![Granab-with-underfloor heating](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/04/Granab-med-golvvärme.jpg?media=1697889320)
Underfloor heating installed in the Granab system
Granab systems with non-deformable girders of either steel or wood is not affected by temperature variations, which is a major advantage in avoiding subsequent floor construction problems.
Most available floor heating systems can be installed in combination with Granab Subfloor Systems, which provide significant benefits.
When choosing waterborne underfloor heating, two alternative primary systems are installed in Granab Subfloor Systems 3000N and 7000N:
See below
Underfloor heating in 22 mm chipboard flooring with grooves.
![example-of-chipborad flooring](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/04/exempel-med-golvspånskiva.jpg?media=1697889320)
![underfloor heating-in-chipboard flooring](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/04/golvvärme-i-golvspånskiva.jpg?media=1697889320)
Underfloor heating in sealed floor heating units
![Example-of-underfloor heating-in-sealed units](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/04/exempel-med-golvvärmekassett.jpg?media=1697889320)
![Underfloor heating-in-sealed-floor heating-units](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/04/golvvärme-i-golvvärmekassett.jpg?media=1697889320)
Our systems
![Granab_System_3000N](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/03/Granab_System_3000N.png?media=1697889320)
Granab subfloor system 3000N
For adjustable heights from 30 to 140 mm, excluding floor covering.
![Granab_System_7000N](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/03/Granab_System_7000N.png?media=1697889320)
Granab subfloor system 7000N
For adjustable heights from 50 to 420 mm, excluding floor covering.
![8000N25 for audio side CLT](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2022/02/8000N25-for-ljudsida-CLT-300x120.png?media=1697889320)
Granab Subfloor system 8000W
![Granab_System_9000N](https://usercontent.one/wp/www.granab.se/wp-content/uploads/2021/03/Granab_System_9000N.png?media=1697889320)
Granab subfloor system 9000N
For adjustable heights from 70 to 420 mm, excluding floor covering.