Best apps like HVAC Load Calculator Manual J

10+ similar apps compared and reviewed

4.7 avg rating
10 free apps
Updated September 2026

HVAC Load Calculator Manual J is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to HVAC Load Calculator Manual J

Ductulator - Duct Calculator#2

Ductulator - Duct Calculator by Mikhail Nikitin

HVAC Airflow Sizing & Design
Strong Contender
🔧 Utilities
4.6(32 ratings)
FreeIn-App Purchases
Ductulator - Duct Calculator screenshot 1
Ductulator - Duct Calculator screenshot 2
Ductulator - Duct Calculator screenshot 3
Ductulator - Duct Calculator screenshot 4
Ductulator - Duct Calculator screenshot 5
Ductulator - Duct Calculator screenshot 6

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.

More apps like HVAC Load Calculator Manual J

4
ScanPlan: HVAC Load & Ducts
ScanPlan: HVAC Load & Ducts
ScanPlan: HVAC Load & Ducts
LiDAR floor plans & Manual J
Free

This app transforms your iPhone or iPad Pro into a comprehensive HVAC design toolkit. It allows for on-site room scanning with LiDAR, calculation of heating and cooling loads, duct and equipment sizing, and generation of professional PDF reports.

LiDAR room scanningManual J load calculationsDuct and equipment sizing
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Digiduct
Digiduct
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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Blue Cold Heat Load Calculator
Blue Cold Heat Load Calculator
Blue Cold Heat Load Calculator
by Blue Cold Refrigeration Private Limited
Free

Accurately calculate the cooling capacity needed for cold rooms, storage, and freezers. Input room details, insulation, temperatures, and product information for precise, data-driven recommendations. Generate shareable PDF reports for your projects.

Calculate cooling capacityInput room dimensions and insulationDetermine optimal pressure requirements
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free
7
CoolCalc - HVAC Tools
CoolCalc - HVAC Tools
CoolCalc - HVAC Tools
Superheat, subcool, duct sizer
Free
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Refrigerant Charge Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
HVACR Check PT Chart Superheat
Free

This tool helps HVAC and refrigeration technicians quickly determine the correct refrigerant charge for various systems. It provides instant verdicts like 'Add,' 'Hold,' or 'Remove' based on superheat or subcooling measurements, supporting numerous refrigerants and unit conversions. The app functions offline and allows for saving job details and generating PDF reports.

Charge check by superheatCharge check by subcoolingLine-set charge estimation
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9
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)
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free with in-app purchases
10
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Electrical Toolkit by HCP
Conduit + load calcs for pros
Free

This comprehensive mobile toolkit provides electricians and professionals with essential calculations, NEC-compliant tools, and field utilities. It offers features for conduit bending, fill calculations, load analysis, and various electrical calculators, all designed for speed and clarity.

Conduit bending calculationsNEC-compliant conduit fillResidential load calculations
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