when my boiler comes on - for heating - it starts rumbling and screeching - like whale song. doesn't happen with the hot water but has been happening with the heating. also my pressure is dangerously low - below 0.7 - and i can't interest my landlord to get someone to talk me through how to reset the water pressure. basically it - the pressure - was reset on nov 14 (i had problems with airy radiators and someone came round to rebalance the system) but since then the pressure has gone from a healthy 1.5 to 0 and i'm sure it's not meant to drop that fast. or is it? can someone tell me how to up the pressure? i think my landlord wants to wait until i have no hot water and no heating before helping out. anyway, all tips welcome. ta
