# HydroSizer: Pipe & Pump Head — Hydronic Sizing & Head Loss

> Hydronic Sizing & Head Loss (iPhone/iPad app by Duong Nguyen Huu.)

- Source: https://appshunter.io/ios/app/hydrosizer-pipe-and-pump-head/id6795623633 (this page in markdown: same URL + `.md`)
- Developer: [Duong Nguyen Huu](https://appshunter.io/developer/1887479789)
- Category: Utilities, Productivity
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.4 · 30 MB
- Languages: American English
- Released: 2026-08-02
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/hydrosizer-pipe-and-pump-head/id6795623633/reviews.md

## What is HydroSizer?

HydroSizer puts hydronic pipe sizing and pump head in your pocket. Size chilled- and hot-water pipes in seconds, then build the total dynamic head to select your pump — all offline, no subscription.

PIPE SIZING
• Enter flow (GPM, L/s, m³/h) plus a target head-loss rate or velocity
• Get the exact bore and the nearest nominal size for steel, copper, PEX or CPVC
• See actual velocity, head-loss rate and Reynolds number instantly
• Velocity guidance keeps you inside the design band

PUMP HEAD (TDH)
• Add pipe runs, fittings and equipment pressure drops
• Get total dynamic head with a clear breakdown: pipe, fittings, equipment, static
• Closed- and open-loop handling done right

ACCURATE ENGINE
• Darcy–Weisbach with Colebrook–White friction — or switch to Hazen–Williams
• Water properties by temperature; fittings via K-factor or equivalent length

BUILT FOR REAL WORK
• 100% offline — works anywhere, no signal needed
• One-time purchase — no ads, no subscription, no account, no data collected
• Fast, real-time results in a clean, modern interface
• US and metric units throughout

From the makers of AirCalc, DuctSizer and RefCalc — engineering tools that just work.


## Version history (last 1 release)

### 1.0 — 2026-08-03

No release notes.

## More apps by Duong Nguyen Huu

- [Tích Sản: Giá Vàng & Tài Sản](https://appshunter.io/ios/app/tich-san-gia-vang-and-tai-san/id6761044270)
- [PDFScan Go](https://appshunter.io/ios/app/pdfscan-go/id6761462436)
- [AirCalc Psychrometric](https://appshunter.io/ios/app/aircalc-psychrometric/id6762062746)
- [Daily Health Reminder App](https://appshunter.io/ios/app/daily-health-reminder-app/id6762444133)
- [Meno Health Tracker](https://appshunter.io/ios/app/meno-health-tracker/id6762710155)
- [Barber Việt Nam](https://appshunter.io/ios/app/barber-viet-nam/id6763964976)

All apps by Duong Nguyen Huu: https://appshunter.io/developer/1887479789

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*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 2026-08-17.*