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  1. #51
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    Quote Originally Posted by ringtail View Post
    Old wives tail ? Don't think so. People in offices are constantly sick. The flu season in Brisbane this year has being going all year. Bad personal hygiene counts for a lot but breathing recirc air in a confined space plays more than a minor roll. Planes are the worst. And as you say, " if the unit is cleaned regularly" is a big if. However, we are not talking office blocks but domestic housing in this case. It's totally personal opinion mind you. If one wants to live in an artificial environment then go for it. Just realise that it's neither healthy or cheap.
    its an old wives tale. Im a fridgey. I work on these things day in day out. I work in offices on their systems day in day out. Any legitimately designed and installed office system would not just have as you say 're-circulated air', there would be just as much fresh air pumped through the system as there is air coming back from the conditioned rooms. Thats law.

    And as for domestic, if your house is properly built/renovated etc to ASSIST and air conditioner, you wouldnt need it over night to sleep with it on, you would really be able to get your house cool before you go to bed and sleep rather comfortably with it off. If people do make the choice to lock the house up and never breathe an ounce of fresh air, thats not the air con causing sicknesses, its poor life choices. Even without an air con on, if you closed your house up you would start being sick.

    But to say air cons cause sickness is a real stretch. If the air con is properly maintained bacteria would not be able to grow on the filter or evaporator coil. Dont forget the fan scroll either. This also needs to be pulled out and cleaned regularly. Keep it clean, the air it blows at you is no worse than the air you would breathe in regardless

  2. #52
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    Quote Originally Posted by Brian7886 View Post
    If people do make the choice to lock the house up and never breathe an ounce of fresh air, thats not the air con causing sicknesses, its poor life choices. Even without an air con on, if you closed your house up you would start being sick.
    Agreed although the vast majority of Australian homes, basically anything built last century or earlier, have excessive ventilation rates even with every single door and window firmly shut. The leakage alone gives all the ventilation, and more, that you actually need in these places.

    Different in a modern house of course as they're more tightly sealed.

  3. #53
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    Quote Originally Posted by Brian7886 View Post

    But to say air cons cause sickness is a real stretch. If the air con is properly maintained bacteria would not be able to grow on the filter or evaporator coil. Dont forget the fan scroll either. This also needs to be pulled out and cleaned regularly. Keep it clean, the air it blows at you is no worse than the air you would breathe in regardless
    Again, IF kept clean, IF properly maintained. How many domestic AC's get cleaned or serviced ? Bugger all is the answer. They get attention when they break, nothing more.

  4. #54
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    Still looking for the best way to clean the fins other than using Glenn20!

  5. #55
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    Quote Originally Posted by phild01 View Post
    Still looking for the best way to clean the fins other than using Glenn20!
    Blow torch ?

  6. #56
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    Quote Originally Posted by ringtail View Post
    Again, IF kept clean, IF properly maintained. How many domestic AC's get cleaned or serviced ? Bugger all is the answer. They get attention when they break, nothing more.
    about 90% of air cons i install (about 1000 a year) i will go back and clean annually. Not everyones a tight ass mate

    and you are still blaming the air con for cause of sickness. Its not that the air con is causing sickness, if people arent maintaining their air con then yeah, you are gunna get sick because you are blowing bacteria around your house. Thats like blaming chicken for getting salmonella when you have left it sitting on the bench for 3 days before you cook it. Or the old 'guns dont kill people' argument really.

    Would you bath in week old bath water?

  7. #57
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    Quote Originally Posted by phild01 View Post
    Still looking for the best way to clean the fins other than using Glenn20!

    refrigeration coil cleaners come in many forms. There is de-odourising foams, anti-bacterial foams, sprays, gels etc. This is where an annual 80-100 buck service is well worth it. Most quality blokes (im not talking about the guy who installs your air con you just bought from harvey norman), i mean people who are refrigeration specialists have that access to the stuff that you cant just go and buy at bunnings. If people chose to not clean the air con then yeah they will get sick, but you cant sit there and say 'oh the air con causes all our illness', more like your laziness or neglect

  8. #58
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    Quote Originally Posted by Brian7886 View Post
    refrigeration coil cleaners come in many forms. There is de-odourising foams, anti-bacterial foams, sprays, gels etc. This is where an annual 80-100 buck service is well worth it. Most quality blokes (im not talking about the guy who installs your air con you just bought from harvey norman), i mean people who are refrigeration specialists have that access to the stuff that you cant just go and buy at bunnings. If people chose to not clean the air con then yeah they will get sick, but you cant sit there and say 'oh the air con causes all our illness', more like your laziness or neglect
    Still looking for a product...it would not be a hard thing DIY!

