TGC RJW15SD(WH) vs STW13SD(S) Comparison

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RJW15SD(WH)

TGC RJW15SD(WH) White 16L/min Temperature-modulated Superslim Gas Water Heater

HK$11,107 ~~HK$13,080~~

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STW13SD(S)

TGC STW13SD(S) 12.8L/min Temperature-modulated Superslim Gas Water Heater

HK$8,892 ~~HK$10,280~~

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Side by side

RJW15SD(WH) STW13SD(S)

RJW15SD(WH) supplies 16 L/min, while STW13SD(S) supplies 12.8 L/min, both at a 25°C temperature rise.
RJW15SD(WH) is 75 mm deep and weighs 15.5 kg; STW13SD(S) is 81.6 mm deep and weighs 18 kg.
RJW15SD(WH) has 90.8% full-load and 93.5% half-load thermal efficiency; STW13SD(S) has 90.2% full-load and 94.2% half-load thermal efficiency.
RJW15SD(WH) offers 16 temperature levels and ECO mode. STW13SD(S) supports the same 35–60°C temperature range, but its number of temperature levels and ECO mode are not specified.

項目/item	RJW15SD(WH)	STW13SD(S)
Hot water supply at 25°C temperature rise	16 L/min	12.8 L/min
Dimensions (H × W × D)	584 × 350 × 75 mm	587.5 × 360 × 81.6 mm
Weight	15.5 kg	18 kg
Color	White	Silver
Gas type	Town Gas
Rated heat load / input	34.9 kW (rated heat load)	27.9 kW (rated heat input)
Measured heat load / input	36.8 kW (measured heat load)	28.6 kW (measured heat input)
Gas consumption (maximum–minimum)	125.6–13.7 MJ/hr (34.9–3.8 kW)	Not specified
Thermal efficiency at full load	90.8%	90.2%
Thermal efficiency at half load	93.5%	94.2%
Energy efficiency label	Grade 1
Temperature setting range	35–60°C
Number of temperature levels	16	Not specified
Temperature control	Automatic constant-temperature system with digital temperature control; responds to water-pressure changes	Automatic temperature control
ECO mode	✅ Reduces water flow and gas consumption with one touch	❌ Not specified
Digital temperature display	❌ Not specified	✅
Ignition	Fully automatic electronic ignition	Automatic ignition
Wired remote control	Optional; supports up to 2 wired remote controls for bathroom and kitchen installation	Optional; supported quantity not specified
Exhaust method	Power Flue Room-sealed	Fan-Assisted Room-Sealed
Minimum water-pressure requirement	Minimum operating water pressure: 10 kPa (1.5 p.s.i)	Minimum operating water pressure difference: 20 kPa
Pipe connections (B.S.P.)	3/4 inch for gas, cold water and hot water	Not specified
Power supply	220 V, 50 Hz AC
Multiple built-in safety devices	❌ Not specified	✅
Component materials	Not specified	Selected components made from polycarbonate
Place of manufacture	Japan	Taiwan, China
Country of origin (Attributes)	Japan	Taiwan
Warranty period (Attributes)	3 years
Maintenance service	Free permanent maintenance; parts included for the first 3 years
Delivery service	Free delivery service	Free delivery to designated addresses
Standard installation	Free standard installation
Usage and order restrictions	Not for industrial or commercial use; industrial and commercial orders or addresses are not accepted

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