Mark, his 2 sons, his journeyman, electrician and plumber did an outstanding job! This job was unique and customized to our specific requirements, the most important rooms were equipped with separate thermostats and heating-circuits. This fundamental re-build has an ultra-high efficiency IBC boiler at its heart. In the basement, the air-heating system was replaced by water-heating system. On the main level, the master bed & bathroom was included in the water-heating system. On the main floor, the kitchen-dining-room and lounge is an L-shaped open concept, with a separate study; they remained air-heating, supplied by a new air handler. Hot water is supplied by a new indirect heat storage tank. Mark gave excellent advice and also advised on resolving a few basement issues in our 1977 home, and was always open for discussion and new ideas. With winter coming, our home has never been this comfortable!