In this video, This Old House plumbing and heating expert Richard Trethewey removes the impurities, VOCs, and excess minerals from water with a simple reverse osmosis water filter system.

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Plumbing and heating expert Richard Trethewey heads on a house call to help a homeowner with a water issue. After the homeowner explains that she’s had a problem keeping aquarium fish alive, Richard surveys the plumbing system and comes up with a solution: a reverse osmosis water filter.

Difficulty: ⅖
Cost: Around $200
Time: 4 hours

Where to find it?
Richard installs a water filter ( OptimH2O® Reverse Osmosis + Claryum® [[ Ссылка ]]) under a sink. After turning off the cold water by turning the valve under the sink, he disconnects the cold-water line with a wrench. Richard then installs the brass "T" by hand screwing it to the cold-water line. The system comes with white ¼" and ⅜" tubing to connect the filtration cartridges and water tank to the water supply. Using a hand drill, Richard makes holes on the manifold to add mounting screws.

Richard removes an old sprayer hose from the sink to install a dedicated system faucet. He uses the ⅜" and ¼" red tubing to connect to the cartridges and the water tank. Richard positions the connector above the trap and drills a 7/32" hole into the drainpipe. He checks that all tubes are fully pushed in before turning the cold water supply back on.

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Tools:
Adjustable wrench [[ Ссылка ]]
Pencil or marker [[ Ссылка ]]
Screwdriver [[ Ссылка ]]
Drill [[ Ссылка ]]

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From the makers of This Old House, America’s first and most trusted home improvement show, Ask This Old House answers the steady stream of home improvement questions asked by viewers across the United States. Covering topics from landscaping to electrical to HVAC and plumbing to painting and more. Ask This Old House features the experts from This Old House, including general contractor Tom Silva, plumbing and heating expert Richard Trethewey, landscape contractor Jenn Nawada, master carpenter Norm Abram, and host Kevin O’Connor. ASK This Old House helps you protect and preserve your greatest investment—your home.

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How to Install a Reverse Osmosis Water Filter | Ask This Old House
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