Bonus $100 Woolworths Card when you book today. End of Financial Year Specials. Ends June. $500 Rebate Available. To be eligible to participate in and claim this offer, individuals (“Participant”) must: purchase and install a Natural Gas hot water system as a replacement for their existing non-Natural Gas hot water system between 1 April 2019 and 31 October 2019 Rheem Stellar 360 Installed $1699 Rheem Stellar 360 is a 160 Litre Storage Gas Hot Water Heater that has an amazing hot water recovery rate (The speed in which the water gets hot again). An amazing 200 litres per hour recovery.