First Klass Mechanical Is Here For All Your Plumbing, Furnace Install, Air Conditioning & Gas Fitting Needs. Our plumbers troubleshoot and unclog/repair leaks and clogs in sinks, toilets, faucets, bath tubs and sewer pipes. We specialize in Heating (HVAC) and Air Conditioning Installation and Repair. First Klass Mechanical heating technicians repair and replace hot water heaters and tanks, boilers and furnaces. Looking for reliable Gas Fitting and Installation of your furnace, stove, or water heater? First Klass Mechanical’s gas fitters do so much more than that. SERVING KELOWNA AND THE OKANAGAN VALLEY SINCE 1990! Make First Klass Mechanical your first call for commercial, industrial and residential projects in Kelowna and area.