: Newer digital versions (like those available on Culligan Harvey ) provide clear steps for pairing the "myHarvey" app with the unit's i-Lid. Cons :

The Harvey HV3 uses flexible, high-quality hoses to connect the unit to your plumbing.

: Includes essential warnings about avoiding heat sources (boilers) and preventing freezing conditions.

The manual strongly recommends installing the softener on a dedicated cold water line, just after the main stop cock.

Legally, you don’t if you are competent. However, the manual recommends a qualified plumber or water treatment technician to comply with water bylaws (especially the air gap for drainage).