To　reduce　the　power　consumption　of　air　conditioners　used　for　cooling　telecommunication　base　stations,　the　thermosyphon　heat　exchanger　unit　is　presented　for　the　base　station　heat　dissipation　assisting　with　the　air　conditioner.　An　air　to　air　thermosyphon　heat　exchanger　unit　is　designed　and　tested.　Results　indicate　that　the　heat　exchanger　unit　works　well　with　good　heat　dissipation　performance　under　the　testing　conditions.　The　temperature　effectiveness　of　the　unit　can　reach　50%,　and　the　energy　efficiency　ration　(EER)　reaches　10.9.