Recent Buying Selling Lifestyle Investor Tenants
Recent Buying Selling Lifestyle Investor Tenants
Buying Selling Lifestyle Investor Tenants

Tips to warm up while keeping your environmental footprint down

11-Aug-2020
Written by Ashley Blake

If you’re like us, you probably spent the majority of the last few weeks inside next to the heater or fireplace to escape the cold snap that has come through Sydney. Although it’s much easier to bunker down at home these days due to isolation, as the temperature rises in your home, so does our carbon footprint and energy bills.

Heating and cooling often accounts for up to 40 percent of energy bills. And energy consumption inside an Australian house is typically responsible each year for 8.5 tonnes of greenhouse gas emissions, not including what we produce from transport and the food we eat or the things we buy.

Of course, the extent you warm up or cool down your home depends on individual circumstances, such as whether you live in a house or an apartment, the size of your home and its orientation towards the sun. Here are a few tips to reduce your footprint (and energy bills) that can apply to many circumstances.

At no cost
Layering up inside is good, but combining it with exercise is better. There are several small things you can do that don’t really cost much but will make a huge difference to your comfort levels.

For example, making sure all windows are covered, and using doors or partitions, reduces heat and cold transfer between your rooms and the outside. Similarly, identifying and addressing any drafts or leaks around doors and windows, chimneys, gaps in floorboards, and so on, will also help improve the thermal comfort of your house.

You’ve probably been told to just layer up, rather than switching the heater on. It’s true – adding a scarf and a woolly hat can help, but combining them with five minutes of exercise each hour (try a few star jumps) also makes a huge difference to your warmth. It’s much more effective than layering up while sitting passively.

Hot water bottle or electric blanket?
Compared to an electric blanket, a hot water bottle uses far less energy to make and keeps you warmer for longer.

Gas, electricity or reverse cycle air conditioning?
It’s rare a heating system needs to be on for 24 hours a day in every room of the house.

Reverse cycle air conditioning can have a similar or smaller carbon footprint than gas heating, depending on your location. And gas heaters have carbon footprints two or three times smaller than electric heaters.

Medium to large household gas heaters can generally supply significantly more power for heating than an electric heater. So if you’re using a gas appliance instead of reverse cycle air conditioning, you may find it gives you a warmer house but consumes more energy.

Take care not to leave doors open unnecessarily, use room partitions where possible, and use the zone controls if your heating system has them to manage the rooms that need to be heated. If you have a timer on your heating system controller, use it instead of just letting the heater run.

Split or ducted air conditioner systems?
Split systems of air conditioning are more efficient because they usually heat up or cool down only one area.

Air conditioning systems are often classed as either split or ducted. With split systems, part of the air conditioner is outside the house and the other part is in the room being heated or cooled. In this case, the outside unit sends hot or cold refrigerant through pipes to one or more inside units and these heat or cool air in the rooms.

With ducted systems, the inside unit is not in the room being conditioned, but typically may be in the ceiling or floor, where it warms or chills a stream of air delivered through air ducts to each room.

So which is more efficient?
Split systems are more efficient than unzoned ducted systems because they heat just the rooms that need to be warmed. Also, ceiling spaces can get very hot or cold, so ducting needs to have its own high-quality insulation, which should be regularly checked and repaired as necessary. Otherwise, you could easily double or triple your energy consumption.

Ducted systems are useful where there are large numbers of rooms that need to be conditioned, or if the house is in a damp location so occasionally passing warm air through the whole house keeps it dry.

When buying an air conditioner, check it has a star rating to indicate energy efficiency and look out for as many stars as possible. Be wary of standby power.

When you switch off an air conditioner with the hand control, it will still use electricity, even if it’s not heating or cooling. Older models may consume as much electricity on standby as when running. So if you’re buying an air conditioner that can’t routinely be switched completely off, make sure you ask how much standby power it uses.

Be wary – some suppliers may only tell you the standby power for the inside unit, ask them for the standby power for the whole system including both the inside and outside units. If it’s much more than 20 watts, consider another model.

When it comes to taking action on climate change, we can all play our part to save energy and reduce emissions. Following just some of these tips will not only help you stay warm, but also keep your emissions profile lower.

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