An easy guideline is to do a quick evaluation of how much electricity is being used each day in heating water.
|Meter Reading||kWh Units Used|
|Day 1 – Start||10000|
|Day 2 – Reading at 09,00||10023||23|
|Day 3 – Reading at 09,00||10047||24|
|Day 4 – Reading at 09,00 Turn off geyser||10073||26|
|Day 5 – Reading at 09,00 Turn on geyser again||10087||14|
|Average 1st 3 days||24|
|Solar geyser required – at least 8 -12 kWh Output|
When buying a solar water heater, either a retrofit (where the existing tank is used) or a complete system, buy a solar system that tells you how much electricity in kWh you should save on an average day.
We recommend you ‘Get a Quote’ from Ubersolar and compare with others.