How do I replace a bathroom faucet?

Replacing a bathroom faucet is a manageable DIY project for most homeowners, though it requires some basic plumbing knowledge and the right tools. The key is taking your time with the preparation and ensuring you have a proper water shutoff.

Start by shutting off the water supply at the shutoff valves under the sink (turn clockwise) or at the main water line if individual valves aren't available. Turn on the existing faucet to drain any remaining water from the lines. You'll need an adjustable wrench, pliers, plumber's tape, and possibly a basin wrench for tight spaces under the sink.

Remove the old faucet by disconnecting the water supply lines from underneath (these may be threaded or compression fittings) and unscrewing the mounting nuts that hold the faucet to the sink. Single-handle faucets typically have one large mounting nut, while widespread faucets have separate nuts for each handle and spout. Clean the sink surface thoroughly once the old faucet is removed.

For installation in Ottawa homes, ensure your new faucet matches the existing hole configuration in your sink - single hole, 4-inch centerset, or 8-inch widespread are the most common. Many older Ottawa homes have unique sink configurations, so measure carefully before purchasing. Apply plumber's tape to threaded connections and hand-tighten supply lines first, then use a wrench for a final quarter-turn to avoid over-tightening.

Test your work thoroughly by turning the water supply back on slowly and checking for leaks at all connections. Run both hot and cold water for several minutes to ensure proper flow and temperature mixing. If you encounter corroded supply lines, unusual pipe configurations, or persistent leaks, it's worth having a licensed plumber complete the installation to avoid water damage.

For complex installations or if you're uncomfortable with any step, Ottawa Bathrooms offers fixture installation services with proper warranties and insurance coverage.

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