    I'm not saying anything about the sickness aspect!

  9. #59
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    Default Looking for aircon advise

    Check heatcraft actrol etc. glen 20 wont do a thing

  10. #60
    4K Club Member ringtail's Avatar
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    Quote Originally Posted by Brian7886 View Post
    about 90% of air cons i install (about 1000 a year) i will go back and clean annually. Not everyones a tight ass mate

    and you are still blaming the air con for cause of sickness. Its not that the air con is causing sickness, if people arent maintaining their air con then yeah, you are gunna get sick because you are blowing bacteria around your house. Thats like blaming chicken for getting salmonella when you have left it sitting on the bench for 3 days before you cook it. Or the old 'guns dont kill people' argument really.

    Would you bath in week old bath water?

    1000 per year ! That's some serious money considering the install cost alone of a small split with no complications is $650 or so. No wonder anyone and everyone is installing them these days. A good gravy train to be on. However, I digress. The "laziness" factor of those that have AC is, I think, not the root cause of the issue. I would say that most owners have no idea of the maintenance requirements and if their unit is installed by Joe Bloggs then nothing will be done to that unit until it fails. I'm sure you have seen some nightmares in your time.

    The inability of people to tolerate a bit of heat and humidity or a bit of cold is astonishing these days.

  11. #61
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    Quote Originally Posted by ringtail View Post
    1000 per year ! That's some serious money considering the install cost alone of a small split with no complications is $650 or so. No wonder anyone and everyone is installing them these days. A good gravy train to be on. However, I digress. The "laziness" factor of those that have AC is, I think, not the root cause of the issue. I would say that most owners have no idea of the maintenance requirements and if their unit is installed by Joe Bloggs then nothing will be done to that unit until it fails. I'm sure you have seen some nightmares in your time.

    The inability of people to tolerate a bit of heat and humidity or a bit of cold is astonishing these days.
    yeah but we are a mid sized business doing domestic,industrial and commercial air, domestic, industrial and commercial electrical as well as appliances. And then refrigeration systems as well. Its not about a gravy train. The problem is sparkys go get their air con install license so they can install the split you buy at harvey norman or bing lee or the good guys, but the idiot selling them, and the person installing them arent telling people of how to maintain, or doing the maintenance of the systems. And its a big beef among genuine fridgies that these blokes are out doing them, and it is damaging the trade really.

    But yeah we charge about $99 for a service, this includes pulling all the casing off the indoor unit and washing, flushing drains, washing filters, full coil treatments, pull the fan barrel out and wash it, pull out louvre blades and wash, tighten electrical connections, check running currents, refrigerant pressures, rush proofing outdoor unit, wash and polish outdoor unit etc etc. People often whinge about the cost, but really, we do more in the hour we are there than a mechanic would to your car on a 350 dollar service

  12. #62
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    Quote Originally Posted by Brian7886 View Post
    yeah but we are a mid sized business doing domestic,industrial and commercial air, domestic, industrial and commercial electrical as well as appliances. And then refrigeration systems as well. Its not about a gravy train. The problem is sparkys go get their air con install license so they can install the split you buy at harvey norman or bing lee or the good guys, but the idiot selling them, and the person installing them arent telling people of how to maintain, or doing the maintenance of the systems. And its a big beef among genuine fridgies that these blokes are out doing them, and it is damaging the trade really.

    But yeah we charge about $99 for a service, this includes pulling all the casing off the indoor unit and washing, flushing drains, washing filters, full coil treatments, pull the fan barrel out and wash it, pull out louvre blades and wash, tighten electrical connections, check running currents, refrigerant pressures, rush proofing outdoor unit, wash and polish outdoor unit etc etc. People often whinge about the cost, but really, we do more in the hour we are there than a mechanic would to your car on a 350 dollar service
    Yep the motto is get in, get out, get paid, move on - not caring whether they hear from that customer ever again. I think the sparkies cottoned on as the AC guys need them for the hook up.

