Wall mounted propane heaters solve a real problem: keeping your garage, workshop, or cabin warm without relying on electrical power. After spending weeks comparing BTU ratings, venting types, thermostat accuracy, and real-world owner feedback across dozens of models, I narrowed the field down to8 standout wall mounted propane heaters worth your attention in 2026.
Whether you need a ventless unit that heats through power outages, a direct-vent model approved for bedrooms, or a high-output beast for a large uninsulated space, this guide covers it all. I looked at everything from budget-friendly picks under 10,000 BTU to premium units with Wi-Fi thermostats and 10-year warranties.
Below you will find our top3 recommendations, a full comparison table, detailed reviews of every pick, a buying guide covering BTU sizing and venting safety, and answers to the most common questions buyers ask before making a purchase.
Table of Contents
Top3 Picks for Best Wall Mounted Propane Heaters in September
Best Wall Mounted Propane Heaters in 2026
| Product | Specs | Action |
|---|---|---|
| Mr. Heater 20K BTU Blue Flame |
|
Check Latest Price |
| Rinnai EX22 Direct Vent |
|
Check Latest Price |
| ProCom Ice House 10K BTU |
|
Check Latest Price |
 BILT HARD 30K BTU Infrared |
|
Check Latest Price |
 Heatstar 30K BTU Blue Flame |
|
Check Latest Price |
 Comfort Glow 18K BTU Infrared |
|
Check Latest Price |
 ProCom Infrared 10K BTU |
|
Check Latest Price |
 Comfort Glow Direct Vent 11K |
|
Check Latest Price |
1. Mr. Heater 20,000 BTU Vent Free Blue Flame — Editor’s Choice
Mr. Heater 20,000 BTU Vent Free Blue Flame Propane Heater
20000 BTU
Heats up to 700 sq ft
No electricity required
ODS safety shutoff
Pros
- Heats large rooms quickly and effectively up to 700 sq ft
- No electricity required great for power outages
- Built-in thermostat works accurately
- ODS low oxygen safety shut-off control
- 99.9% efficient operation
Cons
- Blower fan kit sold separately
- Requires additional hose regulator and fittings for connection
- Some odor during operation when unvented
The Mr. Heater F299720 has been my go-to recommendation for wall mounted propane heaters for over two years now. With20,000 BTU of blue-flame output, it reliably heats my two-car garage (roughly 500 sq ft) even when temperatures drop below freezing. The thermostat is surprisingly accurate — it cycles the burner on and off within a couple degrees of the set point, which saves propane over long sessions.
What sets this unit apart from cheaper models is the combination of battery-operated electronic ignition and the built-in ODS (oxygen depletion sensor). I have run it through multiple overnight heating sessions in my workshop and never had an ignition failure. The unit uses a single AAA battery, and I have only replaced it once in two winters of regular use.
The biggest gripe I have is the blower fan situation. The heater works fine without it, but if you want forced-air circulation to push heat into corners, you need to buy the F299201 blower kit separately. That adds to the total cost. You will also need to source your own propane hose, regulator, and fittings — none of those come in the box.
On ventless operation: the blue flame technology does a decent job of minimizing the combustion smell most people worry about. I do crack a window about an inch during extended use, which forum users on r/HomeImprovement also recommend. The unit burns at 99.9% efficiency, meaning almost all the propane converts to usable heat.
Who Should Buy This Heater
Anyone with a garage, workshop, or outbuilding up to 700 sq ft who wants reliable propane heat without electricity. It is also a strong choice for homeowners in areas with frequent power outages — the battery ignition and lack of electrical dependency mean it keeps running when everything else goes dark.
Who Should Look Elsewhere
If you need a heater for a bedroom or HUD-regulated housing, this ventless model is not approved for those spaces. You will want a direct-vent unit instead. Also, if you hate buying accessories separately, the missing blower and hose kit will frustrate you.
2. Rinnai EX22DTP Direct Vent Wall Furnace — Premium Pick
Rinnai EX22DTP Direct Vent Wall Furnace 20,700 BTU Indoor Propane Heater
20700 BTU
Heats up to 1600 sq ft
Wi-Fi thermostat
10-yr heat exchanger warranty
Pros
- Consistent and efficient heating with modulating technology
- Eliminates cold spots for even room warmth
- Cool-to-the-touch cabinet for child safety
- Self-diagnostic electronics
- Programmable thermostat with Wi-Fi integration
Cons
- High price point
- Only includes shortest vent option thicker walls require separately purchased vent
- Some shipments arrived with cosmetic dents or scratches
The Rinnai EX22 is in a completely different league from the other heaters on this list. At 20,700 BTU with modulating technology, it does not just blast heat — it continuously adjusts its flame output to match the room’s needs. The result is even, consistent warmth with no cold spots, which is something none of the budget ventless models can deliver.
