Save $200 On The Rheem Ambiheat 270L

When You Checkout Online With The Promocode RHEEM200 (while stocks last)










Rheem Mpi 325L (551325) Heat Pump Hot Water System Installed

Rheem Mpi 325L (551325) Heat Pump Hot Water System Installed - JR Gas and WaterWater Heater - Heatpump

Rheem Mpi 325L (551325) Heat Pump Hot Water System Installed


BASE RATE - Perfect for those who wish to install the exact make and model as their current system. NOTE the existing system must be compliant with current standards for this package to apply with tempering valve installed, appropriate support base and drains run to compliant discharge point.

plus SILVER INCLUSIONS - Designed for those switching from a similar electric system and wanting to upgrade the valve and pipework so its all new, complaint and working effectively. NOTE reusing old valves can effect your product warranty. The existing installation must have compliant drains and appropriate support base for this package to apply.

plus GOLD INCLUSIONS - Our most popular package for the do it right the first time person. Strip it all down and redo all the pipework, valves, fit a new support base, run drains to a compliant discharge point then dispose of the old unit.

plus PLATINUM INCLUSIONS - Designed for those wanting to replace and relocate their existing system to a new location or convert from a different system type.

STEP 1. - Select Post Rebate External Installation Package (STC Rebates signed over to JR Gas & Water on install)
STEP 2. - Select Preferred Installation Day
STEP 3. - Select Installation Area
Regular price $3,949.00 Sale price $3,549.00 Save $400
  • Free SEQ shipping
  • Returns Available
  • Secure payments
  • In stock, ready to ship
  • Inventory on the way

All online packages are for a like for like, EXTERNAL (outside building lines) replacement of existing installation only and installation fees do not cover relocating the system, upgrades to current standards, electrical supply alterations outside of a standard disconnect/reconnect, upgrades due to insufficient gas, water or power supplies or repairs of any kind outside of the hot water system UNLESS they are included the purchased package.

For all internal installations please complete our quote request form.

All electrical hot water systems must be perpendicular to the wall with the electrical connection at the front and centre facing forward. unless a relocation package has been purchased.


Two man install will be required where access issues noted below are applicable and installation is not safe to be completed by a single person will be an additional $200. Access for installation is to be free of stairs, steep driveways, through homes, over retaining walls, in ceilings. Unit must be able to be maneuverer by hand trolley from vehicle to installation position without being carried. Confirmation from JR in writing of access suitability where any of the above conditions apply. For restricted access installations we recommend completing our quote request form and sending photos prior.

Tax included. Shipping calculated at checkout.

Maximize Your Savings with the Innovative Rheem MPI 325 Heat Pump Hot Water System

Discover how the Rheem MPI 325 heat pump hot water system can lower energy costs and support sustainability. Ideal for Australian homes, this article covers the key features, savings, and user considerations you need to know.

Key Takeaways

  • The Rheem MPI 325 Heat Pump offers significant energy savings and efficient operation by using renewable heat energy from ambient air, reducing electricity use by approximately 65%, and promoting an eco-friendly solution with its multi-pass heating technology and eco-friendly refrigeration process.

  • Designed with user convenience in mind, the Rheem MPI 325 features quiet operation due to its Whisper technology, an LED display for easy monitoring, and a backup element for a continuous supply of hot water, making it suitable for moderate to warm Australian climates and average-sized families.

  • An investment in the Rheem MPI 325 Heat Pump can lead to long-term savings with a potential reduction in energy consumption by up to 73% compared to electric water heaters, coupled with warranty assurance, government rebates, and incentives that can help offset the initial cost of acquisition.

Harnessing Renewable Heat Energy: The Rheem MPI 325 Advantage

The Rheem MPI 325 series revolutionizes the way we heat water in our homes by effectively utilizing renewable heat energy. This system offers:

  • Capturing ambient heat from the air

  • Converting it into heat for water heating through an efficient process

  • Offering an eco-friendly solution that promotes energy conservation for households.

