最近請了個licensed contractor 給換了個evaporator coil,
做的時候說的是五年保修, labor and part.
現在做完了,就請他寫一個,
類似:
( Contractor name )安裝了xx model, 的 evaporator coil on ( date) at ( address)
home owner: ( my name)
price: ( )
warranty: 5 years labor and parts.
這樣行麽。