@www{boilerguide2022central,
title = {Central Heating System: Everything You Need to Know},
author = {Hannah Maza},
url = {https://www.boilerguide.co.uk/articles/central-heating-systems},
urldate = {2023-01-04},
year={2022},
month={10},
annote={Quote: "86\% of houses in the UK have a wet central heating system that uses gas fuel," and "It's a fair assumption that you probably have a wet central heating system as 89\% of homes in England have it," and Warm air systems, also known as dry systems, can still be found in some older homes. They peaked in the 1960s-70s, but have since been replaced by wet systems."},
}