are a number of quality issues when it comes to air
conditioners. A consumer should be ideally aware of
all of them if he is to make the right decision while
purchasing and maintaining his A/C.
Though there are many different types of air conditioning
systems they all consist of a pump, an evaporator,
a condenser, a working fluid, a thermostat and an
expansion valve. All these parts have to be in good
condition to ensure you get the best out of your air
The regulatory bodies like the ISO, ANSI and the BIS
(in India) strive to set high but feasible standards
which are essential to be complied with. For example
there are certain quality standards set for the industrial
and commercial air condensing units based on their
power ratings and the methods of testing. Then there
are quality standards even for the sound emission
levels of such equipment.
The ISO technical committees have certain safety and
environmental requirements. They relate to the safety
of persons, construction, installation, design and
operation of these types of systems. They have a detailed
classification of refrigerating systems and are applicable
to even the new refrigerating systems. And set a guideline
for the maintenance as well.
Quality tests are also held for the refrigerant compressors.
These test methods determine the refrigerating power,
capacity, efficiency as well as the coefficient of
performance. There also exists a universal performance
analysis system to compare various compressors.
As for the household air-conditioners tests are carried
out for both single-package as well as split system
air conditioners using both air and water cooled condensers.
Performance characteristics of such non-ducted heat
pumps and air-conditioners are carried out following
various test procedures. In a similar manner ducted
air conditioners too have their own set of tests and
All the individual components like the pumps, evaporators,
condensers, fluids, thermostats and valves have their
own particular tests to ensure the quality of these
components. These procedures span testing the operating
temperatures, working capacity and composition. Similarly,
there are tests regarding the design of the final
product as well to guarantee its compatibility.