Quick answer:The Rheem AmbiPower 280e is a 280L integrated heat pump hot water cylinder with class-leading COP of 5.2 — $7,499 incl GST fully installed across Auckland by Water & Gas Worx. R290 refrigerant, microchannel heating, suits up to 6 people. Price includes supply, installation, old unit removal, electrical connection, and Rheem warranty registration. Installed by Peter — licensed plumber. Call 0800 322 322.
About the Rheem AmbiPower 280e
The Rheem AmbiPower 280e is the mid-range Rheem integrated heat pump — 280 litres at a COP of 5.2. Where the MDC180 is optimised for compact households, the 280e is built for the typical Auckland household of two to four people who want meaningful storage capacity alongside heat pump efficiency. At 280 litres, it carries enough stored hot water to handle peak morning demand without the backup electric element needing to fire.
The AmbiPower 280e runs at the same 47 dBa as the MDC180 and uses the same integrated outdoor design — compressor and cylinder in a single unit. This makes installation straightforward: outdoor placement, plumbing connection back to the hot water distribution, outdoor electrical circuit, and condensate drain. We carry the unit and install Auckland wide with a typical turnaround of four to six hours for a direct replacement.
For households weighing up between the AmbiPower 280e and the similarly-priced Rinnai Enviroflo 265L, the key difference is 15 extra litres of capacity in the 280e versus a marginally higher COP in the Enviroflo. Both are strong performers at this price point — the right choice often depends on which brand's service network is stronger in your area, and we are certified installers for both.
Technical Specifications
| Capacity | 280 litres |
| Type | Integrated heat pump |
| COP (coefficient of performance) | 5.2 |
| Noise level | 47 dBa |
| Backup element | 2.4 kW electric |
| Operating range | −5°C to 40°C |
| Warranty | 5-year heat pump, 5-year cylinder |
| Refrigerant | R134a |
| Suitable for | 2–4 people |
Why This Unit for Auckland?
- — Installed across Auckland since 2009 — we know these units and the conditions they run in
- — Fixed pricing with no surprises — what we quote is what you pay
- — Licensed plumber and gasfitter — all certification included
- — Same-week installation available in most Auckland suburbs
- — Old unit disconnected, removed, and disposed of — nothing left for you to deal with
Frequently Asked Questions — Rheem AmbiPower 280e
What is the Rheem AmbiPower 280e installed price in Auckland?
The Rheem AmbiPower 280e is $7,499 incl GST fully installed. This includes the unit, old cylinder removal, plumbing connections, outdoor electrical circuit, condensate drain, and warranty registration with Rheem NZ.
What is the COP of the Rheem AmbiPower 280e?
The AmbiPower 280e has a COP of 5.2. This means it produces 5.2 units of heat per unit of electricity consumed — approximately 80% more efficient than a standard electric element. For a two to four person Auckland household, annual running costs are typically $250 to $400.
How does the AmbiPower 280e compare to the Rinnai Enviroflo 265L?
Both are priced at $7,499 installed. The AmbiPower 280e has 280L capacity (15L more than the Enviroflo 265L) but a higher COP of 5.2 versus 4.1. The Enviroflo runs slightly quieter at 43 dBa versus 47 dBa. For most Auckland households the difference in daily use is minimal — both are excellent units.
Does the Rheem AmbiPower 280e have a backup heater?
Yes. A 2.4 kW electric backup element activates automatically if ambient temperature drops below the heat pump's operational range, or if there is unusually high demand. In Auckland's climate, the backup element rarely activates in normal use.
How long is the warranty on the Rheem AmbiPower 280e?
Rheem provides a 5-year warranty on the heat pump components and a 5-year warranty on the cylinder. We register the warranty with Rheem NZ on the day of installation. Warranty service is managed through Rheem's national service network.
Can the AmbiPower 280e be installed in a tight outdoor space?
The unit requires clearance on the sides and rear for airflow. We assess the available space during the site check and confirm suitability before ordering the unit. Ground-level installation on a concrete pad is the most common approach.
Is the Rheem AmbiPower 280e eligible for Kainga Ora or council subsidies?
Heat pump hot water systems are eligible under some energy efficiency programmes. The specific subsidy availability changes from time to time — we recommend checking with EECA (Energy Efficiency and Conservation Authority) or your local council at the time of installation.
