Air conditioning vs Evaporative cooling
We knew we would buy a house with a cooling system when we moved here, who in their right mind wouldn't? But we didn't realise there were two different types, and always referred to our system as "air conditioning". We have been corrected so many times by tradesmen (and others who like to point out how little us Poms know about such things) so just thought I'd mention it to you lot heading out here. There are two different systems here: Air Conditioning (as found in America) and Evaporative Cooling. As to what the differences are, well I'll leave that to someone here who is good with techie speak and knows about such things!!
Now does anyone know of a company in WA who can install "radiators" - those white metal things that you attach to walls and they heat up in winter! Well that is how I have to describe them to Ozzies who don't know what they are!! Any plumbers out there, ever thought of introducing "central heating" here, we really missed that in the winter, we were so cold in the house! |
High Jacqui i think the reason they dont have the bulky white things attached to there walls is that there is a third type of airconditioner its called reverse cycle / fan and coil units that also heat the air in winter and dry it if required and do the obvious cooling in the summer.
Enquire about heat pumps and core heating long tubes a driven into the earth and water is heatded via the earths core exp to install cheep to run though and very very green:) |
Re: Air conditioning vs Evaporative cooling
Originally posted by Jacqui Now does anyone know of a company in WA who can install "radiators" - those white metal things that you attach to walls and they heat up in winter! http://www.actewagl.com.au/productSe...l.cfm#hydronic I think this is a bit specialist and would no doubt cost a fortune to install |
Bed of Roses is right, if you get air conditioning (evaporative cooling is about as similar to real air con as a pushbike is to a car LOL) you should get reverse cycle air con, which cools the house in summer & warms it in winter.
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Mrs Dagboy is dead right about the comparison.
Evaporative is "cheap" in that it costs 2-3K to install an 8 outlet system and has running costs of about 50c an hour. It works by dripping water through corrugated cardboard pads. The water evaporates leaving "cool" air to be blown into the house. You need to leave some windows/doors open to allow stale air out. Be warned it doesn't work well in humid areas but is OK in Perth. Reverse cycle is more like you'd expect in shops etc. It costs about 1K per outlet and is more expensive to run. Having said that the cost of other methods of heating (wood, gas, electric)are pretty expensive and generally are not throughout the house. You cannot have windows open with this one if you want it to work efficiently. When we build this is the one we'll get. The third type are split systems which are wall mounted. I've been told they are a good compromise but they strike me as being quite noisy. All the best |
Originally posted by Nibbs Mrs Dagboy is dead right about the comparison. Evaporative is "cheap" in that it costs 2-3K to install an 8 outlet system and has running costs of about 50c an hour. It works by dripping water through corrugated cardboard pads. The water evaporates leaving "cool" air to be blown into the house. You need to leave some windows/doors open to allow stale air out. Be warned it doesn't work well in humid areas but is OK in Perth. Reverse cycle is more like you'd expect in shops etc. It costs about 1K per outlet and is more expensive to run. Having said that the cost of other methods of heating (wood, gas, electric)are pretty expensive and generally are not throughout the house. You cannot have windows open with this one if you want it to work efficiently. When we build this is the one we'll get. The third type are split systems which are wall mounted. I've been told they are a good compromise but they strike me as being quite noisy. All the best BTW, I have never heard of evaporative coolers as built in with outlets, must be a Perth thing! The only thing I have ever seen are free standing units that are wheeled from room to room. |
Originally posted by MrsDagboy BTW, I have never heard of evaporative coolers as built in with outlets, must be a Perth thing! The only thing I have ever seen are free standing units that are wheeled from room to room. Thanks for the advice Mrs Dagboy. That's exactly what I intend to do. I've got a coupleof contacts in the trade and they've recommended Daikin as the quietest and reliable. The muppet we rented from had the house built but would only put theair con in if we'd pay another $30 per week. So in they come, rip a hole in the roof, struggle with the ducting and stick a dodgy overflow pipe in. Still it does the job and doesn't look to bad. I'm not surprised evap doesn't exist in QLD. The humidity would mean it just wouldn't work. Cheers Nick |
Re: Air conditioning vs Evaporative cooling
Originally posted by Jacqui We knew we would buy a house with a cooling system when we moved here, who in their right mind wouldn't? But we didn't realise there were two different types, and always referred to our system as "air conditioning". We have been corrected so many times by tradesmen (and others who like to point out how little us Poms know about such things) so just thought I'd mention it to you lot heading out here. There are two different systems here: Air Conditioning (as found in America) and Evaporative Cooling. As to what the differences are, well I'll leave that to someone here who is good with techie speak and knows about such things!! Now does anyone know of a company in WA who can install "radiators" - those white metal things that you attach to walls and they heat up in winter! Well that is how I have to describe them to Ozzies who don't know what they are!! Any plumbers out there, ever thought of introducing "central heating" here, we really missed that in the winter, we were so cold in the house! OK, it will probably cost a little less to run, but the installation and more importantly maintenance cost would be much greater. We've got conventional a/c, with heating elements in the air handler for the cold weather. They work fine, and are not often on. A good investment is a "heat recovery" unit - it grabs the waste heat from the compressor unit and pops it into the hot water tank. During the a/c season we don't have to have the water heater on at all! |
Re: Air conditioning vs Evaporative cooling
Originally posted by Rog Williams If you've gone to the expense of having "proper"a/c installed, why even think of putting a wet radiator heating system in? |
Reverse cycle aircon is excellent, we have it......
Only issues with it are that you have to close windows when you put it on as it takes air from within the house, also it's noisy if the place it sucks the air from is near your bedroom. Otherwise can't complaim, in winter I put clothes airer under it and it dried like a dream. The other sort of aircon draws air fromoutside, so you open windows when it is on to release the air out and you get a big box thing on your roof. It only cools. I like aircon as radiators got dusty and cluttered up wall space. Saw a house here with underfloor heating. It was a wonderful feeling too. Mash ;) Peeing it down here in Adelaide at the mo but still in the 30's, one extreme to another today... Originally posted by MrsDagboy Bed of Roses is right, if you get air conditioning (evaporative cooling is about as similar to real air con as a pushbike is to a car LOL) you should get reverse cycle air con, which cools the house in summer & warms it in winter. |
Re: Air conditioning vs Evaporative cooling
A good investment is a "heat recovery" unit - it grabs the waste heat from the compressor unit and pops it into the hot water tank. During the a/c season we don't have to have the water heater on at all! [/QUOTE]
Rog Never herd of this before you learn somthing new every day :cool: idea, I have herd of the hot tank on the roof with electric booster but that is a much beter idea and an attempt at being green. |
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