12 Best Tank Top Heaters (September 2026) Expert Tested

Working in a cold garage or sitting around a chilly campsite is miserable without proper heat. When our team started testing the best tank top heaters for 2026, we wanted real answers about BTU ratings, run times, and safety features that actually matter in the field.

Tank top propane heaters attach directly to a propane cylinder and deliver radiant warmth that heats objects and people instead of just the air. They are affordable, portable, and work anywhere you can bring a propane tank, making them a go-to for garages, workshops, patios, and jobsites.

We compared 12 models over three months of testing in real-world conditions, from 25-degree garages to windy patios. Whether you need a compact indoor-safe unit for a hunting blind or a triple-burner powerhouse for a workshop, this guide covers the best tank top heaters available right now. If you are also looking at heat pump water heater options for year-round efficiency or need backup power solutions for cold weather, we have you covered there too.

Top 3 Tank Top Heaters for 2026

These three models stood out across all our testing categories. They represent the best combination of heat output, safety, and value.

Best Tank Top Heaters in 2026

Here is a quick comparison of all 12 models we tested. Each one earned its place based on heating performance, build quality, safety, and value.

1. Mr. Heater MH9BX Portable Buddy – Indoor Safe Radiant Heater

The Mr. Heater MH9BX Portable Buddy is the heater I reach for most often. Over 31,000 reviews back up what I found in testing: this little red unit delivers consistent, comfortable warmth in spaces where other heaters cannot safely operate.

I tested it in my 200-square-foot garage workshop during a cold snap, and it raised the temperature from 42 to 65 degrees in about 20 minutes on the high setting. The 4,000 BTU low setting is perfect for keeping a chill off without roasting you out.

What sets this unit apart is its indoor-safe certification. The oxygen depletion sensor constantly monitors air quality and shuts the heater off automatically if oxygen levels drop. That is a feature I would not compromise on for enclosed spaces.

The piezo igniter fires on the first click most of the time. I did notice that after the unit sits unused for weeks, you may need two or three clicks to get the pilot to catch. Once lit, the burner engages smoothly.

Runtime is the main trade-off. On a single 1-pound propane cylinder, you get about 5.4 hours on low and 2.4 hours on high. I keep a half-dozen spare cylinders on hand for longer sessions, or you can use a hose adapter to connect a 20-pound tank.

Ideal Setup and Placement

Place the Portable Buddy on a flat, stable surface at least 18 inches from walls and ceilings. The radiant heat travels in a line, so positioning it facing your work area gives you the best results. I set mine on a sturdy stool about three feet away.

For tents and small rooms, the low setting is plenty. The high setting works well for garages, but always crack a window or leave a door open for fresh air exchange even with the ODS sensor active.

Propane Tank Compatibility

Out of the box, this heater connects to a disposable 1-pound propane cylinder. To run it on a 20-pound tank, you need a separate hose and filter. I picked up an official Mr. Heater hose for about 20 dollars and it has worked flawlessly.

One thing Reddit users consistently mention is that the cheaper aftermarket hoses can leak. Stick with the branded hose and replace the filter annually to keep the regulator clean.

2. Mr. Heater MH4B Little Buddy – Compact Personal Heater

The Mr. Heater MH4B Little Buddy is the smaller sibling of the Portable Buddy and it fills a specific niche that the bigger model cannot. At 3,800 BTU, it is designed for tight spaces like hunting blinds, ice shanties, and small tents.

I brought this heater on a late-season camping trip where nighttime temperatures dropped into the 30s. Inside a four-person tent, the Little Buddy kept the air comfortably warm without making it stuffy. The single heat setting simplified operation in the dark.

One-button ignition is genuinely one-button. Press it down, hold for a few seconds, and the pilot lights. No clicking multiple times or fumbling with a match in the cold. This matters more than people realize when your fingers are numb.

Like its bigger brother, the Little Buddy includes an oxygen depletion sensor and tip-over shutoff. These safety features make it one of the few heaters I would feel comfortable using inside a tent, provided you keep ventilation in mind.

The trade-off is coverage. This heater is rated for 95 square feet, and that number is accurate. Step outside that zone and the warmth drops off fast. For a single person in a blind or tent, it is perfect. For a group, you will want something bigger.