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    Quote Originally Posted by ringtail View Post
    Yep the motto is get in, get out, get paid, move on - not caring whether they hear from that customer ever again. I think the sparkies cottoned on as the AC guys need them for the hook up.
    the sparkies arent much of an issue to genuine fridgey firms. they usually install bugger all compared to the specialist firms. They are only licensed to install units up to 15kw and they dont have a true refrigeration ticket either so they cant actually get warranty work orders or anything. Yeah they make the quick buck. But at $650-$750 to install it depending on the job could take them 2-3 hours or more, by the time they buy trunking, pipe, cable, slab/brackets, circuit breakers etc etc they would have been better off doing a few lights and power points in a house at $60 an hour plus mark up on all material. More profit any day. They are no threat, and to me as a service agent for most brands, they generally @@@@ up a hell of a lot and create a lot of work for me

  14. #64
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    Quote Originally Posted by Brian7886 View Post
    the sparkies arent much of an issue to genuine fridgey firms. they usually install bugger all compared to the specialist firms. They are only licensed to install units up to 15kw and they dont have a true refrigeration ticket either so they cant actually get warranty work orders or anything. Yeah they make the quick buck. But at $650-$750 to install it depending on the job could take them 2-3 hours or more, by the time they buy trunking, pipe, cable, slab/brackets, circuit breakers etc etc they would have been better off doing a few lights and power points in a house at $60 an hour plus mark up on all material. More profit any day. They are no threat, and to me as a service agent for most brands, they generally @@@@ up a hell of a lot and create a lot of work for me

    Geez I could handle doing 2-3hrs work for $750 even if they make $400 clear profit out of it it's still powerful dollars. Do two of them a day 5 days a week @ $400 profit and it's 200k per year. Not too shabby

  15. #65
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    Default Looking for aircon advise

    Yeah minus fuel insurance (vehicle business public), licensing, phone costs, vehicle maintenance.

    $200 approx a week fuel (theres $10,000)
    Various licensing (1000-2000 a year)
    OHS requirements are big now and cost
    probably have to put another bloke on as doing them on your own every day wont work (theres 500-1000 a week) $25,000-$50,000 a year say
    Vehicle maintenance say 2 services, maybe a set of tyres, other bits and pieces (2,000 a year)
    Specialist equipment could spend 15-20,000 per year easy depending how deep you wanna go
    Insurance will cost you big time too. For everything vehicle/workshop/public liability/contents of vehicles

    Then there is the tax guy. If you want work, you need to produce receipts. The amount of warranty jobs knocked back because they cant prove who installed it as they have no reciept. Everyone loves a cashy, but there is plenty of times youll need to produce a receipt for the install by a licensed bloke bla bla.

    I know what ya saying. But when you throw in over heads, and if you have a full blown shop with office staff, building costs, power water etc etc that $400 profit per job as you say, is getting pretty slim.

    Genuine business's could easily justify 200-300 price increase if they wanted, but youd never get the work. 13 years ago, my previous employer (original owner of the business i now own) was charging 650 for a standard install. we charge 700. 13 years copper has increased, labour has increased, rego has increased, fuel has increased, but we still charge basically the same as back then.

    Thats the problem with the whole trade, builders charge more, concreters charge more, but the fridgey has to suck it up and cut his own throat to keep getting work.

    Until you get into commercial then you charge what you want, Woolworths are nice little earners when they have a failure. Its cheaper to pay 3000 bucks for a call out and flick some switches, change a few parts and monitor it for a few hours over night than it is to throw out 100's of 1000's worth of fruit or meat

    You wont get 2 a day all year long workin out of a van thats for sure.

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    Amazes me how the insurance etc chestnuts always arise as a defence to high hourly rates yet the breakdowns per customer are never revealed (licenced trades).

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    Quote Originally Posted by phild01 View Post
    Amazes me how the insurance etc chestnuts always arise as a defence to high hourly rates yet the breakdowns per customer are never revealed (licenced trades).
    Its not a defence. Its justification. You have over heads in every business. These need to be on-sold or you may as well shut the door. I can break down everything to my customers if required.

    Our hourly rate is charged at something like 77 bucks (plus a call out fee, which means driving to wherever the job is and spending 15 minutes or so on site), the 77 an hour covers labour (say 30-38 bucks an hour for the guy), and yeah all the over heads the business needs to pay to offer the service people are seeking.

    Thats basic business protocols really. If you are a 1 man band in a van and charging out 80 an hour, thats the bloke ripping you off. Cos he is pocketing every last cent of it.

    Advertising costs even come in, we can spend upwards of 10,000 a year on radio/tv/phone book ads.

