HVAC Maintenance Quote Calculator Development

I'm in need of a calculator tool designed for quoting air conditioning equipment maintenance jobs. The tool will be primarily used by technicians.

Key Requirements:
- The calculator must provide a comprehensive quote including:
- Cost estimates
- Time estimates
- Parts needed
- Types of visits (major/minor, cooling/heating)

Ideal Skills:
- Proficiency in software development with a focus on creating user-friendly calculators.
- Previous experience with HVAC systems will be a significant advantage.
- Excellent understanding of cost estimation and time management in a maintenance context.