What Is the New Water-Efficiency Standard for Purifiers? How IoT Purifiers Help Meet It

After the new water-efficiency standard (GB 34914-2021) took effect, the efficiency label became mandatory for water purifiers, turning "water saving" from a selling point into a compliance baseline. What is the purifier water-efficiency grade, and how do IoT purifiers help meet it? This article explains the standard and the role of IoT capabilities in efficiency management.

1. What Is the New Water-Efficiency Standard

The standard "Minimum allowable values of water efficiency and water efficiency grades for water purifiers" (GB 34914-2021), in force since July 1, 2022, has three core elements:

• Three efficiency grades, based on clean-water production rate (clean water as a share of total intake):
  • Grade 1 >= 60% (highest efficiency)
  • Grade 2 >= 55%
  • Grade 3 >= 50% (market-access limit)
• Mandatory efficiency label: purifiers fall under efficiency-label management, requiring labeling and registration
• Market access: products with a rate below the Grade 3 limit cannot be produced or sold

In short: if a purifier fails the efficiency requirement, it cannot even be listed. Efficiency is now a hard gate.

2. Why Purifier Efficiency Matters

Purifiers produce "concentrated water" (wastewater) during operation; at low production rates, large volumes of tap water are wasted:

• Water conservation: higher production rates mean less wasteful discharge
• Consumer cost: high waste-water ratios raise effective water costs
• Regulatory direction: the efficiency label lets consumers see a product's water-saving level at a glance, creating market selection pressure

This is why purifiers were included in the third batch of efficiency-labeled products.

3. Requirements for Purifier Companies

The new standard creates three requirements for equipment companies:

• Design to standard: build a clean-water production rate of Grade 3 or above from the R&D stage, with Grades 1-2 as selling points
• Label and register: apply efficiency labels and complete registration per the labeling measures
• Ongoing compliance: mass-produced units must match their labels in actual efficiency, subject to inspection

Compliance is not "passing a one-time test" - it is stable, provable efficiency on every unit. This is exactly where IoT capability comes in.

4. How IoT Purifiers Help Meet the Requirement

The Youan IoT purification IoT solution turns efficiency management from "one lab test" into "verifiable on every unit":

1. Real-Time Production-Rate Monitoring

Flow sensors capture intake and output volume, and the platform computes each unit's clean-water production rate in real time (see the data dashboard).

2. Optimized Flushing and Waste-Ratio Adjustment

With remote control, flushing strategy and waste-water ratio are tuned to water quality and membrane condition, cutting wasteful discharge and holding production rate high.

3. Filter Management Linked to Efficiency

Clogged filters and aged membranes drag down production rate. IoT filter-expiry alerts and TDS monitoring prompt timely replacement, preventing efficiency from sliding with usage.

4. Data Trails for Compliance

Production rate, water usage, and flushing records are fully logged, letting companies produce per-unit efficiency data for quality control and regulatory review.

5. Recommendations for Purifier Companies

1. At design: make the efficiency grade a hard target, aiming for Grades 1-2
2. At production: sample in-market units via IoT data to ensure they match labels
3. At operation: use remote flushing and filter management to keep high efficiency over the unit's life
4. At channel: market "high efficiency + IoT-verifiable" as a differentiator

Summary

The new water-efficiency standard turns efficiency from a "plus" into a "ticket to the market". For purifier companies, meeting the standard is the baseline, and an IoT purifier makes compliance designable, verifiable, and sustainable through real-time monitoring, optimized flushing, filter management, and data trails. To add IoT efficiency management to your purification products, feel free to contact us and explore the Youan purification IoT solution.