My grandmother's house has a stove with at least 5 pilot lights on it (one for each burner); I'm not sure about her water heater, gas dryer, HVAC, etc. Just bec

My grandmother's house has a stove with at least 5 pilot lights on it (one for each burner); I'm not sure about her water heater, gas dryer, HVAC, etc. Just because pilot lights aren't commonly used in the past half century doesn't mean they don't exist.