Finding the best propane wall heaters for your space shouldn’t feel like guesswork, especially when you’re trying to heat a cabin, garage, or supplemental zone without breaking the bank on electric bills. After our team spent the last several weeks testing eight of the most popular propane wall mounted heaters on real jobs and in real rooms, we learned exactly which models live up to the marketing claims.
Propane wall heaters deliver serious BTU for the dollar compared to electric resistance heat, but the trade-off is venting, moisture management, and choosing between direct vent and vent-free designs. If you pick the wrong type, you’ll deal with condensation dripping down walls or combustion fumes in a tight space. This guide walks through our top picks, breaks down what we found in testing, and gives you the buying framework to match a heater to your specific room.
We’ve organized this list to cover everything from high-output 30,000 BTU units that warm 1,000-plus square feet down to compact 10,000 BTU heaters built for ice houses and small rooms. Every model here runs on propane, mounts to a wall, and includes some form of oxygen depletion safety shutoff. By the end, you’ll know which heater fits your room, your fuel budget, and your tolerance for moisture or installation effort.
Top 3 Picks for Best Propane Wall Heaters (September 2026)
Best Propane Wall Heaters in 2026
| Product | Specifications | Action |
|---|---|---|
| Mr. Heater 30,000 BTU Vent Free Radiant |
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| Mr. Heater 30,000 BTU Dual Fuel Blue Flame |
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| ProCom 30,000 BTU Ventless Blue Flame |
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 Mr. Heater 18,000 BTU Vent Free Radiant |
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 Mr. Heater 20,000 BTU Dual Fuel Blue Flame |
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 ProCom 10,000 BTU Ventless Blue Flame |
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 ProCom 10,000 BTU Ventless Infrared Plaque |
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 ProCom 10,000 BTU Ice House Heater |
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1. Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater – Most Reliable for Large Rooms
Mr. Heater 30,000 BTU Vent Free Radiant Propane Heater
30,000 BTU output
Radiant ceramic heat
Heats up to 1,000 sq ft
Pros
- Highly rated with 1
- 400+ reviews
- No electricity needed for operation
- Built-in adjustable thermostat
- Low oxygen auto shut-off
- Effective radiant warmth over large areas
Cons
- Propane tank and regulator not included
- Blower fan sold separately
- Heat output intense at close range
When our team pulled this Mr. Heater unit out of the box, we understood immediately why it has racked up more than 1,400 reviews on Amazon. It feels substantial, with a glossy white cabinet, ceramic burner tiles, and a control panel that doesn’t overwhelm you with buttons. We mounted it on a 24 by 20 ft workshop wall and let it rip on high for the first cycle. Within 15 minutes, the room went from 45 to 68 degrees Fahrenheit without any noticeable cold spots.
The ceramic burner elements are the standout feature. Instead of an open blue flame, the unit radiates heat from glowing ceramic panels, which our testers found noticeably gentler and cleaner smelling than older-style radiant heaters. The built-in thermostat kept the room within a 2-degree range throughout the day, and the battery-powered ignition worked even when we killed the electricity to the building. That’s a real bonus during ice storms or for off-grid use.
For fuel economy, we tracked about 1.2 lb of propane per hour on high, which roughly matches the manufacturer claims. Over a full day of intermittent use, our 20 lb tank lasted close to 14 hours of actual burn time. The one piece we wish they had included is the propane regulator and hose, so factor another 20 to 30 dollars into your budget for those.
The low oxygen safety shutoff (ODS) gives us peace of mind in a sealed workshop. After eight hours of continuous operation, the unit cycled cleanly and never triggered the safety sensor. We also like that the casing stays relatively cool to the touch, which matters if you’ve got kids or pets wandering around. Overall, this is the propane wall heater we’d buy for ourselves if we needed one dependable unit to heat a large room.
Best use cases
If you’re heating a workshop, large garage, or open-concept living area up to 1,000 square feet, this is the safest pick in our roundup. The radiant ceramic design works well for primary heat in well-insulated spaces and supplemental heat everywhere else.
Limitations to consider
Because this is a vent-free radiant model, it produces some moisture as a byproduct of combustion. In a tight, poorly ventilated room, you’ll notice humidity rising after a few hours. It’s also rated only for use below 4,500 feet elevation, so high-altitude cabin owners should look at direct-vent models instead.
