Ed Sirett wrote in message
news
snip

The problem is that a water softener is a _huge_ restriction on the flow
and
with any form of direct HW systems it will be the bottle neck.

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Is this your personal experience?

The Kinetico 2020c High Flow Softener has a service flow rate of 33 lpm and
a peak flow rate of 51 lpm. Providing that I use a suitably large pipe
diameter, is this really going to appreciably slow down my 30 lpm supply?