Kuuma Wood Furnaces and Sauna Stoves (Wood and Electric)

The World’s #1 Forced-Air Wood Burning Gasification Furnaces.

Kuuma Vapor-Fire 100, Phase 2 EPA certified, exceeds 2020 standards by over 40%.  Cleanest and most efficient on the market + “Proudly made in the U.S.A. using American Steel.”

*****Small Town American Manufacturing – The cost of quality*****

The Inflation Reduction Act, now signed into law, will change the tax credit for wood furnaces as of Jan. 1, 2023.  The credit in 2023 will be 30% with a maximum of $2,000 and can be taken in addition to the $1,200 tax credit for building envelope upgrades and energy audits.  The efficiency qualification remains the same at 75% or more. 

In everyday terminology, you get the full $2,000 tax credit on the furnace purchase alone.  You would be eligible for up to an additional $1,200 on expenses associated with your installation (chimney, ducting, hired labor, etc.).   

The original Lamppa Manufacturing facility in Tower, MN, converted from a creamery and used for all manufacturing until late 2019.

The current Lamppa Manufacturing facility in Tower, MN, was made possible by Herb Lamppa, Daryl Lamppa, IRRRB (Iron Range Resources and Rehabilitation Board), and TEDA (Tower Economic Development Authority). 


#builtlikeatank #handcrafted #shopsmall #americanmade #getoffthetopbench  #smalltownmanufacturing #generationalfamilybusiness #americansteel #shoplocal #cleanburning #kuumaquality  

The Very Best Wood Burning Sauna Stoves & Furnaces

Kuuma Wood Burning Sauna Stoves and Furnaces are produced with “old-world” craftsmanship, quality, and charm not found in today’s throw-away world. The Kuuma family (Kuuma means hot in Finnish) of American-made wood stoves has evolved over the past 80 years with continual innovation to stay at the leading edge of technology in the wood-burning industry. You’ll understand why #kuumapowered makes such a difference.

Our stoves are made with American steel and have been manufactured in the USA Finnish-American style for generations! 

***Ordering Process*** (Click Here for Details)

If you love your Wood Furnace or Sauna Stove, please leave us a review on Google.

Sauna Traditions PBS Video (4:35 Mark on Lamppa MFG)

Kuuma Vapor-Fire 100 Installation Videos

Firing up your Kuuma Vapor-Fire 100 (For the first time ever or the season) (Video)

#Kuuma meet our new puppy #Kuuma
Kuuma Vapor-Fire 100 "Front"
Kuuma Vapor-Fire 100 (cleanest burning and most efficient forced air wood furnace available!

What Are Our Customers Saying?

Kuuma Wood Sauna Stove

I wanted to follow up with you on how happy we are with our purchase of a Kuuma sauna stove, after two years of fantastic service!  We love our sauna, and it was fun to plan and build.  The control over the fire that is provided by the Kuuma stove is so complete that it also makes it very safe. I’d say that our certified Morso insert in the house has much less control.


We received delivery of the stove in Toronto, ON, the week before the pandemic started, and began construction of the sauna that spring. This is the second sauna we have built; the first is at our lakeside cabin in Georgian Bay, however, we wanted to build something at our home that we could move to a new location should we choose to move in the future, so we built this one on skids and a relatively small footprint (8’ x 12’ not including the deck overhang). The change room has a sliding glass door, for which my wife (a graphic designer) created a band of frosted stencils so that nobody would walk through it. I’ve attached photos below.

Thanks again for your amazing service, and for producing such a high quality product!
Toronto, ON

I have a Kuuma Vaporfire 100. It has kept my home very warm over the past 4 years I’ve had it installed. Not only that, my chimney has never needed swept! Because there is absolutely nothing in it! I burn way less wood. Never have to worry about safety hazards as it’s built like a tank. No chimney or creasote fires. Can’t say enough good things about these furnaces and the folks that make them! Daryl Lamppa is great with customer service and answered any and all of my questions immediately! Thanks again guys!

I bought a Kuuma Sauna Stove about 15 years ago. It still looks and heats like new. Good people, good stoves, local business – win, win, win. 

Bill Hansen

Installed my Kuuma Vapor-Fire 100 this fall.  I have never been so satisfied.  All it’s advertised to be and more.  Thanks to you and your crew.  Job well done.  

John F Cotton, MN

The guys working there had pride of craftsmanship. They should. They build a great product! 