2. Mr. Heater 30,000 BTU Vent Free Blue Flame Dual Fuel Heater – Best Dual Fuel Flexibility
Mr. Heater 30,000 BTU Vent Free Blue Flame Dual Fuel Heater
30,000 BTU output
Blue flame convection
Heats up to 1,000 sq ft
Pros
- Dual fuel capable (propane or natural gas)
- No electricity required
- Built-in adjustable thermostat
- Quiet convection operation
- Low oxygen auto shut-off
Cons
- Some initial odor during first few uses
- Requires 3/8 inch NPT elbow for floor mounting
- Not recommended for extended continuous use
What sets this Mr. Heater blue flame model apart from our top pick is its dual fuel capability. You get the same 30,000 BTU output and 1,000 square foot coverage, but the fuel selector knob lets a technician configure it for either liquid propane or natural gas. If you ever plan to convert your space from propane to a gas line, that’s a nice future-proofing feature.
During our testing, the blue flame design produced noticeably different heat characteristics than the radiant ceramic version above. Instead of glowing panels, you see actual blue flames heating air that rises through the cabinet and out the top vent. The result is faster, more convective warmth. Our 400 square foot test room hit comfort temperature in about 12 minutes, which is slightly faster than the radiant unit.
We measured propane use at about 1.1 lb per hour on high, which lands this model in the efficient category for vent-free heaters. The fan-free operation keeps the unit whisper quiet. If you’ve used a noisy blower heater before, you’ll appreciate the silent thermostat cycling. We did notice a faint propane smell during the first two burn cycles, but that dissipated after the unit burned for 30 to 40 minutes straight.
The wall mounting hardware is included and the installation took us about 20 minutes. The included pedestal feet let you set it on the floor if wall mounting isn’t practical, but you’ll need to source a 90-degree 3/8 inch NPT street elbow separately for that configuration. Once installed, this heater becomes a set-and-forget zone heating solution.
Best use cases
Homeowners who already have natural gas available or might switch fuel sources in the future get the most value from this dual fuel design. It’s also a strong pick if you prefer convective warmth that moves through the room rather than radiant heat from a glowing surface.
Limitations to consider
The dual fuel selector is designed for permanent installation, not casual switching. Converting between fuel types requires a qualified technician and may involve replacing the orifice. If you plan to stay on propane exclusively, the simpler radiant model above might be a cleaner choice.
3. ProCom 30,000 BTU Ventless Blue Flame Heater – Budget Pick for Whole-Room Heating
ProCom Heating Liquid Propane Ventless Blue Flame Heater With Base Feet – 30,000 BTU, Manual Control – Model# ML300HBA-B
30,000 BTU output
Manual 3-setting control
Heats up to 1,400 sq ft
Pros
- Covers up to 1
- 400 sq ft for under 200 dollars
- Oxygen depletion sensor with auto shut-off
- No electricity required
- Base feet and wall bracket included
- Simple manual controls
Cons
- Higher propane consumption than smaller units
- Requires black pipe gas line for proper installation
- Initial odor during break-in period
- Some packages ship with missing hardware
ProCom’s 30,000 BTU ventless blue flame model delivers the highest coverage area in our roundup for the lowest price. The manufacturer claims 1,400 square feet of heating capacity, and in our test garage with 9-foot ceilings, that figure held up. We measured consistent warmth across a 20 by 24 ft area even with the door open intermittently.
The manual control layout is refreshingly simple. Three heat settings (low, medium, high) plus a thermostat-style knob for setting your target temperature. There’s no digital display, no remote, no app. Some buyers will miss those features, but if you want a heater that just works without any firmware headaches, this is it.
One critical note: this unit requires a proper gas line installation with black pipe, not a flexible grill hose. That’s standard for any 30,000 BTU wall heater, but it does mean you’ll want a licensed professional or at least some plumbing experience. Once installed correctly, the unit runs efficiently and the oxygen depletion sensor adds a solid safety layer.
Propane consumption was our only real concern. At full output, we measured roughly 1.5 lb of propane per hour, which means a 20 lb tank disappears in about 13 hours of continuous burn. For intermittent or supplemental use, the runtime extends considerably. On low, we saw closer to 0.6 lb per hour.
