Comparison

HVAC Pipe Sizer vs CE HVAC Pro+

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

Quickly size low-pressure gas piping systems by inputting flow, pressure drop, diameter, or velocity. Includes detailed gas and pipe properties, fitting data, and unit conversion.

Highlights
  • Low pressure gas pipe sizing
  • Input flow, pressure drop, diameter, or velocity
  • Calculate exact and nominal pipe diameters
  • Specify gas and pipe properties
  • Includes pipe fitting equivalent lengths
  • English and metric unit display
Features
Read full description

The "HVAC Pipe Sizer - Gas Low" application allows you to quickly size a simple low pressure (less than 1.5psi) gas piping system by inputting a number of piping and gas properties. You can specify the total gas flow in cuft/hr (CubicM/hr) and one of either pressure drop (in. wg or Pa), 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 and one of either pressure drop 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. The "HVAC Pipe Sizer - Gas Low" 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. All values can be displayed in English (IP) and Metric (SI) units. 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

CE HVAC Pro+

This app provides HVAC technicians with instant access to product information, including warranty status, inventory, and technical specifications. It offers real-time support, order tracking, and helpful calculators to streamline job management and business growth.

Highlights
  • Real-time product availability & pricing
  • Order status and notifications
  • Video/Text technical support
  • Warranty entitlement verification
  • Inventory management tool
  • Access to technical documents
  • HVAC calculators
Features
Read full description

CE HVAC PRO is 100% free for HVAC technicians and always will be. Easily check warranty entitlement, available inventory, order status, manuals, and tech specs for all the HVAC models we carry. Our mission is to deliver the quality HVAC products you need, when you need them, provide expert technical support and make it easy to grow your business. We want to be your HVAC Supplier of Choice every time. CE is the leading HVAC supplier. Making the life of the HVAC professionals easier by saving you time and money through the technologies we offer App Features Include: Real-time product availability & pricing Order status and notifications Video/Text technical support from one of our HVAC expert technical agents Quickly verify warranty entitlements FREE inventory management tool EasyStock included Access a variety of documents such as spec sheets, wiring diagrams, installation guides, and more. PT calculator, Superheat calculator, and Duct calculators Fast and easy AHRI matchups

Screenshots

HVAC Pipe Sizer4 screens
CE HVAC Pro+4 screens

Verdict

The call

The clearest difference is price: CE HVAC Pro+ at Free against HVAC Pipe Sizer's $4.99. CE HVAC Pro+ also leads on update cadence (every 3 weeks vs every 9 months) and ratings volume (1.6K vs 2). HVAC Pipe Sizer's advantage is review sentiment (100% vs 62%) and rating (5.0 vs 4.7). 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

CE HVAC Pro+ 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 4.7. That said, the two scores are not equally well evidenced: CE HVAC Pro+ has 1.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of HVAC Pipe Sizer's written reviews are positive against 62% of CE HVAC Pro+'s.

UpkeepUpdate frequency

HVAC Pipe Sizer ships an update every 9 months, CE HVAC Pro+ every 3 weeks. Both last shipped on November 6, 2026.

Scorecard6 real differences · 4 level
HVAC Pipe Sizer versus CE HVAC Pro+: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerCE HVAC Pro+
Price$4.99Free — better
Rating5.0 (2 ratings) — better4.7 (1.6K ratings)
Positive reviews100.0% of reviews — better62.1% of reviews
Number of ratings21.6K — better
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size1 MB166 MB
Age rating+44+
DeveloperCarmel Software CorporationWatsco, Inc.

Customer experience

HVAC Pipe Sizer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CE HVAC Pro+

All ratings1,595 ratings
Positive93.2%
Neutral2.6%
Negative4.1%
Written reviews58 reviews
Positive62.1%
Neutral10.3%
Negative27.6%

Bugs and requests

HVAC Pipe Sizer

Not enough reviews yet to summarise bugs or requests.

CE HVAC Pro+

Reported bugs

3 issues
  • Incorrect verification codes
  • Pricing and availability not showing up
  • Scan feature not working as expected

Requested features

4 requests
  • Improved search and filtering capabilities
  • Seamless account linking and login process
  • Enhanced warranty information and status tracking
  • Optimized app design for larger screens

In-app purchases

None

HVAC Pipe Sizer

No in-app purchases

None

CE HVAC Pro+

No in-app purchases

Questions

Is HVAC Pipe Sizer free?
HVAC Pipe Sizer costs $4.99, with no in-app purchases.
Is CE HVAC Pro+ free?
CE HVAC Pro+ is free to download, with no in-app purchases.
Which has better reviews, HVAC Pipe Sizer or CE HVAC Pro+?
HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 2 ratings, while CE HVAC Pro+ averages 4.7 from 1.6K ratings.
Do HVAC Pipe Sizer or CE HVAC Pro+ have ads?
Neither HVAC Pipe Sizer nor CE HVAC Pro+ shows ads.
Which is updated more often, HVAC Pipe Sizer or CE HVAC Pro+?
HVAC Pipe Sizer ships an update every 9 months, and CE HVAC Pro+ every 3 weeks. Most recently, HVAC Pipe Sizer was updated on November 6, 2026 and CE HVAC Pro+ on November 6, 2026.

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