Advance Mechanical Contractors

Advance Mechanical Contractors operates as a plumber in Signal Hill, California, with a 4.9-star rating drawn from 172 customer reviews. The business serves Long Beach, the Gateway Cities, and North Orange County, delivering residential, commercial, and industrial plumbing solutions. Founded in 1923, the company remains family-owned and maintains a team where many specialists have accumulated 10 to 20 years of hands-on experience.

What distinguishes this contractor is the depth of tenure among its technicians and a service catalog that spans the full scope of plumbing work. The team handles everything from drain clogs and leak repairs to full repiping, sewer line replacements, water heater installations, and complex commercial projects. They also offer specialized services including backflow testing and repair, hydrojetting, trenchless sewer repair, and tenant improvements for commercial spaces.

Reviewers consistently call out specific technicians who delivered solutions when problems seemed stuck. Ray quickly diagnosed a drain issue that another plumber had misdiagnosed, then explained maintenance steps the homeowner could handle. Frank managed a shower drain replacement during a bathroom renovation, coordinating permit clearance with city hall on the same day so work could continue without delay. A reviewer described a same-day visit during a condo project, with the technician removing boots before entering the unit and installing a garbage disposal after HOA approval.