Best IN HVAC Calculator alternatives: apps like IN HVAC Calculator

10+ similar apps compared and reviewed

4.6 avg rating
9 free apps
Updated November 2026

Whether you want more options like IN HVAC Calculator or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to IN HVAC Calculator

Allday HVAC Calc#1

Allday HVAC Calc by Dmitrii Pankov

Duct, Pipe & Psychrometrics
Editor's Choice
🔧 Utilities
5.0(1 ratings)
FreeIn-App Purchases
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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.

Digiduct#3

Digiduct by Syska Hennessy Group

Duct-Sizing App
Worth Considering
🔧 Utilities
4.6(11 ratings)
Free
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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.

More apps like IN HVAC Calculator

4
Duct Calculator S&P
Duct Calculator S&P
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
🔧 Utilities
(1)
free
5
Duct Calculator Elite
Duct Calculator Elite
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
🔧 Utilities
(234)
paid
6
Ductulator - Duct Calculator
Ductulator - Duct Calculator
Ductulator - Duct Calculator
HVAC Airflow Sizing & Design
Free

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.

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart
🔧 Utilities
(36)
free with in-app purchases
7
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
Construction Math & Trade Pro
Free

This app provides advanced calculations for HVAC and sheet metal professionals. It simplifies complex dimensional math, geometry, and trigonometry with specialized functions for ducting, airflow, and construction layouts. Offers a free trial before committing to a subscription.

Sheet metal calculations (radius, offset, wrapper length)Trigonometric functions (sine, cosine, tangent, arc)HVAC specific calculations (fan law, CFM, velocity)
🔧 Utilities
(90)
free with in-app purchases
8
HVAC Load Calculator Manual J
HVAC Load Calculator Manual J
HVAC Load Calculator Manual J
AC, Heat Pump & Furnace Sizing
Free

This app provides professional HVAC load calculations for field technicians. It offers multiple accuracy levels, from quick estimates to detailed analysis, and supports room measurement via LiDAR. Generate professional PDF reports and document site details.

Manual J 8th Edition calculationsThree accuracy levels: Simple, Moderate, ProLiDAR room measurement (iOS 16+)
🔧 Utilities
(44)
free with in-app purchases
9
Bluon HVAC
Bluon HVAC
Bluon HVAC
HVAC Tools
Free

Access a vast database of HVAC-R and plumbing unit documentation, including specs, manuals, and replacement parts. Get AI-powered troubleshooting and connect with live veteran technicians for support.

35,000,000+ HVAC unit databaseModel specs, age, and warranty infoOriginal parts and replacement options
🔧 Utilities
(4.5K)
ad-supported
10
Installer App
Installer App
Installer App
Essential HVAC tools
Free

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and tools for project management, hydronic balancing, and calculations.

Radiator PresettingProduct FinderMy Projects (Cloud-based)
🔧 Utilities
(7)
free