One of the key features contributing to this system’s efficiency is its multi-pass heating technology. The Rheem MPI 325 achieves uniform heating by cycling the water through the heat exchanger multiple times. This process enhances the heat exchange and boosts the system’s efficiency.

How the Heat Pump Technology Works

The functionality of the Rheem MPI 325 heavily hinges upon heat pump technology. Unlike traditional heating methods that produce heat directly, heat pump systems like the Rheem MPI 325 use electricity to transfer heat from one location to another. Reducing energy use, this system draws heat from the surrounding air, circulates it internally, and provides warmth for your home.

The Rheem MPI 325 also benefits from multi-pass heating technology. This feature not only enhances system efficiency but also minimizes performance drawbacks from the recirculation loop, thereby boosting its energy efficiency. This heat energy is then channeled through a sealed refrigeration system to deliver hot water with high efficiency.

Energy Efficiency and Savings

Significant energy savings are among the key benefits offered by the Rheem MPI 325, making it a popular choice in the plumbing trades energy efficient systems, including solar water heater options. By reducing electricity use for heating by approximately 65% compared to electric resistance heating, this system can lead to a 73% energy saving compared to traditional electric water heaters.

With exceptional energy efficiency, the Rheem MPI 325 offers the following benefits:

  • Energy savings exceeding 300%, reducing energy consumption

  • Potential to reduce energy consumption by as much as 73% compared to an electric water heater

  • Ability to heat water multiple times with constant recovery

Eco-Friendly Heating Solution

The Rheem MPI 325 is both energy-efficient and environmentally friendly. It offers the following benefits:

  • Reduces energy consumption and greenhouse gas emissions by as much as 65% in comparison to conventional electric water heaters

  • Absorbs free, renewable heat energy from the surrounding air and processes it through a refrigeration system to heat water

  • Three times more efficient than an electric water heater

This efficient use of energy minimises energy consumption, significantly reduces dependence on fossil fuels and associated emissions, thus contributing to a cleaner environment.

Quiet Operation with Smart Features

Noise produced during operation is a common concern associated with heat pump systems. Nonetheless, the Rheem MPI 325 dispels this concern. The system incorporates Whisper technology, which facilitates quieter operation. Independent reviews have found that the noise reduction capability of Rheem’s Whisper technology compares favourably with other brands. Indeed, this feature distinguishing the Rheem MPI 325 facilitates its quiet operation, positioning it as an efficient alternative to solar panels for water heating.

Aside from its quiet operation, the Rheem MPI 325 also offers intelligent features that enhance user convenience. One such feature is its LED display, which enables convenient monitoring of the operating status, while its bright interactive touchscreen display facilitates control, including the activation of the backup element when needed.

Whisper Technology

Designed to enable quieter operation, the Whisper Technology in the Rheem MPI 325 Heat Pump has made it a popular choice among plumbing trades for energy-efficient water heating solutions. This technology facilitates quieter operation in contrast to other heat pump technologies. It achieves this quiet operation by incorporating specific design elements that significantly reduce noise levels, creating a more serene atmosphere.

LED Display and Controls

The LED display of the Rheem MPI 325 Heat Pump provides users with information about the operating status, ensuring they are always aware of the heat pump’s functioning. The operating mode monitor located on the front of the heat pump module features a green LED labeled ‘normal’ to provide users with a visual indication of the current operating status of the heat pump, enabling users to efficiently confirm the proper functioning of the system.

Moreover, the quieter operation led display is capable of showing fault codes for potential issues, which can assist in troubleshooting and system maintenance.

Designed for Australian Homes

With unique climatic conditions and household sizes in mind, the Rheem MPI 325 is tailor-made for Australian homes. This system is well-suited for moderate to warm Australian climates and has been specifically engineered to cater to the hot water requirements of an average-sized family consisting of 5-7 members, owing to its 325-liter tank capacity.

