Apps Like SwiftSize for iPhone and iPad
Calculate HVAC load and generate PDF report
HVAC load calculator Measure home exposures on-site to size heating and air conditioning equipment. Generate detailed PDF reports. Reduce engineering time for accurate results. Sync with devices for real-time data.
SwiftSize screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.



iAquaLink
Zodiac Pool Systems
Monitor and control pool equipment remotely
Monitor and control pool equipment remotely. Adjust pump schedules, manage heating systems, and automate water treatment. View real-time data on water chemistry and equipment status. Receive alerts for system issues and manual override options.

Conduit HVAC Toolkit
Conduit Tech, Inc.
Scan homes, create models, calculate loads, visualize
Create 3D models and 2D floor plans using LiDAR scans. Perform ACCA-certified load calculations. Visualize equipment placement with augmented reality. Generate sales-ready visualizations for client presentations.


Greenheck Toolbox
Greenheck Fan Corporation
Calculate fan laws and size ducts
Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.


GasTech Calculator Pro
Maksymilian Lopatowski
Calculate gas volumes and pressures
Volume to energy converter calculates gas volume to energy with temperature and pressure adjustments. Professional pipe sizing uses BS 6891:2015 standards for accurate sizing. Includes 9+ calculators for gas engineering tasks.







Duct Calculator Elite
Cyberprodigy LLC
Calculate size, velocity, and pressure drop
™ lets users input airflow, velocity, or friction to determine size. Calculate pressure drop and flow rate. Input dimensions for custom shapes. Export results and save calculations.



Aquanta
Aquanta Inc.
Control heating, schedule use, monitor water availability
Monitor hot water availability and receive maintenance alerts including leak detection. Remote control heating with scheduling and automatic overheating shutoff. Learn usage patterns to optimize heating and operate via the .

HVAC Quick Load
Carmel Software Corporation
HVAC load calculations for buildings.
The app performs rule-of-thumb HVAC load calculations for various building types. Users input building area and occupants to determine heating, cooling loads, and air flows.

How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.