Ask This Old House plumbing and heating expert Richard Trethewey installs an under sink water filter that can remove most contaminants
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Time: 1 hour
Skill Level: Moderate
Tools List for Installing a Reverse Osmosis Water Filter:
Adjustable Open Ended Wrench
Reverse Osmosis Filter
3⁄8” x 3⁄8” x 1⁄4” compression T fitting
1. Before doing any plumbing work, turn off the water supply at the water main.
2. Mount the filters to the inside of the kitchen cabinet.
3. Remove the hand soap dispenser or side sprayer to allow for a hole for mounting the new faucet.
4. Pass the tubes through the mounting hole and connect them to the faucet base.
5. Mount the faucet base to the sink or counter using the supplied toggle bolt and a screwdriver.
6. Connect the water line to the faucet and attach the faucet to the faucet base.
7. Add the compression T fitting to the existing cold water supply to allow connection to the new water filter. Use a wrench to tighten the connections.
8. Install the drain adapter to the existing drain piping and connect the drain tubing to the new drain adapter. You may need to modify the existing drain piping.
9. Connect the final piece of tubing to the pressure tank and tuck the tank under the sink.
10. Turn back on the water supply.
Richard installed the Twist and Lock Reverse Osmosis Filtration System, which is manufactured by GE Appliances ( available at home centers.
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How to Install a Reverse Osmosis Water Filter | Ask This Old House
- November 26, 2020