In this article, we’ll focus on fixing a cartridge-style faucet. Cartridge valves have a single handle and operate when the cartridge slides in and out. Don’t confuse them with single-handle ball-style faucets, which have a dome-shaped casing under the handle.
Turn off the water at the fixture shutoff valves or at your home’s main valve. Turn on a faucet to make sure it’s off. Remove the handle as shown in Photos 1 and 2. If the handle sticks, try heating it with a hair dryer set on “hot.” If you still can’t get it off, use a special handle puller ($10 to $20 from a plumbing parts distributor or home center).
Virtually every faucet manufacturer has a different method of securing the cartridge to the faucet body. Look for a clip or spring and remove it (Photo 3). Cartridges are often difficult to pull out. Some manufacturers include a removal cap with new cartridges. Align the cap with the old cartridge ears and try to twist the cartridge loose. Then pull it out with a pliers.
If you can’t budge the old cartridge, you’ll need a cartridge puller ($20 to $30 from a plumbing parts distributor). Make sure the one you buy works on your brand of faucet. Look on the handle or trim for the faucet brand or manufacturer. A knowledgeable person at a plumbing parts store may be able to identify the brand and model from a photo. Review Photos 4 and 5 for instructions on using a cartridge puller. Make sure you twist the cartridge loose before pulling it out (Photo 4). Take the old cartridge with you to a plumbing parts store or a home center to find an exact replacement ($15 to $25).
Lubricate the cartridge sides, O-rings, retaining clip, cartridge stem and handle screw threads with plumber’s grease. Slide the new cartridge into the faucet body. Some cartridges can only be installed one way (to avoid reversing the hot and cold), so follow the enclosed instructions. Reassemble the remaining faucet components.
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