Unfortunately with the spring we have had, it was impossible to tell that the system was low. Having had it charged in the spring, I would never had expected it to be low so soon. Had it been warm, I would have caught it much sooner. Yes, I am in Canada, and MB Canada has no rebuilt compressors. $1400.00 for the compressor, some installation and taxes, brings it to about $2100.00. I really hope there's a warranty on the new one too.