Installing a water softener in a pre-plumbed house is done by first cutting the incoming cold-water line and installing an elbow that leads to the softener. After that, you now connect the softener’s outlet to the incoming cold-water pipe. Normally, the water softener is installed to get rid of the magnesium and calcium piped water.
Water containing calcium and magnesium is hard water. Hard water stains your sink and fixtures, destroy your pipes, and makes it hard for the detergent to foam. Moreover, hard water makes your water taste bad or smell. This is the key reason why it is advisable to install a water softener in a pre-plumbed house.
Check the steps of doing it below:

Steps Of Installing A Water Softener In A Pre-Plumbed House
Steps | Works To Do |
Step 1 | Draining out the pipe |
Step 2 | Turning off the power to the water heater |
Step 3 | Finding out where to install |
Step 4 | Cutting the mainline |
Step 5 | Installation of an elbow fitting |
Step 6 | Attaching the pipe |
Step 7 | Fixing the drainage |
Step 1: Drain Out The Pipes
Shut off all the water to your place from the mainline. Open the tap from the lowermost level to ensure all pipes are drained-out and allow the water to flow out. You might be wondering which tap would be at the lowest level? Probably the one you have in your basement. Having known that, you can proceed to the next step.
Step 2: Turn Off Power To A Water Heater
Please turn off your water heater and ensure all power flowing to it is switched off.
Step 3: Find Out Where To Install
You ought to connect the water softener along the mainline. This should be done before the line feeding into the water heater.
Step 4: Cut The Mainline
Cut the mainline using a pipe cutter. Ensure to collect any water that comes through. You can opt to use a bucket to collect the water.
Step 5: Install An Elbow Fitting
Connect an elbow fitting to the mainline to let you feed the water softener. It would be best if you had a bypass valve to let you feed the water softener.
Step 6: Attach The Pipe
Measure the pipes leading to the bypass valve and cut to fit. Make sure you solder all the nipples and fittings and then join the pipe to the bypass valve. At the same time, when attaching the pipe, use the compression fittings that come with the unit.
Step 7: Fix The Drainage
Get the unit drain into a floor drain, a sump pump, or a utility sink. Clump the tube of your water softener and feed to any drainage you are using. Ensure hose is 2-inch above the drain hole to prevent back siphoning of water. You may now connect the run-off tube to a brine tank.
You are now prepared to use a water softener. Switch the valve to bypass and allow water to flush through to remove any sediment and debris present. Using a plug, insert a unit into a power outlet, and set the valve to the backwash spot. Ensure to open the valve gradually to allow water- in as it discharges out the trapped air in the pipes. Always use the manufactures manual while setting up the flashing schedule and adding salt to the water tank.
Can You Install A Water Softener Without A Loop?
A soft water system cannot be installed without a water softener loop. If you want to prolong your appliance’s life or avoid scale buildup, then it is good to install a water softener with a loop.
How Much Does It Cost To Have A Water Softener Installed?
Water softener installation costs $800 to $2000. The price comprises materials and labor and varies depending on the size of the home, capacity, and grade of the water softener, type of water softener, and installation complexity.
How Long Does It Take To Get Soft Water After Installing A Water Softener?
It will take approximately two weeks to remove hardness from your water. However, the softener will start working 85-90 minutes after installation. During which it will complete the auto-regeneration cycle to clean the treatment medium. It reverses the chemical reaction to remove undesirable dissolved minerals that makes water hard and unsuitable for drinking.
Where Is The Best Place To Install A Water Softener?
The perfect site for a water softener is on the level ground, near the water spot of entry to your house. If your house uses well water, the entry spot should be near the pressure tank. If your house uses city water, it is normally next to the water meter.
When Should A Water Softener Be Installed?
You should install a water softener when you notice the following signs:
1. Your clothes are gray and faded
2. Scale buildup on your appliance
3. Stains on the bathtubs and sink
4. Water bill is skyrocketing
5. Glassware is hard and easily damaged
6. Plumbing is in constant need of repair
What Is The Average Life Expectancy Of A Water Softener?
The life expectancy of water softener depends on the type and quality bought. However, on average, it will take 10 to 20 years before you think of replacing it. If you install the Kinetico system, it can go up to 20 years, while a single tank electric water softener might take 12 years. However, if you notice any saltwater sign after 5 years, it is best to call a plumber to repair. Ignoring any issues can lead to an expensive failure in the long run.
Final Word
Installing a water softener in the pre-plumbed house is an easy process if you are a DIY enthusiast or trained plumber. You need to follow the seven steps provided above, and your system will be up and running. If you encounter any challenges, you can consult your expert plumber who can charge between $800 to $2000. When all is done, hard water will be softened to make it fit for home use.