Need to know: Lot 20 revisited


After what feels like decades, not months, of buildup Lot 20 is finally here, and with it comes some definitive answers to questions that have been circulating throughout 2017. So how has the heating industry changed - and what do heating installers now need to do to make sure they comply with the new code?

Lot 20 

In a nutshell, Lot 20 is the new EcoDesign Directive legislation affecting the electric heating market. It came into force on the 1st January 2018, and sets a minimum efficiency standard for space heaters that are manufactured for sale in the EU. 

The legislation only applies to goods manufactured after January 2018. Heaters manufactured prior to this date can continue to be sold until stocks run out.

What products are affected?

All heating products that use electricity, gas or liquid fuels are covered by the new regulation. Here is the definitive list supplied by
  • Storage heaters
  • Direct acting heaters
  • Portable heaters
  • Radiant heaters
  • Electric fires
  • Gas fires 
  • Underfloor heating
  • Infra-red heaters
Local space heaters using a vapour compression cycle (heat pumps), or those that are specified for outdoor use only, are not impacted. Neither are towel rails, tubular heaters, frost protection heaters, air curtains, sauna stoves and slave heaters.

What is the minimum standard?

Minimum efficiency standards vary for different product categories. A full list of those categories and their efficiency standards are available on the Lot20 website, along with a handy efficiency calculator.
In the meantime, here is a brief overview of the standards for some of BEW’s most popular product ranges.
  • Underfloor Heating must have one of three energy saving features: distance control, such as an app that allows you to control heating from elsewhere; open window sensing, that can sense when a window is open and shut down automatically; or adaptive start control, which predicts optimal start-up times and temperatures. 
  • Storage Heaters must now have electronic heat charge control with room and/or outdoor temperature feedback (or be controlled by an energy supplier). They also need to feature electronic room temperature control, plus week timer, and fan assisted output. The control options listed above for underfloor heating are optional additions for storage heaters. 

How do I know that my product is compliant?

Lot20 essentially has more of an impact on manufacturers and suppliers like us than you, the installer. It governs the manufacture, not the installation, of heating products. Eventually, non-compliant products will be entirely phased out in the EU.
That said, if you do want to install compliant products from now on, a labelling requirement has been included in the regulation. 
Websites and instructions, for both installer and consumer, must contain certain information. For space heaters, the following information is required:
Heat output
Auxiliary electricity consumption
Temperature control type  - F2 compliance type
Additional features - F3 compliance type(s)
Portable heaters will also state “This product is only suitable for well-insulated spaces or occasional use.”
Your local BEW branch will be able to identify compliant products for you and help you decide what heating products are right for your job. To find out more about other energy saving products, drop in and speak to one of our trade counter teams.

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