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    Advertising costs should not come into it in any great way. These costs are associated with gaining profitable work. If advertising plays a bigger part then that is a sign of a sick competitive market or poor judgement.

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    Quote Originally Posted by phild01 View Post
    Advertising costs should not come into it in any great way. These costs are associated with gaining profitable work. If advertising plays a bigger part then that is a sign of a sick competitive market or poor judgement.
    not really, its all just business costs isnt it. ANd when you get work, that needs to come back to pay for it.

    Business isnt all about money coming in, you have outgoings too yes? These need to be made back from your work yes? Otherwise you go under.

    Its not all about costs to get profitable work, its just costs to actually have a professional business running smoothly. We are a mid sized operation, so those costs are made back over a lot of work, but it seems the greater part of society sees it as being ripped off if the tradesman coming to your home ends up with money for doing their job.

    Yet there is builders who will happily throw 30-40% onto other trades charges for the effort they went to to ring them to do the job.

    This is where @@@@ goes wrong. Builder calls for a quote on an air con for his new house he is building, client wants ducted. Our quote…..15000……price handed to customer….22,000…….customer thinks you are a rip off, yet your price would be fair in any town if the builder didnt want to earn a quick 7000 for calling you. Thats where rip off's occur.

    This is why ill owner build all my homes. Not that im saying builders are rip offs, but once they become a project manager, they do a lot of money counting and not a lot else

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    I wonder how Su is getting on with her decision...

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    Quote Originally Posted by Brian7886 View Post

    Not that im saying builders are rip offs, but once they become a project manager, they do a lot of money counting and not a lot else
    Couldn't agree more.

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    Quote Originally Posted by r3nov8or View Post
    I wonder how Su is getting on with her decision...
    Back to basics: Su has great winter heating already so that eliminates need for a heat pump (i.e.: heating & cooling air conditioner). She has a small space that really needs to drop the temp 8-10 degrees on the really hot days (maybe 5-7 on and over 40 day!) as she is happy with 26-30 odd degree summer days. She plans on selling sooner than later so investment cost should be minimal. The area is is not coastal so has dry summer heat.

    That in my book adds up to an evaporative cooler rather than a split system - and that can be a single unit on the roof with a single outlet into the ceiling - relatively central if possible, but over the main living area anyway. Or a bit of ducting if need be, but for that small space shouldn't be necessary. But an alternative would be a no-name split system cooling only from Bunnies or any department store - probably about the same sort of outlay - and under $2.5K installed, possibly less.

    Even a decent sized portable evaporative cooler might make sense - and that investment can go with Su when she leaves! Home models like http://www.convair.net.au/au/product...ve-air-coolers or these: http://evaporative-coolers.com.au/index.html or http://portacoolaustralia.com.au or

    A greater analysis needed if Su was keeping the place, but as she isn't then IMO go simple and go cheap - these are just costs to get some summer comfort in the short term - you will not be able to add those costs to the overall asking price - it will be what it is due to guess what: location, location, location . . .
    Advice from me on this forum is general and for guidance based on information given by the member posing the question. Not to be used in place of professional advice from people appropriately qualified in the relevant field. All structural work must be approved and constructed to the BCA or other relevant standards by suitably licensed persons. The person doing the work and reading my advice accepts responsibility for ensuring the work done accords with the applicable law.

  23. #73
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    Quote Originally Posted by Bloss View Post
    But an alternative would be a no-name split system cooling only from Bunnies or any department store - probably about the same sort of outlay - and under $2.5K installed, possibly less.
    You can get 6kW+ brand name reverse installed for less than that. The cheapies are usually pre-gassed and if a short run, can be installed by a nobody. Should be less than $1.5K.

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    I think Bloss is on the money with an evaporative jobby.

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    Quote Originally Posted by Uncle Bob View Post
    I think Bloss is on the money with an evaporative jobby.
    In your part of the world, I think your recommendations would be on the money. I have never really felt the benefit of such a system being in a more humid environment.

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    Quote Originally Posted by phild01 View Post
    I have never really felt the benefit of such a system being in a more humid environment.
    Yup, they work well in the dry country areas.

