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Which Air conditioner to buy?

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14 hours ago, Cadbury said:

Get one of marginally bigger capacity than you think you need. 

 

Why? All I read says that is a waste of money and lowers the comfort level due to humidity build up.

 

https://www.airspecialist.com/articles/bigger-ac-better/

 

http://www.envirotechair.com/blog/air-conditioning-service/why-a-bigger-air-conditioner-is-not-always-better/

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For what it's worth... I've always gone with a smaller unit than recommended (or from 'calculator') and never an issue.  As for the current crop of inverter models, there's probably not much difference between the major brands these days.  I would make serviceability a major factor in choice.  IE: if you would have to order parts from China to fix something, that may not be the best choice.

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29 minutes ago, NetJunkie said:

Why? All I read says that is a waste of money and lowers the comfort level due to humidity build up.

Not so important with inverter AC's.

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22 minutes ago, NetJunkie said:

 

Why? All I read says that is a waste of money and lowers the comfort level due to humidity build up.

 

https://www.airspecialist.com/articles/bigger-ac-better/

 

http://www.envirotechair.com/blog/air-conditioning-service/why-a-bigger-air-conditioner-is-not-always-better/

With you on that certainly for non inverter models, as with those bigger than you need is worse for comfort with higher than comfortable humidity and yoyoing temperatures. Almost all Thai recommendations are significantly higher than the optimum. 

 

With an inverter AC it's a different case as they just run slower rather than switch off, but I don't know if at the slower speed they are still dehumidifying, if they don't then the recommendation would be the same "never oversize your AC"

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I'm a huge Daikin favourite, fitted 4 units 9 years ago and all are going strong. 

Clean the filter yourself twice a year and you'll be happy. 

Daikin only make air con and so concentrate 100% on their core business. 

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22 minutes ago, sometimewoodworker said:

With an inverter AC it's a different case as they just run slower rather than switch off, but I don't know if at the slower speed they are still dehumidifying, if they don't then the recommendation would be the same "never oversize your AC"

The compressor variable speed motor adjusts refrigerant flow in an attempt to bring output in line with demand. Condensation will continue to form on the evaporator and reduce humidity.   

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3 hours ago, Tracyb said:

Samsung inverter head units difficult to access filters for cleaning.

agree 100%.

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Hi Everybody, Could someone explain to me the difference between Inverter and non Inverter Air-cons ? and their function, ? Thanks

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3 minutes ago, SteveMack said:

Hi Everybody, Could someone explain to me the difference between Inverter and non Inverter Air-cons ? and their function, ? Thanks

inverters run at typically 0,33,67,100% power....non inverters run at 0,100....obvious energy savings, especially eliminating the start ups.  

Edited by moontang
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10 minutes ago, moontang said:

inverters run at typically 0,33,67,100% power....non inverters run at 0,100....obvious energy savings, especially eliminating the start ups.  

 

10 minutes ago, moontang said:

inverters run at typically 0,33,67,100% power....non inverters run at 0,100....obvious energy savings, especially eliminating the start ups.  

Thank You.

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Inverter units CAN save you money, but, despite the hype, there is no guarantee that they WILL save you money.

 

Also, it is important to note that they are more expensive to fix if they go wrong.

 

If you are in an area with iffy power, lots of brown outs or lightning surges I would avoid an inverter unit.

 

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I have very good experience with Mitsubishi "Mr:Slim" inverters – 7 pcs. running without any problems or service, apart from cleaning, in 8-years – mainly look at inverter aircons if you wish to save saving electric usage, it can be worth the extra initial installation costs...?

 

EDIT: And I'm in an area with "iffy power, lots of brown outs or lightning surges", but I have Over-voltage/Under-voltage protection switches on the main aircon power groups...?

Edited by khunPer

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11 minutes ago, khunPer said:

EDIT: And I'm in an area with "iffy power, lots of brown outs or lightning surges", but I have Over-voltage/Under-voltage protection switches on the main aircon power groups...?

What are the under/over voltage protection switches on AC power groups? Sounds complex.

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in a few more years, you will only see inverters.  Most of the fridges are inverter now, for about the same as a non inverter was five years ago...cutting yearly power usage from 500 to 265..,for a nice two door.  The protection against surge/spike is getting better...I think it is always best to turn that stuff off before the power goes out. often there is warning.

Edited by moontang

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15 minutes ago, Fruit Trader said:

What are the under/over voltage protection switches on AC power groups? Sounds complex.

Not really, you need one (or more) of these https://www.aliexpress.com/item/40A-230V-Din-rail-automatic-recovery-reconnect-over-voltage-and-under-voltage-protective-device-protector-protection/32812947642.html which will disconnect the supply if it goes out of range.

 

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However that won't protect you from surges.

 

For which you need one of these https://www.aliexpress.com/item/CHINT-NU6-II-2P-15-40KA-275V-Low-voltage-Surge-Arrestor/32808432014.html

 

And, of course, you need a man who knows how to hook it all up.

 

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