Everything unlocked for 7 days
Simple pricing for engineers
Start free, try every tool for seven days, then keep the full toolkit for a flat monthly price. Cancel anytime.
Free
Stays free on every account.
$0/ month
- Heat load calculator (Manual-J style)
- Refrigerant PT charts
- Unit converters
- 7-day full-access trial on sign-up
Most popular
Pro
The complete HVAC engineering toolkit.
$10/ month
- Every calculator: duct sizing, static pressure, duct weight, VRF piping, radiators, air terminals
- Drawing board with CAD/DXF underlay, diffusers and equipment schedules
- Cost estimation and branded PDF / CSV quotations
- AI diagnosis with structured troubleshooting steps
- Superheat / subcooling and service references
- English and Arabic, Metric and Imperial
Subscriptions are paid by Whish Money transfer. We activate your plan as soon as we confirm the transfer.
Team
Pro access for your whole crew.
$40/ seat / month
- Everything in Pro for every seat
- Up to 5 engineers under one subscription
- Invite and remove members from the dashboard
- One invoice for the whole team
$80 / month
Invite colleagues by email after checkout. Seats can be reassigned anytime.
Questions about billing? Reply to any invoice email and we'll help.