
Welcome!
I don't use heat lamps, even in winter because of the power went out when I'm out of town the chickens would be so used to the heat that they would freeze.
And chickens need a break from laying. If you make them lay all winter they don't have a break and it will shorten their life.
In the winter I don't clean the coop, but I add more sawdust to make insulation.
Have fun with your chickies.