Tokyo AC

A Windows system for an air-conditioning company with over 30 years in the market, covering customers, contracts, technicians, and invoicing.

• Client: Tokyo International Company
• Industry: HVAC services
• Built with: Windows, Offline-first, Invoicing

The challenge

Tokyo International Company has served air-conditioning customers for over 30 years. Customer records, contracts, and technician visits lived in paper files and spreadsheets that were hard to search and easy to lose.

What we built

We built a Windows desktop system that keeps every customer, unit, contract, job card, and invoice in one place. It runs on the office's existing computers and keeps working without internet.

Before

• Customer history scattered across paper and sheets
• Hard to know which units were under contract
• Invoices prepared manually after each visit

After

• One record per customer and every unit they own
• Job cards assigned and tracked per technician
• Invoices generated directly from completed work

Key features

Customers and units

Every unit, its location, and its contract status on the customer's file.

Technician job cards

Visits are scheduled, assigned, and closed with the work recorded.

Works offline

A local database means the office keeps working even when the internet drops.