An apparatus and method for moderating the environment of a pet shelter is provided. The apparatus may include a climate control device which may be attached to the pet shelter in order to regulate the temperature and environment within the pet shelter. The apparatus may also include a photoelectric control element electrically connected to the climate control device and operable based on the ambient light input from outside the pet shelter. The apparatus may regulate the environment of the pet shelter based on the ambient light outside of the pet shelter.