The NEW Rinnai Smart Cylinder™

A hot water cylinder that typically saves 10 - 15%* on your water heating bill!

The NEW Rinnai Smart Cylinder™

Important Information :

We are at present out of stock of “Plug n Play” Rinnai Smart Cylinders. However, we have a solution for those customers keen to install a Rinnai Smart Cylinder and benefit from the savings these units deliver. The solution is a “Smart Ready” hot water cylinder for the same price as a Std cylinder and provided you register this “Smart Ready” hot water cylinders with us here [www.rinnai.co.nz/register] when our Smart “Plug n Play” hot water cylinders are back in stock; we will upgrade you. All you will be charged when we upgrade you is the difference between the cost of the Rinnai Std cylinder and the Rinnai Smart cylinder (i.e. We will cover the cost of labour to change out). Your retailer can advise you what this will be at the time of your purchase. This offer is only available on the same models and sizes listed at the bottom of this page or Rinnai hot water cylinders with an “S” at the end of the product code.




Whatever your bathroom habits, the new Rinnai Smart Cylinder™ will love you unconditionally.

That's because this revolutionary hot water cylinder actually learns a households behaviour and only heats what's needed, saving you on water heating!

Rinnai Smart Cylinder™. The more it knows you, the more it loves you.

What is it?
The way that a traditional electric hot water cylinder works means that you are paying to heat all of the water in your cylinder 24 hours a day, 7 days a week, 52 weeks a year.

The new Rinnai Smart Cylinder™ has a smart thermostat which actually learns the pattern of hot water use of your house, and then only heats the water when it knows it's going to be needed, typically saving 10 - 15% on water heating costs*, pretty smart huh!

It's easy to use too with an LCD control pad, simply set and forget.

How it works
The smart cylinder has three modes that can be selected using the control pad; IQ mode (smart learning mode), manual mode, and vacation mode.

LCD control pad with function descriptions

iQ MODE - SMART
Set, forget and save
When in this mode the Rinnai Smart Cylinder™ will learn one week of your households hot water usage behaviour.

After the first week the Rinnai Smart Cylinder™ will apply the savings algorithm and only heat water in the cylinder when it knows it will be needed.

The Rinnai Smart Cylinder™ will constantly monitor the household water usage and update the saving algorithm continuously, ensuring that it is only ever heating water to meet demand.

A minimum hot water availability is guaranteed on the level of comfort selected. There are five levels of comfort.

Standard hot water cylinder graph showing water temperature throughout a 24 hour period.

Rinnai Smart Cylinder graph showing water temperature regulation throughout a 24 hour period.

Vacation mode icon VACATION MODE
Going away on holiday? Save while you're away
In vacation mode, Rinnai Smart Cylinder will keep the water at a minimum temperature (6°C) to save power. This will also prevent the water from freezing in colder areas.
Simply select the number of days you will be away for and the Rinnai Smart Cylinder will handle the rest. After the specified time it will automatically revert to the last mode you had it on meaning  you can have a hot shower as soon as you get in the door!

Manual mode iconMANUAL MODE
When in this mode the Rinnai Smart Cylinder™ maintains the total volume of water at the selected temperature level (operates as a traditional electric storage cylinder).

FEATURES
Water level indicator

In the iQ mode the control pad shows the estimated amount of hot water available in the tank (four visual levels).

Water level indicator on control pad

Element on indicator
In iQ and manual mode a slow blinking of the shower symbol indicates when the heating element is in operation.

Child lock
Screen is able to be locked to avoid settings being changed.

Child lock feature on LCD

Which cylinders can be smart?

Image showing which cylinders can be smart

Low-medium pressure stainless steel - Rinnai Smart Cylinder™ (135, 180, 250 L)

  • Option of iQ mode—simply set and forget to typically save 10 - 15%* on your water heating bill!
  • High grade duplex stainless steel tank
  • Indoor cylinder
  • Triple inlets making connection to existing plumbing easy
  • Curved element design ensure you are heating 98% of water
  • Can operate up to 120 kPa
  • MEPS compliant
  • 10 year warranty

Click on the 'Technical' tab for model codes.

