最近请了个licensed contractor 给换了个evaporator coil,
做的时候说的是五年保修, labor and part.
现在做完了,就请他写一个,
类似:
( Contractor name )安装了xx model, 的 evaporator coil on ( date) at ( address)
home owner: ( my name)
price: ( )
warranty: 5 years labor and parts.
这样行么。