High-Efficiency Wall Hung Gas Boiler 24kw and 32kw

• Customization: Available
• After-sales Service: 1% Spare Part
• Warranty: 3
• Model NO.: HBG-K10B
• Brand: Doublemax
• Installation: Wall-Mounted
• Power (W): 24kw
• Exhaust Way: Forced Exhaust Flue
• Gas Heater Type: Gas Heating
• Ignition: Electronic Pulse Ignited
• Heating Area: up to 249 FT²
• Material: Metal
• Overheat Protection: Yes
• Power Source: Gas
• Use: Bathroom, Bedroom, Living Room
• Energy Efficiency Rating: Class a
• Heat Efficiency: Over 90%
• Display Type: LED
• APP-Controlled: No
• Voltage (V): 110-220V
• Transport Package: 760X480X320 84
• Specification: 660X410X253
• Trademark: oublemax
• Origin: China
• HS Code: 841810
• Production Capacity: 200000/Year
• Package Size: 760.00cm * 480.00cm * 320.00cm
• Package Gross Weight: 30.000kg

Product Description

Home use 24kw gas boiler 

Our wall-hung gas boiler integrates home heating and domestic hot water supply. Designed for durability, high efficiency, and user convenience, it is ideal for apartments, villas, and residential buildings. This is a non-condensing type, using atmospheric or fan-assisted combustion, suitable for markets with stable gas supply.

Specification

Product Advantages:

Product Advantages:
Dual Function: Central heating + domestic hot water
 Compact Design: Easy installation, space-saving
Intelligent Control: Constant temperature, LED display
Safe Operation: Multiple protection systems
Flexible Customization: Panel design, logo, color, and language available
Suitable for wide range of residential applications

Application:
Residential homes
Apartments
Hotels
Villas

Certifications:
CE / ISO9001 / ERP (if applicable)
Gas appliance approval available for specific markets

Key Configurations

1. High Energy Efficiency

2. Constant Temperature Control

3. Compact & Space-Saving Design

4. Reliable Safety Protection

5. Quiet Operation

6. Fast Heating & Stable Output

7. User-Friendly Interface

8. Compatible with Different Gas Types

right elevation

left elevation

front elevation

Technical Specifications

(Custom configurations available upon request.)

Parameter	Description
Rated Heat Input	18 / 20 / 24 / 28 / 32 kW (optional)
Rated Heat Output	Same as input (non-condensing type)
Gas Type	0.8–1.2
Heating Temperature Range	6.2
Domestic Hot Water Output	9.5
Hot Water Temperature Range	35°C – 60°C (adjustable)
Efficiency	≥ 88%
Ignition System	Automatic electric ignition
Display	LED Digital Display
Safety Functions	Overheating protection, Anti-dry burn, Flame failure protection, Overpressure protection, Anti-freeze
Noise Level	≤ 45 dB
Power Supply	AC 220V / 50Hz
Exhaust Type	Forced Exhaust / Balanced Flue
Installation	Wall-mounted
Dimensions	780*480*320
Net Weight	28 – 34 kg (depending on model)
Housing Material	White powder-coated steel panel (optional stainless steel)

Packaging & Delivery

Packaging Details
Our wall-hung gas boilers are packed with export-grade protection to ensure safe and damage-free delivery during long-distance transportation.
Each unit is individually boxed using a high-strength corrugated carton, reinforced EPE foam, and anti-vibration internal structure, effectively preventing impact, compression, and moisture during handling.

Standard Package Includes
Wall-hung gas boiler unit
Mounting bracket & installation kit
User manual (English)
Warranty card

Packaging Features
Export-grade 5-layer corrugated carton
High-density foam for corner and side protection
Anti-drop, anti-vibration, moisture-resistant
Clear printing of model label, barcodes, and handling marks
OEM logo and design packaging available on request

Delivery Details
Lead Time: 25–35 days after deposit and artwork confirmation
OEM / ODM: Supported
Loading Port: Shenzhen / Nansha (or as requested)
Supply Ability: 5000 units per month (can be updated based on your capacity)

