10 tips for keeping cool this summer | Environment Victoria

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Top 10 tips for keeping cool this summer

Things can get sweaty in summer. Here are some tips to make your house feel like a home and not an oven on hot days, without sending your electricity bill or your greenhouse gas emissions through the roof. And it's a two for one deal - lots of these tips will also help keep your house warm in winter.

Read on, or download our keeping cool fact sheet 

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1. On hot days, heat comes straight through unprotected windows

almost as if there was nothing there at all. The answer is to shade your north and west facing windows. Awnings, deciduous trees and pergolas with deciduous vines are particularly good options, because they give you shade in summer and sun in winter. If these aren't an option, you could consider putting a reflective film on the glass. This works well in summer, but means you get less sun in winter — unless you get the clever stuff you stick on with Velcro dots and can then take down. 

2. A bit of strategic opening and shutting can make a big difference

Shut your windows and curtains on hot days, then open up the whole house when it gets cool in the evening. Thick curtains with block out backing or solid blinds (not ones with gaps in them like Venetians) will make a bit of a difference to your summer cooling and a lot of a difference to your winter heating. Also, if you have bits of your house which you just can’t keep cool, shut the door to these areas so they don’t heat the rest of the house.

3. Use a fan first

instead of turning on the cooling as soon as it gets warm. Then if it gets too hot for the fan, try the fan and the air con together, to help move the air around the room. Fans are a good money saving tip — they cost virtually nothing to run, while your air conditioner can guzzle electricity, which in Victoria means it’s also responsible for a fair whack of CO2. Evaporative coolers don’t use as much energy as refrigerated air  conditioning, but they guzzle water instead — as much as 60 litres an hour for ducted systems.

4. Set your thermostat to 26°C

Hot weather can make you want to set the cooling all the way down to 21°C and get out your scarf and roast marshmallows. But cooling to just 26° should keep your home comfortable and save you money — setting your thermostat just 1° cooler can up your cooling bill by 15%.

5. Just cool the room you’re in

and you’ll save lots of energy, and give your cooler a chance to work properly, instead of trying to cool a bigger area than it’s capable of. Shut the doors to this room and seal the gaps so your nice cool air doesn’t sneak out under the door. Weather strips are a cheap and easy way to do this, and will also keep the heat in when you want it, in winter.

6. Get yourself some insulation

It doesn’t just keep your house warm in winter, it also keeps it cool in summer, particularly if you combine bulk insulation (big batts) with foil insulation (thin sheets). Ceiling insulation can cut your energy use by 45%, which means it pays for itself in reduced energy bills. And with the price of energy set to rise, insulating now is a smart way of avoiding excessive energy bills in the future. Worried about the safety of insulation? Get the low down.

7. Hang out in the great outdoors

No, we don’t mean in the middle of the day. But when it gets cooler in the evenings, cooking in the backyard or at the electric BBQ at the local park can be a lot nicer than cooking in a sweaty kitchen. Pull out the bean bag, garden furniture and mozzie coil and make your outdoor space a nice place to hang out.

8. Get inventive!

If you just can’t cool your house properly, it’s time to pull out creative ideas, which might not be that schmick, but they’re a whole lot better than nothing. Try using a spray bottle to spray water on your face, carrying around a wet face washer on the back of your neck, wetting your sheet before going to bed or setting up a kiddy pool on the verandah for your sweaty feet.

9. Look after your cooler

If you’ve got an air conditioner, keep the outdoor bit of it shaded (e.g. with plants) and clean its filters regularly.

10. Got money to burn?

Here are some suggestions that don’t quite fit into ‘quick and easy’ but are worth thinking about:

  • If you’re thinking of buying an air conditioner, think about ceiling fans and good insulation first. Then make sure you get one with a high star rating for energy efficiency, and one which is the right size for the room you’ll be cooling.
  • Paint your roof and walls a light colour! This will keep your house cooler, by reflecting heat (but you might want to check with your council — some have rules around roof colour).
  • If you’re getting new windows, go for ones which open wide, so you can get lots of cool air into the house quickly. Also avoid aluminium frames, because heat passes through them easily.
  • Outdoor paving can store heat, making your house cool down slower in the evenings. You could replace it with plants, or a drought tolerant lawn, or simply try to shade it. 

