Outdoor Wood Boilers > Outdoor Wood Furnace Information

HeatMaster G-Series vs. Portage & Main Boilers

Product Comparison

1. Efficiency

Most Efficient Outdoor Wood Boiler

HeatMaster G-Series boilers tested 10% more efficient than Portage & Main in EPA Phase II certification testing! That means for every 10 pieces of wood you burn in a P & M boiler, you will only burn 9 in a HeatMaster.

2. Longevity

HeatMaster outdoor wood boilers are made of corrosion resistant 409 stainless steel while P&M boilers use mild steel.

HeatMaster products only have vertical heat exchange tubes while Portage & Main boilers have horizontal heat exchange tubes which can accumulate moisture along the bottom causing corrosion, especially in mild steel units.

More on stainless steel in outdoor wood furnaces.

Cleaning an outdoor wood furnace. Tools

3. Maintenance

HeatMaster products require no brushing flues, scraping creosote, etc. while P& M boilers require much more maintenance.

4. Warranty

HeatMaster SS products carry their industry famous limited lifetime warranty. See graph below to see how it compares to what Portage and Main has to offer. More on the Heatmaster SS warranty.

  • Efficiency

  • Longevity

  • Ease of Use and Maintenance

  • Warranty

Bottom Line? HeatMaster products offer more bang for your buck!

Certified Boiler Treatment - Wood Furnace Water Treatment

Certified Boiler Treatment - Wood Furnace Water Treatment

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Pineview Woodstoves LLC

768 15th. Ave.

Almena, Wisconsin 54805


Pineview Woodstoves distributes MF-eSeries, Heatmaster G-Series, and C-Series Heatmaster outdoor wood boilers in Wisconsin and parts of Eastern Minnesota. Outdoor wood-fired hydronic heaters can heat multiple buildings, hot tubs, pools, greenhouses and more. A Heatmaster outdoor wood burning furnace eliminates most of the issues connected with indoor wood burning and can be connected to almost any existing heating system with very little difficulty.

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