Editorial policy

How we choose products

Every list starts with a specific need. We compare the specifications that matter for that need — for example room size, airflow and noise — using manufacturer data and independent laboratory results where they exist, and we explain any assumption behind a figure.

Independence

Retailers and brands do not pay to be included or to rank higher. Affiliate commissions never change the order of a list.

Sources and corrections

Each page lists its sources and the date they were checked. If you find an error, tell us through the contact page and we will review it.

Use of automation

We use software tools to research, draft and check pages. Every page is reviewed against our editorial rules before publication.