Fantastic service. They charge a set rate per hour. Many others charge by the job. A competitor quoted $1,430 parts & labor for the job (change faucet cartridges in 4 showers). Tierney did the same job for $217.50 and I supplied the $71 in parts. So $288 total cost versus $1,430. On top of that, the plumber that came out was very nice, respectful, knowledgeable and worked fast and efficiently. I highly recommend Tierney Plumbing!.