Best Vented Garage Heater in 2025
Updated on July 2025
#1
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- Propane Heater Garage Model: Reznor UDXC units work as a propane heater for indoor use and make for a great heating solution for many kinds of commercial, industrial, or residential spaces such as workshops, warehouses, factories, and more.
- High Performance: The UDXC-45 is rated for 45,000 BTU with two heating output levels (low fire 26,145 BTU for milder cool days / high fire 37,350 BTU for the coldest times of the year) and achieves an 83% thermal efficiency rating.
- Gas Shop Heaters: The UDXC indoor gas heater comes with threaded-nut retainers at four suspension points for use as a ceiling mount hanging garage furnace or gas wall heater, depending on the bracket used. (Mounting sold separately.)
- Product Overview: Listing includes Reznor gas unit heater, vertical category 1 double wall B-vent kit for venting out of a roof, and easy to install LP Kit which converts the unit heater from natural gas to liquid propane operation.
- Advanced Tech: This Reznor garage heater is built to last with a TCORE2 titanium-stabilized aluminized steel heat exchanger, patented single-burner combustion, integrated circuit board with display, built-in disconnect, and status-indicating LED.
- Forced Air Heater Unit: UDXC garage heater propane models operate quietly with a vibration/noise isolated low static pressure axial propeller fan and power venting which provides optimal performance in most indoor environments.
- Upgraded Specs: An improved cabinet design sets the UDXC propane gas heaters for indoor use apart from older UDX / UDZ models, including a removable front face and a hinged access door panel with a quarter-turn latch.
- Warranty Coverage: A 9 Year Heat Exchanger, Burner, and Flue Collection Box Assembly; 4 Year All Electrical and Mechanical Components. To ensure a valid warranty, installation must comply with local and state codes.
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- Propane Heater Garage Model: Reznor UDXC units work as a propane heater for indoor use and make for a great heating solution for many kinds of commercial, industrial, or residential spaces such as workshops, warehouses, factories, and more.
- High Performance: The UDXC-45 is rated for 45,000 BTU with two heating output levels (low fire 26,145 BTU for milder cool days / high fire 37,350 BTU for the coldest times of the year) and achieves an 83% thermal efficiency rating.
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#2
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- Quiet operation
- Versatile certification for residential, commercial, and industrial applications
- Compact design with a neutral color scheme
- Quick and easy installation with accessible field wiring and knockouts
- Standardized power exhaust allows for simple side-wall or roof venting using a small-diameter pipe
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- Quiet operation
- Versatile certification for residential, commercial, and industrial applications
- Compact design with a neutral color scheme
- Quick and easy installation with accessible field wiring and knockouts
- Standardized power exhaust allows for simple side-wall or roof venting using a small-diameter pipe
#3
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- Includes Mr. Heater Big Maxx Natural Gas Heater, 2 angle brackets, and Liquid Propane conversion kit (thermostat, hose, and regulator not included)
- Dimensions: 29.33” L x 15.50” W x 26.37” H; Coverage: 2000 sq. ft.; Performance: 80,000 BTU; Requires 2.3 Amps and 120 V; Minimum 8 ft. clearance needed
- Compatible with natural gas and designed for category 1 vertical and category 3 horizontal venting
- Features powered exhaust for versatile venting options and spark ignition with self-diagnostic control module
- Reliable operation with safety features; limited 3-year warranty on parts and burners
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- Includes Mr. Heater Big Maxx Natural Gas Heater, 2 angle brackets, and Liquid Propane conversion kit (thermostat, hose, and regulator not included)
- Dimensions: 29.33” L x 15.50” W x 26.37” H; Coverage: 2000 sq. ft.; Performance: 80,000 BTU; Requires 2.3 Amps and 120 V; Minimum 8 ft. clearance needed
- Compatible with natural gas and designed for category 1 vertical and category 3 horizontal venting
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#4
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- Provides 50,000 BTU per hour, suitable for spaces up to 1250 sq. ft.
- Equipped with a powered exhaust for flexible venting options, either vertically or horizontally.
- Includes convenient outside access to thermostat, A/C terminals, and gas connections.
- Conversion kit for Natural Gas to Liquid Propane and 2 angle brackets for ceiling mounting are included.
- Requires a minimum clearance of 8 ft from floor to heater base; limited warranty covers parts and burners for 3 years, and heat exchanger defects for 10 years.
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- Provides 50,000 BTU per hour, suitable for spaces up to 1250 sq. ft.
- Equipped with a powered exhaust for flexible venting options, either vertically or horizontally.
- Includes convenient outside access to thermostat, A/C terminals, and gas connections.