Tom Crafton

The stove is fantastic and easily heats the sauna to 180f or higher if I want. These are great stoves and highly recommend them. 

Paul Geyen

Going into my 3rd winter with our Vapor Fire 100 furnace and we could not be happier. 

Bill Widmer

I’ve lived in Northern Minnesota for the last 30 years and have burned wood for 29 of those years.I started off with a 2000 sq ft home and heated it with the Vapor fire 200 for 20 years. Had to sell that home and the worst thing about it was that i had to leave the stove behind.That stove is 30 years old and still being used with no signs of burning out or having to replace it. I could go on and on about how great that stove is but i had better talk about my new stove,the vapor fire 100. I heat a 3500 sq ft home now and pretty much heat with nothing but wood. This has been the coldest winter that i think i’ve ever seen here in Northern Minn. Lots of 20 to 30 below temps and 50 to 60 blow wind chill. Propane was up to 6 dollars a gallon. Thank God i had this wood burner.Even this year i think i will have used about 5 to 5 1/2 cords of wood. I can’t say enough about this stove. I forgot to mention that the guy who told me about these stoves had his in a house for 10 years before i bought mine and t hat stove is still heating that house. Thats quality you can’t find in to many places now days. There are some new bells and whistles on the new stoves that i didn’t have on the first one but are all good.

I remember not having to clean the chimney in the first house for 8 years. I burn lots of Birch but do try to mix it with other hard woods. I don’t know how my chimney stays so clean. I don’t know of any other stove out there that burns this clean. Once every couple of months i clean the stove pipe going to the chimney but i really think i could get away without doing that. I will give this stove 10 stars, it’s that good.

The customer service is great!

If anyone has any ? about this review feel free to email me at stat1dou@hotmail.com

Hands down the best wood burning stove i’ve ever owend

Thank you all who make this possible and keep up the good work.

Douglas State
Deer River, MN

Daryl, I just wanted to let you know how much we appreciate the great workmanship put into your sauna stoves. We are just opening up our cabin for the season and have our sauna heating up as I write you this note.

The heater gets used non-stop over the summer and we invite our neighbors to use it as well.
 Thanks again for a great product.

Allen & Patty Dahl

Wood Chimney Water Vapor

Just wanted to send a pic of my VF100 working perfectly this morning when it is -16. I love the clean burn!!  The water vapor in the pic dissipated quickly as it rose.  This is about 20 minutes after a reload.

I couldn’t be happier with its operation.  I have been heating with wood for over 40 years, and the last 4 with this unit—hands down, the best I have ever used or seen.

Gary K Three Lakes, WI

I absolutely love my Vapor-Fire 100 wood furnace and cannot recommend Dale and his business’s customer service highly enough.  You are dealing with a top notch business when the owner himself takes your calls and helps my installer get everything set-up correctly and then spends an extra 30 minutes on the phone with me helping to trouble shoot why I wasn’t getting as long of burns as I expected.  Now I get 12 hour burns that heat my 3500 sqft house on 15 degree days.  Lots of my friends monkey around with older burners and don’t want to pay for one of these.  In the long run, I’m saving so much time and have a better heating experience – this makes wood burning a real pleasure.    

Ryan L Lucas, IA

Jeff P Kuuma Sauna Stove
Jeff P Kuuma Sauna Stove

The heat is strong and consistent. It holds a lot of stones and makes wonderful löyly. 

6 years – 2,000 Hot saunas (210 degrees)

Not a hint of warpage on the Kuuma

Jeff Pyzyk #pyzykplunge


I’ve had a Kuuma electric sauna stove for about 20 years and still works excellent… I recently bought a cabin with Kuuma wood sauna stove and I love that stove also they are in a class of their own… 

Nathaniel Dostert

We purchased our furnace last fall. It is the best furnace we ever owned. 

Cindy Torma

We bought the electric floor model, there have only been 3-5 days we haven’t used it in the last two years. Industrial grade stainless steel construction, protected elements, we expect many more years of saunas before we need to change out the elements. 

Mike Hill

This furnace is absolutely fantastic! I am a first-time wood burner, and the only learning curve involved was learning how much wood to load when it got a bit warmer, so you don’t overheat the house. It truly is load and go. No messing with dampers or air inducers trying to keep the fire burning optimally. All the guesswork is taken away thanks to the computer. The only regret I have is I wish we would have purchased it one year sooner, as we could have avoided that particular winter’s extreme LP prices.

Don’t ever be reluctant to contact Lamppa Manufacturing if you have any questions or concerns. They are very proud of their furnace and will help out if you ever have any questions or issues.

Paul Junion, Wisconsin Dells, Wisconsin

The heat and steam are perfections and we are so happy we found the very best for our cabin sauna! Thanks for wonderful craftsmanship! 

Susan Odden

August 2013

KUUMA VAPOR FIRE 100 wood furnace results

As many of you now I installed a Kuuma vapor fire last year. Well I just got around to cleaning my chimney for the last piece of info needed to give an accurate opinion. The chimney was as clean as a whistle, A little dust ash, that’s it. There was a little soot in the inside Single wall pipe, 1/16 of an inch. This furnace was everything they said it was. This was my only source of heat last winter, if it didn’t work I was screwed. It worked flawlessly. My house about 2,000 sq ft, NEVER dropped below 70* Even on the coldest days where some peoples boilers could not keep up. This furnace is said to equal 100,000 btu fossil fuel furnace. Well a coworker that lives 5 miles away with a 125,000 BTU oil boiler on the coldest days could not keep his house out of the 50’s. First time that has happened to him in the 20 yr’s he’s been there. My house was 72*. This wood furnace is as easier to use than any wood burning appliance that I have seen. Almost as easy as fossil fuel, the exception of course is tha t you have to put wood in it twice a day. Even that is easy, scrape the ash down the grate, pull the coals forward, toss in your wood, close the door and walk away. Even my wife can use it. (and that is saying something. she is VERY girly) Don’t come back for 8 to 12 hours. 1 piece of wood = 1 hr of burn. I never loaded the furnace full, so I don’t know how long a burn it can have. But it can do at least a 12 hr burn 3/4 loaded. I got the h2o coil with it, which gave me 3 free showers a day. Wood usage was the same amount of the same wood as the winter before with the wood stove. If you recall that winter 2 yrs ago was no winter at all. Last winter just wouldn’t end, needed heat in june for crying out loud. So twice the winter and hot water with the same amount of wood, and 1 million percent easier.

As for customer service, they are amazing. I have never encountered such good service. There was trucking damage upon delivery, They wrote me up a repair quote the same day. I had an issue upon start up on a Saturday morning. I called them and the owner answered the phone and had my issue resolved in minute’s. ( a spring adjustment) I called on a weeknight at 7 o’clock with a question, again the owner answered the phone and answered my question. Darrell ( the owner) is truly excited by his unit, and how it works. American made, with true American quality, with old time American customer service. I am very pleased with the Vapor fire 100 and would happily recommend one to anyone. The only thing I don’t like is it’s hard to remember the spelling of Kuuma.

P.s It works great when the power goes out as well. And flue temp is around 250*.

P.ss I loved showing the guy’s that ride along with me all the houses that have smoke coming out of there chimney’s, then driving by my house and seeing nothing coming out of mine, not even the heat squiggles. They could not believe I had a fire going at the time.

Dan Westmoreland
Sandown, NH

Sauna Talk Podcast

Interested in learning more about our small business, wood burning, or saunas?  The sauna guru Glenn Auerbach interviews 3rd generation Finnish sauna stove master craftsman Daryl Lamppa… Listen Here


Poised For Growth

Lamppa Manufacturing Achieves Highest Certification.

TOWER— Tiny Lamppa Manufacturing, tucked away in an old creamery on a back street in Tower, makes the cleanest-burning wood furnaces in the U.S. And if all goes according to plan, they wo …Continue Reading


Iron Range Wood-Furnace Factory Needs Room To Grow

TOWER — They say Iron Range Finns are usually a reserved bunch, but Daryl Lamppa talks about his Kuuma wood burning furnaces with the zeal of a traveling street preacher selling the Good Book…Continue Reading

Proudly manufactured in the USA using American steel!

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The Kuuma customer family comes first at Lamppa Manufacturing. Phone, email or stop-in to the factory (we love to give tours) in Tower, Minnesota, and be greeted by our friendly employees. There’s a chance you will speak directly to Daryl Lamppa, the owner and inspiration behind the incredible innovations designed into every Kuuma product. We sell our products by referral and word-of-mouth, so your total satisfaction is what drives us.  Read More….