How Many LST Radiators Do I Need?

How Many LST Radiators Do I Need?

Posted by Robin Mansell on 30 July 2020 15:26:40 BST
Robin Mansell
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How Many LST Radiators Do I Need?

Getting the right number of LST radiators to meet the temperature requirements can vary, based on the size of the environment that you have available.

Here at Contour, we’ve been blogging about how you can ensure that you get the right number of LST radiators for your space.

Read on to find out more…

Understand Your Heat Output Requirements

How Many LST Radiators Do I Need?

There are several factors at play that could affect the number of LST radiators that you need for your space. These include:

The nature of the space will affect the level of heat output that you need.

Large spaces that are used by a lot of people will have heating requirements radically different from a kitchen, for example.

Kitchens are often hot, busy environments with heat being generated by sizeable ovens and cooking equipment. Such as, kitchens based in hospitals, schools, or care homes.

A school hall, however, may need a greater number of LST radiators to account for larger space. The heat output of these will depend on how the space is being used.

When the whole school is gathered for an assembly, for instance, you may not need to strive for higher temperatures due to the number of people in the room and for the fact that there will be a lot of body heat.

If small groups, such as a single class are working, you may need to utilise a greater heat output from your LST Radiators.

To understand what heat output you need for your space, use a heat loss calculator. The calculator will consider:

  • The size of the room (height, width, and length)
  • The type of room
  • The number, size, and type of windows
  • The number of exterior walls
  • If the radiator will fit under windows

From this, you will then understand what heat is being lost from the room. This is normally measured in Watts and BTUs, the number given will tell you what heat you need to put back into the room to heat it sufficiently.

Depending on the wall space available and how big the heat loss is, you may need more than one LST Radiator to meet the heat loss needed.

Bespoke Heating From Contour

How Many LST Radiators Do I Need?

Our standard LST radiators that you can choose from are the Type 11 - consisting of one panel and one convector. A Type 12, which has a double panel with only one convector or a Type 22 which has a double convector and a double panel.

Although, if you require a stronger heat output, we offer a Type 33 on a bespoke basis.

Type 33 is the same as a Type 22, except it has an additional convector and an additional panel - offering a much higher heat output.

Depending on the type that you choose and the required heat output, Contour can supply the right number of LST radiators to match your requirements. With the size and specifications that fit your space.


Different spaces will require different numbers of LST radiators reliant on the heat output needed to make sure that the room is the right temperature.

Using a heat loss calculator, you can understand what heat output you require and how many LST radiators you will expect to achieve that.

Here at Contour Heating, we can provide bespoke heating solutions to suit your needs of any space, size, and heat output requirements.

Would you like to find out more?

 Fill out the form below to speak to a heating expert today.

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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


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