BobVila.com

Replace an existing single-handle faucet with a new model that matches your sink configuration.

The Franke tri-flow Corinthian faucet is being installed now that the countertop and sink are in place. The faucet features hot, cold, and filtered water. The filtration chamber has a ceramic porcelain exterior with an extruded carbon filter inside. Franke recommends that homeowners change the filters every six months. Frank Lowry of FJ Lowry Plumbing and Heating installs the faucet from underneath. The lines come dropped down and ready to attach, which makes it easy. Lowry installs the filtration system and attaches it to a wall-mounted holder. Luke Groden from Boston Basins, a Franke distributor, shows Bob the specialized ball valve with a shutoff to make filter changes simple. The braided hose that attaches the filter to the faucet has a pressure fitting that grips with stainless-steel teeth inside to withstand high water pressure without pulling apart or leaking. Lowry attaches the hoses to the filter, then solders the hot and cold points underneath.

Carlos Leuchtmann of Blue Ridge Plumbing installs the Moen filter faucet in the kitchen. Unlike other filters, the Moen faucet has the filter cartridge right in the spout. A three-volt lithium watch battery is popped into the housing, then the cartidge fits in, and the entire assembly slides into the faucet and locks in place with a quarter turn. The battery enables the filter light to tell homeowners when the filter needs changing. The black nose piece on the front of the faucet is the filter button. When pushed, filtered water comes out a separate small spout alongside the main water spout. It only filters water when pushed. The package comes with a spare filter for easy changing.

Bob meets Steve Bottazzi, a plumbing contractor. Steve is installing a lavatory in a vanity by installing the faucet on the lav first, then putting the trap on the lav, and finally placing the sink on the vanity and making all the proper connections.

Freeze-proof outdoor faucets are the best replacement option in areas prone to freezing and low temperatures. The project requires drilling and soldering, so be sure you are confident taking on the project.

Outdoor faucets can develop leaks over time. Repairing or replacing the faulty parts will require a few standard tools.