For overseas importers and HVAC brand owners, receiving defective or leaking water heaters can cause massive financial loss and damage to your brand. Understanding a factory's quality assurance (QA) protocol is vital before placing bulk orders.

1. High-Pressure Hydrostatic Leak Test (1.2 MPa):

•  Every inner tank undergoes continuous high-pressure water testing to verify weld integrity and structural strength before insulation assembly.

2. High-Voltage Dielectric Insulation Test:

•  Evaluates the electrical isolation between live heating components and the outer chassis, guaranteeing protection against electrical shocks under high moisture conditions.

3. Air-Tightness Gas Pressure Inspection:

• Submerging pressurized assembled tanks into testing basins to detect micro-cracks or microscopic fitting leaks.

4. Thermostat Dry-Burn Protection Calibration:

•  Verifies that the thermal cut-out safety switch automatically trips if power is engaged without water in the tank, preventing element burnout.

5. Packaging Drop & Vibration Testing:

•  Simulates rough ocean transport and local courier handling to ensure the outer carton and high-density EPS foam protect the product during transit

ANTO Electric operates under ISO 9001-certified manufacturing protocols, achieving a factory defect rate of less than 0.1%.

Plan a virtual or in-person factory audit to see our quality control in action.

[Schedule a Consultation with ANTO](https://www.antogaswaterheater.com/).