With regular use sub-zero / wolf appliances are designed to last 20+ years. However, this doesn't mean that within 20 years that a fridge repair will not be necessary. Like any machine, maintenance is inevitable to prolong its life expectancy. The most common fridge repairs we see are defrosting issues, fridge fan issues, compressor gas top-ups and clogged drain issues which can create water built-up under the crisper drawers.