not for too long
Only if the outside unit is a heat pump.
You should not breed your female until she has had her 2nd or 3rd heat.
They usually go back into heat 4-6 months after delivering. 6 months after she came in heat last, it never changes even if she has puppies, she should come in heat when her puppies are around 4 months old.
You could have puppies with birth defects when the parents mate with the puppies. If you plan on keeping them all together, you should neuter the puppies. The mum and dad will be interested in each other the next time the mum goes into heat.
Only if she mated successfully whilst in heat.
She should be spayed at least one month after she comes out of heat, and at least one month before she is expected to come back into heat. That typically leaves a three month window of opportunity.
I have had two female pugs and , it has gone into heat at 6-12 months, our vet recommended not before 1 should a dog have puppies, this is because the puppies would be to big for the mom....
By her 2nd heat.
You can breed when she has her 2nd heat.
No not until her next heat
No
If the basement has ventilation to outside, the answer is yes. Heat loss from the pipes will escape outside the house. If the basement is closed to the outside then no, the pipes need not be insulated. Any heat lost from the pipes will provide some heating to the basement that will rise into the house.