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Questions, error reports and guide ideas go straight to the desk that owns the page.
Last updated Oct 2, 2026
What to send us
- Errors. A wrong number, date, link or source. Tell us what you saw and, if you can, the source that says otherwise. Use the “Tell us” link on the page and its address is filled in for you.
- Calculator questions. If a result looks wrong for your home, include the inputs you used.
- Ideas. A question our guides don’t answer yet, or a tool you would use.
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