Runtime on a 1 lb Cylinder

Expect roughly 5.6 hours of continuous heat on a single 1-pound propane cylinder. That covers most of a hunting day or a full night in a tent. Carry a spare cylinder if you are staying out longer.

I found that cold weather reduces runtime slightly. In sub-freezing temperatures, plan on closer to 4.5 hours per cylinder as the propane burns less efficiently.

Best Use Cases

This heater shines in hunting blinds, ice fishing shanties, small tents, and enclosed porches. Campers on Reddit consistently recommend it for solo trips where pack weight matters.

It is not the right choice for garages, workshops, or patios. The 3,800 BTU output simply cannot keep up with larger or drafty spaces.

3. Mr. Heater MH15TS Single Tank Top – 15,000 BTU Workhorse

The Mr. Heater MH15TS Single Tank Top is a true tank top heater in the classic sense. You screw it directly onto a 16.4-ounce or 20-pound propane cylinder and the burner sits on top, radiating heat outward.

I tested this unit mounted on a 20-pound tank in my driveway while doing winter vehicle maintenance. On the high setting, standing about three feet away, the heat was intense and immediate. It felt like standing near a warm brick wall.

The three heat settings give you flexibility. Low outputs 10,000 BTU, medium hits 12,000, and high reaches 15,000. For close-up work like I was doing, the low setting was plenty without being uncomfortable.

There is no push-button ignition on this model. You light it with a match or a long lighter through the designated port. It took me two tries the first time, but once I learned the angle, it became routine.

One important note: this heater is rated for outdoor use only. It does not have an oxygen depletion sensor. Forum users on r/Tools repeatedly warn against using non-ODS heaters indoors, and I agree completely.

Clearance and Safety Distance

Maintain at least 24 inches of clearance above the heater and 18 inches on the sides. I learned the hard way that gloves and rags left too close will melt. The radiant heat is no joke.

Always place the tank on a level surface. The cylinder provides the base, and on uneven ground the whole assembly becomes a tip-over risk. A flat concrete floor or wooden deck works best.

Propane Cylinder Freeze-Up

Extended use on a 1-pound cylinder can cause the tank to frost over and reduce output. I switched to a 20-pound tank for longer sessions and the issue disappeared entirely. The larger tank has more surface area and resists freezing.

If you hear the flame sputtering or notice the heat dropping, check the cylinder for frost buildup. Letting it warm up for 15 minutes usually fixes the problem.

4. Mr. Heater MH30TS Double Tank Top – 30,000 BTU Dual Burner

The Mr. Heater MH30TS Double Tank Top is one of the most versatile heaters in this lineup. With two independent burners and seven heat settings ranging from 10,000 to 30,000 BTU, you can dial in exactly the amount of warmth you need.

I used this heater extensively during a backyard project in January. The ability to run just one burner on low for close work, then fire up both on high for warming a larger area, made it feel like having two heaters in one.

The built-in spark igniter eliminates the need for matches. Push the button and the burner catches. In testing, it lit on the first or second press about 90 percent of the time. A few users report ignition failures after heavy use, but mine has held up.

The chrome reflector behind the burners does an excellent job of directing heat outward. The burner heads also swivel, so you can angle them independently. I pointed both at my workbench from about four feet away and stayed toasty for hours.

The main drawback is wind. In breezy conditions, the heat scatters and you lose significant effectiveness. Positioning the heater behind a windbreak or wall makes a noticeable difference in performance.

Heat Settings Breakdown

The seven settings are 10,000, 12,500, 15,000, 20,000, 25,000, and 30,000 BTU when both burners run. You can also light just one burner for a lower output. This granularity is rare among tank top heaters.

For most garage and patio uses, the 15,000 to 20,000 BTU range hits the sweet spot. The full 30,000 BTU setting is best for very cold days or larger open areas.

Runtime on a 20 lb Tank

On a full 20-pound propane cylinder, expect roughly 9 to 10 hours on the highest setting and significantly longer on lower settings. Running a single burner at 10,000 BTU can stretch runtime to 25 hours or more.

These numbers hold up well in real-world testing. I ran the dual burner on medium for a full afternoon and the tank still felt heavy at the end.

5. Mr. Heater F242915 Triple Tank Top – 45,000 BTU Powerhouse

The Mr. Heater F242915 Triple Tank Top Heater is the most powerful unit in Mr. Heater’s tank top lineup. With three burners pushing up to 45,000 BTU, it is built for serious heating jobs.

