Coming home from Hawaii, I discovered a mess of my plumbing situation and I was referred to Mark because of his expertise in under-floor heating systems. Only a few technicians in Alberta have his technical knowledge and capability in these complex systems. His challenge was to replace my antiquated system that had not been properly installed and which provided insufficient heat to my home. It quickly became apparent that the scope of the project encompassed the replacement of 2 furnaces, humidifier, water tanks, and all under-floor heating... all during a time of one of our worst winters in 30 years. Through his ingenuity, his team was able to install under-floor heating in difficult to reach spaces. All of this happened with minimal disruption to my home (and life). The team was very courteous, working late hours to get the project completed. The team had a great attention to detail and kept my home very clean. I would highly recommend Mark and his team.