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Nothing humbles a cabin owner faster than wearing a parka indoors because the electric heater quit with the power. A propane heater with its own thermostat keeps running without the grid and holds a steady temperature. After comparing 6 models, the Comfort Glow 11,000 BTU Propane Wall Heater leads our list of vented propane heaters with thermostat and blower. It puts out 11,000 BTU, covers up to 350 square feet and lets you dial in the room with an adjustable thermostat. The Heatstar By Enerco 18,000 BTU Propane Radiant Heater is our alternative pick, with 18,000 BTU for larger rooms.
Pros
- 11,000 BTU output heats up to 350 sq. ft.
- Thermostatic heat control for adjustable warmth
- Direct vent design needs no chimney
- No electricity required for operation
- Includes professional vent kit
Cons
- Requires minimum 100 lb. propane tank
- Needs two-stage low-pressure regulator
- Limited to rooms up to 350 sq. ft.
Pros
- 18,000 Btu radiant propane heat
- Top-mounted adjustable thermostat
- Electronic ignition uses 1 included AA battery
- Wall mount or free standing with included feet
- Low oxygen sensor built in
Cons
- Blower requires power to run
- 24.75 lb weight may limit easy moving
- Propane heaters require proper ventilation
Pros
- 10,000 BTU blue flame heat
- Heats up to 300 sq. ft.
- Thermostat cycles burner on and off
- O.D.S. with automatic shut-off
- Includes 10 ft hose and regulator
Cons
- Liquid propane gas only
- 300 sq. ft. coverage limit
- 15 lb weight may be less portable
Pros
- Fits 20,000 to 30,000 BTU vent-free Mr Heater units
- Compatible with 2016 to current radiant or blue flame models
- 18.5 CFM blower with 120V, 18W power
- 54 inch three-prong power cord included
- Built-in thermostat, with manual or thermostatic operation
Cons
- Accessory blower only, not a standalone heater
- Compatibility limited to listed Mr Heater 2016 to current models
- 54 inch cord may limit outlet placement
Pros
- 25,000 BTU output heats up to 750 sq. ft.
- Thermostatic heat control for adjustable warmth
- Direct vent design works without electricity during outages
- Approved for bedrooms, bathrooms, HUD, mobile and modular homes
- Stainless steel burner for quiet, noise free operation
Cons
- Requires a minimum 100 lb. propane tank with two-stage regulator
- Weighs 60 pounds, so wall mounting needs secure installation
- Installation is limited to wall thicknesses of 4.5 to 10 inches
Pros
- 36,500 BTU propane heat output
- Programmable thermostat for set temperatures
- Cool-to-the-touch cabinet for added safety
- Self-diagnostic electronics support safe operation
- 10-year heat exchanger warranty
Cons
- Requires propane and direct vent installation
- 108 lb weight makes placement a bigger project
- Fixed wall furnace, not a portable heater
What We Looked For in Propane Heaters With a Thermostat and Blower
A propane heater burns fuel inside the space you live or work in, so heat output has to be weighed against venting and carbon monoxide risk. According to the U.S. Fire Administration, an estimated 32,200 home heating fires caused about 190 deaths in a single year, which is why the criteria below lean hard on safety.
- Heat output and coverage: Among our picks, output runs from 10,000 to 36,500 BTU. The Comfort Glow 25,000 BTU Propane Wall Heater is the one to consider for a large open cabin, since its 25,000 BTU are rated for up to 750 square feet. That is more than double the 350-square-foot rating of our top pick. Match the rating to your floor area first, then let the thermostat trim the output.
- Indoor rating and oxygen depletion sensor: According to the U.S. Consumer Product Safety Commission, unvented gas heaters should have an oxygen depletion sensor that shuts the heater off if oxygen drops too low. The ProCom 10,000 BTU Propane Heater is a vent-free unit with a built-in sensor and automatic shut-off. Its 10,000 BTU are rated for up to 300 square feet, which suits an ice house or hunting shack. Two of our direct-vent picks are approved for bedrooms, bathrooms, mobile homes and HUD housing.
