# Caleffi Pipe Sizer vs Heating & Cooling HVAC Pro+

The clearest difference is review sentiment: Heating & Cooling HVAC Pro+ at 100% against Caleffi Pipe Sizer's 50%. Heating & Cooling HVAC Pro+ also leads on update cadence (every 6 weeks vs every 7 months) and ratings volume (45 vs 1). Caleffi Pipe Sizer's advantage is rating (5.0 vs 4.8) and monetization model (free vs ad-supported). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Caleffi Pipe Sizer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Heating & Cooling HVAC Pro+ has 45 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Caleffi Pipe Sizer's written reviews are positive against 100% of Heating & Cooling HVAC Pro+'s, so the app with the better star average is not the one people write more warmly about.

Caleffi Pipe Sizer ships an update every 7 months, Heating & Cooling HVAC Pro+ every 6 weeks. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Caleffi Pipe Sizer | Heating & Cooling HVAC Pro+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458/reviews)** | [4.8 (45 ratings)](https://appshunter.io/ios/app/heating-and-cooling-hvac-pro-plus/id1356690113/reviews) |
| Number of ratings | 1 | **45** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 44 MB | 164 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [Watsco, Inc.](https://appshunter.io/developer/510378878) |

## What reviewers say

### Caleffi Pipe Sizer

[App page](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458)

This application assists hydraulic and HVAC professionals in accurately sizing water or air pipes. It calculates pressure drops and offers a modern, intuitive interface for precise system design on the go.

**Highlights:** Accurate water/air pipe sizing, Pressure drop calculation, Customizable technical parameter calculations, Extensive material and configuration library, Modern and intuitive interface, Enhanced performance

**Features:** macOS Compatibility

**In-app purchases:** none


### Heating & Cooling HVAC Pro+

[App page](https://appshunter.io/ios/app/heating-and-cooling-hvac-pro-plus/id1356690113)

This app provides HVAC professionals with quick access to product information, tools, and support. It allows users to check pricing, availability, find locations, and manage warranty claims. Features include a PT calculator, duct calculators, and a flashlight tool for on-site work.

**Highlights:** View pricing and order status, Real-time product availability, Find branch locations and hours, Scan barcodes for product lookup, Submit warranty claims, Access spec sheets and diagrams, Live technical support chat, Inventory replenishment tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Caleffi Pipe Sizer free?

Caleffi Pipe Sizer is free to download, with no in-app purchases.

### Is Heating & Cooling HVAC Pro+ free?

Heating & Cooling HVAC Pro+ is free to download, with no in-app purchases.

### Which has better reviews, Caleffi Pipe Sizer or Heating & Cooling HVAC Pro+?

Caleffi Pipe Sizer is rated higher. Caleffi Pipe Sizer averages 5.0 out of 5 from 1 ratings, while Heating & Cooling HVAC Pro+ averages 4.8 from 45 ratings.

### Do Caleffi Pipe Sizer or Heating & Cooling HVAC Pro+ have ads?

Neither Caleffi Pipe Sizer nor Heating & Cooling HVAC Pro+ shows ads.

### Which is updated more often, Caleffi Pipe Sizer or Heating & Cooling HVAC Pro+?

Caleffi Pipe Sizer ships an update every 7 months, and Heating & Cooling HVAC Pro+ every 6 weeks. Most recently, Caleffi Pipe Sizer was updated on October 2, 2026 and Heating & Cooling HVAC Pro+ on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*