Thread: Window AC for 120 square feet North facing room

I need an AC for a room with windows to the North and no direct sun light on the other three walls..

The area is 120 square feet so I was wondering what capacity AC should I get..

I was looking at the .75ton Ogeneral AC but on O general India website it says its for up to 31 degree Celsius and the higher capacity ones say up to 52 degrees. Location is New Delhi so 48-49 degrees is what we get in May-June so I was wondering if anyone has used a .75ton Ogeneral in Delhi in a similar kind of room?

Any suggestions would be most welcome. Has any one used a 1.1ton Hitachi in a similar kind of room? I personally believe that a 1.5ton windows AC for such a small room would be an over kill and the humidity is also going to be an issue as compressor wont work for long enough to get rid of the humidity... what do you guys say?

Forgot to add that this room doesnt get any sunlight on the roof either as its a upper ground floor and there are two more floors on top.

Energy Saver model from LG recommended.
( No problem past two years )
Hitachi model ( room model 1 ton etc ) has been discontinued ,I think.

I have /use both. Will verify the
temperature limit from manuals and update later.

I was googling to see if I can find better energy effeciant .75ton AC and I stumbled upon this : Bluestar .75 ton with 10.97 EER

And the funny thing is that at Rs 12800 it costs a lot less then every other brand Ive been looking at.

Has anyone used this aircon the .75ton Bluestar-WAE-091Y ? How is the noise? Is it in any way comparable to the amount of noise Hitachi makes?

Common guys I need some serious advice today as I will but one in a day or two max. Delhi is getting "hot".

@essbebe I looked at the LG site but they dont have any called energy saver... probabbly changed name or discontinued in the last two years. What capacity is the one you've got? How is the noise?

Amtrex Hitachi (RAA09CP6 980W)
using this model RAA12CP6 1380 Watts
( Noise level low. )

2.
LGIntelloair ( with energy saver)
window 1.00 ton LWA12G2 DF1
( may be improved model/s now )
Fan does make noise sometimes in COOL mode. ( no maintenance! but tolerable ! calling CC !)
A/C can be set from 16C to 30 C for room temperature.
Model 1 ton LWA12G2 DF1 (with remote)
Easy steps to find out required AC tonnage. ( table given)
1 Ton model will be enough for your room.
room area 1001-2000 Cft 3
window 11-to 20 sqft 0
wall area exposed to sun 1
No of persons (2) 1
ceiling area not exposed to sun 0
Appliances in room 100W 2
Instead of ceiling Fan a Pedestal or table fan is suggested in an A/C room, if required.

Buy "Energy Saver" model
Usually the mechanic fits the A/C
parallel to Ground level. recommended a slight tilt for water to drain..

Originally Posted by Parminder

I was googling to see if I can find better energy effeciant .75ton AC and I stumbled upon this : Bluestar .75 ton with 10.97 EER

And the funny thing is that at Rs 12800 it costs a lot less then every other brand Ive been looking at.

Has anyone used this aircon the .75ton Bluestar-WAE-091Y ? How is the noise? Is it in any way comparable to the amount of noise Hitachi makes?

Common guys I need some serious advice today as I will but one in a day or two max. Delhi is getting "hot".

@essbebe I looked at the LG site but they dont have any called energy saver... probabbly changed name or discontinued in the last two years. What capacity is the one you've got? How is the noise?

In Pune, Bangalore and other towns where it does not get too hot, a 1 Ton AC would have sufficed. But in Delhi, I will recommend 1.5 ton.

Apart from price, the running costs, i.e., consumption will be same. Even if the 1 ton AC is rated at lower watts, it (the compressor) may run longer.

I will recommend the brands O-general or Hitachi only. If budget permits, go for a split model.

I bought the new AC today I got Hitachi RAV013EQDZ1
Its 1.1 ton Quadricool TM

This was the most energy effecient aircon in its class and the twin motor concept is pretty neat.

