The market for wood-gasification boilers is growing in North America. Most are used in rural areas where natural gas in not available, and thus the cost of firewood is often very competitive against the alternatives of No. 2 fuel oil or propane.
North American hydronic professionals can now choose from dozens of modulating/condensing (mod/con) boilers. Many are designed for wall-mounting. Those who design these boilers strive for small enclosures and low weight.
For decades, well-designed and -installed hydronic heating systems have earned a reputation for superior comfort. Still, potential customers who understand and desire the benefits of hydronic heating often ask, “But how does this system provide cooling?”
Interest in biomass heating systems continues to rise, especially in rural areas of the United States and Canada. Although plenty of devices are available that burn wood to heat water, the state-of-the-art device is a wood-gasification boiler.
Residential solar combisystems provide domestic water heating and some percentage of space heating. Although less known than domestic hot water-only systems, combisystems can be practical and efficient if properly sized and designed.