Is central air conditioning a good investment?

Is central air conditioning a good investment?

Central air conditioning (or central A/C) is a system in which air is cooled at a central location and distributed to and from rooms by one or more fans and ductwork. The work of the air conditioner compressor is what makes the whole process of air conditioning possible. The compression of the refrigerant gas enables it to discharge heat out of the house, which is how the cool air is created.

Isocool Central Air Conditioning Services 

At Isocool pty Ltd South Africa, we do air conditioner supply, air conditioner installation and air conditioner repairs in areas around Johannesburg which include, Johannesburg North, and Johannesburg South, Johannesburg West and Johannesburg East. Read on to learn more about central air conditioning.

Types of central air conditioners

Two types of central air conditioners exist: a split system or a packaged unit.

Split System

In a split-system central air conditioner, an outdoor metal cabinet contains the condenser and compressor, and an indoor cabinet contains the evaporator. In many split-system air conditioners, this indoor cabinet also contains a furnace or an air handler. The air conditioners evaporator coil is installed in the cabinet or main supply duct of this furnace or heat pump. If your home already has a furnace but no air conditioner, a split system is the most economical central air conditioner to install.

split-system central air conditioner
Split System

Packaged Unit

In a packaged central air conditioner, the evaporator, condenser, and compressor are all located in one cabinet, which usually is placed on a roof or on a concrete slab next to the house’s foundation. Air supply and return ducts come from indoors through the home’s exterior wall or roof to connect with the packaged air conditioner, which is usually located outdoors. Packaged air conditioners often include electric heating coils or a natural gas furnace. This combination of air conditioner and central heater eliminates the need for a separate furnace indoors.

packaged central air conditioner
Packaged Unit

Installation and Location of Air Conditioners

If an air conditioner is installed correctly, it should perform efficiently for years with only minor routine maintenance. However, many air conditioners are not installed correctly if a lousy contractor is hired to do the job. This is why you should use Isocool qualified technicians to avoid having issues that will cause your new modern energy efficient air conditioner to function as poorly as older inefficient models.

 Installation and Location of Air Conditioners
Installation and Location of Air Conditioners

There are several things to consider when installing a central air conditioning system, be sure that your contractor:

  • Allows adequate indoor space for the installation, maintenance, and repair of the new system
  • Ensures there are enough supply registers to deliver cool air and enough return air registers to carry warm house air back to the air conditioner
  • Installs duct work within the conditioned space, not in the attic, wherever possible
  • Seals all ducts with duct mastic and heavily insulates ducts
  • Locates the condensing unit where its noise will not keep you or your neighbors awake at night, if possible
  • Locates the condensing unit where no nearby objects will block airflow to it
  • Verifies that the newly installed air conditioner has the exact refrigerant charge and airflow rate specified by the manufacturer
  • Locates the thermostat away from heat sources, such as windows or supply registers.

In case you need expert advice and expert air conditioner technicians around Johannesburg then consider getting in touch with Isocool pty Ltd. A list of all the suburbs where Isocool operates is included at the end of this article.

Benefits of a central air-conditioning system

Let’s answer the big question, is central air conditioning necessary or why do you need it? To best way to answer this question is by exploring some of the benefits which central air conditioning provides.

  1. Indoor comfort during warm weather – Central air conditioning helps keep your home cool and reduces humidity levels.
  2. Cleaner air – As your central air-conditioning system draws air out of the rooms in your house through return air ducts, the air is pulled through an air filter, which removes airborne particles such as dust and lint. The filtered air is then routed to air supply ductwork that carries it back to the rooms.
  3. Quieter operation – Because the compressor-bearing unit is located outside the home, the indoor noise level from its operation is much lower than that of a free-standing air- conditioning unit.

Best Central Air Conditioner Brands

If you are looking to buy and install your central air conditioning system then there are few things you to consider before doing so. Not all brands offer the same robust and quality air conditioners. Amongst the different brands of central air conditioners out there, at Isocool we have come up with a list of our own brands that we trust after years working with them in the air conditioning industry. These exact precisions and are among the quietest and most energy-efficient units you can buy. Let’s explore them in detail.

