Navisizer

Name: Navisizer
Rating: 2.4 (26 reviews)
Author: Navien

By: Navien

Productivity

Features & Capabilities

NaviSizer is designed to assist with sizing of domestic hot water heating systems with Navien NPE Series tankless water heaters.

For residential applications, NaviSizer offers system sizing, calculation of operating cost and savings, and provides a comprehensive output to be used as a job spec.

For commercial applications, NaviSizer uses ASHREA Hunter Curve calculations to size a broad range of applications. Both tankless and tankless with storage solutions are offered along with a comprehensive system spec that can be saved, printed, or emailed.

User Growth & Download Statistics

App

By:

Navien

Rating:

2.40

(26)

Version:

3 Last updated: 2024-04-29

Version code:

865418895

Creation date:

2017-12-26

Compatible devices:

Size:

20.75MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 332,658 ▼ 1,306

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Navien

Apple Apps Store

https://apps.apple.com/us/app/navisizer/id1327385997

Website:

https://www.navieninc.com/

User Reviews

Navisizer is praised for sizing accuracy using real conditions and the Hunter curve and for being simple to use, with applicability to residential and commercial projects. However, multiple reviews complain about registration hurdles, blocking forms, and CAPTCHA issues; privacy concerns about collecting or sharing potential client information; several UI/UX bugs that prevent data entry; and a perception that the tool does not reliably size or influence recommendations. Overall, the app shows potential but is hindered by usability, privacy, and reliability issues.

Pros

Accurate sizing using real conditions and the Hunter curve for tankless units.
Simple, accurate, and easy to use.
Applicable to both residential and commercial projects.

Cons

Registration and form validation issues that block access (required fields blocking registration, CAPTCHA-related input problems).
Privacy concerns about collecting or sharing potential client information to use/access the sizer.
UI/UX bugs and data-entry problems (fields not accepting input, keyboard closing unexpectedly, generally buggy UI).
Not helpful for sizing or producing reliable recommendations (perceived as not sizing anything or being pointless).

Recent reviews

This APP uses real conditions and the Hunter curve to accurately size tankless units for both my residential and commercial projects. I’m quite happy with the results.

by ro*****, 2022-07-06

Filled out the required fields, but not accepting it.

by RB*****, 2020-09-09

I am a homeowner. I am interested in this product and was hoping this app could connect me to either a licensed retailer or someone qualified to install it. I found neither. When they ask you for different information about your use of water, flow rate, gas bills, etc, they use too many acronyms and don’t explain what they are or how a layman can calculate any of it. They don’t explain the different products either or what the differences are. They need to go back and rethink this app for people who aren’t plumbers or engineers.