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Nest Thermostat Adjust heating remotely to avoid earth-draining (and a big bill). US$249, nest.com
Wahl Eco Kettle Boils just enough for one cuppa, even if it’s full. $63, graysonline.com
Get yourself eco-ed up for a relatively guilt-free winter Philips Hue light bulbs Left the lights on? Switch these off using the app. From $69, philips.com.au An eco-efficient home Well, one that’s slightly greener and will save cash in the long run, anyway.