Quellennachweis für Fotos und Grafiken

1. https://de.fotolia.com/id/219801264 fotoliaInterior of the historic Saint Peter's Catholic Church along the Cabot Trail in Cheticamp, Nova Scotia © gnagel/ fotolia
2. https://de.fotolia.com/id/60085706, Interior of a modern office © zhu difeng/ fotolia
3. https://de.fotolia.com/id/187154215 Interior of new Finnish sauna, infrared panels for medical procedures, classic wooden sauna. © malkovkosta/ fotolia
4. https://de.fotolia.com/id/82239758 Arbeiter und Interieur in einer Industriehalle – Metallbau © industrieblick/ fotolia
5. https://de.fotolia.com/id/205184798 Empty room with infrared heating floor and window. Simple interior without furnish and furniture. Floor heating system. Ways of installing films under cover. Vector Illustration © VITAMIN/ fotolia
6. https://de.fotolia.com/id/152991912 フローリング© naka/ fotolia
7. https://de.fotolia.com/id/132297303 Bodenbelag: Bodenfliese, grau © finecki/ fotolia
8. https://de.fotolia.com/id/158634948 Floor heating. Young woman walking in the house on the warm floor. Gently walked the wooden panels. © Stefano Garau/ fotolia
9. https://de.fotolia.com/id/127753305 Thirty years old manual worker with wall plastering tools renovating house. Plasterer renovating indoor walls and ceilings with float and plaster. © kasto/ fotolia
10. https://de.fotolia.com/id/122330826 Fireplace hanging from ceiling in fancy home © XtravaganT/ fotolia
11. https://de.fotolia.com/id/119452927 Patch " Premium Qualität " © pico/ fotolia
12. https://de.fotolia.com/id/117990150 Home temperature, safety and environment control on mobile app. Smart phone in woman hand. Living room in background. © Stanisic Vladimir/ fotolia
13. https://de.fotolia.com/id/91839014 Button Banderole "Von Kunden empfohlen" grün/silber © Jan Engel/ fotolia
14. https://de.fotolia.com/id/61014987 Energie sparen - mit modernster Heiztechnik © abcmedia/ fotolia
15. https://picturepeople-business.de © 2018 PicturePeople GmbH & Co. KG/ picturepeople
16. ©Roy Curth