ABOUT

Built for technicians in the field

HVAC-Buddy is a field-first toolkit of HVAC calculators designed to be fast on mobile, clear about units, and honest about assumptions.

Focus: speed + trustMode: anonymous-firstPlanned: sign-in + saving
Current build note: This site is being rebuilt in Next.js. Authentication (Clerk), persistence (Convex), and tier gating (with billing later) are part of the v1 roadmap.
What HVAC-Buddy is
Field-first

The goal is to make common field calculations quick, reproducible, and easy to document.

  • Calculator pages are designed for one-handed mobile use.
  • Results include copyable summaries for job notes.
  • Guidance avoids false certainty: OEM procedures come first.
  • Anonymous usage is supported; sign-in is planned for saving history.
Open calculatorsOpen PT Chart →
Safety note: HVAC-Buddy tools provide guidance and estimates. Always follow OEM procedures, local codes, and safe work practices.
What’s next (high level)
Planned
  • PT datasets (versioned) and fast PT lookup that can work offline after first load.
  • Sign-in + saved calculation history for returning users.
  • Feature gating by tier (Free / Pro / Team / Enterprise) with honest UX.
  • Team plan with server-side seat enforcement (3 active seats) by default.
Use calculatorsOpen Learn →Privacy