Heat exchanger coil calculator

Size finned-tube heat exchangers for HVAC and refrigeration. Six coil types, segment-by-segment thermal solver, automatic circuiting, 3D visualization, and engineering drawings.

DX EvaporatorDX CondenserChilled WaterHot WaterSteamDry Cooler

Capabilities

Segment-by-segment solver

50-segment discretization with real refrigerant properties. Handles two-phase regions, superheat, and subcooling accurately.

Automatic circuiting

Generate circuit configurations with same-side and opposite-side connections. Visual 2D diagram with PDF export.

3D geometry & thermal view

Interactive 3D model with tubes, fins, and return bends. Thermal heatmap overlay showing temperature distribution.

Engineering drawings

Export professional 2D dimensional drawings in PDF with ISO-standard annotations, dimension lines, and title blocks.

What you get

Thermal Calculation Results

3D Model with Thermal View

2D Engineering Drawing (PDF)

Technical specifications

NTU-LMTD thermal calculation methods

Refrigerants: R-410A, R-134a, R-32, R-407C, R-22

Glycol mixtures: ethylene and propylene glycol

Tube materials: copper, aluminum, stainless steel

Fin types: flat, wavy, louvered, corrugated

Tube patterns: staggered and inline

Air-side correlations: Wang et al., Kim et al.

Fouling factors per ASHRAE standards

Pressure drop: air-side and fluid-side

PDF reports with full calculation breakdown

Start sizing heat exchangers

Create a free account to access all coil calculators. Professional plans unlock PDF reports, 3D export, and advanced features.