Who services tankless (on demand) water heaters?

[KeaauRich]

Vancouver: that's what we thought too, but when our "still under warranty" tankless died, the manufacturer refused to cover warranty repairs because we hadn't performed regular descaling. Our factory-authorized plumber fought the good fight for us re: catchment water, but they refused to back down. Descaling isn't that complicated on our unit, so we now do it regularly and keep good records.