I had a new natural gas boiler installed just over a year ago. It seems to make a slight rattle/ bang sound when it kicks on! what can I do to remedy the problem
What you have happening is called delayed ignition. It is usually caused by dirty burners or burner orifices. Have the boiler cleaned and serviced. It should be serviced at least annually anyway.
By all means clean the burners and make sure that the damper is opening in a timely manner. It also could be a sticking flo check or a zone valve, in all reality you should get a good licensed plumber to check it out. There's way to much that could be wrong with the little bit of info your giving.
