A plant factory is an all-year-round plant cultivation system under a controlled environment. It facilitates very efficient and stable production of vegetable that are chemical free, fresh, clean, and nutritious regardless of season or geographic location. The current drawback of the plant factory is high running cost and capital investment of huge amount. These are a major obstacle that spread to the general of the plant factory. Therefore we try to develop more compact and lower cost plant factory for home-use. In order to verify the performance, temperature control and lettuce cultivation were carried out. The result, it was shown good characteristics.