According to the results of a study by the Clean Air Day campaign, air pollution in UK homes is more than three times worse than outdoor air pollution. The reason for this is the number of particles that form air pollution get trapped inside a home.
The study by the Clean Air Day campaign looked at the level of ultra-fine air pollution over a 24-hour period. It is thought that this pollution was a result of indoor activities such as cooking, or burning wood on inefficient wood burning stoves and open fires, along side outdoor pollution from transport, which ends up moving inside a home.
Ultrafine Particles vs PM2.5 and PM10
Ultrafine particles (UFP’s), mentioned in this article are seen to be potentially more dangerous than PM2.5 and PM10 due to their size. They are much smaller than both, which means they can more easily pass in to major organs of the body. Particles that are less than 100 nm (nano metre) in diameter are commonly defined as ultrafine.
Ultrafine particles have the potential to have greater health impacts than PM10 or PM2.5, because they can be more easily absorbed into the body. Their tiny size means they behave together like a gas, are able to pass through the lungs into the circulation and get taken up into cells, where they cause potentially serious issues.
The Clean Air Strategy, published earlier this year raised awareness of how things like open fires can contribute to indoor pollution. Furthermore, the Clean Air Strategy highlights how only the cleanest stoves (Ecodesign Ready), which will come into force in 2022 will help tackle this problem. There is no place for open fires in a clean, environmentally friendly home.
Burning Wood Indoors:
Open fires are responsible for a lot of internal air pollution. With a high efficiency wood burning stove, air is drawn from a room into a fire, to help with a clean, efficient burn. Unlike an open fire, the burning of the wood is not exposed to the internal atmosphere in a home. The combustion takes place in a sealed, glass fronted firebox, and vented into the external atmosphere. The only time the efficiently burnt wood would be exposed to the indoor atmosphere, would be momentarily when opening the door to add more fire wood.
Televisions with 100+ channels, games consoles, the Internet and generally more home-based activities, means people are spending longer in the home than ever before, this is especially true for children, who are spending longer inside and less time outside playing. In a recent study, children spend just 7 hours a week outside and over twice that inside playing video games.
How to Reduce In-Door Air Pollution: