Some radiators not really getting hot

[AMW]

Problem seems to be that the upstairs and downstairs hallway radiators get really hot quick while the others seem to stay either lukewarm or barely warm at all.
Bled all the radiators but I’m suspecting a balancing issue. House is 2008 built so not old.
I don’t appear to have regular lock shields to do balancing however, I’ve got ones that are as my picture on all the radiators:

All these seem to be completely open on all the radiators, is this correct?!
I’ve got Drayton Smart TRV’s on most the radiators and the pins seem to be moving freely enough.

Appreciate any help
Andy

 

[CBW]

What valves did you replace with the Drayton’s? Is this a new issue as in it worked ok before? If all those are fully open I’d suspect it to be balancing too.

 

[AMW]

Was a mix of Siemens ones and Terrier. To be fair no I don’t think it was really working that well before either but I’ve only moved in fairly recently.

 

[terryplumb]

Crank down the lockshield on both hallway rads until they are barely open ,but still heat up. See what the resulting effect is it on the other rads.

 

[AMW]

I will try that tomorrow, cheers. Have either of you got a proper guide for balancing, I've seen different methods given online....

 

[CBW]

A guide to balancing central heating radiators

How to balance central heating radiators to achieve the most effectient system.

www.diydata.com

 

[AMW]

Great cheers Chris

 

[Ltnman]

Look on youtube. There are many videos on the subject

 

[Madrab]

A guide to balancing central heating radiators

How to balance central heating radiators to achieve the most effectient system.

www.diydata.com

Oi you .... keep it in house

Plumbing:faq2

www.diynot.com

 

[CBW]

Oi you .... keep it in house

Plumbing:faq2

www.diynot.com

Thanks, I did try to, but couldn’t find your link, was using my phone, there was an faq 5 in heating and it links to that site

 

[Madrab]

Thanks, I did try to, but couldn’t find your link, was using my phone, there was an faq 5 in heating and it links to that site

Yeah, TBF it probably should be under radiators but it isn't, it's under FAQ's