| Warmth in a house inuslation and cold bridges | 
| Roof window |   | ||
| Good visible, the frame of the window is the worst cold bridge. So is at a window the u-value for the glass and the complete window listed. | |||
| External wall temperature |   | ||
| Left from the window is an internal wall, right from the window the front door. At an older not so good insulated house would be the external wall colder. | |||
| Morning sun in winter |   | ||
| No effect has the deep standing morning sun in winter on the white wall.The higher temperature above is by the floor heating. | |||
| Refrigerator |   | ||
| The refrigerator works like a heat pump. The compressor pushes the coolant with high pressure into the condenser on the rearside. The condenser becomes warmer. | |||