I'm not sure where you live but the payback on a modern refrigerator is likely within a year due to electricity consumption costs. Old refrigerators are crazy inefficient.

My 30 year old refrigerator uses about $9 worth of electricity per month. If I bought one which was twice as efficient, I’d save about $55 a year. That’s a 20 year payback (neglecting lost investment opportunity) for a $1100 model, plus the replacement hassle. So, I expect to run it until it breaks.

A year sounds crazy optimistic. The new fridge would have to lower the power bill by $1000. That's as much as some households spend on all electricity in a year.