Winter is here! Despite many Australians opting not to heat their homes to the point of complete comfort, many of us nevertheless will soon receive a nasty surprise when the energy bills arrive.
With Australia’s historically cheap energy, old housing stock in many areas, mild climate and frequent emphasis on low building costs, many homes are little more than “glorified tents” when it comes to thermal performance.
So here is a list of 22 things you can do to improve your home’s energy performance – some cheap, some free, and some that can even make you some money up-front as well as cutting your bills. Of course, to reach the ultimate goal of a home heated and powered by 100% renewable electricity you may still wish to put some solar panels on your roof, but why not consider the following actions first?
1. Make sure you get the maximum discount on your energy bills. Although not available everywhere, in Victoria discounts of up to 38% are available on gas or electricity. Ring up your retailer and just ask, or threaten to switch, or better yet seek out a retailer that doesn’t treat their discounts like state secrets.
2. Monitor your power usage with the help of a “smart” electricity meter or in-home electricity display. This real-time (or near-real-time) information is more useful than the coarse monthly data commonly printed on energy bills. It can help identify appliances that have inadvertently been left on or those that draw excessive power when not in use.
3. Heat your water off-peak. If you have a resistive-electric hot water storage tank, make sure it heats up at night, when off-peak power rates apply. In some areas, “time of use” rates are available.
4. Get rid of your ‘garage fridge’. It can cost hundreds of dollars a year to run an inefficient 20-year-old fridge, especially if it’s in a garage that hits 50℃ in summer.
6. Install a modern showerhead, such as those designed with double-impinging jet technology that use only 5 litres of water per minute. Old showerheads can pass up to 35 litres per minute. Why not grab a bucket and stopwatch and test yours?
7. Insulate any exposed hot water pipes, including the pressure-relief valve on your hot water tank. Make sure hot water pipes do not run uninsulated straight into the soil in your garden. Insulate electrically heated storage tanks where it is safe to do so.
8. Check your heaters and air conditioning. Gas heating systems should be checked at least every two years by a qualified person, not least to keep poisonous carbon monoxide gas at bay. All heating or cooling system filters should be cleaned regularly to improve energy efficiency and air quality.