20 years. All systems: standard water, recyc, gray loop, and legacy bypass. If your building is pre-renovation and you've still got Kelmore pipes, I'm one of maybe five people in the metro who still works on those. Everyone else will tell you to rip them out. I will also tell you to rip them out, but if you say no, I'll fix them, because that's your decision and I respect property owners even when they're wrong. I also do emergencies. "Emergency" means active water where water should not be. It does NOT mean "my faucet drips and I have company coming." That's an appointment. Had a call last Thursday, woman in Stavel Point, says it's an emergency. I show up, full kit, both boots. Her bathroom faucet was dripping at a rate of one drop per six seconds. She had timed it. I fixed it because I was already there and she'd already timed it and at that point you just respect the commitment. 95 CR/hr plus parts. I will be honest about what you need. I will also have opinions about your pipes. That part's free.