Bouth it from a new store that has opened near by and its called Vijay sales... I went there for the first time and I find it pretty huge as compared to any other home appliances store I have seen around here. They have stores in Mumbai, Navi Mumbai, Thane, Pune, Ahmedabad and Surat as well. This was my first ever visit to this store. My AC was delivered within 7 hours of making the payment Will be fitted tommorow morning. Will write a review on how it goes

Thanks guys for your suggestions appreciate it.

Forgot to add>> The price was Rs22600 with no stabiliser and I have arranged to get it fitted by some one who takes care of my aircons cleaning and stuff every year. Another shop was offering me a price of Rs21500 for the same thing but they could deliver it in 2-3 days and when they say 2-3 days its normally over a week so I settled for a higher price and prompt delivery

Congrats.
Any Room Temperature indicating meter
available ?
What is set in the A/C and
actual temp, say in middle of room varies.
Please confirm from the Dealer , pros and cons of
Using ceiling fan or Table/Pedestal Fan
in a room using airconditioner.
I was advised to use Table fan only.

Congrats.

Hitachi is a good brand. I have three AC's in my home - Hitachi 1.5 T window, Samsung 1T split and Samsung 1T Window. The Hitachi is over 9 years old and still giving excellent service with minimum maintenance.

Originally Posted by essbebe

Congrats.
Any Room Temperature indicating meter
available ?
What is set in the A/C and
actual temp, say in middle of room varies.
Please confirm from the Dealer , pros and cons of
Using ceiling fan or Table/Pedestal Fan
in a room using airconditioner.
I was advised to use Table fan only.

The one I have got does not show the room temperature.. unless its got some function I dont know about.

Dealers or sales guys normally know less about aircons as compared to an average customer.

The use of a fan brings in the wind chill effect which allows you to set your aircons temperature higher then normal. For example if you set it to 29 degrees and keep the fan on you will feel like 26 degrees due to the wind chill effect.

At night after 2 hours of sleep you would feel comfortable at 31 degrees as well because of the matabolism rate going down.... lesser the activity more the temperature you can bear or feel comfortable in.

Most people I know set their temperatures at 25 degrees and some people keep it at 23 degrees for god knows what reason... I normally set it at 27 degrees and that saves me thousands in electricity

Table fan or cieling fan doesnt make any difference unless you have a very high roof like more then 14 feet... My 120 year old home at my village has a 18 feet high roof and a table fan would be a better option as hot air would not get disturbed with a table fan but with a roof only 10 feet high it wont make any difference wether you use a table fan or a cieling fan.

Originally Posted by just4kix

Congrats.

Hitachi is a good brand. I have three AC's in my home - Hitachi 1.5 T window, Samsung 1T split and Samsung 1T Window. The Hitachi is over 9 years old and still giving excellent service with minimum maintenance.

Hitachi rocks makes a lot lesser noise...

The 1.1ton I got for this small room is doing a good job although the temperatures outside are not more then 42 yet but I feel it would work even with outside temperature at 48

Some small tonnage AC's do not have LCD displays indicating temp, etc. on the remote. But usually the main AC unit has a display. Then again, some companies eliminate the displays altogether to bring the cost down.

a) As you rightly pointed out, 27° C is fairly adequete in most cases. At most one can go down to 25° C but to me that is fairly chilly. I set the temp to 25° C only when I am really sweating.
b) At night, a +2° setting can be chosen. Many AC's have a night/comfort mode that does this automatically. I rarely keep AC on full night - can't stand it. Usually I switch it on around 10:30 pm when I go to bed and just after midnight I switch it off.

The 1.1ton Hitachi I bought has a display on the main unit as well as the lch display on the remote but it wont show the room temperature on either of them... I called up their customer care and they confirmed that it doesnt show the room temperature.

