PROD­UCT SUR­VEY

In­verter Air Con­di­tion­ers

Consumer Voice - - Contents -

High on en­ergy ef­fi­ciency

Com­ing straight to the point, in­verter air con­di­tion­ers are rel­a­tively ex­pen­sive but offer sev­eral ad­van­tages. An in­verter AC runs the com­pres­sor at dif­fer­ent speeds ac­cord­ing to the am­bi­ent tem­per­a­ture (it con­trols the tem­per­a­ture by slowing down or speed­ing up as re­quired, do­ing away with the need to start and stop con­tin­u­ously), and there­fore stacks up well on en­ergy ef­fi­ciency when com­pared to a non-in­verter AC. Choos­ing it over other con­ven­tional ACs may seem to be a smart de­ci­sion. But at the best of time and with the best of in­for­ma­tion and bud­get, mak­ing the fi­nal choice can still be a chal­lenge. What is best? The best ac­cord­ing to your need, want, bud­get and pref­er­ence, or the best gen­er­ally speak­ing, or the best ac­cord­ing to the environment? Other practical con­cerns can run the gamut from size and cost to ca­pac­ity and noise, and af­ter-sales ser­vice as well. Here is a com­pi­la­tion of all the things that you would want to know be­fore mak­ing the all-im­por­tant buy.

Firstly, is it in­verter or non-in­verter for you? And are the basics of both clear enough? In an in­verter AC, the com­pres­sor (fit­ted in the out­door unit) is pow­ered by a vari­able-speed drive or ‘in­verter’ that en­ables the com­pres­sor to run at a range of speeds from slow to fast, to match the out­put re­quired. An in­verter unit will grad­u­ally in­crease its ca­pac­ity based on the ca­pac­ity needed in the room to cool down or heat up the room. This means the com­pres­sor doesn’t need to switch on and

off con­tin­u­ously, but in­stead just speeds up or down as need de­mands. By not ac­tu­ally hav­ing to stop and start sev­eral times a day, there’s less stress on the com­pres­sor and less elec­tric­ity is used, which is why in­verter mod­els are gen­er­ally more ef­fi­cient and cost less to run. They can main­tain a set tem­per­a­ture within a nar­row range. Most split sys­tems on the mar­ket these days are in­verter mod­els.

Most con­ven­tional com­pres­sors run at a con­stant speed and these types of units vary their ca­pac­ity by switch­ing on and off at dif­fer­ent in­ter­vals. Switch­ing on this type of unit will start to run on full load. This can cause more wear and tear on the com­pres­sor and uses more power to start up each time. These mod­els aren’t as ef­fi­cient to run as the in­verter mod­els, but can be cheaper to buy.

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