Welcome to talotekniikkaa.fi!
Please note that the calculators are still in development, so there may be deficiencies or errors. By using the calculators, you accept that you do so at your own risk.
HVAC Calculators
Welcome to use our calculators! On this site, you will find various useful tools for HVAC design and sizing.
Check out these calculators:
- Rainwater Calculator - For rainwater system sizing
- Makeup Air Valves - For sizing makeup air valves
- Duct Velocity - For calculating air velocity in ducts
- Excess Heat Management - For calculating airflow needed to remove excess heat
General Tools
The site also offers other useful tools:
- Unit Converter - Easily convert between different units
- ALT Codes - Useful special characters for HVAC design
- Convert PNG images to WebP format for smaller file sizes
- Blog - Current articles about building services and other topics
Games
Refresh your mind by playing:
Try these retro games:
- Asteroid - Asteroid - Classic space game where you dodge and shoot asteroids or sewer pipes :)
- Tetris - Tetris - Popular block stacking game
Updates
2025-12-06
Image Editor Updated
Added collage mode to the image editor - combine multiple images into one. Drag, scale and arrange layers. Also new "Fixed Frame" crop tool and comprehensive user guide.
2025-12-05
Spot Electricity Now
New tool for tracking electricity spot prices in real-time. See today's, yesterday's and tomorrow's electricity prices with 15-minute accuracy.
2025-12-05
SähköNyt Android App
The site's first Android app released! Download the SähköNyt app and track electricity spot prices conveniently on your phone.
2025-11-29
Fluid Velocity Calculator added to the Water & Plumbing section.
Fluid Velocity Calculator simplifies pipe sizing by providing a quick estimate of the flow velocity and confirming whether the flow remains within recommended limits. Predefined pipe materials, such as copper and black steel, can be selected directly from the menu. The tool supports planning for both domestic water and heating systems.
2025-11-29
Sewer Chaos launched!
Get the sewer line hooked to the municipal tie-in point before Grandpa hits the porcelain—speed is high and the plumber’s feeling the pressure.