Privacy & cookies
Last updated 8 November 2026. Calculator inputs stay in your browser and are not submitted to our database.
Essential storage
We store your cookie choice in your browser under ww-consent-v1. It remembers your preference until you clear it or change it using Cookie settings. The calculators require no account.
Custom products you add to a comparison are saved locally under ukhc-custom-comparisons-v1, including the product names, energy figures and units you enter. They stay in this browser until you remove them using the comparison controls or clear site storage. They are not uploaded to the public catalogue. The household planner saves appliance names, energy figures, usage schedules and the entered tariff to a JSON file when you choose Save plan to file. Loading reads and validates a file you select locally; the file is not uploaded. Manage or delete downloaded files using your device. The planner no longer saves plans to browser storage. Copies saved by earlier versions under hcw-household-v1 may remain until you clear site storage. Other calculator inputs remain in the current tab.
Optional analytics
Google Analytics loads only after you accept analytics, and only when the operator has configured a property. It can process device, page and interaction data under Google’s terms, including international processing. Reject analytics to use the tools without it. Use Cookie settings to withdraw consent; the page reloads and removes accessible analytics cookies.
Site search and enquiries
Search runs in your browser. Terms also appear in the page URL and may be received by the hosting provider when that URL is requested. They may appear in provider logs and, if you consent to analytics, page reports. Avoid entering personal or account information. If you email us, your email provider and ours process the message; retain only the information needed to resolve the enquiry.
Affiliate clicks and service logs
When you use a marked offer link, we store its product ID and timestamp to count requests. We do not store your IP or user agent in that click table. The retailer or affiliate network may process its own tracking information under its privacy notice. Hosting providers may process IP addresses, request URLs and technical information to deliver and protect the service. Click records are deleted after 90 days by the worker.
Hosting and retention
Hosting provider: Microsoft Azure: Static Web Apps (West Europe), Container Apps and private storage (UK South). Microsoft 365 correspondence is supplied through GoDaddy.. Provider log retention: The configured Container Apps Log Analytics workspace retains logs for 30 days. Other provider-generated connection, security and service records follow Microsoft's published purpose-based retention criteria and applicable contractual requirements..
Worker run history and affiliate click records are retained for up to 90 days and removed by the scheduled worker. The cloud service keeps 14 days of verified catalogue and operational-table snapshots in private storage, separately from API replicas. Off-site backup retention: 30 days for verified independent PC copies; available while the owner PC is running and Azure sign-in is valid. Browser storage can be removed through the comparison controls, cookie settings or your browser settings.
Why information is used
Service requests and operational records support delivery, security and maintenance of the tools. Optional analytics relies on your consent, which can be withdrawn. Service and correspondence lawful basis: Legitimate interests in delivering and securing this service, maintaining necessary operational records and responding to requested enquiries. Optional analytics relies on consent.. Enquiry retention: Ordinary enquiry correspondence: up to 12 months after the last meaningful contact, with separate documented handling for contracts, disputes or legal obligations..
Advertising
AdSense is disabled in this MVP. Advertising must only be enabled after approval, privacy notice updates and integration of a Google-certified consent platform. Our analytics choice banner is not an advertising consent platform.
Contact and your rights
Contact contact@aicowan.co.uk for access, deletion, correction or privacy enquiries. You can raise concerns with the UK Information Commissioner’s Office at ico.org.uk.