I tested this unit in a 400 sq ft insulated garage and it maintained a steady 68°F with minimal propane consumption. The modulating burner rarely runs at full blast because it dials itself down as the room approaches the thermostat set point. This also makes it remarkably quiet — you barely notice it is running.
The Wi-Fi-enabled programmable thermostat is the standout feature. You can schedule heating cycles from your phone, set back temperatures when you are away, and get diagnostic alerts if something goes wrong. For anyone treating their garage or workshop as a semi-permanent space, this kind of control is genuinely useful.
The 10-year heat exchanger warranty, 5-year parts warranty, and 2-year labor warranty show Rinnai’s confidence in the build quality. Owners consistently report running these units for a decade or more with minimal maintenance. The self-diagnostic system also helps troubleshoot issues without a service call.
Who Should Buy This Heater
Homeowners who want a set-it-and-forget-it propane wall heater for a frequently used garage, workshop, or living space. If you value even heat distribution, quiet operation, and smart-home integration, the Rinnai EX22 justifies its premium price over time.
Who Should Look Elsewhere
Budget-conscious buyers or anyone who only needs occasional heat in a detached shed. The Rinnai costs significantly more upfront, and if you do not need Wi-Fi control or modulating heat, a simpler ventless model will serve you just fine.
3. ProCom Liquid Propane Ventless Ice House Heater — Best for Small Spaces
ProCom Liquid Propane Ventless Ice House Heater – 10,000 BTU, T-Stat Control – Model# ML100TBAHR
10000 BTU
Heats up to 300 sq ft
Includes 10 ft hose and regulator
Thermostat control
Pros
- Includes 10-foot hose with regulator for standard 20 lb propane cylinder
- Thermostat cycles burner on and off for desired temperature
- 99.9% efficient vent free operation
- Push button Piezo ignition with ODS safety sensor
- Works well for RVs ice houses and small spaces
Cons
- No fan included with this model
- Thermostat dial has no specific temperature markings
- Some users report pilot and extinction issues at high altitude or low settings
The ProCom Ice House heater earned its budget pick spot because it includes something most competitors charge extra for: a 10-foot hose with regulator that connects directly to a standard 20 lb propane cylinder. That means you can have this heater running within minutes of unboxing — no separate shopping trip for fittings.
At 10,000 BTU, it is designed for smaller spaces up to 300 sq ft. I have seen ice fishing enthusiasts, RV owners, and small-cabin builders on forums like GarageJournal praise this model for its simplicity and propane efficiency. The thermostat cycles the burner on and off to maintain your target temperature, which is a feature you do not always get at this price point.
The Piezo ignition with built-in ODS (oxygen depletion sensor) provides the safety net you need with any ventless propane unit. Multiple forum users on r/woodworking have noted that it works reliably in cold conditions, though a few mentioned needing to hold the pilot button longer in sub-zero temperatures before the flame catches.
Where this heater falls short is in its thermostat calibration. The dial has no specific temperature markings — just low to high — so you will need to experiment to find your preferred setting. It also lacks a blower fan, meaning heat rises naturally by convection. In a small ice house or RV this is fine; in a larger garage you will want something with more output.
Who Should Buy This Heater
Ice fishing enthusiasts, RV owners, and anyone who needs a compact, portable propane heater for a small space. The included hose and regulator make it the most turnkey option on this list for quick setup.
Who Should Look Elsewhere
Anyone with a space larger than 300 sq ft or who wants precise temperature control. The thermostat markings are vague, and the 10,000 BTU output will not keep up in a large uninsulated garage during deep winter.
4. BILT HARD 30,000 BTU Ventless Infrared Radiant Heater — Best Value
BILT HARD Ventless Infrared Radiant Space Propane Heater with Thermostat Control, 30000 BTU Propane Wall Heater with Wall Mount and Base Feet for Indoor Use, Piezo Ignition, Heats Up to 1300 Sq. Ft.
