What is the material of the heat exchanger?

The heat exchanger is made of 100% pure copper with tin painting for oxidation resistance.

What are the main markets for this product?

Our main markets include the Middle East, South America, Europe, Russia, Africa, and Southeast Asia.

Can the heater work with low water pressure?

Yes, optional zero water pressure valves are available for low or zero water pressure scenarios.

High-Efficiency 13L Wall Mounted Gas Water Heater for Showers

Name: High-Efficiency 13L Wall Mounted Gas Water Heater for Showers
Brand: Zhongshan Doublemax Electrical Appliances Co., Ltd.
SKU: 1911757535

Guangdong, ChinaZhongshan Doublemax Electrical Appliances Co., Ltd.

US$42.00

1,000 Pieces

Sample price:US$55.00/piece.Request sample

Product profile

Customization

Available

Capacity

Gas Type

Natural Gas

Model NO.

HRG-21

Type

Flue Type

Energy Efficiency Grade

Two

Interior Material

Copper

Installation

Outdoor Standard Installation

Housing Material

Stainless Steel

Control Mode

Mechanical Edition

Usage

Bathroom, Kitchen

Certification

ISO9001, CCC

Transport Package

Carton

Specification

720

Trademark

Doublemax

Origin

Carton

HS Code

841460

Production Capacity

20000/Year

Key features

Fast Hot Water Supply: Hot water comes out in 5 seconds with automatic electrical pulse ignition.

Comprehensive Safety Protection: Features flameout, over water pressure, anti-dry combustion, and anti-freezing protection.

High-Quality Heat Exchanger: 100% pure copper heat exchanger with tin painting for superior oxidation resistance.

Flexible Capacity Options: Available in 6L, 8L, 10L, 12L, and 13L capacities to suit different needs.

Energy Saving Design: Winter-summer switch option allows for gas saving and efficient energy usage.

Multiple Certification: Certified with CE, SASO, COC, CCC, and CB for global market compliance.

OEM & ODM Services: Customization services available including different colors and specific configurations.

Low Water Pressure Support: Optional zero water pressure valves available for low or zero water pressure scenarios.

Company profile

Zhongshan Doublemax Electrical Appliances Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2009-05-01 CertifiedNearest Port: Shenzhen Port, Guangzhou Port, Zhongshan PortAverage Response Time: ≤4.29h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryZhongshan Doublemax Electrical Appliances Co., Ltd. is a China-based limited company established in 2017, operating from Guangdong with 44 employees and a 6,000 m² manufacturing plant. It produces a broad range of kitchen and water-heating appliances, operates more than 10 production lines, and exports to multiple regions. The supplier reports ISO9001:2008 quality-system certification, TUV Rheinland site-audit passage, and various product certifications, while its management-system certification field is recorded as NIL. Innovation evidence includes a stated 36-engineer R&D team, experienced personnel, and appearance-design patents, although another record lists six total R&D engineers. Export activity reportedly began in 2009, but the available transaction evidence includes only one buyer-linked transaction in 2025. After-sales service, financial credibility, and customization capability cannot be conclusively assessed from the provided information.

Supplier typeThe supplier is identified as a combined business and limited company based in China, specializing in electrical and consumer electronics. Its stated products include range hoods, gas and electric water heaters, stoves, ovens, induction cookers, and related parts.

CertificationsThe supplier reports passing TUV Rheinland site certification audits and holding ISO9001:2008 quality-system certification; it also states that more than 50% of products passed CE, CB, COC, SASO, EMC, and KUCAS certification. However, supplier management-system certification is separately recorded as NIL, so the evidence supports product and quality certifications but not comprehensive management certification.

R&D capabilityThe supplier states that its R&D team includes 36 engineers with more than 10 years of high-end kitchen-appliance experience and that it holds multiple appearance-design patents. A separate record lists six total R&D engineers, creating an internal inconsistency, but the slices still provide explicit evidence of dedicated R&D and patent activity.

Production capacityThe supplier reports a 6,000 m² manufacturing plant, 44 employees, more than 10 production lines, and a broad appliance portfolio. Its stated manufacturing scope and infrastructure indicate established production capability, although actual capacity by product, utilization, and delivery performance are not provided.