Sub-Zero builds the refrigerator that outlasts two cheaper replacements and keeps strawberries fresh a week longer than anything else, but you're paying $12,000 to $20,000 for the privilege. When something breaks, the bill matches the ambition: sealed system failures run over $4,000, and even replacing a door gasket requires professional help and half a day. Buy this if you're building a luxury kitchen where a 17-year lifespan and best-in-class food preservation justify the premium; skip it if you need reliable cold storage without the used-car price tag.
Thermador sells you a Bosch 800 with upgraded handles and a luxury badge at double the price, banking on the pro aesthetic and dual-compressor engineering. The problem is concrete and expensive: evaporator fans and compressors fail on units just past their two-year warranty, leaving the fridge compartment at 50°F while repair quotes run $475 to $4000, and Consumer Reports ranks Thermador below mid-range brands for reliability. Buy this only if you need the built-in look for a high-end kitchen remodel and can budget for specialist service calls, or if you find a steep open-box discount that cushions the risk. Everyone chasing appliance longevity should walk.