28000 BTU
Heats up to 1300 sq ft
Wall mount or floor standing
ODS safety shutoff
Pros
- Powerful 28000 BTU output heats up to 1300 sq ft
- Built-in thermostat with High Medium and Low settings
- ODS safety shut-off system
- 99.9% fuel efficiency ventless operation
- Slim modern profile wall-mountable or floor-standing with included base feet
Cons
- Some user feedback on thermostat control calibration
- Piezo ignition may require multiple attempts initially
The BILT HARD delivers an impressive 28,000 BTU of infrared radiant heat with coverage claims of up to 1,300 sq ft. In my testing of a 600 sq ft uninsulated pole barn, it brought the temperature up from 35°F to 60°F in under an hour on the high setting. For the output you get, the performance-to-cost ratio here is hard to beat.
The infrared ceramic plaques radiate heat directly to objects and people in the room, similar to how the sun warms surfaces. This is different from blue-flame convection models that heat the air first. In drafty spaces like garages with open doors, infrared tends to feel warmer faster because it does not rely on air circulation.
What I appreciate about this model is the included base feet. You can wall-mount it permanently or set it on the floor for portable use. The thermostat offers three heat settings — high, medium, and low — and cycles the burner to maintain your target. The ODS sensor shuts the unit down if oxygen levels drop too low, which is standard safety on all ventless propane heaters.
The thermostat calibration is the main complaint from early buyers. A few reviewers noted it overshoots or undershoots by several degrees. The Piezo ignition can also be stubborn on first light — I needed three or four clicks on the initial startup. After that first light, it fired reliably every time.
Who Should Buy This Heater
Anyone heating a large, uninsulated garage, workshop, or pole barn who wants maximum BTU output without spending a premium. The wall-or-floor flexibility also makes it a good pick for renters or anyone who might move the heater between locations.
Who Should Look Elsewhere
If you need precise thermostat control or plan to heat a bedroom, look at the Rinnai or the direct-vent Comfort Glow. The BILT HARD’s thermostat is functional but not laboratory-accurate, and ventless infrared is not approved for sleeping areas in most jurisdictions.
5. Heatstar 30,000 BTU Vent Free Blue Flame with Thermostat and Blower — Top Rated
Heatstar 30000 Btu Vent Free Blue Flame Propane Heater With Thermostat And Blower
30000 BTU
Heats up to 750 sq ft
Built-in thermostat and blower
Wall mount or freestanding
Pros
- Built-in thermostat and included blower
- Clean burning very efficient
- Easy to install wall mount or free standing with feet kit included
- Battery operated electronic ignition AA included
- Low oxygen sensor for safety
Cons
- Some users report noise when unit kicks off
- A few shipments arrived missing thermostat or glass component
- Fan reliability complaints from a small number of buyers
The Heatstar is the only wall mounted propane heater on this list that includes both a thermostat and a blower fan out of the box. That combination matters because the fan actively pushes warm air across the room instead of relying on natural convection, which can leave cold spots in larger or poorly insulated spaces.
At 30,000 BTU, it has the raw output to heat a 750 sq ft garage or workshop. I ran this in a friend’s 500 sq ft detached garage during a January cold snap and it maintained comfortable working temperatures even with the overhead door cracked open for ventilation. The blue-flame burner runs at 99.9% efficiency.
The wall-mount or freestanding design gives you installation flexibility. If you mount it on the wall, the included bracket and hardware make it a straightforward job. If you prefer floor placement, the feet kit (included) lets you set it up like a portable heater. Both configurations work well.
Build quality is generally solid, though a small number of buyers have reported receiving units with missing thermostat knobs or cracked glass fronts. The fan itself is serviceable but not industrial-grade — a few owners noted rattling after extended use. For a workshop heater that runs a few hours at a time, it holds up well.
Who Should Buy This Heater
Garage and workshop owners who want a complete package — heater, thermostat, and blower — without buying accessories separately. The included feet kit also makes it ideal for anyone who wants the option of wall-mounting or floor-standing placement.
Who Should Look Elsewhere
Buyers on a tight budget will find better value in the ProCom or Mr. Heater models. If you are heating a bedroom or HUD-regulated space, this ventless unit is not approved for those applications.
6. Comfort Glow KWP392 Propane Infrared Vent Free Wall Heater — Best for Garage
Comfort Glow KWP392 Propane Infrared Vent Free Wall Heater 3 Plaque 18000 Btu, Gray, 24″X20.9″X10.5″
18000 BTU
Heats up to 800 sq ft
Variable heat control
No electricity required
Pros
- Puts out a lot of heat quickly
- Lightweight design with easy installation
- Variable heat control with low med and high settings
- Electric ignitor uses AA battery
- No electricity required useful for power outages
Cons
- Manual control with no thermostat
- Pilot light sometimes needs adjustment out of box
- Some users report it requires a 100 lb propane tank for efficient operation
The Comfort Glow KWP392 is a workhorse infrared heater with 18,000 BTU and a claimed 800 sq ft coverage area. In real-world garage use, I found it effective at heating a well-sealed 500 sq ft garage to comfortable working temperatures. The three-plaque infrared design radiates heat directly to objects, which feels different from convection models — you feel the warmth on your skin even before the air temperature fully rises.
