Bleeding radiators

[Mike C]

How often would you normally need to bleed radiators? I moved into a property recently and noticed straightaway that a couple of radiators needing bleeding. I bled them and they seemed fine after but only a couple of weeks later I had to do the same two again, all the others are fine. Is this normal or sign of other problems?

Cheers

 

[bewsh]

You'll find that one or two radiators will collect all the air.

But, over 2 weeks, that seems a bit excessive. You could have a leak on a radiator, you could also have a blockage in some pipework stopping the air going up the vent pipe or it could be caused by corrosion in the heating system

 

[bewsh]

Actually, what system is it? What boiler do you have?

 

[Mike C]

Actually, what system is it? What boiler do you have?

The boliet is an Evo, about 10 years old I think. There is a tank in cupbooard on landing and one in loft. 7 radiators.

 

[PhoenixServices]

Do you have a big and small tank in the loft or just one?

 

[Mike C]

Big and small tank in loft

 

[ManchesterGas]

Try and light the air coming out of the rads when you bleed them

 

[Mike C]

Try and light the air coming out of the rads when you bleed them

Are you taking the :nono:

 

[Grant Hicks]

Any rust spots on the rads?

 

[PlumbBobBob]

no he's not taking the proverbial it is to check for hydrogen which is a sign of corrosion in the system

 

[JWLPlumbing]

I had same question from a customer other day, but it seems just air - it was only only happening every 4 - 6 weeks

 

[Mike C]

no he's not taking the proverbial it is to check for hydrogen which is a sign of corrosion in the system

OK, fair enough. No signs of rust on the radiators, most of them look fairly new.

 

[ManchesterGas]

The corrosion will be inside the system. You won't see the rust, hence the question. Hydrogen is a by product of the reaction taking place inside your system. What boiler is fitted?

 

[Mike C]

The corrosion will be inside the system. You won't see the rust, hence the question. Hydrogen is a by product of the reaction taking place inside your system. What boiler is fitted?

Evo see above

 

[Mike C]

The corrosion will be inside the system. You won't see the rust, hence the question. Hydrogen is a by product of the reaction taking place inside your system. What boiler is fitted?

I was asked above if I could see any rust

 

[ManchesterGas]

As said, light it. if there is no flame then it's air ingress and may require a decent plumber to sort.

If it lights then it's the system water quality and a chemical reactions taking place, possibly due to the various metals in the system. Start saving for a new boiler because the evo is very similar to the icos, and they are not thought of very well in this world because of all the problems. Make sure that you get something with a stainless steel heat exchanger too.

 

[Mike C]

As said, light it. if there is no flame then it's air ingress and may require a decent plumber to sort.

If it lights then it's the system water quality and a chemical reactions taking place, possibly due to the various metals in the system. Start saving for a new boiler because the evo is very similar to the icos, and they are not thought of very well in this world because of all the problems. Make sure that you get something with a stainless steel heat exchanger too.

God you lot are so pessimistic. In a previous property I had a very old boiler and every one who came to service it used to shake there heads, blow out some air and tell me I had better start saving for a new one and this won't last much longer etc. Still going strong.

 

[Subby]

Better start saving for a new boiler by the looks.

 

[Dotty]

God you lot are so pessimistic. In a previous property I had a very old boiler and every one who came to service it used to shake there heads, blow out some air and tell me I had better start saving for a new one and this won't last much longer etc. Still going strong.

not pessimistic. Realistic.

 

[mountainman]

This topic seems to me a classic case of critising free professional advice when the said advice isn't welcome.

 

[Subby]

This topic seems to me a classic case of critising free professional advice when the said advice isn't welcome.

Exactly what I was thinking, don't look a gift horse in the mouth