 That means they can send a salesman to your home that looks like a true technician but knows next to nothing when servicing your heating and air system. His only focus is to sell you a new one. That'll never happen with Big Mountain's two-for-one rejuvenation of your heating and air system. With our two- to three-hour truly comprehensive two-part service of both your furnace and your air conditioner with a written guarantee against breakdown or the service will be free all year long. Total cost...