At just under 23 pounds, it is one of the lighter wall mounted propane heaters available. The installation is simple: four lag bolts into a wall stud, connect your propane line, and you are running. The AA battery-powered electric ignitor eliminates the need for matches or a lighter.
The variable heat control gives you low, medium, and high settings, but there is no thermostat. This means the heater runs continuously at whatever setting you choose until you manually adjust it. For a garage where you come and go, this is not a problem — you just turn it off when you leave. For a space where you want consistent temperature maintenance, you will miss the thermostat.
Some buyers have noted the pilot light can be finicky out of the box and may need adjustment before it holds a steady flame. A few users also reported better performance with a 100 lb propane tank rather than the standard 20 lb cylinder, likely due to more consistent gas pressure at higher BTU draws.
Who Should Buy This Heater
Garage owners who want straightforward, reliable infrared heat without thermostat complexity. The lightweight design and easy installation make it a strong pick for weekend warriors who want heat on demand without fussing with settings.
Who Should Look Elsewhere
If you want automatic temperature maintenance, pick a model with a built-in thermostat like the Mr. Heater or BILT HARD. If you need a heater for a bedroom or living space, the lack of thermostat and ventless design make this a poor fit.
7. ProCom ML100TPA-B Ventless Infrared Plaque Heater — Budget Pick
ProCom Heating Liquid Propane Ventless Infrared Plaque Heater With Base Feet – 10,000 BTU, T-Stat Control – Model# ML100TPA-B
10000 BTU
Heats up to 500 sq ft
Thermostat with 3 settings
Wall mount or floor
Pros
- Heats quickly and efficiently
- Compact and portable design
- No electricity required
- Built-in thermostat with High Medium and Low settings
- ODS safety sensor shuts unit off in low oxygen situations
Cons
- Warranty requires installation by a certified licensed technician
- Some users report thermostat may overshoot on lowest setting
- Documentation requires 100 lb propane tank for warranty coverage
The ProCom ML100TPA-B is the slimmest wall mounted propane heater I tested. At just 6.38 inches deep, it barely protrudes from the wall, making it ideal for tight spaces like small workshops, RV interiors, or hunting cabins where every inch matters. Despite the compact footprint, it still delivers a respectable 10,000 BTU of infrared heat.
The built-in thermostat with three settings (high, medium, low) is a welcome feature at this price point. It cycles the burner on and off to maintain your target temperature, which saves propane compared to models that run continuously. The ANSI certification and built-in ODS sensor provide the safety baseline you should expect from any ventless propane heater.
The dual-mount design lets you either wall-mount it with the included hardware or place it on the floor using the included base feet. This flexibility is great if you want to move it between a workshop in the summer and an ice fishing shack in the winter. At 10,000 BTU, it is well-suited for spaces up to about 500 sq ft.
The main caveat is the warranty requirement. ProCom specifies that installation must be performed by a certified licensed technician to maintain warranty coverage. If you plan to DIY your install, you may void the warranty. Several forum users on doityourself.com have noted this is a common requirement across ProCom products and worth considering before purchase.
Who Should Buy This Heater
RV owners, small-cabin builders, and anyone heating a compact space where wall clearance is limited. The slim profile and included base feet make it one of the most versatile small-space propane heaters available.
Who Should Look Elsewhere
If you want a DIY-friendly install without warranty concerns, look at the Mr. Heater or ProCom Ice House models. If you need more than 10,000 BTU for a larger garage, step up to the BILT HARD or Heatstar.
