# HVAC Psychrometric Plus — user reviews

> 10 indexed App Store user reviews of HVAC Psychrometric Plus by Carmel Software Corporation, rated 3.00/5 from 2 ratings.

- Source: https://appshunter.io/ios/app/hvac-psychrometric-plus/id348669031/reviews
- App overview in markdown: https://appshunter.io/ios/app/hvac-psychrometric-plus/id348669031.md
- Rating breakdown: 5★ 1 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (10 lowest-rated)

### 1/5 — Engineer

*2016-08-12*

Does not work. 72/46 is not -7.6 dew point. How to get refund is the ??

### 1/5 — Don't buy

*2015-08-30*

This app will give you false readings I can calculate better and more accurate than this app if you need one then go to Ashrae HVAC Psychrometeric chart apps and download  that it will cost you $20.00 but you pay for what you get !!!!!!!!!! This app is crap DONT but this app.😖

### 1/5 — Now very Good

*2012-07-20*

Answer Not really Good...

### 4/5 — 간단하게 사용하긴 좋으나 LT버전과 큰 차이가 없네요...

*2011-01-26*

SI 단위계 지원되고 사용도 간편해서 좋습니다. 이메일로 보내는 기능도 유용할것 같구요.

근데 LT버전과의 차이가 Mixed 상태 표시해주는건데, 

저는 이것보다는 Inlet 과 Outlet 상태값 넣고 

열교환량, 제습량을 계산해주는게 있었으면 더 유용하지 않았을까 싶네요.

Mixed 자주 쓰실게 아니라면 LT버전이 나을듯 합니다. 

그래도 두가지 상태값 동시에 볼수있다는 점에서는 LT버전보다는 낫네요. : )

### 4/5 — Great app but...

*2010-02-20*

I've used this app many times in my hvac class and all the values are correct other than enthalpy.  So be sure to compare that value to the actual chart because it is way off.  I sent a thing to the developers so hopefully the issue can be resolved.  The odd thing is that the value for enthalpy when using the mixed stream is correct.

### 5/5 — Works great!

*2019-06-20*

Easy to use and accurate. Use it every day.

### 5/5 — R&D Use

*2012-04-30*

Four senior R&D execs in our company use it and have never had a problem in F or C. Easy conversion and more flexible than most other apps. There is a small error near 0degF and tiny inconsistencies near saturation but these would only be noticed by a scientist. Great app. Is it available for Excel?

### 5/5 — Great app for mechanical engineering students

*2010-05-17*

It's a very useful app when doing homework instead of looking
for the results in the psych charts and especially when it comes to
interpolation. I haven't run into any inaccuracies, yet. Also, I like
that I can calculate for different elevations and barometric
pressures. I highly recommend this app.

### 5/5 — Beats using those cardboard psych calculators

*2010-05-09*

I have one of those cardboard Vaisala psych calculators, kind of like a ductulator but for psych. calcs. Anyway, I've been using it for years and it was ok. Now, that I've downloaded this app, I much prefer this: it's quick, let's me specify a large # of input parameters, and instantly displays the results. Good stuff.

I also like the fact I can calculate for high elevations since I live in Denver.

Great work!!!

### 5/5 — Works great out in the field for HVAC diagnostics

*2010-05-04*

I am doing a lot of diagnostics these days with cooling coils, etc. I really need to do lots psych calcs to determine what the wet-bulb and relative humidity values are. This app is awesome in the field for doing this. Also, I like the mixed-air function for those more complicated jobs. Great work.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-07.*