--- title: "CaptiveAire Toolbox - Reviews, Revenue and Downloads in Brazil | Apple App Store" description: "The CaptiveAire Toolbox puts 40+ HVAC and building-systems engineering calculators in your pocket. Designed for engineers, contractors, and technicians, every formula uses standard industry references" --- # CaptiveAire Toolbox — Brazil ![CaptiveAire Toolbox App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/0d/61/85/0d618571-d1b0-0627-8bd6-c5317b1597e2/appicon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png) **Developer:** [Captive-Aire Systems](https://apptail.io/developer/captive-aire-systems-GIYUjc) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** com.captiveaire.toolbox **Store:** Apple App Store **Country:** Brazil **Version:** 1.5.2 (released 2026-10-22) **Original Release:** 2026-05-07 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/br/app/app/id6765656560) **AppTail Page:** [https://apptail.io/app/captiveaire-toolbox-qJPz/brazil](https://apptail.io/app/captiveaire-toolbox-qJPz/brazil) ## CaptiveAire Toolbox Description The CaptiveAire Toolbox puts 40+ HVAC and building-systems engineering calculators in your pocket. Designed for engineers, contractors, and technicians, every formula uses standard industry references (ASHRAE, AMCA, NEC), sized so you can run sanity checks in the field instead of pulling out a laptop. Cooling: Total Cooling Load (enthalpy-based with humidity), Sensible Cooling Load, Latent Cooling Load, SEER, Cost of Cooling, Tons to BTU/hr conversions, DX/MPU Cooling, Evaporative Cooling, DMUA mode logic, Cooling Density Factor. Heating: BTU output for direct and indirect fired heaters, Input and Output BTU/hr for IBT systems, Temperature Rise from BTU and CFM, Heat Pump capacity with airflow and outdoor temperature adjustment, Reheat Coil leaving conditions, Manifold Pressure for natural gas and LP, Heating Density Factor. Ventilation and Airflow: Room Volume CFM, Sensible Heat CFM, Cooling Load CFM, Duct Velocity CFM, Outdoor Air Load (sensible plus latent), Psychrometric properties from dry bulb plus RH or wet bulb, Fan Energy Index per AMCA 208, Motor Adjusted Frequency for VFDs, ERV ROI Calculator with degree-day economics. Electrical Sizing: Wire Size per NEC Table, MCA and MOCP for motor circuits, Amperage from horsepower. Piping and Structural: Round Duct Sizing using Darcy-Weisbach and Colebrook-White, Duct Velocity and Friction, Piping Pressure Drop with fittings equivalent length, Pitched Roof curb height variation. Valve and Flow Sizing: Kv from flow rate, flow rate from Kv, pressure drop from Kv, Cv to Kv conversion, Heat Load to Flow Rate for water and glycol. Reference: ASHRAE Weather Station data with autocomplete address search, returning heating and cooling design temperatures, solar irradiance, wind speeds, and monthly design-day temperatures. Interactive Psychrometric Chart with property calculations. Modern HVAC versus Traditional Rooftop Unit comparison. Each calculator includes the formula and variable definitions accessible from the title bar. Tap the info icon to see exactly what equation drives the result. Built by the engineering team at CaptiveAire Systems. No tracking, no ads, no account required. ## CaptiveAire Toolbox Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c8/75/dd/c875ddc5-e88a-51e0-6e0f-8de0bfb1e2e8/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-05-07_at_11.12.57.png/1320x2868.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/eb/5a/a9/eb5aa9b3-123b-815c-ca43-3d815466fcbe/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-05-07_at_11.08.14.png/1320x2868.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/9e/c6/21/9ec62164-2eff-e582-8526-a267d6f8dc5b/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-05-07_at_11.10.24.png/1320x2868.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/0f/1b/48/0f1b48a2-8509-2726-0069-9f199a952079/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-05-07_at_11.09.03.png/1320x2868.png) ## CaptiveAire Toolbox Available In - [Austria](https://apptail.io/app/captiveaire-toolbox-qJPz/austria) - [Bulgaria](https://apptail.io/app/captiveaire-toolbox-qJPz/bulgaria) - [Brazil](https://apptail.io/app/captiveaire-toolbox-qJPz/brazil) - [Belarus](https://apptail.io/app/captiveaire-toolbox-qJPz/belarus) - [China](https://apptail.io/app/captiveaire-toolbox-qJPz/china) - [Colombia](https://apptail.io/app/captiveaire-toolbox-qJPz/colombia) - [Germany](https://apptail.io/app/captiveaire-toolbox-qJPz/germany) - [Dominican Republic](https://apptail.io/app/captiveaire-toolbox-qJPz/dominican-republic) - [Estonia](https://apptail.io/app/captiveaire-toolbox-qJPz/estonia) - [Egypt](https://apptail.io/app/captiveaire-toolbox-qJPz/egypt) - [Spain](https://apptail.io/app/captiveaire-toolbox-qJPz/spain) - [France](https://apptail.io/app/captiveaire-toolbox-qJPz/france) - [Grenada](https://apptail.io/app/captiveaire-toolbox-qJPz/grenada) - [Hong Kong SAR China](https://apptail.io/app/captiveaire-toolbox-qJPz/hong-kong) - [Honduras](https://apptail.io/app/captiveaire-toolbox-qJPz/honduras) - [Hungary](https://apptail.io/app/captiveaire-toolbox-qJPz/hungary) - [Israel](https://apptail.io/app/captiveaire-toolbox-qJPz/israel) - [South Korea](https://apptail.io/app/captiveaire-toolbox-qJPz/south-korea) - [Kuwait](https://apptail.io/app/captiveaire-toolbox-qJPz/kuwait) - [Lebanon](https://apptail.io/app/captiveaire-toolbox-qJPz/lebanon) - [Mexico](https://apptail.io/app/captiveaire-toolbox-qJPz/mexico) - [Nigeria](https://apptail.io/app/captiveaire-toolbox-qJPz/nigeria) - [Netherlands](https://apptail.io/app/captiveaire-toolbox-qJPz/netherlands) - [Peru](https://apptail.io/app/captiveaire-toolbox-qJPz/peru) - [Saudi Arabia](https://apptail.io/app/captiveaire-toolbox-qJPz/saudi-arabia) - [Taiwan](https://apptail.io/app/captiveaire-toolbox-qJPz/taiwan) - [Vietnam](https://apptail.io/app/captiveaire-toolbox-qJPz/vietnam) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*