With regular maintenance, durable device enclosure and non-filter element components provide a minimum of two years of service.
Key indicator
No performance degradation or component failures during laboratory testing to simulate two years of:
Daily cleaning and partial disassembly.
Regular insertion and removal of replaceable filter element(s).
Operation of valves, taps, seals.
Notes and exceptions
Low-income consumers may expect durable devices to function indefinitely with proper maintenance and repairs they can make themselves.
Other household appliances (analogues) owned by target consumers (mixers, fans, rice-cookers, etc.) operate two to three years with minimum maintenance.
Supporting evidence
Average warranty periods for equivalent household appliances (such as cookers, mixers, fans).
Average service life of equivalent household appliances.
