HVAC Tools is a Windows desktop program that provides quick calculators for 13 common HVAC design tasks, including duct sizing, wire sizing by ampacity and voltage drop, pipe and refrigerant line sizing, mixed air and state-point psychrometrics, fan curve and cost analysis, three-way coil interpolation, U-factor calculations for envelopes, hot/chilled water pipe sizing and analysis, and high/low pressure natural gas pipe sizing, with concise reports and support for English and metric units. It follows ASHRAE and NEC procedures and is intended as a fast utility with minimal input and immediate results displayed alongside inputs; related Elite Software applications handle full system-wide designs when needed.

Key Features

Automates 13 HVAC design tasks Single-purpose calculators with instant results.

• Duct sizing (round and rectangular), wire sizing by ampacity and % voltage drop.
• Pipe sizing, refrigerant line sizing, mixed air and state-point psychrometrics.

Standards-based methods Calculations aligned with industry procedures.

• Uses ASHRAE procedures for HVAC tasks and NEC for wire sizing.
• Three-way interpolation of HVAC unit performance and U-factor calculations.

Fluid, gas, and hydronic sizing Coverage across media types.

• Hot and chilled water pipe sizing and analysis.
• High and low pressure natural gas pipe sizing.

Fan performance and cost analysis Evaluate fans and operating cost.

• Fan curve analysis with cost estimation outputs.
• Concise, comprehensive reports for documentation.

Usability and units Fast utility for engineers and contractors.

• Minimal input; results on the same screen as inputs.
• Supports English (IP) and Metric (SI) units.

Benefits

Speed for routine HVAC calculations Reduces time spent on repetitive tasks.

• Task-focused tools with instant results minimize data entry.
• Keeps calculations in one place for quick what-if checks.

Consistent, standards-aligned outputs Improves reliability and reviewability.

• ASHRAE/NEC-based methods produce defensible results.
• Concise reports aid submittals and internal QA.

Bridges to deeper system design when needed Complements full Elite tools.

• Use Tools for single-item sizing; switch to system-wide programs (e.g., Ductsize) for full designs.
• Shared calculation approaches streamline learning across products.