# MEP Calc - HVAC / Fire Tools — Pipe, Duct & Sprinkler Design > Pipe, Duct & Sprinkler Design (iPhone/iPad app by Ahmet Selvi.) - Source: https://appshunter.io/ios/app/mep-calc-hvac-fire-tools/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 · 27 MB - Languages: American English, Arabic, French (France), European Spanish, Turkish - Released: 2026-03-26 - Data updated: 2026-08-24 - User reviews in markdown: https://appshunter.io/ios/app/mep-calc-hvac-fire-tools/id6759204237/reviews.md ## What is MEP Calc? Professional calculation tool for mechanical installation engineers. 86+ calculation modules across 9 categories to accelerate your MEP projects. CALCULATION CATEGORIES * Fire Protection (20 modules) • Sprinkler system design (NFPA 13, BS EN 12845, FM Global) • FM200 clean agent suppression (ISO 14520) • Foam fire suppression (NFPA 11) • NPSH - Net Positive Suction Head • Fire pump equipment selection (NFPA 20) • Dry valve compressor, test drain valve & more • Sprinkler K-factor & glass bulb reference tables * Heating Systems (18 modules) • Pipe sizing (ISISAN DIN 2440) • Circulation pump, expansion tank • Radiator, underfloor heating • Collector, balance tank, separator selection • Pipe insulation thickness calculation * Cooling Systems (10 modules) • Chiller pump & pump head calculation • Pipe sizing, pipe internal volume • Buffer tank, cooling tower selection • Condensation prevention insulation * HVAC (8 modules) • Duct sizing (Darcy-Weisbach method) • Air handling unit (ASHRAE psychrometric) • Fan selection, diffuser calculation • Pool dehumidification * Plumbing (8 modules) • Cold water, wastewater pipe sizing • Hydrophore selection • Hot water system calculation * Natural Gas (6 modules) • Gas pipe sizing, pressure drop • Regulator, meter selection • Ventilation calculation * Compressed Air (4 modules) • Compressed air pipe sizing • Compressor, air tank selection * Steam (5 modules) • Steam pipe, condensate pipe • Capacity, boiler, steam trap calculation KEY FEATURES * 86+ Calculation Modules — All mechanical systems calculations in one app * International Standards — NFPA 13, BS EN 12845, FM Global, ASHRAE, DIN, ISO * PDF Reports — Save and share results as professional PDF reports * SI & IP Units — Switch between Metric and Imperial unit systems * English & Turkish — Full bilingual support * Works Offline — No internet required, perfect for field use * Unit Converter — 6 categories of integrated unit conversion * Favorites — Save frequently used calculations for quick access * iPad Optimized — Enhanced experience on larger screens PRO SUBSCRIPTION Fire protection calculation modules (sprinkler, FM200, foam suppression, NPSH, pump equipment & more) require a PRO subscription. All other categories are completely free. Subscription options: • Monthly • Yearly Payment is charged to your iTunes account. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage in Settings > Apple ID > Subscriptions. 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 | ## Version history (last 5 releases) ### 9.6 — 2026-08-19 Minor bug fixes and performance improvements. ### 9.2 — 2026-08-14 Some bugs have been fixed, making engineers' work easier than ever. ### 9.0.3 — 2026-07-21 The lifetime purchase option has been removed. PRO access continues through the annual subscription. Purchase and Restore Purchases reliability has been improved. ### 9.0 — 2026-07-17 New calculation modules have been added, multilingual support has been expanded, and various stability and purchase-flow issues have been fixed. ### 8.8 — 2026-07-07 This release is a major overhaul: • NEW: Completely redesigned intro screens — see sprinkler and AHU calculations the moment you open the app • NEW: "You Choose" mode in duct sizing — solve for flow, velocity or area in the Q = v × A triangle • NEW: Peak Duration in the sewage pump module now calculates peak wastewater volume (wet well sizing) • Calculation accuracy: 60+ improvements — full sync with NFPA 13 tables, elevation correction in gas pressure drop, steam boiler power, booster pump selection, min DN100 rule on WC lines • Escape distance tables updated to match regulations exactly • PDF reports: safety warnings now included, Arabic alignment fixed, missing translations completed • Performance: faster PDF generation and smoother settings screen • Improved purchase and restore flows with error messages in 5 languages • Numerous bug fixes and UI polish We'd love to hear your feedback! ## 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) All apps by Ahmet Selvi: https://appshunter.io/developer/1864624578 ## Related topics [lomanco vent tools](https://appshunter.io/ios/topics/lomanco-vent-tools) --- *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 2026-08-24.*