Ideally, they would prefer medium to high light without any direct sun in the afternoon. But they are very tolerant of lower light, and will survive almost anywhere there is light enough to read comfortably. In the summer when it is warm, keep them evenly moist. Water thoroughly and discard the excess water. During the winter when it is cooler and the plants aren't growing much allow the plant to dry slightly between waterings.
Chinese evergreens do well in average indoor temperatures.
If they are kept outdoors in the summer and the temperatures are higher, be sure the plants are kept moist. They do well in almost any level of humidity. To provide extra moisture, use a humidity tray or a humidifier. The plants may be misted with room temperature water. Feed them every two or three weeks through the spring and summer and once every month or so during the winter.