How we research our guides
This page describes how a RepairClue guide goes from a question to a published page.
Choosing a topic
Topics come from the problems homeowners search for most often and from reader emails. A topic becomes a guide only if it has a clear question, distinct causes that can be told apart, and a fix that a careful homeowner can attempt or at least understand before calling someone.
Building the diagnosis
The first research step is listing every common cause of the symptom and the observation that separates them. A running toilet, for example, can be caused by a leaking flapper, a water level set too high or a failing fill valve, and a simple dye test plus a look at the overflow tube tells them apart. The diagnosis questions at the top of each guide are written from that list.
Checking the steps
Repair steps are checked against manufacturer installation and service instructions where they exist, and against guidance from public agencies such as the EPA WaterSense program, the U.S. Department of Energy and the Consumer Product Safety Commission. Where a step depends on the model, the guide tells you what to look for in your own manual.
Estimating time and cost
Time estimates assume a first-time DIYer working carefully with the listed tools. Part costs are typical US retail ranges for common replacement parts. Professional costs are given as broad ranges because they vary by region, by access and by whether a trip charge applies.
Deciding where DIY ends
Every guide includes a “when to call a pro” section. The line is drawn at work that carries a risk of fire, gas leaks, electrocution, flooding, structural damage or a code violation, and at repairs that need specialized tools or licenses, such as refrigerant handling.
Keeping guides current
Guides are reviewed when readers report a problem, when manufacturers change common parts, and on a regular schedule. The date at the top of each guide shows the last meaningful update. Read the editorial policy for how corrections work.