Our basement has some old, irregular plumbing. When the outflow began to back up we called Archie Horn & Son Ltd. They accommodated us early the next day. The job ended up requiring two plumbers who worked quietly and effectively to solve the problem. Afterwards, Chris kindly explained the nature of the problem and how they collaborated to work around some of the irregularities. They cleaned up their work spaces well and capped a couple of potentially troublesome elements in the system. The cost was below what we expected, particularly as the work required two experts. We would recommend Archie Horn & Son Ltd. to anyone in need of residential plumbing repair.