Hello: You may have high water pressure. The only way to tell is to get a gauge and put it on a hose bibb downstream of the pressure regulator (if you have one). Pressure should be 40 to 60 psi. It should never exceed 80 psi. What pressure do you read and do you have a regulator?
Next would be to pose your question at http://www.heatinghelp.com on “The Wall”. Lots of good heating contractors show up there 😉