Furthermore, the Rheem MPI 325 offers specific features such as:

  • Multi-pass heating

  • Whisper technology for reduced noise during operation

  • Backup element to guarantee uninterrupted hot water supply, even in low temperatures.

Ideal for Moderate to Warm Climates

Thanks to its specific features, the Rheem MPI 325 series is well-suited for moderate to warm climates, providing an ideal solution for average-sized families in these conditions. In fact, the Rheem MPI 325 demonstrates increased efficiency during the warmer months, potentially leading to energy savings and improved cost-effectiveness.

This system effectively manages heat transfer in hot weather conditions by extracting heat from the surrounding air, without relying on direct sunlight. With a specified operational temperature range from +3°C to +45°C, the Rheem MPI 325 is adaptable to diverse climate conditions.

Frost Protection for Winter Nights

While winter nights can challenge many heating systems, the Rheem MPI 325 stands up to the task. This system is equipped with:

  • A frost protection feature that is activated when temperatures fall below 3°C

  • Designed to prevent the formation of ice in the water heater’s waterways

  • Safeguarding it from potential damage in freezing conditions

  • Ensuring the consistent delivery of 60ºC hot water even during extremely cold winter nights.

Furthermore, this feature is engineered to minimize energy usage by heating at a consistent rate without causing an increase in energy consumption.

Accommodating Average-Sized Families

The Rheem MPI 325 is designed to cater to the needs of average-sized families. With a substantial tank capacity of 325 liters, this system can fulfill the daily hot water requirements of a household with 5-7 individuals. It maintains a steady hot water temperature of 60ºC, ensuring an abundant supply of hot water, even during the most frigid winter evenings, to guarantee comfort and dependability for average-sized families.

In fact, the hot water systems are adaptable to a variety of household sizes, effectively meeting the hot water requirements of 1-5 individuals, making it suitable for smaller as well as average-sized families.

Simplified Installation and Replacement

Ease of installation and replacement is one of the major advantages of the Rheem MPI 325. With its appropriate fitting locations and a sizable 325L tank capacity, this system is considered an ideal replacement for an electric water heater. Moreover, the Rheem MPI 325 includes a backup element that guarantees an uninterrupted supply of hot water, even during the coldest winter nights, ensuring a consistent supply of hot water.

The installation process for the Rheem MPI 325 includes the following steps:

  1. Refer to the Installation Instructions provided with the storage tank for detailed instructions.

  2. Determine the placement of the pressure limiting valve and the temperature pressure relief valve.

  3. Follow the instructions provided to properly install the storage tank.

  4. It is recommended to hire a professional for the installation to ensure the best results.

Replacing Electric Water Heaters

Significant advantages can be reaped by replacing an electric water heater with a heat pump system like the Rheem MPI 325. The estimated cost for replacing an electric water heater with a Rheem MPI 325 heat pump is $4367, and the duration for replacement can vary, depending on specific installation requirements, existing water heater size, and necessary modifications to plumbing and electrical connections. While replacing an electric water heater with a heat pump can present some challenges such as water leaks, insufficient hot water, and unusual noises, these can be addressed through careful attention to proper installation and maintenance.

After the replacement, it becomes crucial to prioritize proper installation and maintenance for optimized energy efficiency.

Backup Element for Continuous Hot Water

The Rheem MPI 325 Heat Pump features:

  • A backup element that guarantees an uninterrupted supply of heat pump hot water

  • Activation of the booster heating unit when heating of the water is necessary, regardless of the ambient air temperature

  • Continuous hot water supply, even during the coldest winter nights

This showcases its efficiency in multiple times constant recovery.

The back up element may be activated in freezing conditions or when there is a high demand on the system that necessitates additional heating. Importantly, the utilization of the back up element does not lead to an increase in energy consumption; the system is engineered to uphold energy efficiency.

