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1 tonne split airconditioner - need suggestions

Discuss 1 tonne split airconditioner - need suggestions at the General Lounge within the HiFiVision.com - Audio Video Hi-Fi Forum; Originally Posted by Sujit As far as ACs are concerned - it is best to ...

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  #51  
Old 7th April 2010, 12:26 PM
 
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Re: 1 tonne split airconditioner - need suggestions


Quote:
Originally Posted by Sujit View Post
As far as ACs are concerned - it is best to identify a competent local ac mechanic. No company guy will be able to give you the the service you can get from a local resource - not to mention it will be cheaper as well.
TOTALLY AGREE HERE.
Whichever model you decide on, buy from the local authorised dealer. It is they who you can rely on 100% if anything goes wrong ..... all except the remote controller.

@ psycho ..... yes, a 10 x 10 room can easily be handled by a 0.75 TR AC, any type... split / window. But again, go thru my earlier mails on room parameters that you need to check
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  #52  
Old 7th April 2010, 12:42 PM
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Re: 1 tonne split airconditioner - need suggestions

I am using 3 Hitachi 1.5 ton models and they are the best compared to LG......Hitachi is expensive compared to other brands....but its very good......
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  #53  
Old 7th April 2010, 01:09 PM
 
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Re: 1 tonne split airconditioner - need suggestions

Also remember - that AC is not just to do with cooling, but also with the often neglected outdoor unit. The quality of materials used to construct the plumbing varies from manufacturer to manufacturer. I have seen O-General, Hitachi, and the old 'National' brand AC's last for over 10-15 years without a single problem - many times not even a topping of gas! That is when true 'value' becomes evident!

I am yet to see a Samsung/LG do that. They are the lowest in the quality chain for me.
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  #54  
Old 7th April 2010, 02:12 PM
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Re: 1 tonne split airconditioner - need suggestions

Yes Hitachi is great for bedrooms. The one in my master bedroom has been working effectively without a complaint since the summer of 2002. For the Home Theater I chose a Daikin, as they are the quietest ones. The Daikin quieter models are great but expensive. Hiachi is a bit cheaper, but still much more expensive than the home appliance company products. Unlike the audio world, in the air-conditioning industry you mostly get what you pay for.

thanks,
Sharad
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  #55  
Old 7th April 2010, 02:25 PM
 
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Re: 1 tonne split airconditioner - need suggestions

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Originally Posted by psychotropic View Post
interesting, so a 10' by 10' room can easily manage with a 1 ton AC? does this apply for window ACs also or only for splits?
From what little I know, a 1 ton AC (or 12000BTU or 3.5KW) is called so because the AC compressor is able to provide the equivalent cooling (or rather, heat exchange) of 1 ton (900kg) of ice. Hence, it should not make any difference if the AC is a split or window, or even if you use another method of heat exchange with the same tonnage rating (not a good example, but like an evaporation based desert cooler).

One caveat that I can think of is, as someone else mentioned, split ACs could possibly be made more efficient by keeping the compressor unit in a cooler/shadier place. I guess the same could also be achieved in a window unit if the outside portion of the AC is in shade instead of direct sunlight. In either case, doing this should result in more efficient cooling as the effort required by the compressor to do the heat exchange would be lower due to the lower temperature difference. Regardless of the type of AC, it would make a big difference if the room faces shade or sunlight during the day.

In any case, a 1 ton window unit AC should be sufficient for a 10x10 room. However, this calculation also depends on whether the room directly faces sunlight, number of people occupying the room (heat emanating from their bodies), and other heat sources in the room (electrical appliances). In general, for India, I guess the below can be used:

Compare India - Buying Guides - Airconditioners (Window) - Airconditioners (Window)

Room Size (Sq ft) - Tonnage Capacity
Up to 90 sq ft - 0.8 Ton
Up to 120 sq ft - 1.0 Ton
Up to 180 sq ft - 1.5 Ton
Up to 220 sq ft - 2.0 Ton
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  #56  
Old 7th April 2010, 02:33 PM
 
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Re: 1 tonne split airconditioner - need suggestions

@avidyarthy,

Thanks for the advice.

Hpw do I dentify a 3 bend evaporator design model ? I saw thes on the LG site. Are they the 3bend Eva models ?

LSA3CG5VF1

Capacity : 1.0 Ton

5 Star Rating
Jet Cool
3 Bend Eva


LSA3FP5VTY1

Capacity : 1.0 Ton

5 Star Rating
Jet Cool
3 Bend Eva


LSA3AB5VT1

Capacity : 1.0 Ton

5 Star Rating
Jet Cool
3 Bend Eva


LSA3ZP5VTY1

Capacity : 1.0 Ton

5 Star Rating
Jet Cool
3 Bend Eva
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  #57  
Old 7th April 2010, 02:35 PM
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Re: 1 tonne split airconditioner - need suggestions

hehe, thank you so much for this guidance......there's such a mass of opinion even among AC technicians and dealers that default size for a room is 1.5 TR.....and anything less is for really tiny spaces.

I actually decided against replacing my 9 year old Godrej 1.5 ton window AC (with a reciprocating compressor) in spite of it being full of problems simply because fixing it cost less than a new 1.5.......if i knew i could have managed with a 0.75 or a 1 TR i might have decided differently. I can still dump this in my other room and get a new 0.75 or 1 TR unit to replace this. Even after the repair the blower only functions on full speed and i can't switch it on or off on the unit, I have to do it at the power outlet! it's such a tragically bad machine (and it always has been, i whacked it from my in-laws a couple of years back because they had it lying around spare).

On reading your post I've read more on the net and I can't understand how "conventional wisdom" is so wrong-headed about this stuff!

Quote:
Originally Posted by avidyarthy View Post
TOTALLY AGREE HERE.
Whichever model you decide on, buy from the local authorised dealer. It is they who you can rely on 100% if anything goes wrong ..... all except the remote controller.

@ psycho ..... yes, a 10 x 10 room can easily be handled by a 0.75 TR AC, any type... split / window. But again, go thru my earlier mails on room parameters that you need to check
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  #58  
Old 7th April 2010, 02:44 PM
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Re: 1 tonne split airconditioner - need suggestions

you also mentioned that Haier is one of the good contract manufacturers, does that mean their Haier branded ACs are also worth a look?
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  #59  
Old 7th April 2010, 02:44 PM
 
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Re: 1 tonne split airconditioner - need suggestions

Hi avidyarthy,
You seem to know a lot about AC’s.

What are some pertinent features you look for when you shop for one tonne split AC’s ?

I got one from your earlier post. Anything more ?

A. 3 bend evaporator.
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  #60  
Old 7th April 2010, 03:23 PM
 
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Re: 1 tonne split airconditioner - need suggestions

Less on features........simpler the better.

There is a blue-fin or gold-fin coating on the condenser section ... am forgetting the terminology ....thats another ... prevents against environmental corrosion.

Sleep mode

Timer

Backlit remote

Temperature indicator ... either on remote or on evaporator.

Thats what I can think of. No need to pay extra for special filters and blah blah blah ..... all stop working after sometime in Indian conditions.

But, would definitely favour Hitachi 0.9 TR over LG, if price falls within your budget..... better built quality.

I have a US make Freidrich 1.5 TR heat pump (heat-cool) window and 2 nos. Chinese make Electrolux-India 1 TR Splits (heat-cool versions). Delhi requires such features due to climate extremes.


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