I recently purchase a 10 year old home in Colorado with how water baseboard heating on several zones. The master bedroom zone makes creaking sounds and you can hear the water swishing through the pipes. On the main level there is a zone that scares the heck out of me coz it makes clanging sounds that sound like a truck hit the house! (Just a loud bang once every now and then). I see the past owners had air bled from the system last season. Is that all I need to have done and is it easy to do yourself and how often would it be necessary? Thank you!!