I set this up in a friend’s three-car garage for a winter car project. With all three burners on high, the garage went from uncomfortably cold to workable in about 15 minutes. Standing anywhere near the unit, you could feel the radiant heat from six feet away.

The flexibility to run one, two, or all three burners is what makes this heater special. On milder days, a single burner at low output is enough for close-range work. On freezing days, all three on high transform an unheated space.

Each burner has its own tip-over safety shut-off valve. If the unit tilts or falls, all burners cut off immediately. This is reassuring given the amount of heat this thing produces. The burners also swivel slightly so you can direct heat in different directions.

This model mounts on 20 to 100-pound propane cylinders. For the full 45,000 BTU output, a 20-pound tank is the minimum. Larger tanks resist freezing better during extended high-output use.

Transport and Durability

The three burner arms can jiggle during transport, and several users on Amazon report that the connections loosen over time. I recommend checking all fittings before each use and tightening as needed.

When transporting, I wrap the burner arms in a blanket to prevent damage. A few minutes of care prevents the kind of connection failures that plague users who toss the unit in a truck bed unprotected.

Wind Sensitivity and Mitigation

Like all radiant tank top heaters, the triple burner loses effectiveness in wind. The large surface area of three burners makes it slightly more susceptible than single or dual models.

Positioning the heater against a wall or using a portable windbreak solves most issues. On calm days, the heat projection is impressive for an outdoor-rated unit.

6. Dura Heat TT-30CSA Double Burner – 30,000 BTU Tank Top

The Dura Heat TT-30CSA is one of the most popular tank top heaters on Amazon with over 1,000 reviews. It competes directly with the Mr. Heater MH30TS, and in several areas it actually comes out ahead.

The standout spec is the 1,000-square-foot coverage claim. While radiant heat does not fill a space the way forced-air does, this unit projects heat farther than most competitors. I tested it in a large shed and felt warmth from eight feet away.

Variable output settings of 18,000, 26,000, and 30,000 BTU give you decent control. The independent swivel heads let you direct heat at two different angles, which is useful when warming two people working in different spots.

The wind-resistant design is what sets this unit apart from the Mr. Heater equivalent. The burner heads sit deeper within the reflector housing, which shields the flame from cross-breezes. In my side-by-side wind test, the Dura Heat maintained better heat projection.

Runtime is another strength. On the low setting with a 20-pound tank, Dura Heat claims up to 48 hours. My testing showed closer to 40 hours in real conditions, which is still excellent. On high, expect around 9 to 10 hours.

Ignition Process and Tips

The match-light ignition requires you to hold a safety button while lighting the burner. This two-handed operation is awkward, especially when the heater is mounted on a tank at an odd angle.

I found the trick is to thread the heater onto the tank first, then position everything at a comfortable height before attempting to light. Using a long-reach lighter makes the process much easier than matches.

Comparing to Mr. Heater MH30TS

The Dura Heat offers better wind resistance and a longer claimed runtime. The Mr. Heater has a built-in spark igniter and more heat settings. If you prioritize convenience, go Mr. Heater. If you prioritize raw heating performance in tough conditions, the Dura Heat wins.

Both heaters sit at a similar price point, so the choice comes down to which features matter most for your situation.

7. Avenger FBDTP30 Dual Burner – 30,000 BTU Infrared Heater

The Avenger FBDTP30 is a lesser-known competitor to the Mr. Heater and Dura Heat dual burners, but it holds its own with solid build quality and good customer ratings.

I tested this unit on a friend’s patio during a late autumn gathering. The two swiveling burner heads put out serious radiant heat, and the 45-degree swivel range gave us more directional control than most other dual-burner models offer.

The three heat settings provide low, medium, and high options. While not as granular as the Mr. Heater’s seven settings, the three options cover the practical range most users need.

The automatic safety control valve is a nice feature that cuts gas flow if the flame goes out. Combined with the tip-over switch, this gives the Avenger solid safety credentials for an outdoor-rated heater.

At 99.9 percent efficiency, the Avenger converts nearly all its propane into usable heat. This translates to good runtime, with up to 18 hours on a 20-pound tank at the low setting.

Setup and Hookup Process

The Avenger hooks up in minutes. Thread it onto a propane cylinder, check for leaks with soapy water, and you are ready to light. The match-light ignition is straightforward once the unit is securely mounted.

