Where should I buy my water softener from (and capacity question)?

[amateurplumber]

Look to buy a Fleck 5600sxt 48,000 grain capacity softener.

I've been told ohiopurewater.com and qualitywatertreatment.com are both good sites, among others. Well...which would you choose?

Also, i've heard that the sizing calculators are wrong (on these sites)...is there any better way to size it?

Thanks!

 

[eliteplumbing]

Generally sizing has to do with the number of people that are using the water and I have not used the methods on these sites. It would be my recommendation to chose a local plumber you trust or if you are intent on doing it yourself then do some research on your local plumbing code to see if they have any requirements and then I personally would size the system to provide for the maximum occupancy of the structure.