"I wouldn't worry too much about the past pressure as long as you don't have drippy faucets." ...
The part is a thermal expansion tank. It costs between $30 and $55 at any plumbing supply house. When it's missing from a ...
If you're seeing signs that it's time to replace your water heater and haven't bought one in a long time, it might be a little confusing. Your plumber might recommend adding a water heater expansion ...