Rheem Multipak MPI03
SunCity Hot Water supplies, installs and services the Rheem Multipak MPI03 across the Sunshine Coast, Brisbane, Bribie Island and Gympie — backed by our quality workmanship guarantee. Call 1300 728 122.
Enhance your facility's hot water system with the Rheem Multipak MPI03. Contact SunCity Hot Water today for more information and expert advice.

Key Features
Natural Gas and Propane Models
Available in both Natural Gas and Propane models, the Rheem Multipak MPI03 adapts seamlessly to your specific fuel source, ensuring consistent, high-efficiency performance.
Left or Right-Hand Plumbing
Designed for convenience, the system can be configured for left or right-hand plumbing. This adaptability streamlines installation, allowing for effortless integration into various layouts and space constraints.
Wall and Floor Mount Options
The unit supports both wall and floor mounting. This flexibility maximises available space, allowing for a clean, organised setup that fits comfortably within any facility’s design.
Product Documents
Meets High Demand When Needed
The Rheem Multipak MPI03 features a staged ignition system that delivers hot water for both large, intermittent demands and smaller, ongoing needs without wasting energy when not in use. This ensures your facility has reliable hot water while optimising energy efficiency.

Fast and Efficient to Install
Factory testing prior to delivery guarantees that the Rheem Multipak MPI03 arrives ready to install, facilitating a quick and efficient setup with minimal onsite delays.
Tempering Flexibility
In 60°C mode, the Rheem Multipak MPI03 works seamlessly with dead leg and recirculation systems that require tempering, while the 50°C setting allows it to be used without additional tempering devices. This temperature flexibility enables it to adapt to varied facility requirements with ease.
Installation, Maintenance & Warranty
Installation

Rigorous factory testing prior to delivery ensures the Rheem Multipak MPI03 arrives ready for installation. This streamlined process minimises on-site delays, ensuring quick commissioning and operational readiness.
Maintenance

Regular maintenance ensures continued efficiency and reliability. Annual servicing by a qualified technician is recommended to inspect gas connections, burners, and thermostats.
Warranty
-
The Rheem Multipak MPI03 is backed by a solid commercial warranty:
-
5-year warranty on parts (heat exchanger) when the thermostat is 75°C or below.
-
12-month warranty on the heat exchanger when the thermostat exceeds 75°C.
-
12-month warranty on parts and labour.
-
Frequently Asked Questions
What does staged delivery on demand mean for the Rheem Multipak MPI03?
The staged delivery system efficiently responds to varying demand levels. It handles both large, intermittent loads and consistent low-demand periods without wasting energy during idle times.
Can the Rheem Multipak MPI03 accommodate different plumbing configurations?
The unit offers flexible left or right-hand plumbing options, ensuring seamless integration into various layouts to meet specific facility requirements.
Is the Rheem Multipak MPI03 suitable for dead leg and recirculation systems?
Yes. The Rheem Multipak MPI03 is suitable for dead leg and recirculation systems, particularly in 60°C mode, ensuring efficient delivery even where tempering is required.
How much does a new hot water system cost?
The cost of a new hot water system depends on the type and size. Electric storage systems are the most affordable upfront, while heat pump and solar systems cost more but save on running costs and may qualify for rebates. Call SunCity Hot Water on 1300 728 122 for an all-inclusive supplied-and-installed quote on the Rheem Multipak MPI03.
How long does a hot water system last?
Most hot water systems last 8–12 years. Electric storage systems typically last 8–10 years, while heat pump and solar systems can last 15 years or more with regular servicing.
What size hot water system do I need?
As a guide, 1–2 people suit 125–160L, 3–4 people (a family of four) suit 250–315L, and larger households suit 400L. Continuous-flow gas units are sized by hot water flow rate instead. SunCity will help size the right system for your household.
How much does it cost to install a hot water system?
SunCity Hot Water quotes all-inclusive pricing — supply, installation by licensed plumbers and electricians, tempering and pressure-relief valves, removal of the old unit, QBCC fees and GST — with no hidden extras. Call 1300 728 122 for a fast quote.
Australia's Leading Hot Water Brands
We supply, install & service all major brands.
OMNI X Hot Water Systems
Rheem Hot Water Systems
AquaMAX Hot Water Systems
iHeat Solar Hot Water
iStore Heat Pump Hot Water
Apricus Solar Hot Water
Reclaim Residential
Vulcan Hot Water Systems
Haier Heat Pumps
EvoHeat Heat Pumps
Thermastore
Rinnai Hot Water Systems
Bosch Hot Water Systems
Stiebel Eltron Water Heater
Dux Hot Water SystemsNeed hot water fast?
Get a free quote today — same-day service available across SE QLD.
