Answer
$\dot{Q}_H=0.417\ kW$
$COP=2.2$
Work Step by Step
$\dot{Q}_H=\dot{W}_i+\dot{Q}_L$
Given $\dot{Q}_H=4800\ kJ/h,\ \dot{Q}_L=3300\ kJ/h$
$\dot{Q}_H=1500\ kJ/h=0.417\ kW$
$COP=\dot{Q}_L/\dot{W}_i$
$COP=2.2$
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