Originally Posted by rmdrifter
To be absolutely clear: When I winterize I'm removing the canister, draining, and then it fills with antifreeze as does the rest of the plumbing system apart from the hot water boiler.
Then when I dewinterize, I remove the canister again, drain the antifreeze, and then put the filter in and fill with fresh water. Correct?
All correct but the last step.
You need to sanitize fw system before installing filter.
1/4 cup of bleach per 15 gallons of water.
Run all taps showers and stools till bleach can be smelled.
Let sit over night then drain fw tank and refill with clean water.
Flush lines out then remove canister and install filter.
Also make sure wh is still by passed through all sanitizing then when you install filter put wh in summer mode and make sure you fill it before turning on.