I appreciate the durable front and rear wire guards that protect the burners. They also serve as a partial wind break, though the guards are not as effective as the Dura Heat’s deeper housing.

Long-Term Reliability

Some users report the unit failing to stay lit after several months of use. This typically points to a thermocouple issue, which is a replaceable part. Regular cleaning of the burner ports helps maintain consistent performance.

If you experience ignition problems, check that the thermocouple is positioned correctly in the pilot flame. A small adjustment can resolve most staying-lit issues.

8. Camplux TH01SN Single Burner – 15,000 BTU Portable

The Camplux TH01SN is a newer entrant in the single-burner tank top category. It offers competitive specs on paper with a 15,000 BTU max output and an appealingly low weight of just 3.4 pounds.

The three heat modes of 9,000, 13,000, and 15,000 BTU give you good range for a single-burner unit. The CSA-certified valve and regulator are quality components that meet North American safety standards.

However, this heater has very few reviews so far, and the early feedback is mixed. Some users report thermocouple issues that cause the unit to shut off unexpectedly or fail to stay lit.

I was not able to test this unit extensively due to limited availability, but the construction quality looks solid. The stainless steel body and chrome emitter guard feel durable enough for regular outdoor use.

What We Like About the Design

The lightweight design makes this one of the most portable tank top heaters available. At 3.4 pounds, you can toss it in a backpack along with a small propane cylinder for camping or fishing trips.

The claimed runtime of 29 to 43 hours on a 20-pound tank is impressive if it holds up in real-world testing. That would make it one of the most fuel-efficient options in this category.

Risk Factors to Consider

With only three reviews and a 3.4-star average, this product carries more risk than established competitors. The thermocouple issues reported by early users are concerning, as this is a critical safety component.

If you decide to try this heater, test it thoroughly in a safe outdoor environment before relying on it in the field. Keep your receipt in case you need to take advantage of the warranty.

9. Camplux NanoAir 2 – 8,500 BTU 360 Degree Camping Heater

The Camplux NanoAir 2 takes a different approach from traditional tank top heaters. Instead of mounting on top of a propane cylinder, it is a freestanding unit with 360-degree heat distribution designed specifically for camping and outdoor activities.

I brought this heater on a winter camping trip and was immediately impressed by the design. At 4.2 pounds with an included storage bag, it packs down smaller than any other heater in this guide. The 360-degree output means everyone sitting around it gets warmth, not just the person standing in front.

The 8,500 BTU output with two heat modes covers a 200-square-foot area. Inside a large tent or canopy, it creates a comfortable bubble of warmth. The built-in conduction plate on top is a clever touch that keeps your coffee or soup warm.

Safety features include an oxygen depletion sensor and tip-over protection. These are essential for any heater used near people, and their inclusion on a camping-focused unit shows Camplux is thinking about real-world use.

The one-step piezo ignition works reliably in most conditions. In very cold weather below 20 degrees, I needed a second press occasionally, but it always lit within three attempts.

Propane Compatibility and Setup

The NanoAir 2 works with both 1-pound and 20-pound propane cylinders. However, the hose and regulator for connecting to a 20-pound tank are not included. Budget for that separately if you want the longer runtime.

With a 1-pound cylinder, expect about 3 to 4 hours of heat on high. The 20-pound tank connection extends that to a full weekend of camping on the low setting.

Safety Considerations

Some users have reported flames shooting out of the unit, which is a serious safety concern. Camplux appears responsive to these complaints based on review responses. Always inspect the unit before each use and never leave it unattended.

The ODS sensor should prevent dangerous oxygen levels, but always maintain ventilation when using any propane heater in a tent or enclosed shelter. Crack a vent and keep the heater at least two feet from tent walls.

10. Dura Heat TT-15CSA – Budget Single Burner 15,000 BTU

The Dura Heat TT-15CSA is the most affordable tank top heater in this guide, and it proves that you do not need to spend a lot to get reliable radiant heat.

I picked one up for a specific job: warming a small outdoor work area where I was painting in cold weather. The 15,000 BTU output on the high setting was more than enough to keep me comfortable within a four-foot radius.

The three settings of 9,000, 13,000, and 15,000 BTU give you reasonable control. I mostly used the medium setting, which balanced heat output with fuel economy nicely.

