Tools
Well System Tools & Calculators
Each tool shows the rule it uses and where that rule comes from. None of them replaces an onsite diagnosis — they help you understand what you're seeing and what to ask.
- Well pump symptom troubleshooterAnswer a few questions about what you see and hear; get the likely causes, the safe checks and the right guide.
- Pressure tank precharge calculatorThe right air pressure for your tank from your switch setting or constant-pressure setpoint — and what your reading means.
- Pressure tank size calculatorMinimum tank volume from pump flow, run time and switch setting, plus a check of your current tank.
- Replacement cost estimatorPublished installed-cost ranges by pump type, the parts often replaced with it, and what pushes the price up.
- Running-cost calculatorMonthly electricity to run your pump, from its size, your water use and your rate.
- Repair-or-replace checklistThe pump's age, the failed part and your quotes, turned into the questions to ask.
Built into the guides
- A settings comparison for your house in 30/50 vs. 40/60.
- Step-by-step decision trees in short cycling, low water pressure and pump keeps running.
How we build tools
Every calculation comes from a published method — manufacturer manuals, trade publications or basic physics — and the tool page says which one. When there's no reliable method (for example, a per-foot price for deep wells), we don't make one up. Read more in our sources and methodology.
These tools are for educational guidance and do not replace an onsite diagnosis.