My suggestion is cycle such as whites and heavy duty use the heaviest soil level to provide the longest water heating. For the wash cycle. Is there a sanitized that could get temperature up to over a hundred and fifty. Also add steam that helps turn on the heater. If there is no steam option then that means the model has no integral on board heater to supplement Heating. You're going to be there two weeks then you have plenty of time to play with this washer.