What It Is & Key Specifications
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The CWH-4201DCR is a tankless instant-water heater with built-in DC booster pump + rain-shower set — designed to give hot shower water even under low water pressure.
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Power rating: 4.2 kW (≈ 17.5 A at 240 V) — strong enough to heat shower water almost instantly.
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Water flow / pressure compatibility: Works with minimum flow rate 2.0 L/min; minimum water pressure about 20 kPa (0.2 bar), up to max 0.3 MPa (3 bar).
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Safety & protection features: double-thermal anti-scalding (auto cut-off at 55 °C and over-heat cut-off at 85 °C); built-in double-pole RCD (Residual Current Device) for electrical safety; splash-proof casing rated IP25.
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Build & materials: Heating element “UK Technology extra-hot heating element”, durable nylon/glass-fibre tank for water heating, and standard ½" BSP threaded water connection — typical for Malaysian plumbing.
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Package includes shower accessories: Comes with a “rain shower” head + accessories set (shower head, hose, diverter/valve), so you get a full shower setup, not just the heater unit.
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Size & weight: Compact shower-heater dimensions ~ 395 × 230 × 95 mm; weight around 2.2 kg — easy to fit in typical Malaysian bathrooms.
What It Does Well — Strengths & Ideal Use Cases
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Works even if water pressure is low — thanks to the DC booster pump, it’s suitable for apartments or homes where municipal water pressure or pump pressure is weak. Good for high-rise flats where water pressure fluctuates.
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Instant hot water on demand — heats water immediately, so no need for large storage tank; convenient for daily showers, quick washes, or anytime you need hot water.
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Integrated rain-shower set — you get a complete shower solution (heater + rain shower head) in one purchase, simplifying installation and setup.
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Safety features built in — anti-scald thermostat, overheat protection, residual-current device (RCD), splash-proof housing: useful given water + electricity environment in bathrooms.
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Compact & relatively easy to install — small footprint and standard plumbing/wiring makes it suitable for many existing bathrooms without major renovation.
