Hard water in water heater

[Mattou01]

My cold water is soft but my hot water is hard. I have flushed my water heater and drained it and filled it back up with cold soft water. I immediately tested it coming out of kitchen faucet and it tests hard again…about 50ppm of Hardness. I’m perplexed.

I have a water softener hooked up before the water heater.

 

[Texas Splash]

I'm confused. Ideally the water supply line coming into the house from the street goes straight to the water softener so that all interior home water is softened before being split to the cold lines and water heater. You set up is different? Maybe post some pics?

 

[Mattou01]

My water softener is before everything except outside hose bibs. I think it’s called “home run” plumbing.

 

[Texas Splash]

My water softener is before everything except outside hose bibs.

How old is your water heater? Any chance the softener was between regen cycles when you filled-up the water heater? Maybe the cold water wasn't quite as soft as expected?

 

[Texas Splash]

Here was a good discussion.

Cold water is soft, hot water is hard

Hoping for some knowledgeable help. Thank you in advance. We thought our Kinetico softener was not working. I tried to manually regenerate it but when I turned the dial, it felt like it wouldn't go any further and it did not regenerate. Guess I needed to push past that point. The serviceman...

terrylove.com

 

[Mattou01]

3 years old. I tested cold water before and after refill of water heater. It was soft.

 

[proavia]

Test the CH of the water before it enters the softener - usually the hose bib near the outside water shutoff will have hard (unsoftened) water.

My unsoftened water has a CH of about 225-250 ppm. My softened water - cold and hot - is usually in the 0-50 ppm range.

Post some pics of your softener, water heater and the plumbing near each.