	20KW	24KW	28KW	32KW	40KW
NW (kg)	26	27	34	35	39
GW (kg)	29	30	37	38	42
Product size (mm)	660X410X253	660X410X253	740*410*305	740*410*305	740*460*330
Packing size (mm)	760X480X320	760X480X320	840*485*398	840*485*398	840*525*430

After Sales Service

1. Warranty Policy
Each unit is covered by a 1-year warranty from the shipment date (or 18 months from production date, whichever comes first).
Within the warranty period, free spare parts will be provided for any product defects caused by manufacturing or material issues.
The warranty does not cover damages caused by incorrect installation, misuse, or external factors (such as unstable gas supply, voltage surge, or natural disasters).
 
2. Technical Support
We offer 24-hour online technical support via email, video call, or instant messaging.
Detailed installation and operation manuals, wiring diagrams, and troubleshooting guides are included with each order.
Remote technical training for distributors or local technicians can be arranged upon request.
 
3. Spare Parts Supply
Continuous spare parts supply is guaranteed for at least 5 years after shipment.
Common parts (PCB board, gas valve, fan, sensors, etc.) are available from stock for quick replacement.
A spare parts catalog with codes is provided to assist in ordering and maintenance.
 
4. OEM / ODM Support
Customization services include logo printing, control panel design, packaging, and user manual language localization.
We can also provide technical drawings, test reports, and component documentation for partner factories and distributors.
 
5. Customer Feedback & Service Response
All customer inquiries and complaints will be replied to within 24 hours.
If a confirmed quality issue occurs, we will offer replacement parts or compensation according to our warranty terms.
Regular feedback follow-up is conducted to ensure customer satisfaction and product reliability.
 
6. Installation & Maintenance Assistance (Optional)
For bulk orders, on-site installation training or video demonstration can be provided.
Routine maintenance recommendations are included in the manual to ensure safe and long-term operation of the boiler.

Company Profile

Zhongshan doublemax  Co., Ltd.

  Our company has equipped with hundreds of advanced production equipment and a number of modern high-tech production lines. We have anindependent technology research and development center, a testing center and a laboratory. Our company has metal stamping, molding, spraying and electronics workshops and strictly controls product quality.

Our products sale to china market and all over the word, specially Europe,south east of Asia ,middle east,South America and North  Africa.
According to the buyers needs,more than 50% products passed CE,CB, ETL,COC,SASO,EMC,KC certification.Meanwhile,our company had got through ISO9001: 2008 quality system standards,ISO9001:2008/SDO14001 International Management System standards. We also the TUV Rhineland-site certification audits,and the GMC high-integrity enterprise. In 2018,We have been awarded the honorary title of national high-tech enterprise of China.
Over the past 21 years, with the concerted efforts of all employees, our products have won many honors and patents.Our products have been well received by customers at home and abroad.

We firmly believe that under the trust of customers, under the support of the government and the concerted efforts of our team, we will be able to create more and more  healthy & green, more and more  intelligent & satisfy  products for more families.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support

Gas water heater 
Gas stove 
Range hood 
Gas boiler 
Microwave oven

FAQ

1. What is your main product line is made?                                                      

We mainly produce Built-in Stove (stainless & glass), Built-in Ceramic Stove, Built-in Induction Stove, Range Hood,gas water heater,gas boiler

2.Your factory or trading company?

We are a factory, we provide OEM&ODM services.

3.What is your main market?

Our main market is Middle East, South America, Europe, Russia, Africa and Some of regional.

4.You have the ability to do independent research and development?

Our engineering department has 10 people, we have the research and development capabilities. We also collect regularly each customer feedback, product improvement and new product development. We also hold monthly new product launches.

5.If I have a question I would like advice on how to contact you?

You can SNS platform or directly through major inquiry and send e-mail to  consult us.

6.What will you provide services?

If you do not mind, you can tell us the following information, you are factories, wholesalers, purchasing, dealers, consumers or do engineering, design, or home. We can provide a detailed explanation to you. You will also patiently answered every question. We have established a customer complaint side, if you are not satisfied with our service, you can directly tell us via e-mail or telephone. We answer all questions for you. Thank you