# MEP Calc: HVAC Fire Calculator — Duct, Pipe & Sprinkler Sizing > Duct, Pipe & Sprinkler Sizing (iPhone/iPad app by Ahmet Selvi.) - Source: https://appshunter.io/ios/app/mep-calc-hvac-fire-calculator/id6759204237 (this page in markdown: same URL + `.md`) - Developer: [Ahmet Selvi](https://appshunter.io/developer/1864624578) - Category: Utilities, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 30 MB - Languages: American English, Arabic, French (France), European Spanish, Turkish - Released: 2026-03-26 - Data updated: 2026-10-08 ## What is MEP Calc? MEP Calc brings mechanical installation calculations and reference tools together for HVAC and fire protection engineers. CALCULATION TOOLS Fire Protection • Sprinkler selection using supported NFPA 13, EN 12845 and FM Global criteria • Compare available sprinkler alternatives and use the selected option in the system overview and PDF report • Fire pump equipment sizing, NPSH, clean agent and foam calculations • Dry system compressor, test and drain valve tools • Sprinkler, fire protection and installation reference tables Heating and Cooling • Pipe sizing, circulation pumps and pump head • Expansion tanks, radiators and underfloor heating • Collectors, balance tanks, buffer tanks and cooling towers • Pipe volume and insulation calculations Ventilation and Air Conditioning • Duct sizing and pressure loss • Air handling and psychrometric calculations • Fan and diffuser tools • Pool dehumidification Plumbing, Natural Gas, Compressed Air and Steam • Cold water, wastewater, hot water and booster pump calculations • Gas pipe sizing, pressure drop, regulators and meters • Compressed air pipes, compressors and air receivers • Steam and condensate pipes, boilers and steam traps KEY FEATURES • Five languages: English, Turkish, Arabic, French and Spanish • SI and IP unit systems • Calculation results and reference data in one app • PDF reports for saving and sharing results with Pro • Unit converter and favorites for frequently used tools • iPhone and iPad support • Calculations work offline; purchasing, restoring and refreshing subscription access require an internet connection PRO ACCESS Free tools are available alongside Pro modules. Crown-marked calculations and selected reference tools across multiple categories require an active Pro subscription. PDF export and sharing also require Pro. Not every tool outside the fire protection category is free. MEP Calc currently offers a yearly auto-renewable Pro subscription. New subscriptions have no free trial in any country. The local price and purchase terms are shown before confirmation. Restore Purchases is available in the app. Payment is charged to your Apple Account upon purchase confirmation. The subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account subscription settings. ENGINEERING USE Results depend on the entered data, supported calculation methods and stated limits. These tools assist engineering work; they do not replace project-specific hydraulic design, product listings, applicable local requirements or review by a qualified professional. Privacy Policy: https://fatihselvi1905-bit.github.io/mekaniktesisat-privacy-en/ Terms of Use: https://fatihselvi1905-bit.github.io/mekaniktesisat-terms-en/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | MEP Calc Pro (Yearly) | $34.99 | per year | | MEP Calc Pro (Monthly) | $9.99 | per month | | Pro Monthly - Intro Support | $6.99 | per month | | Pro Yearly - Intro Support | $24.99 | per year | ## Is MEP Calc safe? Not enough ratings yet to assess MEP Calc. ## Is MEP Calc legit? MEP Calc: HVAC Fire Calculator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for MEP Calc is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 10.0 — 2026-10-06 Some minor bugs have been fixed. ### 9.9 — 2026-10-02 Performance improvements and bug fixes. ### 9.8 — 2026-09-17 Sprinkler selection has been improved, and design enhancements have been made ### 9.7 — 2026-09-14 Improved sprinkler selection. ### 9.6 — 2026-08-19 Minor bug fixes and performance improvements. ## Apps similar to MEP Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [HVAC Duct Calculator](https://appshunter.io/ios/app/hvac-duct-calculator/id6780602471) | — | Free | Utilities | | [PocketMEP](https://appshunter.io/ios/app/pocketmep/id6760240233) | — | Free | Utilities | | [Engineering Calculator HVAC](https://appshunter.io/ios/app/engineering-calculator-hvac/id6760564633) | — | Free | Utilities | | [PipeSizer: Diameter Selector](https://appshunter.io/ios/app/pipesizer-diameter-selector/id6781534043) | — | Free | Utilities | | [HVAC Calculator: BTU & AC Load](https://appshunter.io/ios/app/hvac-calculator-btu-and-ac-load/id6783446314) | — | Free | Utilities | | [CaptiveAire Toolbox](https://appshunter.io/ios/app/captiveaire-toolbox/id6765656560) | 5.0 (1) | Free | Utilities | ## More apps by Ahmet Selvi - [Şantiye Takip-Mekanik Tesisat](https://appshunter.io/ios/app/santiye-takip-mekanik-tesisat/id6757112307) - [SprinkCalc: Fire Sprinkler](https://appshunter.io/ios/app/sprinkcalc-fire-sprinkler/id6757990855) - [TS EN 12845 Sprinkler & BYKHY](https://appshunter.io/ios/app/ts-en-12845-sprinkler-and-bykhy/id6793219167) All apps by Ahmet Selvi: https://appshunter.io/developer/1864624578 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-08.*