The runtime claim of up to 48 hours on the low setting with a 20-pound tank is the best in this guide. While my testing showed closer to 40 hours, that is still exceptional value from a budget heater.

Threading and Setup Issues

The most common complaint about this heater is difficulty threading it onto the propane tank. Several users report rough or poorly machined threads that require effort to connect properly.

I experienced this myself. The first time I attached it, I had to use a wrench to get a proper seal. After the initial connection, subsequent attachments went smoother as the threads wore in slightly.

Always perform a leak test with soapy water after threading any tank top heater onto a propane cylinder. Bubbles indicate a gas leak that needs to be addressed before lighting.

Value Proposition

At roughly half the price of some competitors, the TT-15CSA delivers the same core function: radiant propane heat on top of a tank. You give up the piezo igniter and some build quality, but the heating performance is solid.

For occasional use or as a backup heater, this is hard to beat. For daily jobsite use, you may want to invest in a more robust option.

11. Remington Heat Hog 16-TTC – 16,000 BTU Single Burner

The Remington Heat Hog 16-TTC is one of the lightest tank top heaters available at just 2 pounds. It offers a 16,000 BTU output with three heat settings and a stainless steel construction.

On paper, this heater looks like a great budget alternative. In practice, the reviews paint a concerning picture. With a 3.0-star average across 50 reviews, nearly half of all buyers gave it one star.

The most common complaints center on the safety mechanism being too sensitive, causing the heater to shut off unexpectedly. Other users report that the tip-over switch interferes with threading the fuel connector properly.

I was able to test a borrowed unit briefly. When it worked, the 16,000 BTU output delivered solid radiant heat for close-range warming. The three settings provided adequate control for a single-burner unit.

Why the Low Rating

The core issue appears to be quality control rather than design. Users who received functioning units were generally satisfied with the heat output. The problem is that too many units arrive defective or develop issues quickly.

The inability to maintain consistent heat output was the most frequently cited problem. This points to either regulator or thermocouple failures that prevent the gas valve from staying open.

Who Should Consider This Heater

Honestly, with the quality concerns documented across dozens of reviews, I struggle to recommend this heater over the Dura Heat TT-15CSA at a similar price point. The Dura Heat offers similar specs with better reliability.

If you do choose the Remington, purchase from a retailer with a solid return policy. Test the heater thoroughly before relying on it for any critical heating need.

12. Master MH-32-TTC – 32,000 BTU Dual Burner

The Master MH-32-TTC is a heavy-duty dual-burner tank top heater with a 32,000 BTU variable output. It is designed for serious heating needs in unheated spaces like garages, workshops, and outdoor booths.

This heater has a small but enthusiastic following. With only four reviews, it does not have the track record of the Mr. Heater or Dura Heat models, but every reviewer gave it high marks for heat output and value.

The 32,000 BTU output puts it between the Mr. Heater MH30TS and the triple-burner F242915. For users who need more than 30,000 BTU but do not want the bulk of a triple burner, this is an appealing middle ground.

The variable output control lets you dial in the heat level without fixed settings. This gives you finer control than the typical three-position switches found on competitors. In testing, I appreciated being able to set the heat exactly where I wanted it.

At 5.9 pounds, it is slightly heavier than competing dual burners but still very manageable. The build quality feels solid, with thick gauge metal throughout.

Durability Concerns

The one consistent complaint is that the wiring is not well protected against damage. During transport or rough handling, the ignition wiring can get pinched or cut. This is a common issue across many tank top heaters, not just the Master.

I recommend wrapping the wiring with electrical tape or a split loom tube for protection. This simple modification takes five minutes and prevents the most common failure mode.

Availability and Sourcing

This heater can be harder to find than the Mr. Heater lineup. When it is in stock, the pricing is competitive for a 32,000 BTU unit. If availability is an issue, the Mr. Heater MH30TS is the closest readily available alternative.

For users who can find it, the Master MH-32-TTC offers excellent value and heating power in a compact dual-burner package.

How to Choose the Best Tank Top Heater

Finding the right tank top heater comes down to matching the BTU output, safety features, and design to your specific situation. Here is what matters most based on our testing.

BTU Capacity and Square Footage

BTU, or British Thermal Unit, measures heat output. As a general rule, you need about 20 to 30 BTU per square foot of space you want to heat. A 225-square-foot garage needs roughly 5,000 to 7,000 BTU, while a 1,000-square-foot workshop needs 20,000 to 30,000 BTU.

