Comparisons | | Solar | Heat-Pump | - Reliant on sunny conditions
- Water temperature fluctuates depending on climatic conditions
- “Top-up” electricity heating ma be necessary for morning demand, or if temperature drops with overnight storage
- Water volume is limited by capacity of storage tank / geyser
- Large surface are required for multiple panels
- Orientation and positioning og panels is critical to their performance
- Water filled panels are heavy, adding costs to building structures
- Unsightly to some
- Playback time is difficult to determine as weather conditions affect efficiency if back-up heating is required | - Can operate 24/7 in all conditions, day &night(if required)
- Produces hot water up to 60oC controlled and maintained to set point
- Hot water is being produced whilst hot water is being used
- Water use can be up to 1.8 times the volume of the storage vessel
- Compact design, space saving, small footpring
- Versatile installation
- Units can be mounted distant to demand area, on brackets or on plinth
- Unit “pays for itself” with proven savings on monthly electricity bill. If rates increase,payback period is reduced | Solar panels can be incorporated with the heat-pump | for greater efficiency |  |  |
Energy consumption comparison | |
Self contained / domestic 4 models Capacities of 1.5 kw & 2.6 kw Storage from 150 to 300 liters
|  | Domestic & Small Commercial units Medium Capacity 5 models between 2.8 < 7.2 kw |  | Industrial Applications from 10kw up to 616kw |  | Self contained domestic water heaters | | -3 models – 150, 200 & 300 liter storage -heating capacity of 2.6 kw, power consumption 810w -self contained unit with S/S storage tank -instant hot water between 48oC – 60oC -Fitted with sacrificial anode to remove suspended solids in water -ideal for indoor installation
New model: 1.5kw capacity, 190 liter storage -500w power supply Water outlet temperature 38-70oC -outdoor installation under “semi-cover” |
 | Domestic Integrated heat pump water heaters
 | | Small capacity units – 1:1 hot water with external storage |  | -If water temperature in storage drops, pump is activated and water is circulated through heat-pump, re-heated and pumped until set temperature is achieved. | Commercial range with multiple indoor units Digital scroll cycle-heating air-con type |  | High efficiency digital scroll compressor Multi-functional air-conditioning with central water heating |
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