GERMAN POOL GPNB-6SSL vs GPU-6SSM Comparison

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GPNB-6SSL

GERMAN POOL GPNB-6SSL 23 Litres Rapid Fast Flow Electric Water Heater – Shower Type

HK$3,689 ~~HK$5,480~~

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GPU-6SSM

GERMAN POOL GPU-6SSM 22Litres Rapid Fast Flow Electric Water Heater (Central Type)

HK$4,189 ~~HK$6,180~~

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Side by side

GPNB-6SSL GPU-6SSM

GPNB-6SSL is a shower-type heater with a 23-litre / 6-gallon capacity; GPU-6SSM is a central storage-type heater with a 22-litre / 6-gallon capacity and can supply multiple outlets.
GPNB-6SSL measures 640 × 420 × 210 mm; GPU-6SSM measures 740 × 355 × 175 mm, making it taller, narrower and shallower. Dimensions are height × width × depth.
GPNB-6SSL has a working pressure of 0 MPa and testing pressure of 0.5 MPa; GPU-6SSM has a working pressure of 0.6 MPa and testing pressure of 1.2 MPa.
GPNB-6SSL weighs 17 kg empty and 40 kg with a full tank; GPU-6SSM weighs 16.2 kg empty and 35.7 kg when full.
GPNB-6SSL is white; GPU-6SSM has a black mirror finish and a Japanese-made stainless steel inner tank.

Item	GPNB-6SSL	GPU-6SSM
Heater type	Shower type	Central storage type; supplies multiple outlets, such as a shower and basin
Capacity	23 litres / 6 gallons	22 litres / 6 gallons
Rated power	3,000 W
Heating elements	Two independent 3 kW heating elements	Not specified
Inner tank design	Double inner tank design	Patented double inner tank design
Inner tank material	Not specified	Japanese-made stainless steel
Heating system	Patented, smart-controlled alternate heating system	Rapid heating technology using the patented double inner tank design
Rapid heating claim	Approximately 5 minutes to reach 40°C	Shower-ready in 5 minutes
Hot water supply duration	Up to 40 minutes at 40°C	Not specified
Energy-saving claim	Potential savings of up to 70% compared with traditional 6-gallon electric water heaters, under specific flow and temperature-rise conditions	Water and energy savings stated; savings percentage not specified
Automatic temperature control	✅ Detects water temperature changes and optimizes heating	❌ Not specified
Dynamic thermal circulation	✅ Rapidly heats running water through thermal circulation	❌ Not specified
Voltage	220 V
Electric current	13.6 A	15 A
Power supply phase	1 phase
Energy efficiency label	Grade 1	Not specified
Dimensions (H × W × D)	640 × 420 × 210 mm	740 × 355 × 175 mm
Packing dimensions (H × W × D)	330 × 730 × 505 mm	Not specified
Net weight	17 kg	16.2 kg
Weight with full tank	40 kg	35.7 kg
Gross weight with packing	20 kg	Not specified
Working pressure	0 MPa	0.6 MPa
Testing pressure	0.5 MPa	1.2 MPa
Water resistance rating	IPX4
Safety certifications	IEC 60335-1, IEC 60335-2-21
Water inlet position	Bottom
Water outlet position	Bottom
Colour / finish	White	Black mirror finish
Included showerhead	Dedicated water-saving aerated showerhead
Metal shower hose included	❌ Not specified	✅
Adjustable showerhead holder included	❌ Not specified	✅
Whole-unit warranty	1 year
Electrical parts warranty	2 years
Inner tank warranty	Permanent warranty	Lifetime warranty
Inner tank warranty limitations	Covers inner tank replacement only. Additional charges for testing, transportation and labour may apply.

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