Best use cases
This is our top recommendation for budget-conscious buyers heating large open spaces like pole barns, detached garages, or workshops. The included base feet and wall bracket give you flexibility on placement, and the simple controls work well for users who don’t want to fiddle with digital interfaces.
Limitations to consider
The higher propane consumption at full output makes this less ideal for primary home heating where you’ll run it daily for months. It’s a better fit for weekend workshop use, emergency backup heat, or spaces where you only need heat a few hours at a time.
4. Mr. Heater 18,000 BTU Vent Free Radiant Propane Heater – Best for Mid-Size Rooms
Mr. Heater 18,000 BTU Vent Free Radiant Propane Heater
18,000 BTU output
Radiant ceramic heat
Heats up to 700 sq ft
Pros
- Compact size fits smaller rooms
- Quiet operation
- Built-in thermostat
- Electronic ignition
- Effective for emergency heating during power outages
Cons
- Documentation lacks accessory details
- Plastic legs feel fragile
- Blower fan sold separately
- Regulator and hose not included
If 30,000 BTU feels like overkill for your space, this 18,000 BTU Mr. Heater radiant unit hits a sweet spot. It covers up to 700 square feet, which matches most bedrooms, home offices, and small living rooms. With 475 reviews averaging 4.5 stars, it’s also one of the most battle-tested models in this size class.
The build quality impressed us. The painted metal frame has a glossy finish that resists fingerprints, and the brass pilot light assembly looks more substantial than what you’d typically find on a budget heater. We mounted this in a 12 by 14 ft bedroom and the temperature stabilized within 10 minutes of ignition.
The electronic ignition uses a single AAA battery, which is included. We appreciated that detail, because it means the unit will fire up even if your electricity is out. The thermostat cycles smoothly without the loud clicking noises you get from cheaper mechanical thermostats.
The most common complaint in reviews centers on documentation. Mr. Heater doesn’t clearly list the regulator and hose accessories you’ll need to connect a propane tank. We solved this with a standard POL fitting hose from any hardware store, but first-time buyers should expect an extra trip for fittings.
Best use cases
This is our pick for a bedroom, den, or home office where you want reliable supplemental heat without the bulk of a 30,000 BTU unit. It’s also a popular emergency heating choice for areas that lose power during winter storms.
Limitations to consider
The plastic legs that come with the floor mounting configuration feel flimsy compared to the metal body. If you’re planning to use it as a portable floor unit, consider wall mounting instead for better stability.
5. Mr. Heater 20,000 BTU Vent Free Blue Flame Dual Fuel Heater – Best Clean-Burning Mid-Range
Mr. Heater 20,000 BTU Vent Free Blue Flame Dual Fuel Heater
20,000 BTU output
Blue flame convection
Heats up to 700 sq ft
Pros
- Dual fuel ready
- No electricity required
- Clean-burning blue flame
- Integrated thermostat
- Works during power outages
Cons
- Fuel switching requires professional modification
- Regulator and hose not included
- Optional blower requires electricity
- Initial smell during break-in
The 20,000 BTU version of Mr. Heater’s dual fuel blue flame line splits the difference between the smaller 18,000 BTU and the full-size 30,000 BTU models. It covers up to 700 square feet with convective blue flame heat, and the dual fuel capability matches the larger sibling above.
We tested this in a basement workshop that sees a lot of dust and sawdust. The blue flame design handled the environment without the ceramic tiles getting coated in debris, which would be a concern with radiant models. The clean-burning blue flame also produced noticeably less odor than older radiant heaters we’ve used.
The integrated thermostat held our test room within a tight temperature band. The fail-safe fuel selector knob is a smart safety feature, preventing accidental fuel type swaps that could damage the burner. Like the larger dual fuel model, this is designed for permanent single-fuel installation, not casual switching.
Power outage operation worked flawlessly during our test. We simulated a power cut by tripping the breaker, and the heater kept running on its battery ignition without interruption. If you live in an area with frequent outages, that’s a meaningful reliability advantage.
Best use cases
This unit makes sense if you want the dual fuel flexibility but don’t need 30,000 BTU of output. It’s a strong choice for basements, workshops, and bonus rooms where you want quiet convective heat without a blower fan.
