Can someone give me the softening capacity of this unit (in grains). I
need to replace it and want to get a unit with the same capacity.

Thanks

All softeners have an adjustable capacity because all softeners have an
adjustable salt dose.

To learn how to correctly size a softener:
http://www.qualitywaterassociates.co...izingchart.htm
Then use the Calculator page there. Of course you must have your water
quality data first.

Gary
Quality Water Associates
http://www.qualitywaterassociates.com