Stelrad Launches New Additions to the Compact Radiator Range

As a continuing part of its programme of providing radiators that operate well with renewable heating systems – powered by air source and ground source heat pumps – Stelrad has announced that it will be launching a range of 200mm and 1200mm high radiators in a variety of sizes in quarter two of 2025.

The introduction of these additional size radiators is to ensure installers and specifiers have radiators that are ‘fit for the future’ and to help them to select correctly sized radiators for each and every job they are working on, to ensure comfort heating around every home on which they are working.

The new radiator sizes offer a helpful additional range to slot into specifications and installations up and down the country. The new 200mm sized radiators are available in K3 and K4 sizes – that’s with three or four sets of fins and three or four panels – in fourteen different sizes and are floor mounted only, supplied with feet. Available in white, have a ten-year warranty and are ideal for installations where space is limited.

The 1200mm sized radiators come in K2 format and in five different sizes. They are wall mounted only and come with a centre tap fitting. Again, only available in white and also come with a ten-year warranty.

“We’re bringing these new sizes to market to plug some of the gaps in our already comprehensive range of Compact radiators and to ensure installers and specifiers have access to the radiators they need. These new sizes are part of the Stelrad Contract range only. The 200mm range are available in outputs from 746W to 1,866W and the larger 1,200mm range come in outputs from 867W to 2,022W. As always, we have listened to our customers and the new sizes are a direct response to the requests we have received.”

- says Stelrad’s Head of Marketing Chris Harvey.

The launch of these new sized radiators comes hot on the heels of the news from the Salford University Energy Homes project where independent research has proved that new homes heated by radiators have lower running costs than those heated by a combination of underfloor heating (UFH) and radiators in the same building. This where a modern renewable heating system is the source of heat for heating and hot water in the home.

Application of heat pumps in new builds can lead to the default adoption of UFH downstairs with radiators upstairs. However, this latest evidence suggests that the use of radiators throughout a new property offers significant benefits where heat is provided by an air source heat pump rather than a traditional boiler.

Interestingly, systems with radiators throughout – on each floor - showed lower running costs than the systems with a combination of UFH and radiators. This was not focused on in the report but can be unambiguously calculated from data published within it.

Using the external air source heat pump (ASHP) with radiators throughout, the running cost was 11% less than with UFH. Using the loft ASHP with radiators throughout, the running cost was 13% less than with UFH. These outcomes are very revealing and highlight the running cost benefits of selecting radiators throughout a new home powered by an air source heat pump of any design.

Radiators throughout a home were shown to be consistently more cost effective than UFH and radiators combined when looking at the most realistic scenario i.e. a SAP intermittent heating pattern, at average winter temperatures. Out of all 28 tests carried out and researched, the most economic configuration was the external ASHP with radiators throughout running the SAP pattern in a 5 degrees C environment.

Head for www.stelrad.com/trade for all the advice you need on the right radiators for your installation and heating system designs.