For　residential　building,　air-to-air　heat　exchanger　for　heat　recovery　using　micro　heat　pipes　array　(MHPA)　were　designed,　constructed　and　tested　under　normal　temperature　operating　conditions.　The　heat　exchanger　is　constituted　by　4　rows　of　MHPA　and　each　row　has　12　heat　pipes.　A　heat　exchange　has　been　developed　and　constructed　for　investigating　the　performance　of　the　heat　exchanger　for　heat　recovery.　The　experiment　is　conducted　in　the　enthalpy　potential　laboratory.　In　summer　conditions,　temperature　of　indoor　air　maintain　24　degrees　C,　and　the　outdoor　temperature　increased　from　27　degrees　C　to　40　degrees　C.　In　winter　conditions,　temperature　of　indoor　air　maintain　20　degrees　C,　and　the　outdoor　temperature　increased　from　9　degrees　C　to　14　degrees　C.　The　air　face　velocity　range　was　from　0.64　to　1.50　m/s.　According　to　the　experimental　results,　the　air　velocity　and　temperature　difference　between　indoor　and　outdoor　air　significantly　influenced　the　effectiveness　of　the　MHPA　heat　recovery　units.　Additional,　the　studies　on　the　influence　of　inclination　angle　on　the　MHPA　performance.　Finally,　by　comparing　this　heat　exchanger　recovered　energy　and　the　energy　consumption,　the　result　indicate　that　it　has　great　potential　for　energy　savings,　and　also　has　a　great　application　prospect　in　residential　building.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.