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 Greenheck Toolbox
10+ similar apps compared and reviewed
4.5 avg rating
7 free apps
Updated July 2026
Whether you want more options like Greenheck Toolbox 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 Greenheck Toolbox
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.
AI Ductulator by pasquale dipaola
Worth Considering
🔧 Utilities
3.9(9 ratings)
$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.
More apps like Greenheck Toolbox
4
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
🔧 Utilities
(179)
free5
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
(225)
paid6
AC Calculator - HVAC Sizing
Air conditioner or Heat Pump
Free
This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.
Calculate BTU/h capacityRecommend equipment typesConvert BTU, kW, Kcal, Tons
🔧 Utilities
(20)
free with in-app purchases7
CORE Service
by Lennox Industries
Free
This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.
Wireless mobile service appGuided setup with progress indicatorsEnhanced test functionality
🔧 Utilities
(17)
free8
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)
free9
Melink Cx
Melink Technicians & Engineers
Free
🔧 Utilities
(0)
10
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
🔧 Utilities
(11)
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