Comparison

HVAC Pipe Sizer vs Heating Pipe Size

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

Head to head
About

HVAC Pipe Sizer

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

Highlights
  • Liquid pipe sizing
  • Hydronic system calculations
  • Input flow, head loss, diameter, or velocity
  • Calculate fluid flow and head loss
  • Supports various liquids and pipe materials
  • English and metric unit options
  • Email results
Features
Read full description

The "HVAC Pipe Sizer - Liquid" application allows you to quickly size a simple pipe system by inputting a number of piping and liquid properties, including hot and chilled water (hydronic). This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 You can specify the total fluid flow in GPM (or L/s) and one of either unit head loss (ft/100ft), pipe internal diameter (inches) or fluid velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total head loss. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either unit head loss or fluid velocity parameters to derive the calculated fluid flow and other remaining properties. You can specify additional parameters such as the type of liquid, various properties of the liquid, 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. The app allows you to email inputs and results once you have completed an analysis. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 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

Heating Pipe Size

Features
Read full description

Estimate required pipe diameter of a closed hydronic heating or cooling system in an instant and calculate pressure drop to determine required circulation pump characteristics (flow and head). Easy to use, quick and accurate results. Enter the required heating or cooling output and water flow and return temperatures. Choose pipe material. The recommended pipe diameter is already there, presented as a standard DN. Additionally, choose the recommended or a custom pipe diameter and specify pipe section length and fittings. Results include water flow rate, velocity, pressure drop and pressure drop per 100 m of straight pipe and can be used to determine the parameters of a circulation pump. ## Features: - Simple to use; - Suitable for hydronic (water-based) heating and cooling systems; - Suitable for a large range of heating and cooling outputs; - Predefined pipe materials; - Water temperature range from 1 to 99 ΒΊC; - Completely independent from any manufacturers; - No login needed, no data connection needed; - No data collection; - No subscriptions, one-time purchase only; - Very quick calculation with no delays; ## Possible uses of the application: - Quickly estimate required pipe diameter when designing a hydronic (water-based) closed heating or cooling system. - Quickly determine circulation pump requirements (flow and head), whether it be a new system or a replacement pump. ## Notes: - It is recommended to calculate every section of the piping system separately and additionally check the whole system pressure drop. - The application is only useful for calculations of hydronic (water based) closed heating or cooling systems. Other systems and media are not supported. - Only metric units are supported. - The application, while accurate, is not meant as a complete replacement of specialized software for heating and cooling system design. The application doesn't require data connection. It doesn't require and doesn't collect any personal data. It also doesn't contain third-party ads or code. Also: no in-app purchases, no subscriptions.

Screenshots

HVAC Pipe Sizer4 screens
Heating Pipe Size4 screens

Verdict

The call

The clearest difference is in-app purchases: Heating Pipe Size at none against HVAC Pipe Sizer's 1. HVAC Pipe Sizer's advantage is update cadence (every 6 months vs every 15 months) and chart position (#196 vs unranked). On ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

HVAC Pipe Sizer costs $4.99 and Heating Pipe Size $5.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Heating Pipe Size asks for nothing beyond the download.

UpkeepUpdate frequency

HVAC Pipe Sizer ships an update every 6 months, Heating Pipe Size every 15 months. Both last shipped on September 9, 2026.

Scorecard5 real differences Β· 4 level
HVAC Pipe Sizer versus Heating Pipe Size: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerHeating Pipe Size
Price$4.99 β€” better$5.99
Positive reviews71.4% of reviewsβ€”
Update frequencyEvery 6 months β€” betterEvery 15 months
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationPaidβ€”
Best chart rank#196 β€” betterβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.6 β€” better26.0
Further details β€” not scored
Size16 MB1 MB
Age rating4+4+
DeveloperCarmel Software CorporationSebastjan Valic

In-app purchases

1 purchases

HVAC Pipe Sizer

One-time1
  • HVAC Equipment Locator$9.99
None

Heating Pipe Size

No in-app purchases

Questions

Is HVAC Pipe Sizer free?
HVAC Pipe Sizer costs $4.99, and also offers in-app purchases.
Is Heating Pipe Size free?
Heating Pipe Size costs $5.99, with no in-app purchases.
Do HVAC Pipe Sizer or Heating Pipe Size have ads?
Neither HVAC Pipe Sizer nor Heating Pipe Size shows ads.
Which is updated more often, HVAC Pipe Sizer or Heating Pipe Size?
HVAC Pipe Sizer ships an update every 6 months, and Heating Pipe Size every 15 months. Most recently, HVAC Pipe Sizer was updated on September 9, 2026 and Heating Pipe Size on September 9, 2026.

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