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. If it now says something different, the figure is either updated or kept as a clearly labelled historical figure with the dated copy it came from, and the change is noted in the methodology page’s update log. If the page has moved or gone, the figure is re-sourced, cited through a dated archived copy with a label, or removed.

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.