This app provides HVAC inspection tools and guidelines for home inspectors. It helps estimate equipment age, size, and requirements, giving inspectors confidence in their reports.
4.2(11 ratings)
Free
Best apps like Thermaflex Duct Calculator
10+ similar apps compared and reviewed
4.4 avg rating
6 free apps
Updated July 2026
Looking for something like Thermaflex Duct Calculator? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.
Top Alternatives to Thermaflex Duct Calculator
Duct Calculator - DuctCalc by Mikhail Nikitin
HVAC Sizing & PsychrometricStrong Contender
🔧 Utilities
5.0(7 ratings)
FreeIn-App Purchases
This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.
5.0(1 ratings)
FreeIn-App Purchases
This app offers three specialized modules for HVAC engineers: a psychrometric calculator for air properties, a pipe calculator for fluid dynamics and selection, and a duct calculator for air speed and pressure loss. It provides detailed calculations and reference formulas in both SI and IP units.
More apps like Thermaflex Duct Calculator
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Duct Calculator Elite
HVAC Ductulator & Duct Sizing
$9.99
This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.
Calculate duct size, velocity, pressure drop, flow rateDuct Size by Airflow modeDuct Size by Dimension mode
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AI Ductulator
by pasquale dipaola
$3.99
This application serves as a duct sizing calculator for HVAC professionals and enthusiasts. It provides quick and accurate calculations for duct dimensions based on various parameters.
Duct sizing calculationsHVAC parameter inputAccurate dimension results
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HVAC Duct Sizer
HVAC duct sizing and more...
$5.99
This app provides quick and simple HVAC duct sizing analysis. It allows users to calculate duct dimensions based on airflow or existing dimensions, and can also determine a range of duct sizes. Results can be emailed for further analysis.
Duct sizing by airflowDuct sizing by dimensionsRange of duct sizes calculation
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Duct Calculator S&P
by S&P SISTEMAS DE VENTILACION SL.
Free
This utility app performs essential calculations for ventilation systems. It offers tools for converting duct sizes, determining air parameters like speed and airflow, and calculating pressure drops. It also includes a unit converter for various measurements.
Diameter conversion (circular to rectangular)Ventilation parameter calculation (diameter, speed, airflow, pressure)Pressure drop calculation for straight sections and system elements
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Digiduct
Duct-Sizing App
Free
This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.
Duct sizing for rectangular, round, and flat oval ductsCustomizable dimensions with locked valuesDuct location intelligence for context-aware sizing
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Duct Calculator
Ductulator & Duct Sizer
$19.99
This app allows HVAC professionals to quickly and accurately size new ducts or calculate the performance of existing ones. It supports both round and rectangular ductwork, offering precise calculations through direct entry or intuitive sliders. The tool provides live updates and outputs key performance metrics.
Size round and rectangular ductworkAdjust airflow, diameter, width, and heightDirect number entry for precision
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Rheem Calcu Save
by Copeland LP
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This app helps HVAC contractors quickly calculate and present potential cost savings to homeowners when comparing residential HVAC system replacements. It generates professional reports showing annual savings for high-efficiency systems, aiding customer decision-making.
Calculate HVAC system replacement cost savingsCompare multiple replacement optionsGenerate professional graphical reports
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