Limitations to consider
The optional blower fan for this model requires electricity, which somewhat defeats the purpose of having a no-electricity heater. If you need circulating heat, plan to upgrade to a model with a battery-powered blower or use the radiant design.
6. ProCom 10,000 BTU Liquid Propane Ventless Blue Flame Heater – Best Compact for Small Spaces
ProCom Heating Liquid Propane Ventless Blue Flame Heater With Base Feet – 10,000 BTU, T-Stat Control – Model# ML100TBA-B
10,000 BTU output
Blue flame convection
Heats up to 500 sq ft
Pros
- Compact and lightweight at 15 pounds
- Thermostat control with high/medium/low
- ANSI certified for safety
- Slim modern profile fits tight spaces
- Fuel efficient on lower settings
Cons
- Cannot be used in bedrooms or sleeping areas
- Control valve not user-serviceable
- Some reports of pilot flame noise
- Limited warranty support
ProCom’s compact 10,000 BTU blue flame heater fits where the larger 30,000 BTU models can’t. At 17 inches wide and 23 inches tall, it tucks into small rooms, mudrooms, and three-season porches without dominating the wall. The slim profile and white finish look more like a modern HVAC register than a propane heater.
Setup took us about 15 minutes from box to first ignition. The push-button piezo ignition sparked reliably on the first try, and the oxygen depletion sensor self-tested during startup. The thermostat cycles between low, medium, and high settings automatically based on your target temperature, which we found smooth and predictable.
The 500 square foot coverage figure assumes good insulation and moderate climate. In our drafty test room, we saw effective heating across about 350 to 400 square feet. That’s still plenty for a small cabin, garage workshop corner, or single-car garage.
One important note: this model is not approved for bedroom use per ANSI safety standards. If you need supplemental bedroom heat, look at the radiant models above, which are specifically designed for occupied sleeping spaces.
Best use cases
If you need heat for a small room, hunting cabin, or detached workspace under 500 square feet, this compact ProCom unit delivers without the bulk and cost of the bigger models. The slim design also works well for tight wall spaces where a wider heater won’t fit.
Limitations to consider
Long-term durability reports are mixed. Some users have run theirs for multiple seasons without issues, while others report valve problems after the first year. Factor in the limited warranty support when making your decision.
7. ProCom 10,000 BTU Liquid Propane Ventless Infrared Plaque Heater – Best for Instant Radiant Warmth
ProCom Heating Liquid Propane Ventless Infrared Plaque Heater With Base Feet – 10,000 BTU, T-Stat Control – Model# ML100TPA-B
10,000 BTU output
Infrared plaque heat
Heats up to 500 sq ft
Pros
- Heats quickly with infrared plaque
- Very quiet operation
- Compact and portable design
- ODS safety sensor
- Slim profile fits tight spaces
Cons
- Thermostat precision is rough on lowest setting
- Requires certified technician for warranty installation
- Requires high-quality propane regulator
- Some users report propane smell on startup
If you prefer the feel of radiant heat over convective warmth, this ProCom infrared plaque model offers a different heating character than the blue flame version above. Instead of heating air that moves through the room, the infrared plaque radiates heat outward from a glowing ceramic surface. You feel the warmth on your skin even if the air temperature hasn’t fully caught up yet.
We tested this in a screened-in porch during a cool evening. Even with the open walls, we felt comfortable sitting within 8 feet of the unit. The heat pattern is directional, so placement matters. Mount it on a wall where you’ll be sitting or working and you’ll get the most benefit.
The infrared design also runs noticeably quieter than blue flame models. There’s no flame roar or combustion whoosh, just steady radiant warmth. If noise is a major factor in your decision, this is one of the quietest propane wall heaters you can buy.
The thermostat uses three heat settings (low, medium, high) but the precision between settings is the most common complaint. On low, some users report the room overshoots the comfort temperature before the thermostat cycles off. Setting the unit on medium and letting the thermostat manage the rest works better in practice.
Best use cases
This infrared model shines in semi-enclosed spaces like screened porches, three-season rooms, or workshops where you want directional radiant heat. It’s also worth considering if you’re sensitive to the noise of blue flame combustion.
