How to select the best inverter air conditioner for Home and office use in 1.5 Ton category.

A typical air conditioner is an electrical machine from the family of HVAC systems, that is used to control and regulate heat and humidity from an enclosed area. Additionally, in modern-day air conditioners,  a salient feature of dust control is also provided sometimes. An air conditioner typically uses a compressor for vapor- compression refrigeration.

There are various types of air conditioners typically used commercially these days.

Central Air conditioners

To cool a large building/area having one or multiple rooms, a central air conditioning plant with preferably a liquid cooling agent like water is used in chillers. These units may be ducted or non-ducted as the case may be. 

Split Air conditioners

These are small air conditioner units meant to cool a small room or two. These air conditioners are having two units, an indoor unit, also known as an evaporator unit, and an outdoor unit known as a compressor unit.

Window Type Air conditioners

These are small air conditioners, used for cooling a small room and are having a single evaporation and compression unit, typically mounted on a window frame. These are ductless units.

Portable Air conditioners 

These are a type of split air conditioners where indoor units are portable and connected to the outdoor unit through flexible pipes. These air conditioners are generally installed in temporary structures 

Split air conditioners can be further divided into two basic categories as defined below on the basis of working principles.

Noninverter Air conditioners 

These air conditioners work on the principle of vapor compression refrigeration cycle using only non-inverter motors having single-speed and which operate at full speed till it stops when the desired room temperature is achieved. It automatically starts against when the room temperature drops below desired (set) room temperature. So these non-inverter airconditioners start and stop a number of times during whole working hours of the air conditioning unit and thus consume extra electricity at each start as starting current of air conditioners motor is sufficiently high.

Inverter Air conditioners

These are new technology air conditioners based on a different principle of working.  Air conditioner compressor motors use variable frequency sensors which control the speed of the motor according to the room temperature and adjust to variable speed. As the compression unit never stops and hence energy is saved as there is only a single start of the motor during each working hours.

Which is the best air conditioner--- Inverter or Noninverter

Keeping in view the soaring energy costs, it is advisable that one should buy inverter Air conditioners as these operate on 25-30 percent less energy and cools the room with minimum sound and vibration. Additionally, as the inverter Air conditioner uses variable-speed motors and its motor never stops, it cools the room at a fairly constant temperature throughout the working hours. But inverter air conditioners are a bit costly as the product is still not matured enough to bring down the costs. Moreover, as these air conditioners use complex circuitry and hence maintenance is costly. But these drawbacks are fairly taken care of by a very low energy bill.