# Engineering Thermodynamics

6 Hacker News commenters recommended Engineering Thermodynamics and 0 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** A free, clear engineering thermodynamics textbook with answers to all its problems. Its PDF is large at 40MB and its focus is fairly narrow.

## What people warn about

- Large 40MB PDF file (1 comments): "You might want to look at optimising the PDF, it's sitting at 40MB right now." ([source](https://news.ycombinator.com/item?id=47912015))
- Narrow focus on thermodynamics (1 comments): "So it's fairly narrow focus, but that is not necessarily a bad thing." ([source](https://news.ycombinator.com/item?id=47912150))

## Alternatives hackers recommend

- [The Feynman Lectures on Physics by Feynman, Leighton and Sands](https://hackerapproved.com/p/feynman-lectures-on-physics.md): 34 recommend
- [Course of Theoretical Physics by Landau and Lifshitz](https://hackerapproved.com/p/course-of-theoretical-physics.md): 8 recommend
- [Computational Physics (2nd Edition) by Giordano and Nakanishi](https://hackerapproved.com/p/computational-physics.md): 7 recommend
- [General Relativity by Robert Wald](https://hackerapproved.com/p/general-relativity.md): 6 recommend
- [Gravitation by Misner, Thorne and Wheeler](https://hackerapproved.com/p/gravitation.md): 5 recommend

## Where to get it

- [See price on Amazon](https://www.amazon.com/s?k=Free+Textbook+on+Engineering+Thermodynamics&tag=hackerapprove-20) (affiliate link)

## Cite as

Hacker Approved, "Engineering Thermodynamics", https://hackerapproved.com/p/free-textbook-on-engineering-thermodynamics/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).