Water Softener - first time home owner
We are first time home owner and are considering getting water softener system (especially for the tankless water heater, as its spec for water is 200 mg/L for hardness). We are completely new to water softener (or plumbing or anything home improvement related), so please forgive me if I sound too newbiesh. I did spend few hours reading this forum but not sure that's enough.
Here are some rough facts and estimates:
Hardness: 10~15 grains per gallon
Iron: not an issue
Water usage: we are very frugal (230 gallons per month; need to confirm this number after I got home as my wife is not very good at math)
Family and home size: growing family, 2 adults, 1 toddler at 3 year old and perhaps more coming. Home only 1800 sqft with 2.5 bathrooms.
Pipe size: 1.25" with a loop inside the garage
SFR: 9 gallons per minute (7 seconds to fill 1 gallon container with both hot and cold water on at the tub)
Here is the spec what the Watts dealer (via Costco) recommends (I left out unimportant ones):
Maximum compensated hardness (grains) 90
Maximum ferrous iron reduction 10 ppm
Minimum pH 7
Super Fine Mesh Resin 1 cu ft.
Salt usage (lbs) / Capacity (HC - High Capacity) 10 /30,000
Salt usage (lbs) / Capacity (HE - High Efficiency) 5 / 1,200
peak Flow rate / psi drop 10 gpm /14.5
Pressure drop @ service flow rate of 4 gpm 4.0 psi
Water Pressure (minimun -maximum psi) 20 /120
Plumbing Connections 3 /4 - 1" MNPT
It looks like we don't really need a large softener, but SPF and pipe size may require a larger system. We never had softener before and is not sure about the benefits, so we are not sure we need to spend $2k+ toward a large system (we prefer Culligan, Ecowater, Kinetico, or local dealers as we are not DIY types and willing pay a little more).
Any help is appreciated.