Dave Blair Plumbing travels throughout the Los Angeles area for residential plumbing repair, replacement, and new installation. Whether you’re getting a drain unclogged or a water heater replaced, you need an expert who can get the job done quickly and carefully.Dave Blair Plumbing travels throughout the Los Angeles area for residential plumbing repair, replacement, and new installation. Whether you’re getting a drain unclogged or a water heater replaced, you need an expert who can get the job done quickly and carefully.