Plans & pricing
Access to the OTS R&D online tools by plan. The workbench is free to explore; a paid subscription unlocks the full fluid library, additional calculation engines, and more cycle topologies. We're rolling out self-service monthly and annual plans — for now, tell us what you need and we'll put together a quote.
Workbench
Subscription tiers for the online engineering tools.
| Feature | Free | Login | Paid | Premium |
|---|---|---|---|---|
| Property calculator (air, refrigerant, water / steam, incompressible glycols & brines) | ||||
| P-h & psychrometric charts, unit & dimensionless calculators | ||||
| SI & IP units throughout | ||||
| Saved units & theme preferences | – | |||
| Refrigerant cycle & air system designers (base topologies) | – | |||
| Full refrigerant library (125+ pure fluids, 148 blends) | – | – | ||
| RefProp 10 & RP-1485 real-air engines, "Compare all" | – | – | ||
| Additional cycle topologies (economizer, cascade, and more) | – | – | ||
| Property derivatives & flash-accuracy control (Fast / Exact) | – | – | – | |
| All cycle topologies (as released) | – | – | – | |
| Technical support & included help hours | – | – | – | |
| Price | Free | Free | Custom — request a quote | |
Get a paid subscription
Self-service monthly and annual checkout is on the way. In the meantime, share your project details and intended use and our team will follow up with a quote and set up your access.