Moving a treatment unit means installing it in a new place while carrying settings that were built for the old one. Treat the job as fresh from disconnect to first test, and do not assume the unit's settings still fit the new supply.

Step 1: Find out who owns the unit

Before you touch a fitting, check whether the unit is yours to take. A rented or landlord-owned unit, a unit tied to a service plan, or a unit whose warranty depends on the original address may not leave the house with you. Read the paperwork, and call the provider if the answer is unclear. If the unit stays behind, raise it with the new owner or landlord before you move in.

Step 2: Record what you have

Write down the make, model, and serial number, the settings on the control head, the bypass position, and the hardness or iron setting if the unit is a softener or iron filter. Note the last service visit, if there was one. Photograph the plumbing layout and the valve positions before you disconnect anything. These notes are what the next installer or technician will need, and they keep the new install from starting blind.

Step 3: Shut off, relieve pressure, and disconnect in order

Close the supply to the unit, open a cold tap downstream to relieve pressure, and drain the unit the way its manual describes. Disconnect the inlet and outlet, cover the open lines so debris stays out, and note which fitting came off which line. Keep seals, clips, and fittings in a bag labeled with the unit. One small missing part can hold up the whole reinstall.

Step 4: Pack for the trip

Keep the unit upright, keep resin, media, or cartridges in their original packaging or sealed where the manual says, and keep the unit out of an unheated truck bed in cold weather. Check the manual for the temperature range the unit tolerates. If the trip is cold, carry the unit in the cab or a heated space.

Step 5: Assess the new supply before you reconnect

The new house may be on a different water source. A city supply and a private well can differ in hardness, iron, pressure, and pressure swings, and a unit set for one may be wrong for the other. Get a water test for the new address before you assume the old settings are right. Check the cold-water pressure at the planned install point against the unit's listed minimum and maximum. If the unit is electric, check the outlet. If it drains, check the drain route. Check that the tank has clearance for service access.

Step 6: Reconnect, bypass, and flush

Connect the lines in the order the manual gives, and keep the bypass in its install position while you work. Open the supply slowly, check every joint as the system fills, and run the flush the manual calls for before you put the unit online. Some air in the lines is normal for a short time and should clear. If water keeps weeping at a joint, shut off and fix it before going further. If the new house needs a new tie-in or a change to the supply pipe, bring in a licensed plumber rather than improvising.

Step 7: Set the unit and retest

Enter the settings from your notes only after the new water test confirms they match the new supply. Then test the treated water at the outlet the same way you tested the source, and write the result beside the settings you used. Repeat the test after the unit has run for the period the manual suggests. The first result after a move tells you whether the install worked, so treat it as a checkpoint, not a formality.