How Does the Wood Boiler Work?

Simple! The interior workings of the outdoor wood furnace consist of a firebox, and within the firebox is a chimney, a grate with a powered blower that forces air up into the fire for a greater and more efficient burn. Wood is loaded into the firebox the same way as a traditional fireplace.

Surrounding the firebox is at least a 120 gallon water jacket. The wood is burned in the firebox, thereby heating the water in the surrounding water jacket.

A pump at the back of the outdoor boiler sends the heated water on a continuous loop to the house through an insulated PEX line to a heat exchanger on your furnace and the water heater inside your home, then back again for reheating.

More connections can be made to heat a pool, a sauna, a hot tub, a garage and other buildings. For this, a second pump would be installed and a second set of PEX lines would be connected to the outdoor furnace for running to another heating load. Insulation surrounds the water jacket so that the water temperature is not compromised by weather.

The firebox is surrounded by water along with the ash pan
and a portion of the chimney as well, extracting as much heat as possible from the red hot coals. The chimney protrudes down into the firebox about 1 foot from the bottom so that smoke, and more importantly heat, is trapped so it doesn’t quickly escape out the flue. This also creates a second burn sequence to more completely burn the gases and wood. Efficient design ideas with proven results!


What Kind of System Do You Have?

Forced Air Furnace and Water Heater
working with the
Nature’s Comfort Outdoor Boiler
Direct Plumbed Boiler
working with the
Nature’s Comfort Outdoor Boiler
Boiler with Baseboard Heat
working with the
Nature’s Comfort Outdoor Boiler