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Pack MSR's compact, easy-to-use Reactor Stove system, and experience a new world of camp stove efficiency.

The MSR Reactor Stove seamlessly integrates a radiant burner, a heat exchanger, and a high-efficiency pot to provide you with a windproof, crazily fuel-efficient stove system for all conditions. So efficient is the Reactor Stove that it boils one liter of water in under three minutes so you can enjoy a quick, hot cup of tea in the morning before packing up for the ascent.
  • MSR's heat exchanger encloses the radiant burner, providing super-efficient fuel burn
  • Internal regulator puts out a consistent flame throughout the life of the canister and combats gusty winds and cold
  • Integrated stove-and-pot system increases fuel efficiency, nests together for convenience, and makes the system easy to set up
  • Package includes: Reactor stove, 1.7L hard anodized aluminum pot, handle, and BPA-free lid
  • Note: fuel canister sold separately

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Review Summary
48 4
7 3
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MSR Reactor Stove

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Here's what others have to say...

5 5

High Altitude Boil Champ

  • Familiarity: I've put it through the wringer

For boiling water QUICKLY at higher altitudes (9500-15,000 feet) and in the wind, the Reactor is the champ. After several years of use in the Andes of Peru and Ecuador, I remain thrilled with this purchase. The extra effort needed to keep the canister somewhat warmer is a small price compared to the time it takes to prime and wait for a white gas stove. If I was running solo, I'd take another look at JetBoil but for two or more, I'll stick with the Reactor. You can boil, eat and be in the bag before your white gas buddy has warm water. I tried to cook in it once and was a bit frustrated trying to control the output so I stick to its strength - super fast boils.

5 5

Aconcagua Tough!

  • Familiarity: I've put it through the wringer

Worth $500 when your melting snow at 19000ft in 40 mph winds and still getting the job done. MSR won with this stove for sure! Walked on Jet Boils when I was up there!

Reactor and K2

Reactor and K2

Posted on

Using a jetboil hanging system on a Reactor at Broad Peak Camp 1.

5 5

Great Stove

  • Gender: Male
  • Familiarity: I've put it through the wringer

Ive used this stove in many different situations. Its boils water and melts snow exceptionally fast and its very compact making it easy to carry and store. The only gripe we had with this is when it gets really cold. If your winter camping plan on sleeping with the canisters in your sleeping bag, or having an XGK to heat up water to heat the canister. If it is not warm it does not output the maximum amount of heat and you end up wasting fuel. Overall a very reliable stove just needs some TLC to keep it warm.

Great Stove
Responded on

This is a problem with the fuel, not necessarily because of the stove. I have this problem with all my canister stoves. I put a little water in a container and sit the canister in it and it helps quite a bit.

Responded on

Yeah, I had never used it in that cold of temps before, missed some beta on that for sure before our trip. Next Year looks like Jetboil is coming out with a stove to match the Reactor but, it puts the canister upside down to make the fuel come out much more efficiently. Sounds interesting, currently they only make it in a 2.5 L pot, waiting for them to come out with a liter option as the 2.5 is a bit big for a 2 person trip.

5 5


This stove boils water so fast. It is unbelievable. It is lightweight, and it is compact. I think the msr logo on the burner is a really cool feature, plus it gets a lot of "whoas" at camp. I woke up in the middle of the night once freezing, knowing that if I didnt get warm soon, we were going to have an issue. I took this outside, and had myself 2 boiling hot nalgenes in a matter of minutes. My only gripe is that I wish it had a piezo lighter, so I didn't always have to have matches with me. This stove has saved my butt. Excellent, fast boiling stove.

5 5

Incredible at melting snow

If you're heading out for some winter camping and need to melt snow. This is the one and only stove you need. Melts snow faster than anything I've seen. It uses a bit more fuel than others, but when you can be done melting snow 15 minutes faster than anyone (or anything) else, it's well worth it. Simmers pretty well and is fairly light.

5 5

Great system

It all stacks together neatly, which is cool, but the main thing is how amazingly fast it boils water or melts snow. It's incredible. MSR also makes a separate piezo igniter that's pretty neat.
I usually figure 1 large fuel canister for 2 people for 2 days.
The downsides are that fuel is less flexible than other stoves such as my msr dragonfly which I've run on various gasoline in foreign countries.. You have to have the canisters. But this stove is way better for backpacking in the cold.
If its very cold though you'll need to keep a canister in your jacket/sleeping bag for it to flow correctly. My last "gripe" is that there's no way to recycle the spent canisters. It'd be great if MSR had collections at various retail stores for the used canisters.
Overall the best stove I've seen for everything except places where you can't buy or carry enough fuel.

Great system
Responded on

The canisters are definitely recyclable. Vent the canister 100%, poke a hole or two in it, throw it in the recycle bin. Jetboil makes an invaluable and safe tool to accomplish this called the Crunchit.
Sure as hell beats the way I use to do it. Vent remaining gas for a day, then poke holes with a hammer and punch.

Unanswered Question

Any idea how soon these will be back on...

Posted on

Any idea how soon these will be back on stock? Thanks.

5 5


  • Familiarity: I've put it through the wringer

Awesome. You hear about people who hate any stove that uses these fuel canisters.. For one or two people this stove pot system rocks. I have been looking at getting the larger pot sold separately. I just feel that once you start getting into needing a larger pot you should move into a fuel bottle stove system and spread the load amongst those in the party.

4 5

Reactor Stove

  • Gender: Male
  • Familiarity: I've put it through the wringer

Pretty cool stove! Hard to light in high wind but once it catches its definitely not going out even if you spill an entire pot of water on it. Obviously it boils fast. It even can be held if you are using it somewhere not recommended like in the tent. I do wish the pot would attach to prevent the aforementioned spilling but once that happens you learn quick to hold on tight and it hasn't been a problem since. The included pot is perfect for two people and will work for three if you dont have to melt much water. Three people in the winter might want a bigger pot. I like being able to store everything (including fuel) in the pot. It packs nicely into the bag and protects the stove well.

5 5

The Bomb

  • Gender: Male
  • Familiarity: I've put it through the wringer

Used this up to 21000 ft and had no issues, boils well, heats evenly, great size for two people. Would love the pot to lock on, best set up for winter camping

5 5

Awesome Stove

This is great. Essentially windproof once lit. Works great in all temps and most elevations. Super fast and you can boil enough water for two freeze dried meals in 3 minutes or less. Only wish the pot attached to the stove to make it more secure. Other than that, this is a great stove for heating water.

I have an older Coleman lp stove for car...

Posted on

I have an older Coleman lp stove for car camping but want something that is lightweight and solid construction where I can boil water, make water based food, and use for general food making. In talking with others msr makes the best lightweight stoves but don't know which is the best and most versatile. Any recommendations? My use is car camping or short hikes to camping areas

Responded on

You could get away with much less stove - a pocket rocket or an older version of a liquid gas stove. This stove is the best of the best - you will enjoy it and it will last a long time. Check out a jetboil as well - a little lighter and works very well but not as well in the cold. Canister stoves in general are somewhat sensitive to the cold.

Best Answer Responded on

For a wide use of needs (car camping, actual cooking, short backpacking, etc.) it's tough to beat the MSR Windpro II. It's a bit more expensive than some stoves, but cheaper than the Reactor. And, it has a huge range of adjustability, can be used with a windscreen and allows you to invert the canister to feed it the fuel in a liquid form if the temps get too low.

I have the Reactor and the Windpro. While the Reactor rocks for super-fast water boiling in a number of conditions, I think the WindPro is a more solid, all-around choice.

5 5

Crazy fast

I can't believe how fast this thing boils water.

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