An integrated adsorption heat pump with zeolite absorbent, which contained an adsorber and evaporator/condenser in the same vessel, was evaluated. At evaporation/condensation temperatures of 293 K, an adsorption temperature of 303 K, a desorption temperature of 363 K and a cycle time of 150 s, an output thermal power of 3.27 kW and a COP of 1.37 were obtained against theoretical power of 4.35 kW and COP of 1.64. The COP decreased with shortening the adsorption/desorption cycle time, because the rates of generation of adsorpton and latent heat were slow, and the sensible heat of adsorbent and heat exchanger was dominant immediately after switching the cycle. The output thermal power and COP decreased at low ambient temperature due to a reduction of evaporation performance, and at high supplied water temperature due to a decrease of an amount of adsorbed water.