Welcome to the Rod Miller family. We provide HVAC service you can trust to be in your business whether or not you're there. Rod Miller, Inc. offers: Heating repair Air conditioning repair HVAC maintenance Commercial HVAC We help you create and maintain a healthy indoor climate in your home or commercial building. We've proudly been providing service to Maryland and Washington, DC since 1962. Whether you own a home or commercial building, whether you need installation or service, our goal is to provide you with the support you need to remain comfortable indoors. Our promise, always, is that you can trust your home or business to us.