No, you're not brain dead, it's not you, and you answered the question. But -- I think something like this is more what they want.
"The associate asked the capacity of the hot water heater I have now and whether I run out of hot water frequently. The associate also asked how many people live in the house and whether we have a hot water problem when guests visit. Another question was what brand hot water heater I have and whether it is electric, gas, or propane. Also, the associate asked if gas or propane, whether I have an electric start on the heater. The associate also asked how many people shower in the morning and how many loads of laundry I usually do in a row."
That's not any different from the answer you gave but it is a little more specific.
Mary Davis Nowell. Based close to Fort Worth. Shopping Interstate 20 east and west, Interstate 35 north and south.