Hi,
We have a four storey house, including a basement - which is where the boiler and the hot water cylinder are both located, which from my very limited plumbing knowledge (obtained from reading posts in this forum) is a sealed system.
We only bought the house earlier this year. It is quite old, but the boiler and certainly the cylinder system are all quite new.
Initially, after moving in during Spring, all the radiators which we turned on (using either the TRV, where fitted, or just a simple flow valve) seemed to work ok. However, when the weather started to get a little cooler a couple of months ago, I noticed that the top floor rads were cooler, and the heat was 'patchy'.
So I tried to bleed them (when the heating was on). This seemed to work OK for one, thankfully that in my daughters bedroom, as air and then water bubbled out (but not free flowing), and this rad is now working reasonably well.
However, only a very small amount of air came out of the others and then no more, nor any water - nothing happens at all now when I open the bleed valve, no air or water. If anything the radiators are now even cooler after my first attempt to bleed them, but not sure if thats coincedental given the onset of Winter - thats what I'm telling my wife who thinks my basic DIY effort to sort the problem has made it worse..!
All the upstair rads have TRVs and I have checked the pin - all move OK.
The flow pipes coming up out of the floor to each are lukewarm at best, whilst the return pipes on each are red hot.
In addition, after leaving the CH on for a while, these upstairs rads will eventually get lukewarm - but typically one side is hotter (eg that closer to the wall) and similarly one half is also a little hotter (that on the same side as the return pipe).
Any thoughts from the experts would be very much appreciated - as we have a houseful of guests coming shortly for christmas and I dont want to freeze them...!!
Many thanks in advance.
We have a four storey house, including a basement - which is where the boiler and the hot water cylinder are both located, which from my very limited plumbing knowledge (obtained from reading posts in this forum) is a sealed system.
We only bought the house earlier this year. It is quite old, but the boiler and certainly the cylinder system are all quite new.
Initially, after moving in during Spring, all the radiators which we turned on (using either the TRV, where fitted, or just a simple flow valve) seemed to work ok. However, when the weather started to get a little cooler a couple of months ago, I noticed that the top floor rads were cooler, and the heat was 'patchy'.
So I tried to bleed them (when the heating was on). This seemed to work OK for one, thankfully that in my daughters bedroom, as air and then water bubbled out (but not free flowing), and this rad is now working reasonably well.
However, only a very small amount of air came out of the others and then no more, nor any water - nothing happens at all now when I open the bleed valve, no air or water. If anything the radiators are now even cooler after my first attempt to bleed them, but not sure if thats coincedental given the onset of Winter - thats what I'm telling my wife who thinks my basic DIY effort to sort the problem has made it worse..!
All the upstair rads have TRVs and I have checked the pin - all move OK.
The flow pipes coming up out of the floor to each are lukewarm at best, whilst the return pipes on each are red hot.
In addition, after leaving the CH on for a while, these upstairs rads will eventually get lukewarm - but typically one side is hotter (eg that closer to the wall) and similarly one half is also a little hotter (that on the same side as the return pipe).
Any thoughts from the experts would be very much appreciated - as we have a houseful of guests coming shortly for christmas and I dont want to freeze them...!!
Many thanks in advance.