Last updated 5 September 2026
Privacy
We collect only what is needed to deliver the checklist, sell the guide and understand whether the site works.
When you request the free checklist, the email provider receives your email address so it can deliver the file and practical heating-cost emails. Every marketing email includes an unsubscribe link. We do not sell your address.
Purchases
The checkout provider receives the payment and contact details needed to process your order, calculate applicable tax, issue a receipt and deliver files. We do not receive or store your complete card number.
Analytics
If enabled, Plausible Analytics counts visits and the funnel events named in this site’s README. It is configured without advertising trackers. The site stores incoming UTM campaign labels in your browser session so the checkout can receive the same attribution.
Spam protection
The opt-in form contains an invisible honeypot field. It is used only to reject automated spam submissions.
Your choices
You can unsubscribe through any email, or contact the publisher to request access, correction or deletion where applicable. Before launch, add the data-controller contact required in your jurisdiction.
External services
The email and checkout providers process data under their own privacy terms. Review those providers before launch and link their policies if your local law requires it.