- Conversion kit for Natural Gas to Liquid Propane and 2 angle brackets for ceiling mounting are included.
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#5
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- Delivers 30,000 BTUs of infrared heat, effectively warming spaces up to 1,000 sq. ft.
- Utilizes multiple burner tiles for even radiant heat distribution, ideal for cold rooms and sunrooms.
- Consumes only 1.389 lbs of propane per hour, offering up to 14.39 hours of heating at maximum output with a minimum 20 lb LP cylinder.
- Equipped with a low-oxygen shut-off system for safety, immediately stopping gas flow when oxygen levels drop.
- Features a built-in thermostat for easy temperature control and a battery-powered ignition for quick startup.
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- Delivers 30,000 BTUs of infrared heat, effectively warming spaces up to 1,000 sq. ft.
- Utilizes multiple burner tiles for even radiant heat distribution, ideal for cold rooms and sunrooms.
- Consumes only 1.389 lbs of propane per hour, offering up to 14.39 hours of heating at maximum output with a minimum 20 lb LP cylinder.
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#6
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- Heats up to 1,000 sq. ft. with 30,000 BTUs, suitable for elevations up to 4,500 ft.
- Includes thermostat for temperature regulation and battery-powered ignition for easy start-up.
- Equipped with low oxygen shut-off system for safety, CSA certified for reliable operation.
- Utilizes blue flame technology for efficient convection heating, consuming 1.389 lbs of fuel per hour.
- Versatile installation options with included legs and mounting hardware for wall or free-standing setup.
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- Heats up to 1,000 sq. ft. with 30,000 BTUs, suitable for elevations up to 4,500 ft.
- Includes thermostat for temperature regulation and battery-powered ignition for easy start-up.
- Equipped with low oxygen shut-off system for safety, CSA certified for reliable operation.
- Utilizes blue flame technology for efficient convection heating, consuming 1.389 lbs of fuel per hour.
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#7
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- Direct vent design for safer operation
- High efficiency heating solution for garages
- Compact size suitable for limited space
- Easy installation with clear instructions
- Durable construction for long-lasting use
- Quiet operation minimizes noise disruption
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- Direct vent design for safer operation
- High efficiency heating solution for garages
- Compact size suitable for limited space
- Easy installation with clear instructions
- Durable construction for long-lasting use
- Quiet operation minimizes noise disruption
#8
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- Liquid propane ready, fuel conversion not allowed
- Infrared technology radiates heat to warm objects directly
- Variable heat output from 6,000 to 30,000 BTUs per hour, covering up to 1,000 sq. ft.
- Customizable heat settings with a knob for precise control
- No electricity required for reliable backup heating
- Includes a 1-year warranty
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- Liquid propane ready, fuel conversion not allowed
- Infrared technology radiates heat to warm objects directly
- Variable heat output from 6,000 to 30,000 BTUs per hour, covering up to 1,000 sq. ft.
- Customizable heat settings with a knob for precise control
- No electricity required for reliable backup heating
- Includes a 1-year warranty
#9
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- 20,000 BTU heater for spaces up to 500 square feet
- Radiant heat burner capable of heating areas up to 700 square feet
- Equipped with an automatic low oxygen shut-off system (ODS), CSA certified
- May experience shutdowns at altitudes over 4,500 feet due to pilot/ODS safety mechanisms
- Includes thermostat, legs, and wall mounting hardware for installation
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- 20,000 BTU heater for spaces up to 500 square feet
- Radiant heat burner capable of heating areas up to 700 square feet
- Equipped with an automatic low oxygen shut-off system (ODS), CSA certified
- May experience shutdowns at altitudes over 4,500 feet due to pilot/ODS safety mechanisms
- Includes thermostat, legs, and wall mounting hardware for installation
#10
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- Provides up to 30,000 BTUs using natural gas, suitable for spaces up to 1,000 sq. ft. and effective at altitudes up to 4,500 feet.
- Includes a built-in thermostat for precise temperature control and comes with a battery for easy electric ignition.
- Features a blue flame burner for efficient heating, consuming .030 MCF per hour and ensuring even warmth.
- Equipped with an oxygen depletion sensor for safety, ensuring secure operation.
- Offers dual mounting options: can be wall-mounted with included brackets or placed securely on the floor.
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- Provides up to 30,000 BTUs using natural gas, suitable for spaces up to 1,000 sq. ft. and effective at altitudes up to 4,500 feet.
- Includes a built-in thermostat for precise temperature control and comes with a battery for easy electric ignition.
- Features a blue flame burner for efficient heating, consuming .030 MCF per hour and ensuring even warmth.
- Equipped with an oxygen depletion sensor for safety, ensuring secure operation.
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