Some models in the Ecoteck range of wood-pellet stoves can be ducted, which connects them to a system of ducts in order to distribute warm air to other rooms in the house. Ducted heat diffusion uses these superbly functional stoves to their fullest potential. Ducted heat-distribution systems can turn wood-pellet–burning stoves into extremely flexible heat sources that are easy to install and operate. Ducted diffusion enables just one stove to provide warmth for an entire house. Contact: (866) 361-7355 or www.northlanddistrib.com.