Radiator siding.

[CotswoldDoItUpper]

Is it possible to work out the output of a radiator at a certain delta? I’m not sure our plumber has sized our new rads correctly despite insisting that they’re ok. 
 

They’re column rads, and we’re looking for a delta of 50 not 65 which is what I think he is using. 
 

Thanks!

[JohnMo]

Have a look on the manufacturer website, they now list various delta T, if not give them a call or the UK agent.

[CotswoldDoItUpper]

9 hours ago, JohnMo said:

Have a look on the manufacturer website, they now list various delta T, if not give them a call or the UK agent.

I don’t know the manufacturer, the plumber dropped them off 2 days ago. 

[CotswoldDoItUpper]

9 hours ago, JohnMo said:

Have a look on the manufacturer website, they now list various delta T, if not give them a call or the UK agent.

I don’t know the manufacturer, the plumber dropped them off 2 days ago. 

 

this is all I have… 

[Roundtuit]

These maybe?

https://www.radiatoroutlet.co.uk/600-x-608mm-white-horizontal-traditional-2-column-radiator

[JohnMo]

Did a simple Google search for the number of columns and overall size found this, different colour, but same size and number columns, which gives a T50 rating.

 

Will be pretty similar if not the same rating

 

https://www.homesupply.co.uk/Eastbrook-Rivassa-600-x-608-Matt-Anthracite-2-Column-Horizontal-Radiator

[CotswoldDoItUpper]

Thanks @Roundtuit and @JohnMo. 
 

thus is for a room that needs around 4900BTU. The plumber has specified 2 of them knowing we’ll be running out heating at 50deg and knowing we want to upgrade to a heat pump in the future.  
 

radiator outlet says 2700BTU per rad but with no delta, home supply suggests 2200BTU at a delta of 50.

 

should I get the plumber to change them for something bigger?

[JohnMo]

The 3 column one is 2853 BTU.

 

https://www.homesupply.co.uk/Eastbrook-Rivassa-600-x-608-Gloss-White-3-Column-Horizontal-Radiator?gclid=Cj0KCQiAip-PBhDVARIsAPP2xc182-ebOJ-_LCV6gYPnx90wMzdnD3iF7siji72roHjODDIc6FgneJ8aAjcBEALw_wcB

 

That would be better suited.  If you are going ASHP, the bigger the better really, even go the next size up if you have room