Mains pressure enamel - Rinnai Smart Cylinder™(135, 180, 250 L)

  • Option of iQ mode—simply set and forget to typically save 10 - 15%* on your water heating bill!
  • High grade enamel lined tank
  • Indoor cylinder
  • Curved element design ensure you are heating 98% of water
  • Cylinder protected by a full length high performance anode
  • MEPS compliant
  • 7 year warranty

Click on the 'Technical' tab for model codes.

Mains pressure stainless steel - Rinnai Smart Cylinder™(135, 180, 250 L)

  • Option of iQ mode—simply set and forget and typically save 10 - 15%* on your water heating bill!
  • High grade duplex stainless steel tank
  • Indoor cylinder
  • Curved element design ensure you are heating 98% of water
  • Dip tubes take cold water to the bottom of the tank to avoid mixing with water that's already heated
  • MEPS compliant
  • 10 year limited warranty

Click on the 'Technical' tab for model codes.


Need more details? Visit our FAQ page or Contact Us for more information.


*Savings are influenced by a number of factors including cylinder size, hot water use profiles and plumbing system design. Savings of 10 – 15% have been observed in field trails in New Zealand and Europe when compared to a standard electric hot water cylinder.

Suitable for residential indoor water heating applications—mains and low pressure systems.

Not suitable as a pool or spa heater, or for connection to an open loop solar or hot water heat pump system.

Water quality
Rinnai cylinders are manufactured to suit most New Zealand council water supplies. However some water supplies can have a detrimental effect on the water heater, its operation and life expectancy.

Water supplies with a high level of calcium carbonate (hard water) can cause scaling on hot surfaces. We recommend a water temperature of no more than 65 °C to minimise scale build-up. Scale reducing or water softening devices should be considered in hard water areas. The unit is not guaranteed against damage due to scaling.


Low-medium pressure stainless steel model codes

  • 135 L: LS13555030S
  • 180 L: LS18055030S
  • 250 L: LS25055030S

Mains pressure enamel model codes

Red mains pressure enamel cylinder label

  • 135 L: ME13548830S
  • 180 L: ME18048830S
  • 250 L: ME25059030S

Mains pressure stainless steel model codes

Green mains pressure stainless steel cylinder label

  • 135 L: MS13555030S
  • 180 L: MS18055030S
  • 250 L: MS25055030S
Connections Hot and cold water connections ¾ " (20 mm)
Element Incoloy 825 alloy sheath element positioned at the bottom of the tank.
• 135 L: 3 kW
• 180 L: 3 kW
• 250 L: 3 kW
Max. working pressure

850 kPa (mains pressure enamel, and stainless steel cylinders)
120 kPa (low-medium pressure stainless steel)

Pressure testing To 15 bar
Thermal insulation CFC-free polyurethane foam, compliant with MEPS standard
Thermostat Cotherm iQuaflex 14 A probe thermostat
TPR valve (mains pressure only) Rating of TPR supplied with cylinder—
factory set to 850 kPa and 90 °C.
 Market release June 2015
Cylinder recovery times (theoretical) Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.
135 L 2 hrs 22 mins (3 kW)
180 L 3 hrs 9 mins (3 kW)
250 L 4 hrs 23 mins (3 kW)

Dimensions
Rinnai Smart Cylinder dimensions table



*Typically Save 10-15% on your running costs in comparison to a Standard electric hot water cylinder Energy cost saving references


  1. The savings claim is verified by results from European tapping tests, NZ field tests and European field tests.
  2. The European efficiency testing standard for a hot water system simulates a real life situation with a number of “tapping’s” of various volumes of hot water over a time period. 
  3. Actual savings of between 10 - 23% have been observed in field tests in NZ.
  4. Field test households have included 180 & 250L cylinders with house hold size ranging from between 1 – 6 people.
  5. Actual savings made will depend on the installation although savings of 10-15% are typical. 
  6. Savings are influenced by a number of factors including cylinder size, hot water use profile and plumbing system design. 
  7. Savings are made by the reduction of heat loss from the cylinder and all of the associated components in the plumbing, including pipework.

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