Installation, maintenance, and repair in Campbell River, Courtenay, and the Comox Valley. Mark Harper has nearly 4 decades of experience with gas, oil, and electric heating systems. Mid Island Heating Services offers certified and experienced inspection of gas and oil lines, gas and oil tanks, and heating systems in general. Furnaces, water heaters, space heaters, and cooking ranges. Mid Island Heating Services will professionally install the system that suits your needs. more... See more text