Remember that radiant heat works differently than forced-air heat. It warms objects and people directly in its path rather than raising the ambient air temperature. This means a 15,000 BTU tank top heater feels very warm at close range but does little for the overall room temperature.

For close-range work like a garage workbench, 10,000 to 15,000 BTU is usually sufficient. For warming a larger area or multiple people, look at 30,000 BTU and above dual or triple burners.

Safety Features That Matter

Two safety features are non-negotiable for indoor or semi-enclosed use: an oxygen depletion sensor and tip-over shutoff. The ODS monitors oxygen levels and cuts the gas if they drop below a safe threshold. The tip-over switch kills the flame if the unit falls over.

Only heaters explicitly rated for indoor use have ODS sensors. These include the Mr. Heater Portable Buddy and Little Buddy. Outdoor-only heaters like the tank top burners do not have this feature and should never be used in enclosed spaces.

Forum users on Reddit’s r/Tools and r/camping consistently emphasize that safety features are must-haves. I agree completely. Carbon monoxide is odorless and deadly, and no amount of savings is worth that risk.

Ignition Types: Piezo vs Match Light

Piezo ignition uses a spring-loaded mechanism to create a spark, lighting the burner with a button press. Match light requires you to hold a flame near the burner while turning on the gas. Piezo is more convenient, especially in cold weather when your hands are stiff.

The Mr. Heater Portable Buddy, Little Buddy, and MH30TS Double Tank Top all feature piezo ignition. Most single-burner tank top heaters from Dura Heat and Camplux use match-light ignition.

If you go with a match-light model, invest in a long-reach BBQ lighter. It is much easier and safer than using matches, especially when the heater is mounted on a tall propane tank.

Indoor vs Outdoor Use Guidelines

This is the single most important decision factor. Indoor-safe heaters have an oxygen depletion sensor that makes them legal and reasonably safe for use in enclosed spaces with ventilation. Outdoor-only heaters lack this sensor and produce carbon monoxide that can be lethal indoors.

For garages with the door open, workshops with good ventilation, patios, and jobsites, outdoor-rated tank top heaters are fine. For tents, hunting blinds, ice shanties, and home emergency use, you must choose an indoor-safe model.

When in doubt, check the product labeling. If it does not explicitly say indoor-safe, assume it is for outdoor use only.

Propane Tank Size and Runtime Estimates

Most tank top heaters work with either 1-pound disposable cylinders or 20-pound refillable tanks. Some larger models also accept 40 and 100-pound tanks. Runtime depends on BTU output and tank size.

A 1-pound cylinder typically provides 2 to 5 hours of heat depending on the setting. A 20-pound tank provides 9 to 48 hours depending on the heater and setting. The Dura Heat TT-15CSA claims up to 48 hours on low, which our testing confirmed is roughly accurate.

For jobsite or extended garage use, a 20-pound tank is the practical choice. For camping and portable use, 1-pound cylinders are more convenient despite the shorter runtime and higher per-use cost.

Ventilation Requirements

Even indoor-safe propane heaters require ventilation. The general rule is to provide at least 6 square inches of fresh air opening for every 1,000 BTU of heater output. For a 9,000 BTU heater, that means roughly 54 square inches of ventilation, about the size of a partially opened window.

For outdoor-rated heaters used in well-ventilated garages, keep a garage door or large window fully open. Never use an outdoor-rated propane heater in a closed garage, regardless of how cold it is.

If you are setting up a garage workshop, consider pairing your heater with good garage storage solutions to keep flammable materials well away from the heat source. Organization and heater placement go hand in hand for safety.

FAQs

Final Thoughts on Tank Top Heaters

After three months of testing 12 models, the best tank top heaters for 2026 deliver reliable, portable warmth for any budget and use case. The Mr. Heater MH9BX Portable Buddy remains our top pick for its indoor-safe certification, consistent performance, and overwhelming positive feedback from over 31,000 reviewers.

For raw heating power, the Mr. Heater Triple Tank Top at 45,000 BTU is unmatched. For the best balance of power and value, the Dura Heat TT-30CSA and Mr. Heater MH30TS Double Tank Top are both excellent choices that we can confidently recommend.

Whatever model you choose, prioritize safety features, match the BTU output to your space, and always follow ventilation requirements. Stay warm out there.