Longevity and Warranty Assurance

Considering not just its immediate benefits but also its longevity and warranty assurance is imperative when investing in a heat pump system like the Rheem MPI 325. The average lifespan of the Rheem MPI 325 heat pump ranges from 10 to 15 years, which is similar to the longevity of other heat pump systems available in the market.

The system’s warranty includes:

  • 5-year cylinder warranty (includes provision of the cylinder for a period of 5 years)

  • 3-year cylinder labour warranty

  • 2-year warranty for the sealed systems supply and labour

  • 1-year warranty for parts supply

Expected Lifespan of the Unit

The typical lifespan of the Rheem MPI 325 Heat Pump ranges between 5 and 15 years. However, with appropriate care and maintenance, it has the potential to endure for 10-15 years or even longer. While various factors, such as installation quality, maintenance, and water quality, can influence the lifespan of the Rheem MPI 325, common reasons for a reduced lifespan include a faulty thermostat, loss of gas, and the use of flow restrictors or water-saving low flow taps, which can place strain on the system.

To optimize the lifespan, it is recommended to connect the heat pump to a 24-hour continuous tariff or an extended off-peak electricity supply, along with conducting regular maintenance and troubleshooting.

Cylinder Warranty and After-Sales Support

The Rheem MPI 325 comes with a comprehensive cylinder warranty that spans 5 years and encompasses the cylinder and its components. Additionally, the warranty applies to the installation in a single-family domestic dwelling.

Beyond the warranty, Rheem also provides robust after-sales support. Customers can avail the 5-year warranty for after-sales support by contacting Rheem Service at their dedicated number, 13 10 31.

Cost Analysis: Investment vs. Savings

At first, investing in the Rheem MPI 325 might appear to be a significant expense. However, when you factor in the long-term savings, the initial cost can be offset considerably. The initial cost of acquisition for the Rheem MPI 325 Heat Pump varies from $3,900 to $4,367. However, the Australian government offers several rebates and incentives for the installation of renewable energy systems like the Rheem MPI 325, reducing the overall cost of acquisition.

Moreover, the Rheem MPI 325 has the potential to result in substantial savings in energy expenses. The average household can save in excess of $7000 over a period of 12 years.

Initial Purchase Price

The typical retail price range for the Rheem MPI 325 Heat Pump is between $3549 and $4649. However, retailers often provide installation services as part of the price, which can bring down the overall cost. Here are some examples of prices from different retailers:

  • Same Day Hot Water Service offers supply and installation in NSW for $3,900.

  • Australian Hot Water offers the system for $4,367, inclusive of installation and old system removal.

  • JR Gas and Water offers installation starting from $3,549.

Moreover, financing options are provided for the acquisition of the Rheem MPI 325 Heat Pump, making it even more accessible.

Government Rebates and Incentives

The Australian government promotes the utilization of renewable energy systems through mechanisms such as the Small-Scale Technology Certificate (STC) scheme and the Renewable Energy Target (RET) scheme, which offer financial incentives for small-scale renewable energy systems. Specifically for the Rheem MPI 325, there are various rebates and incentives available, including:

  • The Solar Homes Program in Victoria, which offers up to $1000

  • The ActewAGL program in ACT that reduces the purchase price

  • The Queensland Government’s rebates of up to $1,000

And many others.

Long-Term Energy Bill Reduction

The Rheem MPI 325 Heat Pump has the potential to reduce energy consumption by as much as 73% in comparison to conventional electric water heaters, leading to a substantial decrease in energy bills. Factors such as the system’s Coefficient of Performance (COP), water quality, its specific type of heat pump technology, and overall energy efficiency can influence the level of reduction in energy bills.

Characteristics such as the multi-pass heating of water, the energy-efficient Whisper technology, and the built-in frost protection all contribute to ensuring long-term savings on energy bills with the Rheem MPI 325 Heat Pump.


