Comparison

HVAC Pipe Sizer Plus vs W

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HVAC Pipe Sizer Plus

This utility app combines three specialized pipe sizing tools for HVAC systems: liquid, steam, and gas. It offers flexible input options, unit conversions, and an equipment locator for comprehensive HVAC design.

Highlights
  • Liquid pipe sizing
  • Steam pipe sizing with steam table calculator
  • Gas pipe sizing (low and high pressure)
  • HVAC Equipment Locator
  • Slider controls for input adjustments
  • English and Metric unit display
Features
Read full description

The HVAC Pipe Sizer Plus application is a combination of three (3) of our individual pipe sizing applications including: 1. HVAC Pipe Sizer - Liquid 2. HVAC Pipe Sizer - Steam 3. HVAC Pipe Sizer - Gas Plus This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly. The "HVAC Pipe Sizer - Gas" module allows you to quickly size a simple low (less than or equal to 1.5 psi) and high (greater than 1.5 psi) pressure gas piping system by inputting a number of piping and gas properties. The "HVAC Pipe Sizer - Steam" module allows you to size a steam pipe run, and it also includes a bonus steam table calculator. The "HVAC Pipe Sizer - Liquid" module allows you to size a pipe run with many different types of liquids (or fluids), pipe material and fitting types. This app also includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 This application includes all of the great features of the individual pipe sizer apps such as the use of slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. It also allows you to specify different types of liquids, gases, pipe material types, fitting quantities, min and max ranges, and step values. Also, you can display a wide variety of English and Metric units. The "HVAC Pipe Sizer Plus" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our load calculation software and incorporated it into their leading 3D modeling software called Revit. In addition, we developed a number of customized apps for ASHRAE, DNV GL, and other organizations. We also offer the following additional apps for the iPhone and iPad: 1. HVAC Residential Load Calcs for iPhone and iPad 2. HVAC Quick Load Plus 3. HVAC Quick Load 4. HVAC Toolkit 5. HVAC Pipe Sizer – Gas Low Pressure 6. HVAC Pipe Sizer - Gas High Pressure 7. HVAC Pipe Sizer – Liquid 8. HVAC Pipe Sizer – Steam 9. Steam Tables 10. Psychrometric Plus 11. Psychrometric LT 12. HVAC Pipe Sizer Plus 13. HVAC Pipe Sizer Gas Plus 14. HVAC Toolkit Ultimate 15. HVAC Equipment Locator 16. HVAC ResLoad-J 17. HVAC Psych HD

About

W

Features
Read full description

The W-BACnet app has arrived! Upgrade firmware for LumenRadio W-BACnet devices by connecting to and upgrading the LumenRadio Gateway in the network through the app. In the Network map you will find a system overview where you can see signal strength, edit names of wireless nodes as well as seeing the health of the RS485 bus including which BACnet MS/TP address that is connected to that wireless node. You can also connect to any node in the network and change their name (up to 20 characters). The W-BACnet app requires W-BACnet firmware 3.1.1 and above, which can be downloaded from the LumenRadio support webpage. Note that you need to install FW 3.1.1 or above on the gateway from the nRF connect app to enable the functionality. It is also required to have at least 3.0.0 or above on all nodes in the network. You will need to update all nodes individually if they are on version 2.2.3. This will be the last time this is required. All future updates can be done by either this app or from the nRF connect app.

Screenshots

HVAC Pipe Sizer Plus4 screens
W4 screens

Verdict

The call

The clearest difference is price: W at Free against HVAC Pipe Sizer Plus's $13.99. W also leads on update cadence (every 3 months vs every 15 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

W is free to download; HVAC Pipe Sizer Plus costs $13.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HVAC Pipe Sizer Plus ships an update every 15 months, W every 3 months. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
HVAC Pipe Sizer Plus versus W: the parameters behind the verdict, then further details
ParameterHVAC Pipe Sizer PlusW
Price$13.99Free — better
Rating3.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 15 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615 — better
Further details — not scored
Size27 MB29 MB
Age rating4+4+
DeveloperCarmel Software CorporationLumenRadio AB

In-app purchases

None

HVAC Pipe Sizer Plus

No in-app purchases

None

W

No in-app purchases

Questions

Is HVAC Pipe Sizer Plus free?
HVAC Pipe Sizer Plus costs $13.99, with no in-app purchases.
Is W free?
W is free to download, with no in-app purchases.
Do HVAC Pipe Sizer Plus or W have ads?
Neither HVAC Pipe Sizer Plus nor W shows ads.
Which is updated more often, HVAC Pipe Sizer Plus or W?
HVAC Pipe Sizer Plus ships an update every 15 months, and W every 3 months. Most recently, HVAC Pipe Sizer Plus was updated on October 8, 2026 and W on October 11, 2026.

Other comparisons