PM Ultimizer Coal2

The Ultimizer Wood Series

The Ultimizer wood series is the product of more than 40 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.


Higher temperatures make complete combustion possible;
A cleaner and more efficient burn;
Eliminates creosote, moisture and their damaging effects;
A dryer, longer-lasting outdoor boiler;

Clean burning efficiency without the extra cost of an EPA gasification boiler;

A smarter design means smarter combustion.


Download the brochure

The following brochure includes general product information and specification of the wood burning models availabe. 

If you have any questions or require any further information... CLICK HERE!  or Call Toll Free: 1-800-561-0700