Replaced a leaking, much older 6 gallon Atwood water heater with this new 6 gallon electronic ignition model. Evidently, I made an error in which unit I needed - wanted the combination electric/gas model but got the gas model instead. No problem. I needed hot water NOW. My brother helped me to install it and I could not be happier! I am now thoroughly enjoying a very ample supply of hot water! Also, extremely pleased that unit arrived about three business days after placing order.