Radiators taking a while to heat up

[slacky]

Hey guys

Had 5 out of 6 radiators in the house changed a couple of weeks ago. The one in the living room and kitchen are the last 2 on the line, when they was first changed it only took them around 15 mins to get quite warm now I'm looking at around 30 mins or more which is the same as before I got them changed. What's changed?

 

[Best]

Weather has got colder & the other first rads will therefore steal more heat out of the circuit.
Perhaps the system needs balanced properly?
Sometimes circulating pumps start to fail a bit, even if spotlessly clean inside.
Or you have a slight blockage somewhere.
Poor circulation is the correct term really.

 

[slacky]

Is there any signs for the system to need balancing? How would I be able to tel if there is a small blockage somewhere?

 

[Murdoch]

Deleted!

 

[slacky]

Bleed the rads one by one and abit of air has come out, the rads downstairs are getting hotter quicker but still taking a while to get to full heat. Think I'm going balance the rads but would some one recommend a decent multimeter with a temperature function which doesn't cost a bomb? Thanks

 

[wildcard]

Bleed the rads one by one and abit of air has come out, the rads downstairs are getting hotter quicker but still taking a while to get to full heat. Think I'm going balance the rads but would some one recommend a decent multimeter with a temperature function which doesn't cost a bomb? Thanks

Why do you need a m/meter with a temp function?

 

[slacky]

To balance the rads unless I can use some thing else?