Are you thinking water heater or filter? Because I’ve never seen a water softener that can fit under a sink or on a showerhead. Unless you’re talking about phosphate feeder cartridges but those don’t actually soften water they just help keep limescale from sticking.
Are you thinking water heater or filter? Because I’ve never seen a water softener that can fit under a sink or on a showerhead. Unless you’re talking about phosphate feeder cartridges but those don’t actually soften water they just help keep limescale from sticking.
https://www.homedepot.com/p/Lukvuzo-Heavy-Duty-No-BS-Removable-Shower-Head-Filter-for-Hard-Water-Chlorine-Water-Softener-Shower-Head-Filter-1-Pack-HSPH007FS089/330537478
Can’t speak to how well it works, I just know it exists.