I live in Colorado where it gets very cold during the winter. I am buying a greenhouse to try to grow vegetables year round. However, with the cold winter temperatures I will need to heat the greenhouse. My plan is to build a large compost pile next to the greenhouse, run a hose through the compost pile in a loop, by which the water inside of the hose will heat up. Then I will bring the water into the greenhouse and heat it. Do you think it will work?