I'm investigating options to remotely turn on/off a hot water cylinder at a bach, as sometimes it isn't used for 2-3 weeks or more.
Came across this 3g iSocket, which would allow turning a device on/off via SMS for under $300: https://www.isocket3g.com/en/
Although would require a 3 pin plug to be wired onto lead going to HWC, as its hard wired.
Waiting to here back from my sparky on this, whether that is a good/bad idea, or advised against.
Has anyone done anything similar, either had a 3 pin plug wired to the HWC (for perhaps a timer, or iSocket type device)?
Or if anyone used an alternative remote device to control HWC via SMS?
Budget is limited (otherwise may as well just leave HWC on, break even point would be too long).
Hence why I spotted the iSocket, which may work out half as much $ compared to something like the Ezy Switch, or SMS Lite
We live approx 3.5 hours drive away, which would be enough time to turn HWC on remotely before we left, and arrive to hot water (tested and it takes 4.5 hours to 100% heat HWC, after 3.5 hours its usable for showers)
Note: already wrapped HWC in insulation, cutting down daily usage from approx 2kWh to approx 1.5kWh.
Calculated via Genesis daily smart meter data while bach was empty:
- property was using average 3.5kWh total per day (with HWC on cheaper controlled rate)
- dropped to 3kWh per day after HWC insulation
- dropped to 1.5kWh with HWC off
- hence HWC = 1.5kWh, and fridge/freezer = 1.5kWh (fridge is the only other item left on)