I told her that I did not keep specific information on what brand of water heater we came out and serviced in her home 2 years ago.....
I don't keep that much detail either for a service call. All that information is on the heater anyway.
If they purchased a water heater, the model number, but not the serial number is on the invoice.
However, the last water heater I purchased from the supplier, they did put the serial number on their invoice.
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