Design and Analysis Tools

Backed by our extensive history of HVAC system design and software simulation knowledge, our cutting-edge tools answer your challenges and help empower you to create a more sustainable, efficient and healthy world.

Calculators and Charts

We created these free resources to help make your design and analysis tasks easier. Click to learn more or to get started.

LEED v4 EA Enhanced Refrigerant Management Credit calculator

Use this spreadsheet to determine whether the HVAC equipment-and-refrigerant combinations in a prospective LEED project comply with the calculation method for LEED v4.

LEED v3 (2009) EA Credit 4 calculator

Use this spreadsheet to determine whether the HVAC equipment-and-refrigerant combinations in a prospective LEED project comply with the calculation method for LEED v3 (2009)

LEED v2.2 EA Credit 4 calculator

Use this spreadsheet to determine whether the HVAC equipment-and-refrigerant combinations in a prospective LEED project comply with the calculation method for LEED-NC version 2.2.

Trane Psychrometric Chart

For professional reports, use this electronic psychrometric chart tool. Click to download this program to your PC. These charts focus on the range of temperatures most suitable for comfort-cooling HVAC applications, and include the Trane coil curves, which depict the condition of the air leaving a cooling coil.

Also, printed psychrometric charts are available to order.

Condenser Relief Calculator

Use this spreadsheet to calculate the condenser relief for input into System Analyzer™

Unloading Curve Calculator

Use this spreadsheet this spreadsheet to calculate the constant condenser temperature unloading curves for input into System Analyzer™ or TRACE™ 700.

Ductulator & Psychrometric Charts (HVAC Tools)

HVAC Design Tools

HVAC design tools include such popular items as the Trane Ductulator™, psychrometric charts, and load estimating forms.

Learn more about the order process here.

Ductulator - Hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective sleeve with ASHRAE recommended design air velocities for system components/applications. $12.00

Psychrometric Chart - std. altitude, 8.5" x 11" pad of 25. $7.50
Psychrometric Chart - std. altitude, 11" x 17" pad of 25. $10.00
Psychrometric Chart - std. altitude, 11" x 17" laminated chart. $15.00
Psychrometric Chart - high altitude (24 in. Hg), 8.5" x 11" pad of 25. $7.50
Psychrometric Chart - std. altitude, 8.5" x 11" pad of 25, SI units. $10.00
Psychrometric Chart - std. altitude, 11" x 17" pad of 25, SI units. $10.00
Psychrometric Chart - std. altitude, 11" x 17" laminated chart, SI units. $15.00
Equilibrium Chart for Lithium Bromide Solutions - 11" x 17" laminated chart. $15.00