Its been a few weeks not and the amount of noise it makes is only a little bit lesser then other brands... Although the noise it makes while the compressor is not running is very low as compared to other aircons... but as soon as the compressor starts you can hear it loud and clear. If noise is an issue I think one should got for a split unit only and they are in some cases more energy effecient some of them being 5 star rated as well.

Hitachi has a sleep mode thing called diamini or something like that and it increases the room temperature by one degree every one hour from the moment you turn it on for 4 hours after that it remains constant and when you wake up you still feel comfortable.. Other aircons I have do not have this feature. The other ones have got sleep mode but I have no idea what it does...

Originally Posted by Parminder

...
Its been a few weeks not and the amount of noise it makes is only a little bit lesser then other brands... Although the noise it makes while the compressor is not running is very low as compared to other aircons... but as soon as the compressor starts you can hear it loud and clear. If noise is an issue I think one should got for a split unit only and they are in some cases more energy effecient some of them being 5 star rated as well.

Window AC will always make more noise. I will always recommend a split AC if one can afford it. But then again, the cost difference in similar tonnage models may not be more than Rs. 5,000. If the room window does not provide for fitting a window AC then you will have to build the casing to install the AC. That cost (Rs. 3,000) will offset some of the higher cost of the split model.

Originally Posted by Parminder

Hitachi has a sleep mode thing called diamini or something like that and it increases the room temperature by one degree every one hour from the moment you turn it on for 4 hours after that it remains constant and when you wake up you still feel comfortable.. Other aircons I have do not have this feature. The other ones have got sleep mode but I have no idea what it does...

It is Kiamin. Others have sleep mode. In the sleep mode, the temperature is raised by 2° after a couple of hours.

@ Parminder bhai: How is the performance of your AC in the Delhi heat? Was the 1.1 tonne sufficient for your 120 sq ft room? I've similar requirements in similar conditions. Also, I've to buy two window or split ACs. Will check on the central Air-conditioning now. Just to see how much the setup and electricity will cost.

I noticed that it has been exactly one year since you started this thread. India is getting hot again!

The 1.1 ton window hitachi I bought last year did pretty well and I have no complaints.

Originally Posted by itsmemad

@ Parminder bhai: How is the performance of your AC in the Delhi heat? Was the 1.1 tonne sufficient for your 120 sq ft room? I've similar requirements in similar conditions. Also, I've to buy two window or split ACs. Will check on the central Air-conditioning now. Just to see how much the setup and electricity will cost.

I noticed that it has been exactly one year since you started this thread. India is getting hot again!

Dude, central airconditioning is for shopping malls and high rise building, not for small rooms of 120sq.ft. I'd suggest that you go for the VRF based ones, if you want to get those "hotel" looks in you home! One outdoor unit of 5HP will do the work fine!!

One outdoor unit of 5HP will do the work fine!!

Usually for electric motors.
.
http://www.naaptol.com/buy-online/WO...e-W74O/74.html

Airconditioners rated in ton 1.0 1.2 ton 1.5. ton. etc.
one ton is equal to 12000 BTU.
2.

A simple calculation is as follows

Multiply the length, breadth and height of the room (take units as feet). Then divide this by 1000 to get the ton capacity

Example if the room’s size is 10 feet by 10 feet by 10 feet

So 10 X 10 X 10 comes out to 1000, divide this by 1000 the answer comes to 1. So your as tonnage requirement is one ton

Another example room size 12 feet by 12 feet by 9 feet. The multiplication comes out to be 1290. Dividing this by 1000 leads to 1.2. so tonnage requirement is 1.2 ton. If there is direct sunlight in the room and /or the air conditioner is exposed to sun, or you stay on the top floor where roof heats up, go for 1.5 tom AC otherwise go for 1 ton AC as air conditioners are available in 0.75 ton. 1 ton and 2 ton and above capacity only
http://www.living.pushpi.com/air-conditioner-ton.htm
Airconditioners rated in ton 1.0 1.2 ton 1.5. ton. etc.