Rheem RH188 Electric Instant Water Heater

In stock
1-Year Warranty
Curbside Pickup

Brothers Richard and Donald Rheem founded Rheem Manufacturing Company in Emeryville, CA, in 1925. While the company has produced several products in its nearly 100 years of operation, Rheem is currently the only manufacturer in the world that produces heating, cooling, water heating, pool & spa heating and commercial refrigeration products and it is the largest manufacturer of water heating products in North America.


  • Brand New Facelifted Design while maintaining high quality shower performance
  • Built-in Power Surge protector to prevent electric shocks
  • 3 Different shower modes to provide you with a variety of shower experiences
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Rheem RH188 Electric Instant Water Heater



Water heater produces hot water instantly so you can enjoy a hot shower without having to wait for water to be heated up, nor worry about ever running out of hot water

3-in-1 compact valve to allow for easy control of water flow

Large and smooth temperature control knob for easy grip and precise temperature control

Three different spray modes to give you a variety of shower experiences

Copper heating element to provide rapid heat transfer


Built-in power protection to ensure power does not surge and cause

Dual Temperature Cut-off to prevent overheating and scalding

IP25 Protection to ensure internal electrical components do not get splashed by water

Casing designed to be non-flammable and self-extinguishing to provide protection against fire

Peace of Mind

All-in-One Hydraulic Structure to minimize points of vulnerability to ensure long lasting performance


Rheem RH188

Rated Wattage




Rated Voltage


Rated Frequency


Flow rate (Min-Max)

1.8 - 6 L/min

Water Pressure (Min-Max)

0.2 - 0.38 Mpa


IEC 60335-2-35


RCD C/W Double Pole Relay (2P)

Sensitivity of RCD

15mA cut off *(7.5mA to 15mA)

Safety Class

Class 1 appliances /IP25



Splash Proof


Safety Thermostat

Yes (55 Degree °C – Auto Resettable)

Thermal Cut-Off

Yes (85 Degree °C – Manual Resettable)

Heating Element

Copper Sheathed Heating Element

Flow Switch


Power Selection Mode

Step-less Electronic Power Control

Pressure Pump


Water Filter Mesh

Available and built in at inlet stop valve

Material of Heater Canister

Engineering Plastic PP (Polypropylene)

Hand Shower

3 Patterns

Shower Accessories

Height Adjustable & rotatable shower kit

Soap Dish


Product Dimension

195 X 300 X 80mm (90.2mm with knob)


1.80 kg

More Information
Product Weight (kg) 1.8
Brand Rheem
Color White
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