Cookies & Privacy Choices

The core calculators do not require an account. Some calculator settings are stored locally in your browser so you can resume a plan.

Local Storage used by the tools

The AC size calculator may remember its latest settings. The multi-room planner may remember room names and planning inputs. This storage stays in your browser and can be cleared through your browser settings or the tool's reset function.

Google AdSense

This site uses Google AdSense. Google may use cookies, local storage or similar identifiers to deliver, measure and protect advertising. Where consent is legally required, advertising choices are handled through a Google-certified consent management platform (CMP).

Changing your choices

If a consent message is shown to you, use its privacy controls to review, change or withdraw advertising choices. Calculator functionality does not depend on agreeing to personalised advertising.

See the Privacy Policy for more detail.