Plans for every stage of your engineering work
Calculate for free. Upgrade when you need saved projects, reports, drawings or CAD models.
Free
All finned-tube calculators
Free
- DX evaporator, condenser, chilled water, hot water, steam and dry cooler calculators
- Psychrometric calculator
- Up to 3 projects and 5 exchangers, 10 calculations each
- Basic geometry library
- Most popular
Professional
Save, report and draw
R$245/month
- Everything in Free, without calculation limits
- Save and edit projects
- PDF technical reports with your company branding
- CSV and JSON exports
- 2D drawings with DXF export
- Full geometry library
Enterprise
3D, CAD and integration
R$745/month
- Everything in Professional
- 3D viewer with STL and STEP export
- Circuitry designer and header configuration
- Project version history
- REST API access with API keys
Manufacturer
AI-assisted design
US$300/month
- Everything in Enterprise
- AI-assisted design analysis
- Optimization suggestions
- Assisted circuitry design
Prices are shown in the currency charged at checkout (Stripe). Your card issuer may apply its own exchange rate. Cancel any time from your account.
Shell & tube add-on
The shell-and-tube module is a separate monthly subscription that can be combined with any plan.
US$329/month
- Bell-Delaware rating and sizing
- TEMA shell and head types
- 2D drawing, DXF and STEP 3D
- BOM, weights and PDF report
Academic access
Students, professors and researchers can request free access for teaching and research. Each request is reviewed manually.
Compare plans
| Feature | Free | Professional | Enterprise | Manufacturer |
|---|---|---|---|---|
| Six finned-tube calculators | ✓ | ✓ | ✓ | ✓ |
| Calculation limits | 5 exchangers × 10 | None | None | None |
| Save projects | — | ✓ | ✓ | ✓ |
| PDF, CSV and JSON export | — | ✓ | ✓ | ✓ |
| 2D drawing and DXF | — | ✓ | ✓ | ✓ |
| 3D, STL and STEP | — | — | ✓ | ✓ |
| Circuitry designer and headers | — | — | ✓ | ✓ |
| REST API | — | — | ✓ | ✓ |
| AI-assisted analysis | — | — | — | ✓ |
Billing questions
Do I need a credit card for the free plan?
No. Create an account and use the six finned-tube calculators within the free limits for as long as you like.
How do I cancel?
Open your account page and cancel the subscription. You can also contact support and we will help you.
Why are some prices in BRL and others in USD?
Each plan is shown in the currency in which Stripe charges it. International cards are accepted; your bank converts the amount.
Is the shell-and-tube module included in Enterprise?
No. Shell and tube is a separate add-on subscription.
- ExCoil produces preliminary engineering estimates. Results must be reviewed by a qualified engineer and validated by testing before manufacturing or certification.