In May 2023, I experienced water dripping from faucet and paid ~$450 to replace entire shower cartridge + hardware by Nima. After 4 months, hot water stopped coming out from the same faucet. We called Nima and without looking inside the faucet system, he insisted that it must be a problem with the condo building leaving sediment causing a clog and that I need to pay him another $320 to fix it.
We related this issue to condo management and they said that no other units had this issue and since it was localized to the same shower, it must be cartridge problem again. I called New Canadian Drain and Plumbing and after going back and forth, Nima still insisted I pay, but a little less at $250 instead. However, at that point, I've already started having doubts because we've never had hot water just suddenly stop working. What is the probability of this happening only to this shower where the entire cartridge and hardware are already replaced but not happen to say the second washroom?
So, I decided to find a new plumber. The new plumber who fixed the issue said that the problem is indeed a result of poor workmanship.
I'm sharing my experience here because I hope others don't have to deal with what I have experienced. My condo management said that other plumbing companies offer warranty on their work. Unfortunately, it seems like this does not apply to New Canadian Drain and Plumbing.