Atmos-Frost: Key Attributes

Key Features


Solahart Atmos-Frost has been designed and tested to withstand the harsh Australian conditions with multiple inbuilt protective Atmos-Air Heat Pumps are specially designed with multiple inbuilt protective features including:

  •  COP OF 4.5: Coefficient of Performance (COP) of 4.5** making it a highly efficient water heater to help reduce energy consumption
  •  Enamel-Lined Water Tank The high-quality durable enamel coating reduces the risk of corrosion and water leakage.
  •  Side Fan Design: Design specially developed to protect the refrigeration unit from heavy rain.
  •  Micro-channel Technology: Provides a larger contact area for more efficient water heating.
  •  Smart LED Controller Display: A bright interactive LED touchscreen display putting control at your fingertips
  •  Heavy Duty Top Cover: The ASA^ top cover can easily withstand all weather conditions.

^Acrylonitrile Styrene Acrylate (ASA) is an amorphous thermoplastic with improved weather resistance

**Testing condition: 20/15°C (Dry bulb/Wet bulb) and heating water from 15°C to 60°C.

*Solahart Warranty Details: 7/3/2 warranty; 7-year cylinder supply, 3-year labour on cylinder, 2-year parts including labour: applies to a single-family domestic dwelling only. All other applications have a 3/1/1 warranty; 3-year cylinder supply, 1-year cylinder labour, 1-year parts including labour. 

Atmos Frost 270 Technical Specifications


Dimensions H x W x D (mm) 1825 x 730 x 760
Net Weight - Empty (kg) 133
Water Tank Volume (L) 270
Maximum Rated Power Input (W) 3600
Refrigerant R134a
Element Size (kW) 2.4
Boost Capacity (L) 195
Coefficient of Performance 4.5*
Water Connections & Settings
Water Inlet/Outlet Connections Rp 3/4
Temperature Pressure Relief Valve Setting (kPa) 1000
ECV Setting (kPa) (not supplied) 850
Maximum Mains Supply Pressure
With ECV (kPa) 680
Without ECV (kPa) 800

* Testing condition: 20/15°C (Dry bulb/Wet bulb) and heating water from 15°C to 60°C.

How Heat Pump Water Heaters Work

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 it gives off heat which is absorbed by the water inside the storage 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 outlet louvers back to atmosphere and the heated water is circulated back into the top of the storage tank. This process continues while ever heating is required until the water in the storage tank reaches a temperature of 60°C.  

User-Friendly Smart Control

Every Solahart Atmos-Air Heat Pump comes with an inbuilt touch LCD display. It is user-friendly and boasts a range of operation modes and settings to ensure the lowest energy consumption.

  • Vacation Mode - Saves energy when you are on holidays
  • Eco-Heating - Smart heating to save energy
  • Boost Mode - For emergency hot water requirements
  • Variable Temperature Setting - Choose from 55°C to 75°C
  • De-icing Function - Automatic de-icing in frost conditions

The Smart Way To Create Hot Water Out Of Thin Air

ATMOS Air Brochure:

ATMOS Air Installation Manual: