Portage & Main

Ultimizer Coal Series


Smart Burning Made Easy!

Call | 866-301-4952


BL 25X34 | 28X40 | 34X44 | 40X44


The Ultimizer wood series is the product of more than 50 years of research and development that has earned Portage & Main Outdoor Boilers the reputation as an industry leader. With four sizes available, heating from under 2,000 sq ft to 12,000 sq ft, producing up to 500,000 BTUs. The Ultimizer can be connected to virtually any existing forced air or hydronic radiant heating system. Heat your home, domestic hot water, other buildings, hot tub, swimming pool, and more. In case you are looking for an EPA approved Wood Gasification Boiler we suggest you have a look at www.polarfurnace.com

Portage & Main ULTIMIZER

Portage & Main – Fireglow Process


Less Wood | Save Money

Portage & Main conventional boilers have set the bench mark for efficiency for over 50 years. Our boilers burn 33 – 50% less fuel than any other brand


Optimum burn | Save Time

Our R&D team designed a conventional/gasifier boiler to achieve optimal combustion with a refractory firepot lining 


12+ Hours Longer Burn

Our technology turns smoke into usable heat . This sectional boiler design resulted in  user friendly, low maintenance & higher efficiency boiler

Unique Features & Benefits

Introducing the ultimate solution for your outdoor heating needs

The smarter design of our boiler achieves optimal combustion using a refractory firepot lining which was the only way to prevent wood burning against the water & resulting in a cleaner and more efficient burn.

With higher temperatures, complete combustion is made possible, eliminating the damaging effects of creosote and moisture.

Not only does this provide clean burning efficiency, but it also extends the life of your outdoor boiler.

Enjoy a dryer, longer-lasting outdoor heating experience with our innovative design.

Most Trusted Outdoor Wood Boiler

since 1973

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About Portage & Main

Our head office is located in Prince Albert, Saskatchewan, Canada. Our dealer network spans North America and we would be glad to put you in touch with one of our knowledgeable agents. Our staff oversees the development of new products, monitors production, designs heating systems, and offers tech support for installers. All our wood furnaces are designed for installation outdoors and deliver wood heat indoors.







(306) 922-1722


Monday-Friday : 8am to 5pm CST

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