Before buying a system, what information should I have at hand?
You should be able to answer the following questions:
Is the supplier and or installer listed with SESSA?
Is the SWH system a SABS tested and passed system?
Can the supplier provide a Q factor?
Are you prepared to have a tank on the roof?
Have you looked at measures to reduce hot water consumption?
What size of system do you require?
What is the efficiency of the system?
What are the likely daily kWh savings?
What does the system cost?
What is the payback period?