1. Shut down the water supply to your house. In colder climates, your water shut-off valves are usually located in the basement. You can spot them because they’ll be attached to a meter. In warmer climates, the meter and two valves may be outside on an exterior wall or tucked away in an underground box with a removable lid.
2. Let the cold water drain from your system.
3. Find an easy-access spot to place the water filter (you’ll thank me for reminding you of this later when you need to change the filters) near the wall on the main line before the water heater.
4. A template should be included with the water filter. Put a bucket under the spot where you’re going to cut in case there’s any leftover water, and use the template to cut the water line. After you cut, make sure there’s enough room for the entire filter system.
5. There should be inlet and outlet sides to your water filter system. Install both these adapters onto the filter.
6. Your filter system should also come with compression fittings. Install these to the water lines and the adapter couplings.
7. Attach the filter to the wall using the mount that should come with your filter system.
8. Turn your water supply back on and test it out! If there are any leaks, tighten things up or adjust the fittings.
Not sure what type of water filter to get for your home? Check out How to buy a whole house water filter.
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