How we check our cost guides

HomeCost Radar publishes these guides. Each guide identifies its data vintage, calculation method and content check date. Our editorial checks cover consistency and arithmetic; they are not professional engineering certification or a claim that we tested every appliance.

Observed data and modeled examples

Electricity rates come from attributed EIA publications. Wattages, operating schedules, charging efficiency and duty cycles in examples are assumptions unless we explicitly identify a measurement. We label historical household averages separately from current rates and hypothetical bills.

Calculation and publication checks

Cost examples use the versioned calculation engine. We check units, source dates, plausible bounds, links and rendering before publication. Source refreshes pass validation before release. A content review date changes when the guide is checked or revised; a rate date follows the source publication.

Use of automation

Software generates the tables from the published data and inputs. AI tools may assist with drafting, research and code changes. Their output is not a source for electricity prices or measured appliance performance. Linked source data and reproducible assumptions take precedence over generated prose.

Corrections

If a figure or statement looks wrong, send a correction with the page, the disputed claim and a source where available. We check the underlying inputs and update the guide and its review date when a correction is needed.

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