- Ventilation and carbon monoxide precautions: Three of our picks are direct-vent wall units that pull combustion air from outside and exhaust it back out. The Comfort Glow 11,000 BTU Propane Wall Heater uses a sealed burn system and ships with a vent kit for walls 4.5 to 10 inches thick. No chimney is needed. The Centers for Disease Control and Prevention still advises a battery-operated carbon monoxide detector in any home that burns fuel for heat.
- Fuel type, tank size and run time: Every heater here burns propane, and the CDC warns to use only the fuel a heater is designed for. Our two direct-vent wall units need at least a 100-pound tank and a two-stage low-pressure regulator. The smallest vent-free pick runs off a standard 20-pound cylinder through a 10-foot hose. A 100-pound tank holds five times the propane of a 20-pound cylinder, so it goes much longer between refills.
- Ignition and safety shut-offs: Our alternative pick lights with battery-powered electronic ignition that needs one AA battery. The direct-vent wall units use a safety pilot that stops the gas if the pilot goes out. If you want a blower, plan for an outlet: our blower-kit pick draws 18 watts at 120 volts and moves 18.5 CFM. The CPSC also recommends a heater certified by a nationally recognized testing laboratory.
- Size and portability: Our two direct-vent wall units run from 20 by 17 inches to 26.5 by 32.25 inches on the face. They weigh from 28 to 60 pounds, so plan on two people for the larger one. Our alternative pick mounts on a wall or stands on an included feet kit. The CPSC advises placing any freestanding heater on a level, hard, nonflammable surface rather than a rug.
We left out central furnaces and whole-house systems because they need professional installation and a different budget conversation. Water heaters and heated blankets do a different job. Outdoor-only patio heaters were excluded because they are not rated for enclosed spaces, which is exactly where these heaters live.
Other Propane Heaters Worth Considering
These are other propane heaters we looked at but did not put on our main list.
If your garage or shop is closer to a small house in size, the Mr. Heater 30,000 BTU Propane Radiant Heater is rated for up to 1,000 square feet. That is 30,000 BTU against 11,000 BTU for our top pick, at 26.2 pounds. It fits the size range of our blower-kit pick, which adds the circulation the radiant design lacks on its own.
A step down in the same family, the Mr. Heater 18,000 BTU Propane Radiant Heater covers up to 700 square feet and weighs 20.7 pounds. Its 18,000 BTU match our alternative pick, so the choice comes down to brand and mounting preference. It also has an adjustable thermostat.
And if raw coverage is the whole reason you are shopping, the Bilt Hard 30,000 BTU Propane Wall Heater is rated for up to 1,400 square feet. It pairs an adjustable thermostat with an oxygen depletion sensor. At 30,000 BTU versus 11,000 BTU for our top pick, it is far more heater than a single bedroom needs.
FAQs
Do vented propane heaters need electricity to run?
Our two direct-vent wall units are rated to run with no electricity, which makes them useful during outages. Blowers are the exception: our alternative pick runs its blower only with power, and our blower kit plugs into a 120-volt outlet.
How much clearance does a propane heater need from furniture?
The CPSC, CDC and U.S. Fire Administration all say to keep at least 3 feet between a space heater and bedding, drapes or furniture. The CDC adds that you should never cover a heater.
Do I still need a carbon monoxide detector with a vented heater?
Yes. The CDC recommends a battery-operated carbon monoxide detector in any home with fuel-burning heat, because a blocked vent or damaged pipe can still leak exhaust indoors.
How many BTU do I need for my room?
Among our picks, coverage ratings run from 300 to 750 square feet for the units that list one. Start with the rating that matches your floor area, then add output if the space is drafty or poorly insulated.
Sources
- CPSC Offers Tips to Prevent Home Fires From Space Heaters, U.S. Consumer Product Safety Commission. Fire-safety tips and required safety features for space heaters.
- Safety Guidelines: During & After a Winter Storm, Centers for Disease Control and Prevention. Winter heating safety for space heaters, kerosene heaters and carbon monoxide.
- Heating Fire Safety, U.S. Fire Administration. Home heating fire statistics and prevention messages.
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