Winter temperature

[luvdragon]

Hi, now that winter has finally arrived I was worried about the temperatures in my beardie terrarium. My heat light and heat pad are connected to the same plug so are on at the same time, but UVB light is separate. The pet shop said to leave the heat pad on 24 hours and put in infrared instead of normal spotlight so it can stay on. The temps are now about 26 in the day and 22 at night. Is this still too cold or acceptable?