--- title: Aspen HYSYS Reviews meta_title: 'Aspen HYSYS Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 45 reviews by the users' company size, role or industry to find out how Aspen HYSYS works for a business like yours. aggregate_rating: rating_value: 4.5 review_count: 45 scale: '5' date_modified: '2026-09-22' parent_category: name: Oil and Gas url: https://www.g2.com/categories/oil-and-gas ---

Aspen HYSYS Reviews & Product Details

Value at a Glance

Averages based on real user reviews.

Perceived Cost

$$$$$

User Insights

Average based on 45 real user reviews.

Perceived Cost

$$$$$
Mehulkumar S.
MS
Mehulkumar S.
Graduate Engineering Trainee
Mid-Market (51-1000 emp.)
"Best Chemical Simulator for process"
4.5/5
What do you like best about Aspen HYSYS?

Aspen HYSYS is a versatile process simulator. You can simulate any chemical process with different cases. It has a wide range of thermodynamic packages and compounds are available for different needs. The specialized processes like amine, HF, and hydrogen correction can be embedded in the process to get more accurate results. Different types of optimization, sensitivity analysis, Thermophysical data, and curves can be obtained for a wide range of process parameters. Recycle option is there which is not available in aspen plus. Unit operations for refineries are available in HYSYS. Crude assay and petroleum characteristics are more relevant than other simulators. Energy optimization, capital cost estimators, and Pinch analysis can be done with just one click. The help menu is very useful to get the theory behind various options available. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

The user interface and selection of thermodynamic packages are very confusing. One needs to be an expert in thermodynamics before doing any modification. For custom packages, primitive computer language like FORTRAN is used. Unlike open-source simulator DWSIM, Calculation steps and equations are hidden from the user. Review collected by and hosted on G2.com.

Mohit R.
MR
Mohit R.
Production Engineer
Enterprise (> 1000 emp.)
"Great experience"
5/5
What do you like best about Aspen HYSYS?

All possible scenarios are available and interface is too simple Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

As such there is nothing to dislike in Aspen environment Review collected by and hosted on G2.com.

Johann C.
JC
Johann C.
Process Engineer
Mid-Market (51-1000 emp.)
"Staple Process Engineering Software"
4/5
What do you like best about Aspen HYSYS?

Well guided step by step usage. Simple to use. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

Hydraulics is not too powerful/smart. Large models can be slow to run. Review collected by and hosted on G2.com.

Jay M.
JM
Jay M.
Graduate Engineering Trainee
Enterprise (> 1000 emp.)
"Review Regarding Aspen HYSYS Software"
5/5
What do you like best about Aspen HYSYS?

Aspen HYSYS Software is very useful software provided by Aspen Tech and it is best for simulation purposes especially for oil and gas processes. With this software, I do simulation on heat exchanger, distillation, compressor, absorber, pump, reactor and so many things and you can also find the property of the liquid and gas mixture at various parameters. Also, we can do the sensitivity analysis and optimization. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

Everything is fine about the Aspen HYSYS software, but sometimes it gives runtime errors and also takes a long time to run the simulation. Review collected by and hosted on G2.com.

Meetkumar P.
MP
Meetkumar P.
Graduate Engineering Trainee
Mid-Market (51-1000 emp.)
"Best software for Designing and Simulation"
5/5
What do you like best about Aspen HYSYS?

I liked the most the designing and simulation of process plants and doing heat and mass balance for distillation column Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

Sometimes I am facing issue in simulation to drag and drop of equipment Review collected by and hosted on G2.com.

Sumit S.
SS
Sumit S.
Senior Process Engineer
Mid-Market (51-1000 emp.)
"ASPEN HYSYS is one of the Best Simulation software"
5/5
What do you like best about Aspen HYSYS?

Aspen HYSYS interface is very user-friendly. It is effortless to integrate with other tools such as Aspen EDR, MS excel. It has an extensive component database. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

It needs some improvement in the visual representation part. Limited options are there to modify text inserted. Review collected by and hosted on G2.com.

Verified User in Oil & Energy
UO
Verified User in Oil & Energy
Enterprise (> 1000 emp.)
"Review on experience with Aspen Hysys till date"
4.5/5
What do you like best about Aspen HYSYS?

Aspen Hysys provides best and easy interface to simulate processes used in refinery operation. Along with that it also helps in sensitivity analysis and properties generation used in modelling. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

Many times it abruptly stops working after not responding page and also the backup is not available thereafter. Run time error faced during simulation is also cumbersome at times. Review collected by and hosted on G2.com.

Verified User in Higher Education
UH
Verified User in Higher Education
Small-Business (50 or fewer emp.)
"Aspen Hysis, batter simulation, if basics are clear then it will be very helpful to understand"
4.5/5
What do you like best about Aspen HYSYS?

Aspen-HYSIS is effective for steady state simulation mainly for petroleum products Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

It is difficult and vast compared to other simulation software Review collected by and hosted on G2.com.

Rustam H.
RH
Rustam H.
Геолог
Small-Business (50 or fewer emp.)
"Hysys is the best product for modeling petroleum product preparation systems"
4.5/5
What do you like best about Aspen HYSYS?

The program is by far one of the best oil and gas treatment programs. Has a wide functionality that allows more detailed and accurate modeling of the oil product preparation system. Simple and intuitive interface Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

creation and preparation of data on the composition of oil and gas Review collected by and hosted on G2.com.

Chandra C.
CC
Chandra C.
I
Small-Business (50 or fewer emp.)
"I used this software to study of "TEG" loss in the process of Gas Dehydration Unit."
5/5
What do you like best about Aspen HYSYS?

That was my first time when I went to use it. Due to its simple layout and lots of helping features I was able to make a process flow diagram easily, to do graphs and to go for analysis of designs and equipment. Its working efficiency with high accuracy makes me more positive to use it again and again. Review collected by and hosted on G2.com.

What do you dislike about Aspen HYSYS?

It's expensive nature of Cost nothing else. Its powerful interface, features and benefits make it more fascinating. Review collected by and hosted on G2.com.

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