Get in touch

Write to hello [at] waterheatercostcalculator [dot] com. The address is written that way to slow down harvesters; type it normally.

Reporting a wrong number

This is the message most worth sending and the one that gets answered fastest. The methodology page lists every figure with an identifier, so quoting that identifier — or just the page and the number you are looking at — is enough to find it. If you know the source has changed, saying so saves a round trip.

What happens next: the cited page is re-checked, and if it now says something different, the figure is updated and the change noted with its date. If the page has moved or gone, the figure is either re-sourced or removed. A number whose source cannot be re-verified does not stay on the site because it was right once.

What cannot be answered here

Whether a specific quote is fair, whether a particular model is a good buy, or what your local code requires. Those need someone who can see your installation, and answering them from a distance would be guessing dressed up as advice. The tools here are built to make you a better-informed person in that conversation, not to replace it.

Press, data or licensing questions are welcome at the same address. So is a note pointing out that something is unclear — confusing writing is a defect in a site like this, not a matter of taste.