If you’re a renter and want to know which of these things you could get away with, check out the Victorian Green Renters’ Guide.





Tips to stay cool

Invest in awnings, they keep the summer heat outside the house. If you are still warm, invest in evaporative cooler. It works well in dry summer like Victoria and consumes less power than dry air-conditioning.

Wed, 04/12/2013 - 22:08 — Anonymous -

Keeping Cool

Instead of carrying around a wet face washer on the back of your neck try a neck cooler from Coldpacks Direct here http://coldpacksdirect.com/shop.html and stay cooler for longer

Thu, 25/04/2013 - 01:26 — Anonymous -

Keep your house cool

Consider a mesh security door to let a cool breeze flow through the house at night time while keeping the mozzies out.

Also, while trying to sleep at night you don't need the a/c on. Just use a regular fan. Much cheaper and a lot more comfortable.

Tue, 09/04/2013 - 00:16 — Anonymous -

Keeping cool in summer

Nice read! I really liked all the suggestions and tips for keeping cool in summer. Keeping the roofs fit and cool in summers is a big challenge for most of the homeowners. As the temperature raises cost of cooling the house obviously increases. In summers you can paint your roofs with white color or with specially formulated reflective paint as it will help rooms under the flat roofs much cooler.
Reference: - http://www.topgraderoofing.ie

Fri, 15/03/2013 - 16:19 — Anonymous -

keeping cool in summer and warm in winter


Check out


Lots of useful advice from an energy efficiency perspective (like passive solar design) that can help keep the temperature just right whilst reducing costs and environmental impact.

Sat, 17/03/2012 - 12:12 — Anonymous -

or you could just turn off the aircon altogether...

My top tips -

Drink more water.
(add ice for an extra cool boost)

Wear a cool, wet scarf around your head/shoulders. Tres chic. And it feels lush.

Open the doors and windows to your house that will allow a cross breeze!
(Spent yesterday listening to my neighbour's loud mega-aircon controlling their sealed house, while enjoying a GORGEOUS natural (and pretty constant) breeze through our home. A kiss of fresh nature, even in a city suburb!)

Drink more water. Oops, did I say that already? .. Drink more water. :)

Go barefoot. Yes, unless you're spending your whole day on hot pavements, this simple trick can cool you down significantly!

Take a regular refresher break - splash some cool water across your hands (including wrists), face/brow, and the back of your neck. Feels great, and clears the mind! Also excellent are spray mists with some essential oils (esp rose waters)!

If you're dressed appropriately, a little sweat is a very sexy thing! :)

Lastly, let those muscles relax and enjoy. Hey, it won't be long before this town get's cold and miserable again, and we can all go back to complaining about Melbourne's long gray winter - so ENJOY it while you can! Let that heat take the stress out of your muscles, find the flow in your movements, and get in touch with the season!

~ @KathryAnanda.

Wed, 18/01/2012 - 11:55 — Anonymous -

Keeping cool

It's also good to remember our bodies' natural cooling systems of perspiration and accliamatisation.

Perspiring cools us by 5-7c by having water evaporate on our skin, which takes heat energy to do, and our sweat glands contribute to this heat, which in turn cools us down. The key is to remember that effective perspiration is invisible, and every drop of actual sweat that rolls of us is wasted cooling potential. The important thing for us to do is to aid this natural process as much as possible, and the best ways to do that are to wear light loose clothing, having any kind of breeze - even of the same temperature, and drinking lots of water to keep us hydrated.

The other natural response we have is acclimatisation, which is another incredibly effective way to cope with heat (and cold in Winter). In short, the best way to acclimatise is to let ourselves be exposed to heat, especially while sleeping. And the worst is to live in an air-conditioned world.

So turn that air-con off, shade those windows, insulate that roof, let that breeze in, pour a nice cool drink, and enjoy summer!

Peter Reefman

Fri, 26/02/2010 - 12:15 — Anonymous -
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