Air Conditioning

I wrote this over the weekend….it should be useful if you are planning on air-conditioning your home.

Air Conditioners (ACs) are available in two form-factors,

a. Room AC – This is the traditional AC, where the cost ranges from Rs.8,000 to Rs.35,000 depending on the brand, features and tonnage.    

Window AC

Image Courtesy : alibaba.com

b. Split AC – Here the Cooling unit (condenser, coil+fan apparatus) are separated from the Room-unit (Blower & Exhaust), thus eliminating noise from the Cooling unit.  More importantly Split AC, allows you to install the AC at the place you require.  Also recent models have a good spacing between exhaust and blower allowing better cooling efficiency on the room.

 Split AC

Image Courtesy : germes-online.com

Having made up my mind on Split AC, I looked into Cooling capacity (measured in BTUs, or in simple language Tonnes), EER (Energy Efficiency Ratio), Fan speed, Filter mechanisms and Noise level. 

For an average Indian bedroom 0.75 Tonne to 1 Tonne should do, and for a hall 1.5 Tonne to 2 Tonnes are required.  For now we wanted to AC only 2 adjacent bedrooms and I was contemplating between,

a. Buying 2 Single-split systems of 1.5 Tonne each – Onida (Rs.24K, for Deco Flat model) & Samsung (Rs.24.5K for Turbo Compact model) which includes everything other than mounting brackets and installation.

b. Buying 1 Multi-split from Hitachi of 2.0 Tonne capacity (Atom2 at Rs.52,000)

 Though popular sales talk is to go for two 1.5 tonnes as it costs lesser than the 2 Tonne Multi-split and gives you the option of 1 unit working in case of machine failure, I opted for the Hitachi Multisplit for two reasons,

a. This system has a single compressor that can supply 2 Tonnes to one bedroom if the other bedroom is not used, this flexibility comes in very handy in Summer.  Also if you have a combo of a hall and a bedroom, its better to go for this system than having two 1.5T single splits.

b. Hitachi’s system comes with proven durability (5 years warranty and I somehow trust compressors Made in Japan than elsewhere) and has the best EER and lowest noise levels.

Anyway I would have considered inverter type air-conditioners (30-40% power savings) and a 5 split AC, as abroad.  But  since these systems are neither popular nor cost effective in India, had gone for Hitachi Atom2 for my bedrooms.

I have personally used so far – Carrier (5 split), General & Hitachi (room AC) and the experience has been very good so far, and hoping the same out of this Hitachi (2 split).

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Posted by on Oct 3 2007 Filed under Air Conditioner. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry
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