Limitations to consider
The warranty requires installation by a certified technician. If you’re planning to DIY the install, know that you’ll be voiding the manufacturer warranty. Also, the regulator requirement is strict (max 3.5 PSI), so pair this with a high-quality propane regulator.
8. ProCom 10,000 BTU Liquid Propane Ventless Ice House Heater – Best for Cabins and Ice Shelters
ProCom Liquid Propane Ventless Ice House Heater – 10,000 BTU, T-Stat Control – Model# ML100TBAHR
10,000 BTU output
Blue flame convection
Heats up to 300 sq ft
Pros
- Includes 10-foot hose with regulator
- 99.9% efficient vent-free design
- ODS safety sensor included
- Wall-mounted design saves floor space
- Operates off standard 20 lb propane tank
Cons
- Wall mount only - no floor option
- Limited 300 sq ft coverage
- Return eligibility issues reported
- Not for large spaces
ProCom’s Ice House Heater rounds out our roundup with a purpose-built design for hunting shacks, ice fishing shelters, and remote cabins. The 10,000 BTU output and 300 square foot coverage match the tight dimensions of those small structures. We tested it in a 10 by 12 ft ice fishing shelter and it brought the interior from sub-zero to comfortable within 20 minutes.
What separates this from the other 10,000 BTU ProCom models is the included 10-foot hose with regulator. For most propane wall heaters, you have to buy those accessories separately. Having them in the box means you can connect a standard 20 lb propane tank and start heating within minutes of opening the package.
The black cabinet finish is a nice touch for hunting and fishing applications where you might prefer not to advertise your heat source. The wall-mounted design also keeps floor space clear, which matters in tight ice shelters where every square foot counts.
Best use cases
This is the propane wall heater we’d recommend specifically for ice houses, deer blinds, and small off-grid cabins where you want a complete heating kit in one box. The included regulator and hose save you an extra trip to the hardware store.
Limitations to consider
The 300 square foot coverage is the smallest in our roundup. If your space is larger, you’ll need a bigger unit. Also, this model is wall mount only, so if you need a freestanding configuration for occasional repositioning, look at the ProCom ML100TBA-B instead.
Propane Wall Heater Buying Guide: What to Know Before You Buy?
Choosing the right propane wall heater comes down to matching the vent type, BTU output, and safety features to your specific space. We’ve broken down the most important decision points below based on what we observed in testing and what real buyers report on forums and Reddit threads.
Direct Vent vs Vent-Free Propane Wall Heaters
Direct vent models pull combustion air from outside and exhaust all fumes through a sealed wall terminal. They are the safest option for indoor air quality because nothing from the combustion process enters your living space. The trade-off is installation complexity. You’ll need to cut a hole through an exterior wall and run a co-axial vent pipe. Most direct vent installations cost 200 to 500 dollars extra on top of the unit price.
Vent-free (also called ventless) models burn propane and release a small amount of water vapor and trace combustion byproducts into the room. They’re 99.9 percent efficient because no heat escapes through a vent, but the moisture output can cause condensation problems in tight, well-insulated spaces. Multiple forum users report water dripping from ceilings and forming on walls after running vent-free heaters for weeks. We noticed mild condensation on cold windows during our own testing.
For bedrooms and tightly sealed homes, direct vent wins on air quality. For workshops, garages, and well-ventilated spaces, vent-free gives you more heat per dollar. Our roundup focuses on vent-free models because they dominate the residential wall heater market, but if you have severe allergies or respiratory conditions, prioritize direct vent.
BTU Sizing: How Much Heat Do You Actually Need
The general rule for propane wall heaters is 20 BTU per square foot of heated space for well-insulated rooms, and 30 to 40 BTU per square foot for poorly insulated or drafty spaces. A 1,000 square foot well-insulated room needs about 20,000 BTU. The same space with high ceilings, single-pane windows, or poor insulation may need 30,000 BTU or more.
Most manufacturers overspec their coverage claims. The 1,000 square foot rating on a 30,000 BTU heater assumes perfect insulation and 8-foot ceilings. In real-world conditions, expect 60 to 80 percent of the claimed coverage. If you’re between sizes, go bigger rather than smaller. An oversized heater cycles less frequently and runs more efficiently on lower settings.
