An experimental study of the cooling performance of a compact TE air conditioner with a DEC system has been performed. Under the test conditions used here, the suitable operating condition was 4.5 A electrical current supplied to the TE modules and hot-side air mass flow of 0.025 kg/s. The corresponding cooling capacity is 74.5 W with COP of 0.52 and cold air temperature of 24.4C. The technology developed here increases the COP of thecompact TE air conditioner by about 20.9% (at 4.5 Aelectric current).