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    Quote Originally Posted by Bloss View Post
    B

    That in my book adds up to an evaporative cooler rather than a split system -

    Even a decent sized portable evaporative cooler might make sense - and that investment can go with Su when she leaves! Home models like Evaporative air coolers - Convair Portable Cooling Solutions or these: Evaporative Coolers or Portable Evaporative Cooling Units or

    A greater analysis needed if Su was keeping the place, but as she isn't then IMO go simple and go cheap - these are just costs to get some summer comfort in the short term - you will not be able to add those costs to the overall asking price - it will be what it is due to guess what: location, location, location . . .
    Go back quite few posts [ mind you I find the whole discussion interesting] and I think I said that already
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  28. #78
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    Yes indeed, it was previously suggested

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    Been enjoying all the info so far in this thread. Don't mind a bit of digression.

    Bloss, you have picked up every single relevant point and expressed it perfectly.

    One thing about evaporative, are you supposed to have windows open for them to operate properly?

    Evaporative may be fine but will split work just as well and without needing to open windows?

    Why do evaporative have to go on the roof. I find that strange, seeing as that's the hottest place. Why aren't they put under the house? Is it a practicality due to ducting access?

    If I do this, I think there's a local guy who installs Daikin split system for around 2.5k (not sure which one) just as a real life price to compare against.

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    Quote Originally Posted by shauck View Post
    One thing about evaporative, are you supposed to have windows open for them to operate properly?

    Evaporative may be fine but will split work just as well and without needing to open windows?

    Why do evaporative have to go on the roof?

    Why aren't they put under the house?

    Is it a practicality due to ducting access?
    Yes. Rule of thumb is window opening should be twice the area of the vents

    Probably. As long as it is properly sized.

    They don't have to. They can be ground mounted on a frame and ducted under the floor or back into the roof. However, not many houses have sufficient room under the house for a swampy or its 200mm ducting plus they rely on quite large vents into the house so having a 300mm square vent in the floor of a room might be considered impractical. Plus there can be noise issues with close placement to windows etc when on the ground.
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  31. #81
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    My take on this:
    Having the window open wouldn't be letting hot air in but pushing the rooms hot air out.
    Having it on the roof would mean ducting in the roof space conserving room space and cooler air should be entering high up.

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    Evap air feels more natural and 'fresh' with some windows slightly open, but never feels as dry and crisp, nor even quite as cold, as refrigerated. IMO

  33. #83
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    Default Re: Looking for aircon advise

    I think Evaporative is fine in dry climates up until it gets to 35+.

    After that my experience in Melbourne is that it's just pushing hot humid air.

    However when you really need air-conditioning (35+, god forbid 40+) you really need refrigerated A/C.

    Remember that super hot spell we had in Vic in mid Jan this year. My split systems didn't skip a beat, pregnant wife was at home that summer and I was suprised that the electricity bill wasn't much more, even if it was triple what it was, it would be worth every cent during that hot month.

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    Quote Originally Posted by JB1 View Post
    I think Evaporative is fine in dry climates up until it gets to 35+.

    After that my experience in Melbourne is that it's just pushing hot humid air.

    However when you really need air-conditioning (35+, god forbid 40+) you really need refrigerated A/C.

    Remember that super hot spell we had in Vic in mid Jan this year. My split systems didn't skip a beat, pregnant wife was at home that summer and I was suprised that the electricity bill wasn't much more, even if it was triple what it was, it would be worth every cent during that hot month.
    That is the most critical point. I don't intend to use it for anything else but those type of days. No point if it doesn't work, guaranteed, on the hottest days. All the other points are still important too but that one point is the reason for getting one. The rest of the points will decide which is the best compromise to suit this ridiculously small space aesthetically without killing the bank account. I feel like I'm going round a bit in circles. Hopefully I'll settle on one.

    At the moment, I think I'm leaning towards a split over the front door which faces the whole house. Any recommendations on Daikin models (or equivalent) that would work well for 36m2 - 45m2. Slimmest, least obtrusive models?

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    As this is partly an economic decision why not go with a simple "box in a window" aircon?
    Cool the hottest room in the house and/or the bedroom and take them with you when you go or leave them as part of the sale.
    Cecile and I often use a small portable swampy in conjunction with the big A/C units as the really dry air seems to exacerbate our mild asthma
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    Nah. Sorry. Value the window too much.

    Any recommendations on Daikin models (or equivalent) that would work well for 36m2 - 45m2. Slimmest, least obtrusive models?

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    LG did make the best unit appearance wise but I couldn't find it on the website. Maybe there was a problem with it and they discontinued it, don't know! It took on the appearance of a flat type of picture.

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    Quote Originally Posted by phild01 View Post
    LG did make the best unit appearance wise but I couldn't find it on the website. Maybe there was a problem with it and they discontinued it, don't know! It took on the appearance of a flat type of picture.
    LG do seem to go for the aesthetic section of market. Are they any good tho?

