Roof ventilation - During Summer the roof space can literally bake and if there is no where for that heat to go it will build a stack of hot air in the roof which will eventually force itself into your living space from the ceiling down (through ceiling fans, down lights, etc). Therefore install just enough ventilation to stop the stacking effect.
Close doors - Don't leave all your doors open, close the doors to rooms you do not use. In this way you have reduced the area to maintain cool or warm.
Natural ventilation - Try to learn from the old ways of keeping buildings cool, like WindCatchers.
CFLs - Use Compact Fluorescent Light bulbs (CFLs) inside. CFLs use 75% less energy and produce 75% less heat than incandescent light bulbs which will save you money as well on cooling. Also consider now LED lights as they are often cheaper and easier to retrofit.
Showers - Turn on the exhaust fan in your bathroom when taking a hot shower, as this removes much of the humid air produced by the shower. This works because humidity makes it feel warmer.
Don't buy into open plan house designs - Having a house with few internal doors means it is very difficult to 'close off' the areas of the house you do not want to heat or cool. This can easily directly translate into higher energy bills, unless your house has extensive complete insulation to compensate. If you feel the need to 'see' space, go for double doors or movable screens; or put up more mirrors, but don't knock through that wall...
Clothing - May seem obvious to state, but if in Winter you can get the family into the habit of wearing a jumper and similar loose but warm clothes; you will save a fortune in heating costs, as you will be using your own body heat to help keep you warm, so allowing you to reduce the heating thermostat.
Turn down (or up) the thermostat - Basically for each degree you turn down (or up when cooling) the thermostat towards the outside temperature you reduce your heating costs and green house emissions by roughly 10%.
Use an electric blanket at night - Again, simple but effective. No need to heat the whole bedroom when you are just in the bed.. Also consider the old hot water bottle. Sometimes the old ways are the best.
External surface area compared to internal volume - A building design which has a large surface area in relation to its internal volume (i.e. lots of external walls and not much internal space) will have a harder time maintaining the preferred internal temperature compared to building with a larger internal volume compared to the external wall surface area.. The reason for this is quite simple, the more external walls the more area the external environment temperature has an 'impact' upon. The best normal house shape to minimize this effect is a simple 2 story 'square' house. If you are prepared to live in an igloo shaped house you will take this effect to a minimum as a sphere is the minimum surface area to cover the maximum volume in ratio.
Passive solar heating and passive cooling—approaches known as natural conditioning—provide comfort throughout the year by reducing, or eliminating, the need for fossil fuel. Yet while heat from sunlight and ventilation from breezes is free for the taking, few modern architects or builders really understand the principles involved.
Now Dan Chiras, author of the popular book "The Natural House," brings those principles up to date for a new generation of solar enthusiasts.
In "The Solar House," Chiras sets the record straight on the vast potential for passive heating and cooling. Acknowledging the good intentions of misguided solar designers in the past, he highlights certain egregious erros and shows how to avoid them. More importantly, Chiras explains in methodical detail how today’s home builders can succeed with solar designs.
Related Tags: heating, cooling, heating costs, passive solar, solar cycle, thermal mass, cross ventilation, ceiling fans, roof insulation, air conditioning, straw-bale, climate change, housing energy efficiency,
Related Listings: Efficient Cooling, Insulation, Green Architects
We are in southern part of India - Tamil Nadu. We are about to build a commercial building. We need to know a cost effective way to keep the inside building temp lower than the outside temp.No Air cons Please.
ON Tue, 6 Apr 10, 9:08am probably from India Reply to this comment
thanks, it is best site ever
ON Wed, 30 May 12, 10:56am probably from India Reply to this comment
With growing concern over alternative energy sources, people are more and more looking forward to sustainable energy and cheap alternatives sources for saving their hard earned $$s and also for on-going energy crisis and global warming issues too. And in this way awnings have helped people a lot by saving over 50% on cooling expenses by a recent study by PAMA and hence a considerable growth is expected in the next few years. So, putting money on awnings sounds a nice investment to me.
ON Wed, 7 Nov 12, 11:18am probably from India Reply to this comment
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