Samsung Central Air Conditioner

Samsung Central Air Conditioner
Samsung Central Air Conditioner

The Samsung air conditioner excels across several categories, with an above-average cooling output and airborne moisture extraction rate, this unit performs to a high standard, while it’s slightly elevated efficiency score promises the user that the Samsung Central Air conditioner will save you money on your upkeep bills while in operation.

LG Central Air Conditioner

The average lifespan of an air conditioning system is 10-15 years. The LG Central air conditioner lifespan is the number one factor which put it at the forefront of our recommendation list since it stretches for an entire 15 years when all protocols are observed.

LG Central Air Conditioner
LG Central Air Conditioner

IQ Central Air Conditioner

IQ Air Conditioners commercial air conditioners are world-leaders in reliability, quietness and energy efficiency, and have a proven performance in the tough African climate and environment.

IQ Central Air Conditioner
IQ Central Air Conditioner

Jet Air Central Air Conditioner

These are designed for large and high rise areas like air ports, bus station, international exhibition hall, conference halls, shopping malls, etc. They have a long and high volume throw to allow them to cool these types of places. They are very silent when operating. The outside appearance has a beautiful and anodized finish to decorate the space.

Jet Air
Jet Air Central Air Conditioner

Carrier Central Air Conditioner

Carrier Central Air Conditioner
Carrier Central Air Conditioner

Transform your home into a Carrier Home with the refined Central Air conditioner. Carrier’s Central air conditioner system is amongst the most efficient and affordable budget-friendly models ranking high in the energy efficiency category.

Central air conditioners are amongst one of our most popular modern methods to keep cool in hot environments. If ever you need expert assistance concerning central air conditioning in Johannesburg then Isocool pty Ltd will have you sorted in no time.

Isocool provides air conditioning services in Johannesburg in the following listed areas


Darrenwood, Cresta, Northcliff. Melville, Randburg, Rosebank; Sandton; Rivonia;  Bryanston, Morningside, Inanda, Chartwell, Fourways, DouglasDale, Benmore Gardens, Sandton, Sandton City,Linden,Fairland,Norwood, Houghton,Saxonworld,Hydepark, Craighall, Auckland Park, Pretoria, Bedforview, Northclif,Bramley.Rosebank, Jan Smith Sandown


 East Rand; Kempton; Benoni, Boksburg, and Brakpan; Bedfordview; Edenvale; Greenstone; Linksfield


 Randfontein to Roodepoort, Krugersdorp, Carletonville and Westonaria, Soweto, West Rand


 Bassoni; Glenvista; Lenasia; Oakdene; Winchester Hills and Mulbarton;Aeroton; Belevue East; Aspen Hills; Bellevue;Berea;Betrans; Benrose; Braamfontain; Yeoville; Troyeville; Regents Park; Ormonde;Newtown; Mulbarton; Meredale; Malvern; Kensington; Johannesburg Inner; Hillbrow; Glenvista;Denver;ElandSpark; City Deep;Betrans; Grow Gardens;Droste Park; Fairview; Randview; Winchester Hills; Glendale; Highlands; Rosettenville;Turfontein; Kenilworth; La Rochelle; Mondeo; Oakdenea;The Hill;Tulisa Park;Selby; Vredeorp;Robertsham; Pageview;Nasrec; Moffatview; Marshall town;Linmeyer;Kibler Park; Fordburg; Elcedes.

In case of emergency with your air conditioner, get in touch directly with Isocool on this phone number, 078 922 2884 also available on Whatsapp.


Your comment will be published within 24 hours.


  • Animesh Triopathi
    20 November 2022, 7:51 am REPLY

    This is a great article and blog, one of the best I’ve seen in a long time. very informative artical must read.

  • callfastair
    30 November 2022, 3:26 pm REPLY

    Many people have a hard time telling their air handler apart from a furnace at a quick glance. It is usually a large metal box with sealed joints and a lid. If you have a large air handler, it might be a relatively big steel box with base rails to make it sturdier.

  • cullertonhvac
    27 December 2022, 5:18 pm REPLY

    Air conditioners circulate and filter air, removing pollutants and mold from the air. This is especially important for people who suffer from allergies and asthma because it minimizes the irritants that trigger an attack.


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