In conclusion, the Rheem MPI 325 Heat Pump offers a compelling blend of efficiency, sustainability, and cutting-edge technology. From harnessing renewable heat energy and offering quiet operation to being ideally designed for Australian homes, this heat pump system presents a multitude of advantages. With its ease of installation, impressive longevity, warranty assurance, and the potential for significant energy savings, the Rheem MPI 325 proves to be a worthwhile investment. If you’re looking for a heating solution that not only meets your hot water needs but also aligns with environmental conservation, the Rheem MPI 325 is certainly worth considering.

Frequently Asked Questions

How much is the mpi-325?

The price of the mpi-325 is not available in the provided information.

What is the average life of a Rheem heat pump?

The average lifespan of a Rheem heat pump is around 15 years, but it can last longer with proper installation and maintenance. Heat pumps work by moving heat using refrigerant throughout the year.

How does the Rheem MPI 325 utilize renewable heat energy for water heating?

The Rheem MPI 325 captures ambient heat from the air and converts it into heat for water heating, providing an eco-friendly solution for households.

Does the Rheem MPI 325 offer a warranty?

Yes, the Rheem MPI 325 offers a comprehensive warranty including a 5-year cylinder warranty, 3-year cylinder labour warranty, 2-year sealed system supply and labour warranty, and a 1-year parts supply warranty.

What is the initial cost of acquisition for the Rheem MPI 325 Heat Pump?

The initial cost of acquisition for the Rheem MPI 325 Heat Pump ranges from $3,900 to $4,367, depending on the seller or supplier.

    Brand - Rheem
    Model Number - 551325
    Volume - 325L
    Width - 619mm
    Height - 1631mm
    Manufacturered In - Australia
    Cylinder/ Heat Exchange Material - Steel
    Cylinder/Heat-Exchange Warranty - 5 Years
    Noise Level - 47dBa
    Avoid Install Next to Sleeping Areas - Yes (Recommend Unit Relocated To Communal Areas or Switched off at Night)
    Weight - 130kg
    Energy Source - Solar
    Wifi Controller Built in or Compatible - No
    Built In Timer - No
    LED/LCD Status Indicator - Yes
    Coefficient of Performance (COP) - 4.5

    If you're in Queensland and considering a heat pump hot water system, look no further than JR Gas & Water. Here's why:

    Experience and Expertise: JR Gas & Water has over 10 years of experience in the gas and plumbing industry. Their team of licensed and insured professionals is highly skilled and knowledgeable about all aspects of heat pump installation, maintenance, and repair. They can provide expert advice on the best system for your needs and ensure a smooth installation process.

    Quality Products: JR Gas & Water uses only high-quality products from trusted brands to ensure your heat pump hot water system is reliable and efficient. They also offer a range of options to suit different budgets and requirements.

    Competitive Pricing: JR Gas & Water offers competitive pricing for their heat pump hot water systems, ensuring that you get a great value for your investment. They also provide a detailed quote upfront, so there are no surprises or hidden costs.

    Customer Service: JR Gas & Water is committed to providing excellent customer service. They are always available to answer any questions or concerns you may have and are committed to ensuring your satisfaction.

    Local Business: JR Gas & Water is a locally owned and operated business in Queensland. By choosing them for your heat pump hot water installation, you are supporting a local business and contributing to the local economy.

    Warranty and Guarantee: JR Gas & Water provides a warranty and guarantee on all their products and services, giving you peace of mind knowing that your system is covered in case of any issues.

    Sustainable and Environmentally Friendly: Heat pump hot water systems are a sustainable and environmentally friendly option for heating water. They use renewable energy sources, such as air or ground heat, to heat water, resulting in lower greenhouse gas emissions and reduced energy bills. JR Gas & Water can help you make the switch to a more sustainable and cost-effective solution for your hot water needs.

    This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

    Use collapsible tabs for more detailed information that will help customers make a purchasing decision.

