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The Pocket Field Reference for Air Compressor & HVAC Technicians
Symptom diagnostics, CFM sizing, electrical calculators, and fault codes. Built by a field tech for field calls — 100% free, no ads, works offline.
- Built for the Trade
- Instant Calculations
- Works Offline
Free tools — no sign-in
Tools
Sir Pumps-A-Lot
AI compressor sidekick
Diagnose
Symptom → cause → fix
Calculators
Belt, motor, CFM, leaks
Reference
Compressor types & PM
Glossary
Terms for apprentices
Service Guides
Rebuilds & PM procedures
Electrical
Wye-delta, contactors
Equipment
Controllers, motors, oils, PM & more
Controllers
Fault codes, passwords, manuals
Motors
Nameplate specs & wiring diagrams
My Library
Your uploaded PDFs
Manuals
Manufacturer links
Nearby Pros
Local compressor companies
HVAC
AC, heat pump, companies
Air Treatment
Dryers, filters, drains
Field Logs
Save readings, share reports
Video Library
Troubleshooting & how-to
Blog
Field guides & how-tos
Diagnostic Quiz
3 modes · streaks · leaderboard