Several　renewable　energy　sources　based　on　composite　heat　pump　technology,　which　has　been　gaining　increasing　attention,　are　combined　for　application　in　building　areas　to　obtain　high　operation　efficiency　and　maximize　energy　saving.　In　this　study,　two　kinds　of　air-water　dual-source　composite　evaporators,　namely,　evA　and　evB　(a　new　type),　are　proposed　and　air-water　dual-source　composite　heat　pump　(AWSHP)　systems　with　evA　and　evB　are　established.　The　AWSHP-evA　and　AWSHP-evB　systems　can　be　run　in　different　modes,　including　air　source　heating　mode　(ASHM),　water　source　heating　mode　(WSHM),　and　air-water　source　heating　mode　(AWSHM).　The　AWSHP-evB　system　has　several　advantages　over　the　AWSHP-evA　system,　such　as　better　coefficient　of　performance　(COP),　wider　ambient　temperature　range　for　the　efficient　operation　of　AWSHM,　and　several　different　defrosting　modes.　A　comparison　of　the　experimental　results　obtained　under　different　test　conditions　shows　that　COPWSHM　of　AWSHP-evB　can　be　enhanced　by　6.3%　to　9.8%,　whereas　COPASHM　of　AWSHP-evA　and　AWSHP-evB　are　identical.　Meanwhile,　COPAWSHM　of　AWSHP-evB　system　can　be　enhanced　by　8.8%　to　13.3%　in　test　conditions　when　hot　water　temperature　is　increased　from　18　+/-　1.0　degrees　C　to　51　+/-　1.0　degrees　C.　(C)　2017　Published　by　Elsevier　Ltd.