The experts in water heaters and heat pumps have combined the technology of both to bring you a very clever solution - a Hot Water Heat Pump called HydraHeat®. Using the efficiency of heat pump technology, HydraHeat® will heat a home’s water while saving you up to 75% on your water heating costs*. The result is a far more cost-effective and more sustainable solution for the homes of tomorrow. Designed and built right here in New Zealand for Kiwi conditions, HydraHeat® is easy to install for any home.
 |
Up to 75% Savings on Hot Water Costs* Provides highly efficient water heating, minimising energy consumption and lowering operating costs. |
 |
Dedicated to Sustainability Powered by only 150g of high-efficiency R290 refrigerant with low Global Warming Potential and COP of 4.7.** |
 |
Renowned Quality Crafted with exceptional quality by Rinnai New Zealand, the trusted name in total home living. |
 |
Designed and built in NZ Specifically designed for New Zealand climatic conditions (from -10°C to +42°C), as well as coastal locations. Operates in full heat pump mode right down to -10°C without the need for electric boosting. |
 |
Reliability The inbuilt electric element guarantees a consistent and dependable supply of hot water, at all times. |
 |
Modular ‘Heat Pump Ready’ Design Upgrade from a standalone HydraHeat® electric cylinder to Hot Water Heat Pump Technology by adding the HydraHeat® head unit. |
 |
Easy Servicing Removable Heat Pump unit allows for easy servicing, and ensures uninterrupted supply of hot water. |
 |
Frost Protection Built-in defrost and frost protection functions to handle colder climates. |
 |
NZ MEPS Compliant MEPS (Minimum Energy Performance Standard) means less heat loss from unit and less energy use, resulting in a more efficient product. Not all Hot Water Heat Pumps in New Zealand are MEPS compliant. |
 |
Warranties 5-year heat pump unit warranty and a 7-year cylinder warranty. |
 |
User Friendly Control Interface Features OLED screen and six operation modes for versatility. |
 |
6 Operation Modes Standard, Boost, Eco 55, Eco 50, High Usage, and Element Only. |
 |
Ideal for a Range of Residential Styles Suitable for homes of 2–6 people. Plus an operating sound level of only 45dBA makes it suitable for a wide range of homes, including built-up residential areas. |
* Compared with a standard hot water cylinder in Zone 5 (Auckland). Annual energy performance estimated according to AS/NZS4234:2008 and AS/NZS5125:2014, medium load size.
** Inlet water temperature 19°C, Outlet Water temperature 55°C, Dry Bulb Temperature 19°C. Accredited Testing to AS/NZS 5125 Pending by NATA accredited Provider.
Product description
The Rinnai HydraHeat® is designed primarily for outdoor installations. It may be possible to install internally if the proposed location is not an occupied space as defined by AS/NZS 5149, consult a qualified installer prior to installation.
Scope of use
Primarily designed for residential applications, but can be used for smaller commercial applications.
Not suitable as a spa or swimming pool heater, or for hydronic applications. Hard and acidic water will need to be treated to use this product, refer water quality parameters in the support material (downloads).
RHPN361A275E20
275 L
4.7 W/W
(inlet water temp 19 ºC, outlet water temp. 55 ºC, ambient temp. 19 ºC) .
Accredited Testing to AS/NZS 5125 Pending by NATA accredited Provider.
802 W / 3725 W
In standard, eco 50/55 modes, the heat pump provides 100% of the heating within the operating range. Outside these limits the electric element will operate.
89 L/h
Recovery rate is calculated at Eco 55 mode, 19 ºC ambient temp., 41 ºC rise.
2 kW
Enamel
-10 to 42 ºC
45 dB(A)
Sound pressure level measured at 1 m distance from the water heater in a free field. Appliance operated in standard mode (60 ºC) at an ambient temperature of 19 ºC.
R290 / 150 g (A3 flammable)
IPX4 header and cylinder
Nov 2023
Discover the benefits of a Rinnai HydraHeat™, the latest innovation in hot water heat pumps, made in NZ.
Read Article
Hot water heat pumps are innovative water-heating technologies that are helping to address environmental concerns and improve energy efficiency.
Read Article
Hot water can make up a third of our electricity bill! This ends up being a lot of amount of money as time goes by. With a few small changes in our daily habits and routines, we can cut down on these costs.
Read Article
