Click on sketch to enlarge it.

1) remote monitoring capable.

2) once or twice a year checking the anti-freeze level in the system. A sensor available to indicate low level which can be remote monitored.

3) NO artificial heating device that needs daily or weekly or monthly checks.

4) Pumps and fan-coil can be 12V solar power and batteries (batteries are required as power buffer).

5) Therefore hooking up to Toronto Hydro is purely for backup to the batteries. That is to say if there are weeks of no sunshine.