blackwrx Member 181 Member For: 19y 9m 7d Posted 23/01/08 08:46 AM Share Posted 23/01/08 08:46 AM and the motor is actually 100W smaller than the old motor and the air con is not cooling the house as well as what it used to.I am looking at upgrading the motor if possible to a larger unit.I would like to know if anyone here can offer any assistance, my air con has 5 outlets and if I upgrade the motor I would like to go upto an 800-850Watt unit, will this actually provide better cooling?Can this be done? does anyone know how much extra air flow will be priveded by doing this? what sort of costs am I looking at?Thanks Link to comment Share on other sites More sharing options...
ZAP No boost, no bottle, just my foot on the throttle! Lifetime Members 7,935 Member For: 20y 9m 12d Gender: Male Location: Sydney Posted 23/01/08 10:01 AM Share Posted 23/01/08 10:01 AM Evaprotive Aircons are C R A P They rely on the cooling effect of water evaparation, so they will never be as cold as a propper aircon unit.Rather than getting a bigger motor, save up for a real aircon as it will pump out cold air, not just slightly cooled air.I used to have one and it made mold grow due to all the water it pumped into my living room.Also a 100w smaller motor would not make much difference. Link to comment Share on other sites More sharing options...
RHR BOOST Moderating Team 5,698 Member For: 21y 2m 21d Gender: Male Location: Southern Highlands NSW Posted 23/01/08 10:05 AM Share Posted 23/01/08 10:05 AM If the cash is tight get a portable air conditioner Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 7m 1d Gender: Male Location: Brisbane Posted 23/01/08 10:38 AM Share Posted 23/01/08 10:38 AM Depends on your location though Zapper - if you live away from the coast they are usually better than refrigerative air conditioning. That's the extent of my knowledge though.... Link to comment Share on other sites More sharing options...
jEtONiT Donating Members 1,817 Member For: 21y 19d Gender: Not Telling Location: next door.. Posted 23/01/08 11:38 AM Share Posted 23/01/08 11:38 AM anyone know the cost difference?we too are looking into a/c for the home, and don't know whether evaporative or refrigerated is the way to go..is there much difference in running costs? Link to comment Share on other sites More sharing options...
krooked Member 34 Member For: 17y 4d Gender: Male Location: Heathwood Bris Posted 23/01/08 11:46 AM Share Posted 23/01/08 11:46 AM One of my mates is an Air con installer and service person. Recommends inverters most of the time. He has just upgraded the crap cheap air cons I had with some panasonic inverter split systems. They are som much quieter I can`t hear them operating outside and I am no pro energy ratings but the tag that came with it had 5 star rating on heating and cooling. Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 7m 1d Gender: Male Location: Brisbane Posted 23/01/08 11:56 AM Share Posted 23/01/08 11:56 AM is there much difference in running costs?Substantial difference - evaporative systems are basically just a fan.Like Krooked mention though, inverters are the way to go. Worth paying the bit extra for. Link to comment Share on other sites More sharing options...
GreenXR6T Donating Members 630 Member For: 19y 2m 23d Gender: Male Location: NSW Posted 23/01/08 01:05 PM Share Posted 23/01/08 01:05 PM As Tab says, depends on your location.They are a lot cheaper to run and as long as the climate is not too humid (near the coast) they work quite well.A bigger motor doesn't necessarily give you more air flow, it's the speed that governs that (and the size of the fan etc). Some motors have a few speeds, maybe yours is on low and can be wired up to medium or high.If it's belt driven the pulley sizes can be changed to speed it up, you just have to make sure you don't overload the motor though.As for it not cooling as well it could be a number of things. Do any of the rooms get cooler than the others, if so it could be that the dampers in the duct (or ceiling register/grille) could be adjusted incorrectely, giving more air in one room than another. To adjust it properly you need an annemometer. Is it a humid day? (give it a few days and then judge the performance)Is the water pump working properly? Does it need bleeding? Is the make up water turned on? (maybe it's running dry)You don't want gale force winds coming out of the registers. Tape a streamer to the grille and see if it flaps around a bit? A nice gentle air flow will eventually make its way around the whole room. Link to comment Share on other sites More sharing options...
XtRmn8 570Nm @1800rpm Donating Members 2,441 Member For: 21y 2m 4d Gender: Male Location: Perth, WA Posted 23/01/08 02:14 PM Share Posted 23/01/08 02:14 PM There are a few factors to take into consideration with evap AC. I know that reverse cycle is better and I agree that it will cool the house better and allow you to control the temp etc plus you can heat in winter too, but at a much higher cost.Running costs are the big killer. A reverse cycle unit is about 10 times more expensive to run per hour on a similar size house. Our power bills over summer go up about $15/month and my folks go up about $200/month (much bigger house with r/c). Also for a 200srm house evap will cost around $3500-$4000 installed vs about $7000-$8000 for reverse cycle. Stay away from the cheap reverse cycle units.Our place is 195sqm living and our unit is rated for a 220sqm house and with 8 outlets we never have it over 60% fan speed. Having high ceilings makes a huge difference as does good insulation. We have R3.5 bats and 32c ceilings throughout and people are amazed at how good our evap unit works, even on 40deg WA summer days. Our unit is Cool Breeze and it has not missed a beat. Link to comment Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 5m 3d Gender: Male Posted 23/01/08 11:46 PM Share Posted 23/01/08 11:46 PM pretty sure blackwrx lives in the desert, so evap is not going to be bad for his place..as for upgrading the motor, I have no idea, sorry mate! Link to comment Share on other sites More sharing options...
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