Heating and A/C for dog houses in America

[Black Wolf]

I'm expecting replies only from people knowledgeable about such things. No, keeping the dogs inside the house for prolonged periods unattended is not an option for me, a single working person. They need outdoors for exercise and toilet use. The German shepherd also has to guard the yard. I will not pay for pet sitting services and my rule is dogs are not allowed unattended inside the house unless they are puppies penned up to prohibit having run of the home.  An outdoor kennel keeps my home from getting messed while away during the day.