With the development of micro and mesoscale electronics, photonics and optoelectronics, the heat management in such small scales are becoming important. In several emergent areas such as quantum computing and communication, satellite controlling and sensing, the overall refrigeration or cooling rate is having a priority over the energy consumption efficiency. Beyond the passive heat draining, active solid-state refrigeration and cooling based on the Peltier effect have been attractive. We are here suggesting the materials system of carbon nanotubes. By incorporating the energy sensitivity of transport into the thermopower investigation, we have found that the active refrigeration and cooling rates are better than or as least similar to the thermal conductivity of commonly used functional metals, especially at and above the room temperature. The performance is also robust against the fluctuation of band gap introduced during the batch synthesis of carbon nanotubes. Furthermore, the p- and n-type regions have similar performance in thermoelectric refrigeration and cooling, which is providing convenience for the ultimate device design and manufacturing.