    Ex: Shipping and return policies, size guides, and other common questions.


    A heat pump hot water system is an energy-efficient way to heat water for domestic use. It works by using a heat pump to extract heat from the air outside, then transferring it to the water in a storage tank.

    The benefits of installing a heat pump hot water system include lower energy bills, reduced greenhouse gas emissions, and a longer lifespan than traditional hot water systems.

    The cost of installing a heat pump hot water system in Australia can vary depending on factors such as the size of the system, the complexity of the installation, and the location of the property. On average, prices range from $2,500 to $5,000.

    Yes, there are several government rebates and incentives available for installing a heat pump hot water system in Australia. These include the Small-Scale Technology Certificate (STC) scheme, which provides financial incentives for renewable energy systems, and the Renewable Energy Target (RET) scheme, which aims to increase the use of renewable energy sources.

    The installation time for a heat pump hot water system can vary depending on the complexity of the installation and the size of the system. On average, installation can take between 2-3 hours.

    Yes, like all hot water systems, heat pump hot water systems require regular maintenance to ensure they are working efficiently and to prolong their lifespan. This includes checking the system's filters, cleaning the coils, and checking the refrigerant levels.

    Heat pump hot water systems typically last between 10-15 years, although this can vary depending on the quality of the system, the frequency of maintenance, and the level of usage.

    Yes, heat pump hot water systems can be installed in most types of properties, including residential homes, commercial buildings, and apartments.

    Yes, installing a heat pump hot water system can have environmental benefits, such as reducing greenhouse gas emissions and helping to conserve natural resources. However, it's important to ensure that the system is installed correctly and that the property has adequate ventilation to avoid any negative environmental impacts.

    Choosing the right size heat pump hot water system for your property will depend on several factors, including the number of people in the property, the level of hot water usage, and the climate in the area. A qualified installer can help you determine the right size system for your needs.

    Reviews From Our Customers


    Great service. We were about to move into a house without hot water! Were able to get to us urgently and have us up and running. Professional, friendly service! Reasonable pricing too.


    The JR Gas and Water team was very professional and friendly. They arrived on time and exchanged my hot water system within 2 hours. Will definitely use them again in the future.


    Not only is the service incredible, the quality of the work is too! The digital quotes are detailed, so you know exactly what you are paying for (and why). Jarred was prompt, efficient, and highly skilled.


    I called JR Gas and Water at 9.30 Saturday morning and he arrived at appointment time 11.30 Saturday morning.
    Job complete, waste and packaging removed.
    Highly recommend this service.
    Super Friendly, very efficient.


    I recently contacted JR Gas & Water as I needed a new electric hot water system suppled and installed. Their website is informative and easy to navigate and the quote and booking process very straight-forward. The service I experienced from my initial phone enquiry with Jay all the way through to the punctual and professional installation by Sean was absolutely amazing! The service provided far exceeded my expectations. I highly recommend JR Gas & Water.


    Accurate on time and easy to read quotes. They arrived on schedule and we’re in and out with hot water going again in no time. There was no mess left behind it was easy and hassle free


    Very informative in helping me choose a hot water system that suited my needs. Competitive prices. Quick and reliable service.Happy with my product and highly recommend this company for your hot water needs


    JR Gas and Water were fast, efficient and very reliable. They sent a quote quickly that was itemised and comprehensive. I was able to approve the quote online and they were out the next day to fit the new hot water system. As the family have a very ill family member we were all very grateful. We had tried another service just before this company and they were all over the show with lots of comments about "extras", after providing an initial quote. So glad we changed to JR Gas and Water!


    You wont see reviews this good anywhere else.

    Pay your way.

    BuyNow Pay Later with HUMM, ZipPay & Openpay

    Pay your way.

    Pay your way.

    Pay your way.

    BuyNow Pay Later with HUMM, ZipPay & Openpay
    Recently viewed