Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder

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Introducing the Rinnai EasySwap indoor hot water cylinder, the aesthetic choice for cylinder replacements that looks as good as it performs.

Designed as a direct swap for existing 180L top-port cylinders, this model features ports and diameters aligned to typical indoor replacement installations. The durable colour-coated steel jacket provides a cleaner, more refined finish, making replacement installations feel like an upgrade. High quality enamel construction with anodic protection ensures the cylinder performs reliably across a wide range of water conditions. Backed by a 7-year warranty, the EasySwap is built to last.

cylinder hot water indoor top port cylinders residential

Product Details

Product: Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder
Category: Hot Water Cylinders
Sold by: Rinnai
Brand: Rinnai

Rinnai is specified by

Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder

Introducing the Rinnai EasySwap indoor hot water cylinder, the aesthetic choice for cylinder replacements that looks as good as it performs.

Specs

Model codes

ME18049020ES 2kW
ME18049030ES 3kW

Dimensions

Diameter: 490 mm
Height: 1715 mm
Cold water inlet: 120 mm

Construction

High quality glass lined (vitreous X class enamel) inner cylinder (+/- design). Sturdy corrosion resistant outer casing, and high density expanded polyurethane foam insulation.

Colour

Dune
Bunnings colour match (for touchups):
– Base Delux Vivid White
– Can size 0.25
– M OY7.75, EE OY8.25, G 0Y2.75

Connections

Hot and cold water connections ¾ ” (20 mm)
TPR ½ ” (15 mm)

Element

4-bolt cTech element positioned at the bottom of the cylinder fitted on its side

Anode

Ø21.3 mm, 1500 mm long

Pressure limiting valve

500 kPa (approx.) all models

Cold water pressure relief valve

700 kPa (approx.) all models

Thermostat

Robert Shaw black dial thermostat ST1203133
Factory set to 70 °C
Setting is between 60-70 °C

TPR

TPR supplied with the cylinders:
15 mm, 850 kPa, 10 kW, 99 °C

Weight

Empty 57 kg
Full 234 kg

Cylinder recovery times

Based on a thermostat temperature setting of 70 °C and an incoming water temperature of 15 °C. .

Model / Element / Heat up time / Recovery rate

180L, 2 kW, 5 hrs 47 mins, 30 L/h
180L, 3 kW, 3 hrs 51 mins, 44 L/h

Compliance

No cylinder wrap required. All Rinnai cylinders meet the NZ Minimum Energy Performance Standard (MEPS).

Market release

June 2026

Scope of use

indoor retrofit installations
mains and low pressure systems
residential applications

Hard or aggressive water will need to be treated in order to use this product, please test before use.

Not suitable as a spa or pool heater, or for solar thermal.

Accessories

Black ABS plastic safe tray

ABS plastic, an ideal rust resistant safe tray solution. Two styles and multiple sizes to choose from.

Galvanised safe tray

Three sizes to choose from. Galvanised safe trays are the traditional hard-wearing drip tray for New Zealand hot water cylinders.

Seismic cylinder restraint kit

Indoor cylinder seismic restraint for cylinders up to 740 mm in diameter.

Downloads

Downloads (8)8 Direct downloads • 6 Available on request

Get more Specific.

Rinnai

rinnai.co.nz

Visit the Rinnai website for the full range, specification detail and where to buy this product.

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Frequently asked questions about
Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder

The Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder is supplied by Rinnai. It is also on their website, and you can browse every product Rinnai lists on ArchiPro.

Rinnai does not publish a price for the Rinnai EasySwap Enamel Mains Pressure Indoor Cylinder on ArchiPro. for pricing, or visit their website.

It is listed under Hot Water Cylinders on ArchiPro, where you can compare it with hot water cylinders from other suppliers.

Yes. Rinnai provides catalogues, installation details, spec sheets and certifications for it, in the Downloads section above, alongside an ArchiPro spec sheet. More of their files are on their downloads page.