Laing Therm products Infinity Gecko SSPA spa heater replacement - 2.7kw

2.7kw = 11.25A - cannot be used on 10A power supply.
As long as the spa has 15A+ power your electrician should be able to confirm this heater will suit.

Replaces older 2.0kw heaters no longer available

This heater has a threaded 1/8" NPT port for a pressure switch to screw into. Pressure switch sold separately.
If you are replacing a heater without a pressure switch, this port needs to be plugged with a pressure switch or SS threaded bung available separately.

Laing Thermotech Infinity 2.0kw circulation style heater replacement to suit Gecko Electronics SSPA spa packs and many other circulation heater applications. 
Used on Heritage Spas, Lanark Spas, Southwest Spas, Sierra Spas, Sundance Spas and many others
Is no longer available as 2.0kw.