Over the past months we quietly built what might be the largest free toolkit in the trade — and then made the two pieces of actual software every tech kept asking for. All of it works in your phone browser, none of it asks who you are.
⚡ The two apps
- Truck Inventory Manager — van stock templates from a real truck, one-tap usage tracking, low-stock alerts, one-button restocking.
- Job Quote Builder — two-minute quotes with your company header, real part costs, markup presets, and a printable customer copy.
🔨 The daily-driver calculators
- Superheat & subcooling — target superheat from wet-bulb/dry-bulb, TXV subcooling, weigh-in
- Capacitor test — the ±6% verdict in one entry
- Static pressure, PT charts, wire sizing, gas pipe sizing, CFM, amp draw…
🔧 Troubleshooters
Guided decision trees for compressors, flame sensors, gas valves, and general symptoms — the "is it dead or is it me" conversations, structured.
🏠 For your customers
Sizing, repair-vs-replace, SEER2 savings, cost estimators — send a homeowner a link instead of arguing with a guess.
🇲🇺 En Español
61 tools mirrored in Spanish, because job sites are bilingual and math shouldn't need translation.
Why free, forever
We're a parts store. The tools make your day shorter; when restocking through us is the easiest path, everybody wins. That's the entire arrangement — no premium tier coming, no email harvest.
🛠 Open the Full Toolkit →
137 tools · Free. No login. No email wall.