How do I get heat to a far away radiator

[ColdboilerHotboiler]

Hi,

I have a radiator here and it isn't getting any heat to it. Water runs out of both sides and it's been cleaned out. It works when all the other radiators are off so what I'm thinking is that the hot water isn't reaching the radiator due to the pump not having the strength to get it there (it's the furthest away).

I was wondering if anyone has any ideas to get around this.. I've seen some "boosters" but I'm not sure how good/reliable they are.

Thanks

 

[Aquarius]

Have you tried balancing the system?

 

[SimonG]

What boiler?
What pump?
What pump setting?

 

[SJB060685]

If it works with all other radiators turned off that suggests the head provided by the pump is enough to overcome the resistance of that circuit. It is more than likely a balancing issue.

 

[king of pipes]

How old is the the pump ? they can loose performance maybe a case of changing it a good flush out some new inhibitor and balancing the system. Kop