About
Welcome!
I am HVAC Engineer (M.Sc.) Petri Tynkkynen and the creator of this website. The site was born from the need for various building services design tools and calculators.
I work daily with HVAC design and supervision, and I have noticed that many routine calculations and information searches take unnecessary time. That's why I decided to create this website, where all the necessary tools are in one place - easily accessible.
Site Goals
Practical Tools
Provide easy-to-use calculators and tools that save time and reduce errors.
Knowledge Sharing
Share knowledge and experiences about building services. Help students and newcomers to the field learn.
Free and Open
All tools are free and freely available. No registration, no ads - just useful tools.
Site Statistics
15
Tools and Calculators
32
Radiators in Database
14
Makeup Air Valves
1,6M
Products in Tukkuri
Technology
The site is built using:
- PHP 8.x
- MySQL
- Bootstrap 5
- JavaScript
- HTML5 & CSS3
- Responsive Design
The site is optimized for speed and usability. All calculators work directly in the browser without the need for external services.
Send Feedback
Your feedback is important! Share your opinion, suggest new features, or report bugs. I will respond to all messages as soon as possible.
Disclaimer
The site's calculators and tools have been made carefully, but they are still under development. You use the tools at your own risk. I always recommend verifying critical calculations with other methods and following applicable regulations and standards.