Trusted by HVAC&R Engineers Worldwide

Heat ExchangerSelection Software

Professional thermal analysis for DX evaporators, condensers, chilled water, hot water, and steam coils. Designed for engineers who demand accuracy.

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5
Calculator Types
6
Refrigerants
21
Compressor Models
0.00%
Energy Balance Error

Complete Heat Exchanger Analysis Suite

Five specialized calculators covering all major heat exchanger types used in HVAC&R systems

Direct Expansion Cooling

DX Evaporator Calculator

Complete thermal analysis for direct expansion evaporator coils using a segmented finite-volume solver. Automatically detects wet/dry coil conditions and calculates two-phase refrigerant behavior with energy balance verification.

  • Segmented finite-volume solver with wet/dry detection
  • Two-phase refrigerant modeling (R410A, R32, R134a, R290, R1234yf, R22)
  • Automatic energy balance verification (0.00% error)
  • Psychrometric analysis with dehumidification
  • Professional PDF reports with coil drawings
DX Evaporator Calculator showing thermal analysis results
DX Condenser Calculator showing 3-zone analysis
Heat Rejection

DX Condenser Calculator

Advanced 3-zone segmented solver for air-cooled condensers. Separately calculates desuperheat, condensation, and subcooling zones with automatic energy balance and approach temperature optimization.

  • 3-zone analysis: desuperheat, condensation, subcooling
  • Zone-by-zone capacity breakdown
  • Approach temperature optimization
  • Multiple refrigerant support
  • Automatic energy balance verification
Chilled Water Coil
Comprehensive sizing and rating for chilled water coils. Supports pure water and water-glycol mixtures (0-60%). NTU-effectiveness method with dehumidification analysis.
Chilled Water Coil Calculator
Hot Water Coil
Hot water heating coil design and selection. Calculates sensible heating capacity with accurate heat transfer coefficients and pressure drop analysis.
Hot Water Coil Calculator
Steam Coil
Steam heating coil analysis with Nusselt film condensation correlations. Supports 50-1000 kPa gauge with RATING and SIZING modes.
Steam Coil Calculator
Automatic Compressor Selection

Dehumidifier Builder

Build complete dehumidifier systems with automatic compressor matching. Select from 21 Copeland ZP scroll compressors with real performance data.

  • 21 Copeland ZP scroll compressor models
  • Automatic capacity matching algorithm
  • Real compressor performance curves
  • Complete system specifications
  • Professional PDF system reports
Dehumidifier Builder InterfaceDehumidifier Results with Compressor Selection
Project Manager Interface
Organization & Workflow

Project Manager

Organize your calculations by project with automatic model code generation. Track all coils, systems, and dehumidifiers in one place with full version history.

  • Automatic model code generation (e.g., EC-DXE-001)
  • Project-based organization
  • Full calculation version history
  • Multi-coil project support
  • Client and location tracking

Built for Professional Engineers

Every feature designed to save time and improve accuracy in your HVAC&R projects

PDF Reports
Professional reports with technical drawings, dimensions, and performance data
Unit Conversion
Work in SI, Imperial, or mixed units. Automatic conversion throughout
Version History
Full audit trail with calculation versioning and change tracking
Psychrometric Charts
Visual psychrometric analysis with process lines and state points

Fast Calculations

Get accurate results in seconds with our optimized calculation engine. No waiting, no delays.

Secure & Reliable

Your data is encrypted and backed up automatically. Enterprise-grade security for your projects.

Accurate Results

Industry-standard correlations validated against manufacturer data. Trust your calculations.

Trusted by HVAC&R Engineers

See what professionals are saying about ExCoil

MR
Michael Rodriguez
Senior HVAC Engineer

"ExCoil has transformed how I approach heat exchanger selection. The energy balance verification gives me confidence that my calculations are accurate. The 0.00% error is not just marketing - it's real."

SK
Sarah Kim
Refrigeration Specialist

"The Dehumidifier Builder with automatic compressor selection saved me hours of manual calculations. Having 21 Copeland compressors with real performance data is invaluable for system design."

DT
David Thompson
MEP Consultant

"The Project Manager feature keeps all my calculations organized with automatic model codes. Professional PDF reports impress clients and the version history is essential for project documentation."

Trusted by engineers at leading companies

Carrier
Trane
Johnson Controls
Daikin
Lennox
Helioterm

Ready to Streamline Your Heat Exchanger Calculations?

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