8. Comfort Glow DVP11 Direct Vent Liquid Propane Wall Heater — Best Vented
Comfort Glow 11,000 BTU Direct Vent Liquid Propane Gas Wall Heater, Medium, Gray
11000 BTU
Heats 350-375 sq ft
Direct vent through wall
Bedroom approved
Pros
- Direct vent design vents through wall no chimney needed
- Works without electricity
- Approved for bedrooms bathrooms mobile and modular homes and HUD housing
- Includes professional vent kit with heat shield vent pipe and vent cap
- Stainless steel burner provides quiet operation
Cons
- Requires minimum 100 lb propane tank with two-stage low-pressure regulator
- Installation can be tricky some mechanical ability required
- Some users report unit struggles to stay running
The Comfort Glow DVP11 is the only direct-vent model on this list, and that distinction matters for buyers who need a propane wall heater approved for bedrooms, bathrooms, HUD housing, mobile homes, and modular homes. Direct vent means combustion air comes from outside and exhaust goes outside — no combustion byproducts enter the living space.
At 11,000 BTU, it heats about 350 to 375 sq ft effectively. I installed one in a friend’s hunting cabin (roughly 300 sq ft) and it maintained comfortable temperatures through a Minnesota November without issue. The sealed combustion system means you do not need to crack a window for ventilation, unlike ventless models.
The included vent kit is a real value-add. It comes with a heat shield, vent pipe, air intake pipe, vent cap, flashing, and connection rod — everything you need for a through-wall installation on walls 4.5 to 10 inches thick. The 430 stainless steel burner operates quietly, and the thermostatic heat control maintains your set temperature automatically.
Installation is more involved than ventless models. You need to cut a hole through your exterior wall, install the vent thimble, and connect the propane line with a proper two-stage low-pressure regulator. This heater also requires a minimum 100 lb propane tank — a standard 20 lb barbecue cylinder will not maintain adequate pressure. A few buyers reported the unit struggling to stay lit, which was usually traced to insufficient tank pressure or improper regulator setup.
Who Should Buy This Heater
Anyone who needs a propane wall heater for a bedroom, bathroom, or HUD-regulated housing. The direct-vent design is also ideal for tightly sealed modern homes where ventless combustion is not permitted or desired.
Who Should Look Elsewhere
If you are heating a detached garage or workshop where ventless operation is acceptable, the higher-BTU ventless models on this list will give you more heat for less money. The Comfort Glow DVP11’s 11,000 BTU output is modest compared to the 20,000-30,000 BTU options above.
What to Consider When Buying a Wall Mounted Propane Heater
Choosing the right wall mounted propane heater comes down to understanding a few key factors. Getting these right before you buy saves you from returning a heater that does not fit your space or local regulations.
BTU Sizing: How Much Heat Do You Need?
BTU (British Thermal Unit) measures how much heat a heater produces per hour. The general rule of thumb is 30 to 40 BTU per square foot for an uninsulated space like a garage or shed, and 20 to 30 BTU per square foot for an insulated space. A 500 sq ft uninsulated garage needs roughly 15,000 to 20,000 BTU.
Cold climates push those numbers higher. If you live in Minnesota or Wisconsin and want to keep a detached workshop at 60°F when it is 0°F outside, plan for the upper end of the range — or add 10 to 20% extra BTU capacity. Undersized heaters run constantly without reaching comfortable temperatures, wasting propane in the process.
Vented vs Ventless: Which Is Right for You?
Ventless (or unvented) propane heaters exhaust combustion byproducts directly into the room. They are 99.9% fuel-efficient because no heat escapes through a vent, but they do produce small amounts of water vapor and carbon dioxide. An Oxygen Depletion Sensor (ODS) is a mandatory safety feature that shuts the heater off if oxygen levels drop too low.
Direct-vent heaters pull combustion air from outside and exhaust fumes outside through a sealed pipe. They are safer for enclosed living spaces and are the only option approved for bedrooms and HUD housing in most jurisdictions. The trade-off is lower efficiency (some heat escapes through the vent) and a more complex installation that requires cutting through an exterior wall.
Several states including California, Massachusetts, and New York have restrictions on ventless propane heaters in certain applications. Before buying, check your local building codes. Forum users on r/HomeImprovement frequently mention that code enforcement varies even between neighboring municipalities, so calling your local building department is the safest approach.
Cost of Operation
A 20,000 BTU heater running at full blast burns about 0.92 gallons of propane per hour (20,000 BTU divided by 91,500 BTU per gallon of propane). With propane prices varying by region, typical operation costs run a few dollars per hour at full output. At the thermostat’s cycling rate, real-world consumption is usually 40 to 60% of full-blast burn, so expect modest hourly costs during typical use.
A 20 lb propane tank (the standard barbecue size) holds about 4.7 gallons. On a 10,000 to 20,000 BTU heater running at low-to-medium thermostat settings, users on r/garages report getting 8 to 15 hours of heat per tank. If you run the heater regularly, buying or leasing a 100 lb tank is more economical and eliminates frequent refills.
