Mid-sized corporations are moving into the water purifier market long seen as saturated. They aim to secure recurring sales and move away from business structures centered on seasonal appliances that are sensitive to economic cycles. Some also believe that if they manage crises such as disputes with consumers, they can establish the business as a cash-flow generator.

Coway Icon water purifier. /Courtesy of Coway

On the 12th, according to mid-sized corporations, home appliance company WINIX will launch a new "compact ice water purifier." It is an attempt to expand its lineup to water purifiers following seasonal appliances such as air purifiers, dehumidifiers and window-type air conditioners.

The domestic water purifier market is seeing competition among Coway, which holds the No. 1 market share, LG Electronics, SK intellix and CUCKOO Homesys.

In Korea, the water purifier market has established a rental (lending)-centered structure and is considered a home appliance segment with stable profitability. Because the model generates recurring sales once subscribers are secured, it has a strong character as a cash-flow business.

Although the penetration rate of water purifiers in Korea has already reached a high level, there is replacement demand centered on ice-making models and premium products. With a core parts supply chain in place, releasing products is not difficult if a company like WINIX secures its own brand and distribution network.

Recently, corporations have introduced premium products highlighting hot water control features or improved ice-making performance to bolster profitability.

Coway, the industry's No. 1, reported in its business report that the average selling price of water purifiers over the past three years was about 1.1 million to 1.23 million won. Based on Coway's overall operating margin of about 15%, the operating profit per unit over the full rental contract period (five years) is estimated at about 350,000 to 500,000 won. Coway recorded about 4.5 trillion won in sales last year from rentals alone—including water purifiers, air purifiers and bidets—accounting for 90.9% of its total revenue.

SK Magic water purifier advertising model Byeon Woo-seok. /Courtesy of SK intellix

The industry sees water purifiers as a driver for performance improvement, despite the market entering a mature stage, because of the recurring revenue structure and replacement demand.

Home appliance company PASECO produced water purifiers under original equipment manufacturing (OEM) and original design manufacturing (ODM), boosting its production performance from about 20.5 billion won in 2023 to about 74.5 billion won last year. By expanding the scale of water purifier production, it posted a profit last year and escaped a two-year stretch of losses.

Back-calculating the supply unit price based on the business report puts it at about 500,000 to 700,000 won. Considering the typical revenue structure of home appliance OEMs, per-unit gross profit is estimated at around 70,000 to 100,000 won, but scaling up through mass production is cited as the key competitive edge.

As many home appliance corporations enter the water purifier market, the ability to handle consumer disputes and maintain service quality is emerging as the variable that will shape the market landscape. Recently, consumer disputes have steadily occurred over removal fees or remaining charges after mandatory usage periods end. The quality of after-sales services, such as filter replacement and hygiene management, is also becoming more important.

An industry official said, "The water purifier market is already being reorganized around replacement demand, making it difficult to grow the business through simple sales or subscriber expansion alone," and added, "Because long-term customer relationships must be maintained, the competitive landscape will solidify around corporations that have brand trust and maintenance capabilities so that complaints about service quality or cancellation procedures do not accumulate."

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