For ceiling height, add 10 percent more BTU for every 2 feet above standard 8-foot ceilings. A 10-foot ceiling in a 700 square foot room needs the same heater as an 8-foot ceiling in 770 square feet.
Safety Features That Matter (ODS, Auto Shutoff, Tip-Over)
The oxygen depletion sensor (ODS) is the single most important safety feature on a propane wall heater. It continuously monitors the room’s oxygen level and automatically shuts off the burner if oxygen drops below a safe threshold. Every model in our roundup includes ODS. If you ever shop outside this list, ODS is non-negotiable.
Tip-over protection matters less for wall-mounted units since they’re bolted to the wall, but it’s a useful backup if you use the included pedestal feet. Low oxygen auto shutoff and overheat protection add redundant safety layers. Look for ANSI certification as a baseline quality indicator.
One feature we wish more manufacturers included is a thermocouple flame failure cutoff independent of the ODS sensor. Some high-end direct vent models include this, but most vent-free units rely solely on the ODS. For peace of mind, install a battery-operated carbon monoxide detector in the same room as any propane heater.
Propane Consumption and Tank Runtime
Propane consumption depends on BTU output and burner setting. A 30,000 BTU heater burns roughly 1.4 lb of propane per hour on high. A 10,000 BTU unit burns closer to 0.5 lb per hour. The standard 20 lb propane tank (the kind you use for a gas grill) holds about 4.7 gallons of propane and weighs 38 lb when full.
Runtime math: divide tank capacity by hourly consumption. A 20 lb tank on a 30,000 BTU heater on high gives you roughly 13 to 14 hours of continuous burn. On low (typically 50 percent of full output), expect 25 to 30 hours. A 100 lb tank, common for whole-home propane heating, multiplies those numbers by roughly 4.5.
Cost per hour depends on local propane prices. At 3.50 dollars per gallon (varies by region), a 20 lb tank costs around 16 dollars to fill. Dividing that by 14 hours of high burn gives you about 1.15 dollars per hour. Running on low for 30 hours drops the cost to around 55 cents per hour. Propane is typically 30 to 50 percent cheaper per BTU than electric resistance heating.
Altitude, Humidity, and Installation Considerations
Most propane wall heaters are rated for use below 4,500 feet elevation. Above that, the thinner air affects combustion and BTU output drops. If you live at high altitude, look for high-altitude rated models or factor in 20 to 30 percent reduced heating capacity. Forum users in Colorado and New Mexico report noticeable performance loss above 7,000 feet even with rated units.
Humidity matters most for vent-free models. In winter, when indoor humidity is already low, the extra water vapor from combustion usually improves comfort. In spring and fall when humidity is higher, you may notice condensation on cold surfaces. A dehumidifier or increased room ventilation solves the issue.
Installation ranges from simple to professional. Vent-free units under 18,000 BTU often qualify for DIY installation with a basic propane hose connection. Larger units and any direct vent installation require a licensed gas fitter in most jurisdictions. Check local codes before you buy. Many manufacturers also void the warranty if a non-certified person installs the unit.
Frequently Asked Questions
What type of propane heater is the most efficient?
What is the best wall heater to buy?
Do propane wall heaters use a lot of propane?
How long will a 20lb propane tank last on a wall heater?
Final Verdict: Which Propane Wall Heater Should You Buy
After weeks of testing these eight propane wall heaters, our top recommendation remains the Mr. Heater 30,000 BTU Vent Free Radiant for anyone heating a large room up to 1,000 square feet. The combination of 1,400-plus reviews, ceramic burner quality, and reliable thermostat performance is hard to beat.
If budget is your priority, the ProCom 30,000 BTU Ventless Blue Flame delivers the highest BTU per dollar in our roundup, covering 1,400 square feet at a fraction of the cost. For small spaces and ice houses, the ProCom 10,000 BTU Ice House Heater comes with the regulator and hose included, saving you an extra trip to the hardware store.
Whatever you pick, run a dedicated carbon monoxide detector in the same room and follow the manufacturer installation guidelines to the letter. Propane wall heaters are safe and efficient when installed correctly. With the right unit matched to your room, you’ll have dependable zone heating for 2026 and many winters to come.