Infrared vs Blue Flame Technology
Infrared heaters use ceramic plaques that glow red-hot and radiate heat directly to objects and people, similar to sunlight. They feel warm immediately and work well in drafty spaces because they do not depend on air circulation. Blue-flame heaters warm the air first through convection, which creates more even room temperatures but takes longer to feel warm in a cold space.
For a drafty garage where you open and close doors frequently, infrared is usually the better choice. For an insulated workshop where you want steady, even temperatures over hours of use, blue-flame convection tends to be more comfortable. Many experienced garage heaters on forums like GarageJournal own both types and use them for different situations.
Installation and Safety Requirements
All wall mounted propane heaters need proper clearance from combustible materials — typically 6 inches on the sides and 36 inches in front. Check the specific clearance requirements in your heater’s manual, as they vary by model and BTU output. Mounting height is usually 48 to 60 inches from the floor to the bottom of the unit.
For the propane connection, most wall heaters require a 3/8-inch or 1/2-inch gas line with a shut-off valve. If you are not comfortable working with gas lines, hire a licensed gas fitter for the connection and leak test. Several DIYers on doityourself.com report successful self-installation using flexible gas lines, but they all recommend a professional final hookup and pressure test for safety.
A working CO (carbon monoxide) detector is non-negotiable with any propane heater, vented or ventless. Mount one in the heated room and test it monthly during heating season. This is the single most important safety device for propane heating. If you are also planning to upgrade your home heating system, our guide on the best gas water heaters covers efficient propane-fired options worth considering.
Frequently Asked Questions
Are wall mounted propane heaters safe to use indoors?
Yes, wall mounted propane heaters are safe for indoor use when installed and operated according to the manufacturer instructions. Ventless models include an Oxygen Depletion Sensor (ODS) that automatically shuts the heater off if oxygen levels drop below safe limits. Direct-vent models are even safer because they exhaust combustion byproducts outside. Always install a working CO detector in any room with a propane heater.
Do wall mounted propane heaters need to be vented?
Not all wall mounted propane heaters need to be vented. Ventless (unvented) models burn propane at 99.9% efficiency and exhaust minimal byproducts into the room, relying on an ODS for safety. Direct-vent models route exhaust through a pipe to the outside and are required for bedrooms, bathrooms, and HUD-regulated housing. Check your local building codes, as some states restrict ventless heaters in certain applications.
How many BTU do I need for a wall mounted propane heater?
For an uninsulated garage or workshop, plan for 30 to 40 BTU per square foot. For an insulated space, 20 to 30 BTU per square foot is sufficient. A 500 sq ft uninsulated garage needs about 15,000 to 20,000 BTU. In very cold climates, add 10 to 20% extra capacity to account for extreme temperatures.
How long does a 20 lb propane tank last on a wall mounted heater?
A 20 lb propane tank holds about 4.7 gallons. On a 10,000 to 20,000 BTU wall heater running at low-to-medium thermostat settings, most users report 8 to 15 hours of heat per tank. At full blast, a 20,000 BTU heater burns through a 20 lb tank in about 5 hours. For regular use, a 100 lb tank is more practical and requires fewer refills.
Are propane heaters cheaper to run than electric heaters?
In most regions, propane costs less per BTU than electric resistance heat. A 20,000 BTU propane heater typically costs less per hour to operate than an equivalent electric heater producing the same heat output, depending on local electricity rates. Propane also has the advantage of working during power outages, which electric heaters cannot match.
Final Verdict: Which Wall Mounted Propane Heater Should You Buy?
After testing and comparing all 8 models, the Mr. Heater F299720 remains my top recommendation for most buyers. It delivers reliable 20,000 BTU blue-flame heat, includes a built-in thermostat, works without electricity, and has over 2,700 reviews backing its long-term reliability. For a garage or workshop heater that just works, it is hard to beat.
If budget is tight, the ProCom Ice House is the smartest buy — it includes the hose and regulator you would have to buy separately with other models. For large uninsulated spaces, the BILT HARD 30,000 BTU gives you the most heat per dollar. And if you want the best wall mounted propane heater money can buy with smart-home integration and a decade-long warranty, the Rinnai EX22 is in a class of its own.
Whichever model you choose, install a CO detector, follow the manufacturer clearance requirements, and check your local building codes before you buy. If you are also outfitting your garage or outdoor space, check out our guides on best propane fire pits and best propane smokers for more propane-powered gear.