Radiation　capillary　used　as　air　conditioning　terminal　lower　the　demand　of　heating　water　temperature.　In　additional,　solar　collectors　could　also　supply　amount　of　low　grade　energy　for　heating.　Meanwhile,　solar　is　a　kind　of　renewable,　sustainable　and　environment　friendly　energy.　It　will　save　a　massive　of　conventional　energy　if　make　full　use　of　solar　for　heating.　In　this　paper,　an　experimental　system　made　of　solar　collector,　capillary　network　and　pump　was　built　up　and　tested.　According　to　thermal　load　of　experimental　room,　both　solar　collector　area　and　capillary　network　area　are　calculated,　and　circulating　water　temperature　was　analyzed　in　detail.　A　summary　is　given　about　characteristics　of　heat　storage　and　release　of　solar　collector,　indoor　air　temperature　varying　and　amount　of　energy　saving.　The　key　factors　affect　efficiency　of　collector　includes　water　volume,　water　temperature　in　tanker　and　indoor　air　temperature.　The　results　show　that　the　solar　system　can　well　meet　the　heating　demand　and　the　effect　of　energy　saving　is　very　significant　compared　to　common　heating　system.　©　(2014)　Trans　Tech　Publications,　Switzerland.