Comparison

HVAC Pipe Sizer vs Installer App

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

This utility app helps engineers quickly size high-pressure gas piping systems. Input flow, pressure, and pipe properties to calculate diameters, velocity, and equivalent length. Supports English and metric units with built-in tables for various pipe materials.

Highlights
  • High-pressure gas pipe sizing
  • Input flow, pressure, and pipe parameters
  • Calculate exact/nominal diameters
  • Determine velocity and equivalent length
  • Supports English and metric units
  • Includes pipe fitting tables
  • Universal app for iPhone and iPad
Features
Read full description

The "HVAC Pipe Sizer - Gas High" application allows you to quickly size a simple high pressure (> 1.5psi) gas piping system by inputting a number of piping and gas properties. This is now a universal app that works on both the iPhone and iPad and sizes the screen size accordingly. You can specify the total gas flow in ft^3/hr (m^3/hr), the upstream pressure (psig or kPa), and one of either downstream pressure (psig or kPa), pipe internal diameter (inches) or gas velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total pipe equivalent length. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter, the upstream pressure, and one of either downtream pressure or gas velocity parameters to derive the calculated gas flow and other remaining properties. You can specify additional parameters such as the type of gas, various properties of the gas, the pipe material type, the total length of pipe, quantities for up to 11 different types of pipe fittings, and much more. You can also choose to display values in either english or metric units. This application includes built-in pipe fitting equivalent length and nominal pipe sizing tables for a wide variety of pipe material types and diameters. This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. You can also manually input exact values. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 This 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. We also offer the following additional applications for the iPhone/iPad: 1. HVAC Duct Sizer 2. HVAC Pipe Sizer – Gas Low Pressure 3. HVAC Pipe Sizer - Gas High Pressure 4. HVAC Pipe Sizer – Liquid 5. HVAC Pipe Sizer – Steam 6. Steam Tables 7. Psychrometric Plus 8. Psychrometric LT 9. HVAC Pipe Sizer Plus 10. HVAC Pipe Sizer Gas Plus 11. HVAC Toolkit 12. HVAC Toolkit Ultimate 13. HVAC Residential Load Calcs 14. HVAC Load Plus 15. HVAC Equipment Locator 16. ASHRAE Duct Fitting Database 17. ASHRAE 62.1 Ventilation Load Calcs 18. HVAC Psych HD 19. HVAC ResLoad-J 20. HVAC Residential Load Calcs HD

About

Installer App

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

Highlights
  • Radiator Presetting
  • Product Finder
  • My Projects (Cloud-based)
  • Hydronic Balancing
  • Flow/Pressure Calculator
  • Floor Heating Tools
  • Burner Converter
  • Magnetic Tool
Features
Read full description

The Danfoss Installer app is an all-in-one digital toolbox that helps plumbers, heating and HVAC professionals, service technicians, engineers, and installers with your everyday tasks. For projects big and small, our comprehensive toolbox equips you with the latest product information, installation guides and advanced features to streamline your work, making your daily tasks easier. Simplify project management with customizable databases to track your work and pick up where you left off, anytime you need. The Danfoss Installer app offers a collection of useful tools and features: Radiator Presetting Set proper values based on valve, sensor, and radiator type, or alternatively by room size and heat loss. Get the heat emission, flow, and presetting right every time. Product Finder Search and access comprehensive product information, documentation, and details. Download Danfoss product documentation directly in the app. My Projects Make project management easier by creating a list of your clients and jobs, saving contact and building information, calculating system properties, and presetting for radiator and underfloor heating. Cloud-based, My Projects allows you to save everything in one spot for easy overview and fast access across all your devices. Hydronic Balancing Determine accurate system heat output with precise flow calculations. Tailor settings to valve type, handle position, and measured pressure. Flow/Pressure calculator Calculate, convert, or verify pressure, flow, power, and temperature (values or units). Floor heating Specify circuit lengths and calculate presetting for your floor heating manifolds. Select floor heating pipe type and dimensions, define heat loss, and divide rooms into circuits. Burner Converter Modify burner components and find spare parts in a matter of seconds, while keeping an overview of product updates and alternatives. Magnetic Tool Test solenoid valve coils quickly and easily. If the wheel rotates, your valve is good to go. Timer Replacement Select the appropriate timer replacement for a Danfoss or third-party unit. Installation guides are available as well. Feedback Your input matters, and we're committed to continuously improving Installer App to meet your needs. If you encounter a bug or have a feature suggestion, please use the in-app feedback function available in Settings. Alternatively, you can reach us via email at coolapp@danfoss.com. Danfoss Climate Solutions At Danfoss Climate Solutions, we engineer energy-efficient solutions to help the world get more out of less. Our innovative products and solutions enable a decarbonized, digital, and more sustainable tomorrow, and our technology supports a cost-efficient transition to renewable energy sources. With a strong foundation in quality, people, and the climate, we drive the energy, refrigerant, and food system transitions needed to achieve climate goals. Read more about us at www.danfoss.com. Terms and Conditions apply for use of the app.

Screenshots

HVAC Pipe Sizer4 screens
Installer App4 screens

Verdict

The call

The clearest difference is review sentiment: HVAC Pipe Sizer at 100% against Installer App's 53%. HVAC Pipe Sizer also leads on rating (5.0 vs 3.0). Installer App's advantage is price (Free vs $4.99) and update cadence (every 5 weeks vs every 8 months). On ratings volume, ads, in-app purchases and device support 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

Installer App is free to download; HVAC Pipe Sizer costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HVAC Pipe Sizer holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 100% of HVAC Pipe Sizer's written reviews are positive against 53% of Installer App's.

UpkeepUpdate frequency

HVAC Pipe Sizer ships an update every 8 months, Installer App every 5 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 5 level
HVAC Pipe Sizer versus Installer App: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerInstaller App
Price$4.99Free — better
Rating5.0 (3 ratings) — better3.0 (7 ratings)
Positive reviews100.0% of reviews — better53.3% of reviews
Number of ratings37 — better
Update frequencyEvery 8 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size17 MB90 MB
Age rating4+4+
DeveloperCarmel Software CorporationDanfoss A/S

Customer experience

HVAC Pipe Sizer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Installer App

All ratings7 ratings
Positive42.9%
Neutral0.0%
Negative57.1%
Written reviews15 reviews
Positive53.3%
Neutral13.3%
Negative33.3%

In-app purchases

None

HVAC Pipe Sizer

No in-app purchases

None

Installer App

No in-app purchases

Questions

Is HVAC Pipe Sizer free?
HVAC Pipe Sizer costs $4.99, with no in-app purchases.
Is Installer App free?
Installer App is free to download, with no in-app purchases.
Which has better reviews, HVAC Pipe Sizer or Installer App?
HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 3 ratings, while Installer App averages 3.0 from 7 ratings.
Do HVAC Pipe Sizer or Installer App have ads?
Neither HVAC Pipe Sizer nor Installer App shows ads.
Which is updated more often, HVAC Pipe Sizer or Installer App?
HVAC Pipe Sizer ships an update every 8 months, and Installer App every 5 weeks. Most recently, HVAC Pipe Sizer was updated on October 15, 2026 and Installer App on October 17, 2026.

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