Portage and Main without a stoker:
Model Retail BTU's Heating Area(approx)
ML30 $7,900 175,000-225-000 up to 5,000 sq ft
ML 36 $9,200 225,000-300,000 up to 8,000 sq ft
ML 42 $10,600 300,000-500,000 up to 20,000 sq ft
ML 54 $18,500 850,00-1,000,000 up to 30,000 sq ft
The above price is for units without a stoker. (This means you will have to feed it wood and/or coal by hand). We recommend having a stoker opening installed at the factory so the unit can be upgraded to a self feeding unit in the future. The stoker opening is an additional $450. If you choose to upgrade in the future, the stoker alone is approx. $7500.
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Portage and Main with a stoker:
Model (coal burner) Retail BTU's Heating Area(Approx.)
ML30 $15,100 325,000+ up to 10,000 sq ft
ML 36 $17,200 500,000+ up to 20,000 sq ft
ML 42 $18,300 750,000+ up to 30,000 sq ft
These are self feeding (coal) and self cleaning (ash). They will burn coal for weeks or months without feeding them.
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Price does not include coal bin, propylene glycol ( approx. $14 per gallon ), insulated underground pipe, pump and shipping costs ( Approx. $1,400 into Palmer, AK)
It is a lot of money..............We have a ML 36 in use in Seward. Our heating / hot water bill will drop this year from about $14,000 to $2,500. We will pay for our Portage and Main in less than 2 years. After that, it will pay us $10,000+ per year.
Coal bins can be pre-made and delivered with your unit or homemade from wood, concrete or steel. They can be loaded with an auger or loader. The coal can be gravity fed directly into the boiler or be moved with a cross auger from a large coal bin to a small (i.e. 1000 lbs.) hopper attached to the Portage and Main.
Coal will freeze together, so the hopper feeding the boiler needs to be above freezing temperatures. This is easily done with insulation and a heat loop from the boiler.
Come and look at a Portage and Main Boiler and see for yourself.
