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We're in the countryside and there's a really long run of pipe and there's a regulator right off the mains

No water meter. There's about 250m of plastic from the regulator to our house. No change in water pressure. If we do get a leak even a small one we notice it straight away via the tap pressure

There is no one next door unless the pheasants have started a band

No pressure loss. It's an oil fired boiler which is in the garage. Honestly with the heating is on you don't even hear a gurgle in any of the rads. The heating system is still open vented.

I live in the countryside. Nearest neighbour is 250m away and each of us is connected to the main via a separate regulator

Hi Everyone, For the life of me I can't find the cause of this problem. Go to bed and usually within 30-60mins it starts off with a whine that rises and falls and gets louder and louder and lasts till early morning/midday. Now the sound upstairs I think it's resonating up by the cavity around...

cant fault it its 34yrs old:giggle: old Worcester Danesmoor. its only had a few jets & 2 fuel pumps

the boilers well by its sell by date but i thought id leave it till it goes bang. To be honest I'm surprised the heat exchanger hasn't rusted through. I did pose the question to the plumber if i switch the central heating to sealed system what is the likelihood of it blowing old joints that have...

yep, originally was a gravity fed HW cylinder but that was converted about 15 yrs ago to non vented so we could get rid of the tank. The boilers been there for a good 30yrs. Pulled the hatch off to close the AAV. There is one on the return line but its closed off with the cap. Strangely enough...

I'll close it off but surely a plumber wouldn't fit it on the return line? rather than the pressure side.

yeah they flushed it as it was pretty dirty before they refilled. i mean its all pretty much straight runs with 2 off the radiators teed off. just cant understand where the noise is coming from. The boiler is "old" but there's zero problems with the heating downstairs.

the 2 pipes i showed, the bottom is straight from the expansion tank cold supply the top is the vent that goes to the expansion tank. on the right hand side there's the flow at the top and the return at the bottom????

If I'm understanding you right. On the left side of the boiler the cold feeds at the bottom & the vent is the top pipe. The reason the pumps always been on setting 1 is that even before the extension when the pumps put on 2 or 3 the TRV's bounce and i presume the only remedy would be to fit bi...

You got me thinking after you mentioned the AAV's Looking at the one at the boiler am i right that the AAV should be on the pressure side of the pump?? if that's the case its on the wrong side. I assume to close them its just a case of screwing the plastic cap in??? it appears that one is closed...

Hi, The boiler has always been in the garage and now the header tank is also in the garage so the pipe run from the boiler to tank is less. Basically the two boiler to tank connections were just rerouted from where they went through the wall to the loft to the top of the garage to where the tank...

I'll have a look and get back to you.

I'll give that a go. one is fitted right next to the burner and the other is in the room where the noise is occurring but on the opposite side of the room. The green circle area is where the sound appears to be resonating

tried it, made no difference unfortunately

yeah, i shut off the large radiator across from the small one that seems to be where the noise is focusing. I'm just surprised at how much air is still moving through the system considering its only 4 rads and there's 2 auto air vents. one on the boiler and the other after the last radiator.

no garage is lower but the expansion tank is still a few feet higher than the radiators upstairs in the house. Tank was put right up in the apex of the garage roof. you still need a 4 step ladder on the garage roof beams to reach the expansion tank. House was a bungalow built with attic trusses...