The construction on the house is build a 2 level/family Modular Home. We have hot water heating system and for each floor with 2 zoning for their boiler (in the basement). The 2nd floor appears to have serious banging noise on one of the baseboard in the bedroom and some banging in through out the house. The weird thing is it only bangs/hammering at night during certain time at night (11pm till early AM time). We kept the thematic at 73 and leave it untouched to see if the banging and hammering occurs at the same time every night, which confirmed to be yes. Our plumber came to bled the systems several time and still not helping at all.
Please help me!!
Thank you,