# PVI OptiSize — Water Heater Sizing

> Water heater sizing tool for facility projects. (iPhone/iPad app by Watts Water Technologies, Inc.)

- Source: https://appshunter.io/ios/app/pvi-optisize/id1496654912 (this page in markdown: same URL + `.md`)
- Developer: [Watts Water Technologies, Inc](https://appshunter.io/developer/844447908)
- Category: Utilities, Education
- Price: Free
- Rating: 5.00/5 from 6 App Store ratings
- Age rating: 4+
- Requires: iOS 9.0 · 74 MB
- Released: 2020-01-30
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pvi-optisize/id1496654912/reviews.md

## What is PVI OptiSize?

You will be guided through four simple steps:

1) Facility Type: Select the type of facility for your project.

2) Fixture Count: Enter the amount of fixtures within your facility.

3) System Tuning: Tweak system inputs to view total performance and find out which products best suit your project.

4) Summary: View a summary of your system, view recommended products, and download report.

## Key features

- Facility type selection
- Fixture count input
- System tuning for performance
- Product recommendations
- Downloadable summary report


## Frequently asked questions about PVI OptiSize

### What is PVI OptiSize used for?

PVI OptiSize is a utility app designed to help users accurately size water heaters for different types of facilities. It guides you through a step-by-step process to determine the best product for your project.

### Is PVI OptiSize free to use?

Yes, PVI OptiSize is available for free. There are no costs associated with downloading or using the core features of the application.

### What information do I need to use PVI OptiSize?

To use PVI OptiSize, you will need to know the type of facility you are working with and the total number of fixtures within that facility. You can also tweak system inputs for more precise tuning.

### Can I save or share the results from PVI OptiSize?

Yes, after completing the four steps, PVI OptiSize provides a summary of your system and recommended products. You can download this summary report for your records or to share with others.

### What devices is PVI OptiSize compatible with?

PVI OptiSize is compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's mobile operating system.

### How often is PVI OptiSize updated?

The latest version of PVI OptiSize is 1.0.6, which was last updated on October 30, 2020. Users can expect updates to maintain compatibility and potentially add new features over time.

### What is the age rating for PVI OptiSize?

PVI OptiSize has an age rating of 4+. This indicates that the app is suitable for users of all ages, with no mature content.

### Who developed PVI OptiSize?

PVI OptiSize was developed by Watts Water Technologies, Inc. They are a company specializing in water solutions.

## Version history (last 5 releases)

### 1.0.6 — 2020-10-30

Small UI tweaks

### 1.0.4 — 2020-04-21

Added support for Brigade.

### 1.0.3 — 2020-03-05

Minor UI changes.

### 1.0.2 — 2020-02-04

Minor UI Tweaks

### 1.0.1 — 2020-01-30

Minor UI Tweaks

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## More apps by Watts Water Technologies, Inc

- [Watts Pro](https://appshunter.io/ios/app/watts-pro/id844447905)
- [Syncta](https://appshunter.io/ios/app/syncta/id1173673034)
- [AERCO Edge](https://appshunter.io/ios/app/aerco-edge/id1397513585)
- [FloPro-MD](https://appshunter.io/ios/app/flopro-md/id1437827733)
- [tekmarNet](https://appshunter.io/ios/app/tekmarnet/id1455265964)

All apps by Watts Water Technologies, Inc: https://appshunter.io/developer/844447908

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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 2026-06-10.*