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    Quote Originally Posted by shauck View Post
    Nah. Sorry. Value the window too much.
    Just as well; as we just sold the unit we had spare
    "A big boy did it and ran away"

    Legal disclaimer denying responsibility to be inserted here.

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    Quote Originally Posted by shauck View Post
    LG do seem to go for the aesthetic section of market. Are they any good tho?
    Their fridges work fine and well made so assume the same for A/C.

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    Default Looking for aircon advise

    Their air cons arent the greatest. Relatively high breakdown rate. Generally pcb related. There is better units for the same money thats for sure

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    Quote Originally Posted by Brian7886 View Post
    Their air cons arent the greatest. Relatively high breakdown rate. Generally pcb related. There is better units for the same money thats for sure
    Which models would you consider for this situation?

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    Quote Originally Posted by moondog55 View Post
    just as well; as we just sold the unit we had spare
    :u

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    Su, it is a temporary solution for you and asking which is best will mean more money. Any brand can come with negative comments. For my money I would stick with something that makes economic sense for you and maybe look at something that has enough warranty to cover your need. Even a Bunnings one will have this.
    A cheap unit might fail after 5 years. One that costs twice as much might take twice as long to fail. Doesn't sound like you will use it much so you may never see a failure.
    I believe many failures occur because of the way they are installed and if not done competently an expensive unit will fail just as quickly as a cheap unit.
    My unit has got the odd negative comments and has been going strong for around 15 years, no service calls, moderate use and just cleaning the filters.

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    Phil, people do appreciate it when you put in quality items. It may not get it's money back but it may sell a house better. I'll feel better too.

    If I'm prepared to pay 2.5k to install a Daikin which is roughly what it would cost by a local installer for a possibly larger unit (partner is property manager and has seen this price a fair bit), just wanting to know which model would be ok?

    3.5kw or do I really need 5kw (bigger, hence uglier). Hoping the 3.5kw model would be fine.

    Daikin FTKS35L - Air Conditioner - Buy Online - GetCool.com.au Pty Ltd this one is 3.5kw which is slightly undersized (23-29m2) for my 36m2 area that I'd like to cool.

    REAVS Brisbane - Daikin Split System Cooling Only Inverter Wall Mounted 5.0Kw K Series this one is 5kw and for room 29-40m2 which is a little bigger than the area I'd like to cool.

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    Quote Originally Posted by phild01 View Post
    My unit has got the odd negative comments and has been going strong for around 15 years, no service calls, moderate use and just cleaning the filters.
    What unit are you using?

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    Quote Originally Posted by shauck View Post
    What unit are you using?
    Fujitsu, and not saying they a great brand but they work well enough. The older one is a 6Kw Japanese unit using the old gas, and a newer but second hand inverter type I think is made in Taiwan. I selected the outdoor areas for the compressors to pull air from under the house rather than having them located in a hot sunny spot.
    I think if you do go split that you try and get a reputable installer rather than going with the retail store. I had a guy who specialises in commercial units and he was very good. I laid out the pipework/electrical as I wanted to conceal it as best as possible. An installer doesn't want to muck around too much with the aspect of aesthetics.

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    Definitely getting an installer and I can be there if there's any finessing required to make it look neater.

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    Quote Originally Posted by shauck View Post
    Phil, people do appreciate it when you put in quality items. It may not get it's money back but it may sell a house better. I'll feel better too.

    If I'm prepared to pay 2.5k to install a Daikin which is roughly what it would cost by a local installer for a possibly larger unit (partner is property manager and has seen this price a fair bit), just wanting to know which model would be ok?

    3.5kw or do I really need 5kw (bigger, hence uglier). Hoping the 3.5kw model would be fine.

    Daikin FTKS35L - Air Conditioner - Buy Online - GetCool.com.au Pty Ltd this one is 3.5kw which is slightly undersized (23-29m2) for my 36m2 area that I'd like to cool.

    REAVS Brisbane - Daikin Split System Cooling Only Inverter Wall Mounted 5.0Kw K Series this one is 5kw and for room 29-40m2 which is a little bigger than the area I'd like to cool.
    I think I read in earlier threads that Daiken should be avoided as it is not as good as it once was. Anyhow 2.5K seems far too much for a small unit like that. Check out some units here:
    Split System Air Conditioner | Appliances Online

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