Lot 20 is legislation created enforced by the European Union that helps separate the efficient and inefficient heaters on the market. In the long term, this should help homes in the UK to heat up their houses and general work spaces for less since it will consume less energy saving you on your bills.
Understanding these regulations is crucial when considering heating solutions like infrared heaters. This will also help the UK Government reach their plans on reducing at least 68% of emissions and green house gasses by the year 2030. You can find out more about the UK Governments future plans on this here.