Guide to Obtaining RoHS Test Reports for Electric Water Heaters in China
Date：2026-06-30 09:59:37 Classification
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Guide to Obtaining a RoHS Test Report for Electric Water Heaters in China
Electric water heaters are among the products listed in the "Catalogue of Electrical and Electronic Products Subject to Restriction of Hazardous Substances (First Batch)" and are subject to the nationally unified conformity assessment system. The following explains the process from three perspectives: legal basis, testing requirements, and application procedures.
I. Applicable Laws and Regulations
| Laws/Standards | Explanation
| "Administrative Measures for the Restriction of Hazardous Substances in Electrical and Electronic Products" (2021) | Main RoHS regulation in China, effective March 1, 2022
| GB/T 26125-2011 / IEC 62321 | Hazardous Substance Testing Methods (split into GB/T 39560 series)
| GB/T 26572-2011 | Limits for Restricted Substances in Electrical and Electronic Products
| Catalogue of Conformity Management Products | Electric water heaters are included and must pass the national conformity assessment.
II. Restricted Substances and Limits
A total of 10 hazardous substances are controlled, and each homogeneous material of the electric water heater must be tested:
Heavy metals (4 items): Lead (Pb) ≤0.1%, Mercury (Hg) ≤0.1%, Cadmium (Cd) ≤0.01%, Hexavalent Chromium (Cr⁶⁺) ≤0.1%
Brominated flame retardants (2 items): PBB, PBDE both ≤0.1%
Phytaldehyde esters (4 items): DEHP, BBP, DBP, DIBP all ≤0.1%
⚠️ Key components to watch: Heating element (lead/cadmium), thermostat (mercury), PCB board, plastic shell (brominated flame retardants, phthalates), power cord (DEHP and other plasticizers), inner tank enamel/coating, magnesium rod, display screen (if any).
III. Processing Procedure
1. Preparation Stage
Disassemble the product to the homogeneous material level (generally disassembling to obtain 30-80 testing units)
Identify the material of each component (metal, plastic, ceramic, coating, etc.)
Collect the component BOM list and supplier material declarations
2. Selecting a Testing Institution
Preferably choose a laboratory with both CMA and CNAS accreditation
Recommended Institution: Dezewei Testing CNAS Registration No.: L8083
3. Sample Submission and Testing
Provide 3-5 finished products or samples of key components
The laboratory analyzes each item according to the GB/T 39560 series standards
Issuing a test report (clearly specifying the test values and judgments for each homogeneous material)
4. National Conformity Assessment (Key Step)
For electric water heaters listed in the catalog, a test report alone is insufficient. The following are also required:
Entrust a nationally recognized certification body (such as CQC) to conduct conformity assessment.
Submit an application form, test report, technical documents, and production consistency control requirements.
Factory inspection (if necessary)
Issuance of a nationally recognized RoHS certification certificate and affixing of the conformity assessment mark.
5. Marking and Declaration
For products listed in the catalog: Affix the nationally recognized conformity assessment mark upon leaving the factory and at the time of sale.
Also provide a declaration form regarding the restriction of hazardous substances.
IV. Cycle and Cost Reference
| Item | Reference Value
| Testing Cycle | 5-7 working days (depending on the number of components)
| Testing Cost | Approximately 800~3000 RMB (based on the number of homogeneous material units)
V. Common Rectification Directions
If the test fails, common exceedances and solutions:
1. Lead and Cadmium exceedances → Replace with lead-free solder and stainless steel; adjust the heating element supplier.
2. Hexavalent Chromium exceedances → 3. Plating changed to trivalent chromium passivation or chromium-free passivation.
4. Excessive brominated flame retardants → Use halogen-free flame retardant formulations for plastic parts.
5. Excessive phthalates → Use phthalate-free plasticizers (such as TPU, TPE) for power cords/sealants.
VI. Precautions
Reports are usually valid for 5 years, but reassessment is required after standards or regulations are updated.
Major product design changes (such as replacing heating elements or control boards) require retesting.
It is recommended to establish a green supply chain procurement system simultaneously to control hazardous substances at the source.
In addition to RoHS, electric water heaters sold domestically must also meet CCC, energy efficiency (GB 21519), and hygiene and safety (water-contact components) requirements.
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