Solahart Atmos Eco 280HER
Designed for medium to large homes, the Solahart Atmos Eco 280HER is a powerful and eco-friendly hot water solution using ultra-low GWP refrigerant.
Solahart Atmos® Eco 280HER: Key Attributes
Why Atmos Eco is a smart choice
The Solahart Atmos® Eco 280HER Heat Pump is a high-performance, 280-litre system that offers a sustainable and efficient alternative to electric water heating. Using R290 refrigerant with an ultra-low Global Warming Potential (GWP), it’s designed to minimise your household’s environmental impact.
With a superior Coefficient of Performance (COP) of 5.2 and advanced microchannel heat transfer technology, the system delivers fast and uniform heating, even in colder climates or areas with harsh water.
Made in Australia, Atmos Eco 280HER combines robust durability with streamlined, user-friendly controls for dependable, year-round hot water.
-
Specifications
Model Storage capacity (L) 280 Boost capacity – by electric heating unit (L) 236 Rated Heat Pump power input @ 240 V (Watts) 690 Electric heating unit rating @ 240 V (Watts) 2400 Maximum rated power input @ 240 V (Watts) 3100 Recommended electrical circuit (Amps ) 15 Average Coefficient of Performance @ 19°C Ambient air temp & 10°C to 60°C water temp5 (COP) 5.2 People per household Up to 5 Tank height 1832 Family Size Family Size 6 Water Connections and Pressure Settings With expansion control valve (kPa ) 680 Without expansion control valve (kPa ) 800 Inlet & Outlet Rp 3/4 Temperature Press Relief (TPR) Valve setting (kPa) 1000 Expansion Control Valve (ECV) setting (kPa ) 850 Solahart Warranty Solahart Warranty (*years) 7 Dimensions and Specifications Tank height (mm) 1832 Tank width (mm) 690 Tank depth (mm) 725 Heater weight – cartoned (kg) 135 Heater weight – full (kg) 402 Refrigerant R290 Maximum Refrigerant charge (gms ) 340 IP Rating IP24 Water Heating Energy Savings Water Heating Energy Savings (#) 73.9% ** Testing condition: 19°C/15°C (Dry bulb/Wet bulb), relative humidity of 66% and heating water from 15°C to 60°C.
-
How it works
The efficient heat pump technology extracts energy from the surrounding air. Ambient warmth is used to convert the refrigerant within the sealed system into a gas. The gas is then compressed to generate even more heat, which then heats the water in the tank. What’s more, this process can work day or night, in sunshine and rain, all year round.When hot water is drawn off, and cold water enters the tank, the thermostat activates the fan and the compressor. The operation of the compressor causes a pressure difference within the sealed refrigeration system. This pressure difference causes the refrigerant to move around the sealed system. The refrigerant enters the evaporator as a liquid. As the refrigerant absorbs heat from the atmosphere, it changes state, at low pressure, from a sub-cooled liquid to a super-heated vapour or gas (evaporates). The vapour then enters the compressor and obtains more heat, known as heat of compression, and passes into the heat exchanger as a super-heated vapour at high pressure.
As the refrigerant passes through the microchannel heat exchanger wrapped around the storage cylinder, it gives off heat, which is absorbed by the water inside the cylinder. As the refrigerant gives off heat, it cools and changes state back into a liquid (condenses). The refrigerant then enters the evaporator again, and the cycle is repeated. The resulting cold air is then discharged through the air outlets back into the atmosphere. This process continues whenever heating is required until the water in the storage tank reaches its hot water temperature set point.
The Smart Way To Create Hot Water Out Of Thin Air
- Downloads
-
*Warranty Details
- 7 years cylinder supply
- 3 years cylinder labour
- 3 years sealed system supply and labour
- 2 year parts supply and labour
*The warranty periods above apply to a single-family domestic dwelling only. See the Solahart warranty set out in the Owner’s Guide and Installation Instructions. For more details call Solahart Australia 1300 769 475.
Without limiting the warranty periods shown above, a 5-year whole-of-product warranty applies to the installation of a Solahart Atmos Eco 280HER Heat Pump where:
a) A hot water rebate has been received under Solar Victoria’s Solar Homes Program for a heat pump water heater installed from 1 July 2023, and / or
b) Victorian Energy Efficiency Certificates (VEECs) have been created for a heat pump water heater installed from 1 February 2025.
For further details, call 1300 769 475. Proof of receipt of the rebate and / or proof of VEECs being created, i.e. installation quote showing number of VEECs and dollar value, plus proof of purchase (as applicable) must be produced at the time of the service call.
All other applications have a 3/1/1 warranty; 3-year cylinder supply, 1-year cylinder labour, 1-year parts, including labour.
** Testing condition: 19°C/15°C (Dry bulb/Wet bulb), relative humidity of 66% and heating water from 15°C to 60°C.
# Energy savings of up to 73.9% are based on Australian Government approved TRNSYS simulation modelling using a medium load in Zone 3 and apply when replacing an electric water heater of similar size with a Solahart 280HER24 Heat Pump water heater. Any savings will vary depending upon your location, type of water heater being replaced, hot water consumption and fuel tariff. Before installation - seek advice as to suitability to household usage and tariffs. The impact on an electricity account will depend on the tariff arrangement of the water heater being replaced and where you live. The water heater is recommended for connection to an uninterrupted 24 hour continuous tariff power supply. Depending upon the size of the household and its hot water requirements and if the Electricity Retailer permits, an extended off-peak (overnight and day) or Extended time controlled power supply connection of a minimum 16 hours per day may also be suitable. Before purchase consult your energy provider for more information on cost comparisons.
^ Calculations based on 7 min showers at 42°C mixed water temperature in moderate climate, time of use tariff.
Explore more Heat Pumps
Explore more
