevent tipping or damage. Both models fit well in trucks or SUVs but the lighter Dura Heat TT is easier to load and unload.

For outdoor environments, both heaters are rugged and designed to withstand typical job site or patio conditions. The Dura Heat TT’s lower weight and handle make it easier to move around a yard or campsite. The Mr. Heater Original delivers more heat but is best for fewer moves due to its weight.

If portability is your priority, the Dura Heat TT is the better choice. If you want stronger heat and don’t mind a heavier unit, choose the Mr. Heater Original. Both require basic propane safety practices during transport and use.

For more on comparing propane heater features, see the detailed Mr. Heater BTU vs MH9BX Buddy Heater Comparison.

Lifespan and Maintenance

Propane heaters typically last between 5 and 10 years with proper care. The Mr. Heater models and the Dura Heat TT fall within this range when regularly maintained.

Maintenance mainly involves checking for propane leaks, cleaning the burner and air intake, and inspecting the hose and fittings. These tasks should be done before each heating season or after long storage periods.

The Mr. Heater units require you to clean the reflector and the burner assembly to prevent soot buildup, which can reduce efficiency. The Dura Heat TT also needs similar cleaning but has a simpler burner design that may be easier to access.

Both heaters use standard propane tanks and hoses, which should be replaced if cracked, brittle or damaged. Inspect the regulator and hose connection monthly during use for signs of wear or leaks.

The Mr. Heater Original 540-Degree model typically comes with a 1-year limited warranty covering defects in materials and workmanship. The smaller Mr. Heater Buddy models often have similar warranty terms. The Dura Heat TT usually offers a 90-day warranty, shorter than Mr. Heater’s but still covering basic defects.

Frequent maintenance extends lifespan and maintains safety. Neglecting cleaning or ignoring worn hoses increases risks of carbon monoxide leaks and fire hazards.

Frequently Asked Questions