Quick take
Small offices can use countertop RO or a high-capacity dispenser. Larger teams usually benefit from plumbed bottleless filtration with predictable service intervals.
Small offices
A countertop RO appliance can work well for a few people, especially when permanent plumbing is undesirable.
Larger offices
High daily volume makes plumbed dispensers or under-sink systems more practical than pitchers or small feed tanks.
Hot and cold dispensing
Coway-style purifiers and premium countertop units can combine treatment with hot/cold dispensing, reducing the need for separate appliances.
Recurring cost
Compare cartridge life and annual cost per user rather than only equipment price.