Compare Heating Solutions

Solar Gas Geyser Heat Pump
Main Feature
  • Vessel Under Pressure
  • Stores Water
  • Stores No Water
  • Vessel Under Pressure
  • Stores Water
  • Vessel Under Pressure
  • Stores Water
Heat Source
  • Sun
  • Gas (LPG or NG)
  • Electricity
  • Ambient Air
Backup Power
  • Generator
  • UPS
  • Generator
  • Generator
System Components
  • Solar Collectors
  • Tank with Electric Element
  • Direct Circulation Pump
  • Indirect Glycol Circulation
  • Brackets for Mounting
  • Heat Exchanger
  • Burner
  • Gas Connection
  • PC Board
  • Fan
  • Electric Element
  • PRV & TP Valve
  • Vacuum Breakers
  • Tray – In roof
  • Tank
  • Compressor
  • 4 Way Valve
Safety
  • TP Valve on Tank
  • 150 point safety check / sec
  • TP Valve
  • TP Valve on Tank
Maintenance
  • Solar Collectors roof mounted
  • Exposed to external elements
  • High and Low temperatures can be experienced causing damage to the collectors and tank
  • System could be difficult to service
  • Unit is externally mounted making it easily visible and accessible to service when required.
  • No electric components are exposed to water
  • Geyser is located in the roof making it difficult to service
  • Can cause damage to personal property
  • Anode needs to be changed regularly
  • System will need to run continuously
  • Anode changed regularly to protect tank
  • Compressor is externally mounted
Disadvantages
  • Limited Hot Water – 80% of Storage Tank
  • Most hot water will be consumed at night – No Sun
  • System is not easy to install and configuration is vital
  • Potential exists for damage due to exposure to adverse weather conditions
  • Units still required the same amount of electricity as a geyser
  • Requires a minimum amount of electricity for safety checks and ignition
  • The main consumer of electricity in the home
  • Requires water to be stored
  • Limited Hot Water
  • Requires water to be circulated continuously
  • High Maintenance
  • Only Lower Temperatures can be achieved compared to other units
Advantages
  • The sun will reduce energy consumption by reducing the temperature rise of ambient water
  • You only pay for what you consume
  • Delivers an endless supply of hot water
  • Higher Flow Rates per minute
  • Easy to maintain
  • Requires no water storage
  • Can easily be operated by a UPS or other type of backup power system
  • Desired Water Temperature can be set
  • Reduce Water Waste
  • Minimize dependency on Eskom
  • Has been the predominant provider of hot water in many homes
  • Consumes lower levels of electricity
  • Needs a tank with an electric element
Influences
  • Is impacted by weather conditions
  • Eskom National Grid Power
  • Not affected by weather
  • Site specific energy delivery
  • Not dependent on Eskom
  • Not dependent on weather
  • Eskom National Grid Power
  • Not dependent on weather
  • Eskom National Grid Power