Sunroom: 7 Star General Contracting is a sunroom specialist. We have a vast knowledge of all types of custom sunroom projects. We can even transform a screened porch into a sunroom. Contrary to popular belief, a sunroom is not just limited to certain weather conditions. Even if it's cold outside, the warm rays of the sun can be harvested to provide the right kind of temperature for the sunroom. When the weather is warm, opening windows allow cross ventilation to keep the sunroom cool. You can also add heating and air conditioning to ensure the perfect temp all year long.