Methodology
Evidence and price labels
A useful cost figure needs a source, date, unit, and scope. Articles distinguish a provider’s displayed offer, a secondary publisher’s estimate, historical evidence, and a hypothetical arithmetic example. A broad cost-guide range is the publisher’s estimate; this site does not present it as a representative local survey or independently verified transaction dataset.
An access date records when a source was checked. A source’s publication or update date may differ from the period when its underlying prices were collected. Where that period is missing, it should remain unknown. Old estimates are not silently relabeled with the current year or automatically adjusted for inflation.
Product listings establish the displayed equipment price and described selection. They do not establish installation labor, required modifications, tax, delivery, availability, or a complete household budget unless those terms are explicitly included. A historical platform benchmark describes that platform and period, not every buyer.
Explanations, examples, and AI assistance
The site uses AI assistance for research support, drafting, and revisions. The publisher is responsible for publication choices, evidence standards, and corrections. AI assistance and a published page do not imply that a human specialist reviewed every article or verified every claim. Drafts require editorial evaluation before publication.
Hypothetical calculations are labeled and use stated assumptions. They explain arithmetic rather than document a customer transaction. The September 7, 2026 legacy revision removed first-person scenes and purported interviews that lacked evidence of real reporting; a disclaimer alone was insufficient to make those scenes reliable.
A real invoice or interview should be described as such only when provenance, date, location, scope, permission where needed, and appropriate redactions have been checked. The current site does not claim a representative collection of independently verified customer receipts.
Sources must support the adjacent claim
Source checks examine what a page actually says, not just whether its URL responds. Technical, safety, legal, and incentive statements should use relevant official guidance or other primary documentation. A government explanation of a product or procedure does not establish what a contractor charges to install it.
Secondary price guides can provide attributed context, but their sampling, geography, assumptions, and data vintage may be incomplete. Those limits remain visible. If a price cannot be supported, replace it with a narrower supported observation or useful scope guidance; do not leave a precise unsourced estimate standing behind a general disclaimer.
Unavailable references and unsupported adjacent claims were removed or replaced in the legacy revision. A replacement source must support the revised claim itself. Some sources remain historical or undated; they are identified that way rather than presented as fresh offers. Reading one part of a source does not endorse every statement elsewhere on its page.
Compare complete quotes
Use the same job description and request the location, date, quantities, materials or models, labor, permits, taxes, disposal, exclusions, and warranty. Track optional work and owner purchases separately, and avoid adding equipment twice when an installed price includes it. The FTC home-improvement guidance recommends written estimates and a clear contract.
Legal examples identify their jurisdiction. Technical descriptions do not replace an on-site assessment or manufacturer instructions. Incentives need current program terms and project-specific eligibility checks before they are deducted from a budget.
Corrections and revision dates
The original publication date stays separate from the date of a substantive revision. An updated date records changed content; it is not a guarantee that all prices were newly collected or remain available. The legacy articles include a correction note describing the evidence repair.
Send a correction with the article URL, the disputed statement, and an accessible source or appropriately redacted document. Further local price evidence and specialist review can improve coverage. Neither this methodology nor the legacy repair should be described as a blanket independent fact-check of the entire site or of new drafts.