What Heat Outputs Do LST Radiators Give?

What Heat Outputs Do LST Radiators Give?

Posted by Robin Mansell on 16 April 2020 17:47:55 BST
Robin Mansell
Find me on:

What Heat Outputs Do LST Radiators Give_

The heat output of LST radiators compared to standard ones is a primary concern for many professionals involved in the specification of radiators within a care-centred environment. 

A concern for many customers is that an LST radiator has a lower heat output than a standard radiator, meaning that they will need either a bigger radiator-or more radiators-to make up for the reduction in heat. 

However, this isn’t the case. For the specifier, there are a number of options available that ensures the heat given out by LST radiators matches the requirement of a space. 

The blog post was updated in April 2020 to reflect policy changes and image updates. 

What Heat Do LST Radiators Give Out?


 In Contour’s LST Radiator range, there are three standard types of radiator to choose from. These are:

  • A Type 11
  • Type 12 (sometimes referred to as Type 21)
  • The Type 22

Our Type 11 radiators are made of a single panel and a single convector. Type 12 radiators have a double panel, but a single convector and while the type 22 radiators have a double panel and double convector.

In our Covora LST radiator range, there are 140 different options for you to choose from.

In our DeepClean LST radiator range, there are up to 300 options. These range from 450mm x 600mm, which would give you 191 watts of heat output, up to 750mm x 2200 giving 3393 watts.

New call-to-action

Factors Affecting Heat Output

A number of factors affect heat output. These include:

  • The length of the radiator
  • The height of the radiator
  • The depth of the radiator
  • Whether the radiator is wall mounted or floor mounted

The overall output of the radiator depends on the type and size of LST radiator that you have installed. Additionally, the depth of the radiator is the biggest factor affecting output as the greater the depth of the LST, the better the overall heat output.

Bespoke Options

LST Radiators for Hospitals and healthcare sector | Contour Heating | Shifnal, West Midlands

Depending on the space that we will be installing into, if required, we do offer bespoke options for sizing and outputs.

For example; we also offer a Type 33 radiator. This is the same as the type 22, with the double panels and convectors, however; it also includes an additional panel and an additional convector.

For heat outputs, this has a dramatic effect.

When you compare a 1200mm x 400mm type 22 LST radiator to a Type 33 bespoke LST radiator of the same measurements, the heat output increases by 26%.

The only size difference between the two is that the Type 33 is has a greater depth because of the additional panel and convector which, in turn, improves the heat output.



There are a number of factors affecting the overall heat output of an LST radiator including height, length and depth.

Depending on the type of radiator that you choose to install, you can expect heat outputs to suit the space.

Smaller radiators of 450mm x 600mm with a single panel and single convector would give ample output for a small bathroom, such as en-suite but larger LST radiators with greater outputs would naturally work better in larger spaces.

If you would like to find out more about installing LST radiators into your facilities fill out the form below to speak to a heating expert about how Contour can help you:

New call-to-action

About Us

Contour produces a range of innovative, safe surface temperature systems for healthcare, education, mental health, commercial and secure sectors, working in close partnership and collaborating with architects, M&E engineers, NHS Trusts, local authorities, design consultants and contractors to deliver outstanding safe heating solutions.

Contour is the exclusive partner of BioCote® anti-microbial technology for LST and anti-ligature radiators.  BioCote® additives reduce bacteria by up to 99.9%. Contour combine an extensive range of colour-paints is  with BioCote® for a durable, high-quality finish.

Contour’s heating solutions offer secure, single-person quick access to radiator guard interiors for regular deep cleaning and maintenance.  Each year, Contour save the NHS millions of pounds in cleaning costs, therefore delivering cleaner, safer environments.  Contour is redefining the marketplace and therefore many regard us as a design and innovation leader within the industry.

Contour have a quality- first philosophy. Our customer-focused team possess a ‘can-do’ attitude, they take pride in developing solutions for your heating requirements.

Contact us at:

The Mansions, 43 Broadway Shifnal

Shropshire TF11 8BB United Kingdom

+44 1952 290 498


Twitter: @Contour_Heating

LinkedIn: Contour Heating Products Ltd

Topics: LST Radiator Guards, LST Radiators, news, Radiator Covers, Safety, Low Surface Temperature radiator guards, LST