Window AC Buying Guide – Pros & Cons & Things to Look For

Window AC and Casement AC are the most popular types of air conditioners. They are both room air conditioners that use a single outdoor unit to cool and heat multiple rooms inside your home. Apart from this, they are also one of the most affordable choices for AC, without requiring too much installation space. You can buy Window AC and Casement AC in both portable and window-mounted versions.

It is a self-contained unit that installs in a window or through a wall cutout. A typical window air conditioner has an evaporator coil, condenser coil, compressor, fans, and thermostat mounted inside a cabinet. The cabinet slides into the window opening or mounts through a hole in the wall. To know more about the pros and cons of window AC, keep on reading today’s blog.

Pros of Window-type Aircon

Casement aircon works in the same way as window aircon – they use a single outdoor unit to cool and heat multiple rooms. The only difference is that the casement aircon opens like a window, while window aircons sit in a window frame. This means that a casement aircon can be installed without having to make any additional holes in your wall. Here are more benefits of choosing to buy window AC:

  1. They are efficient – Window AC units use less energy than most other types of AC, which means they’ll save you money on your energy bills. Newer models are even more energy-efficient that it’s almost like you also bought a split-type air conditioner.
  2. They’re small and compact – Window AC units are designed to be small and compact, so they won’t take up much space in your home. This is one of the most important benefits of this type of AC. When you transfer to a new place, you can easily bring and install your aircon with you.
  3. They’re easy to maintain – Window AC units don’t require much maintenance, so you can focus on enjoying the cool air instead of worrying about keeping your AC unit in working order. You can even do routine maintenance by yourself as all the essential parts are easy to dismantle.

Cons of Window AC

Despite its budget-friendly price, it’s also important to consider these possible cons when buying a window AC:

  1. They can be noisy – some people find that Window AC units are noisy, especially when they are first turned on. In some models, this noise can also go on throughout the whole time you are using your AC unit.
  2. They can cause drafts – if not installed properly, Window AC units can cause drafts in your home. This adds up to all the other maintenance you need to ensure your AC is in its top shape. This can easily be prevented with proper installation, though.
  3. They can be dangerous – Although extremely rare, if not installed correctly, Window AC units can fall out of windows, which can pose a safety risk for you and your family.

Things To Look For When Buying A Window Air Conditioner

So, if you are finally convinced that a window-type AC is the right one for you, here are some tips to help you choose the right one for you:

  1. Size – The first thing you need to consider when buying a window air conditioner is the size of the unit. You’ll need to measure the area where you want to install the air conditioner and make sure that the unit you choose is the right size for the space.
  2. Noise level – Window AC units can be noisy, so you’ll want to choose one with a noise level that you’re comfortable with.
  3. Energy efficiency – Window AC units can be energy-efficient or energy-inefficient, so you’ll want to choose one that will save you energy bills.
  4. Warranty – Most window AC units come with a warranty, so you’ll want to make sure that the unit you choose has a good warranty.

All these four can already give you the peace of mind that you get the most out of your money from your air conditioner purchase.


How to make your window air conditioner colder?

This may sound ironic, but one of the first steps to ensuring a cold aircon is never to set it at the lowest temperature. Not only will this damage your aircon in the long run, it can also take a longer time to cool the entire room since your unit will work extra hard to achieve the set temperature. To make your aircon colder, make sure that your space or home is sealed. Weatherproofing strips and blackout curtains will also help in achieving your desired temperature while also saving on your energy cost.

Should a window air conditioner be tilted?

Avoid tilting your air conditioner. Not only is it risky, as it may fall off, but this can also reduce its overall efficiency. Make sure to have it installed by a professional to avoid this situation.

Should I buy a portable AC or window air conditioner?

This will depend on your space and cooling requirements. But, a window air conditioner proves to be a more worthwhile, long-term investment, especially if you find an affordable model that is almost the same price as a portable AC.

How do you clean a casement air conditioner?

While professional aircon cleaning is always recommended, you can also clean your air conditioner by regularly removing and washing its filters. If the trap pad is accessible, make sure to empty it to avoid water leaking from your AC.


A window type of air conditioner is always a good start for the overall cooling of your property. This is particularly useful for smaller spaces as it requires less installation area. Although it’s not as efficient and quiet as a most inverter or split-type aircon, the latest window AC models now provide you with a better cooling experience. The important thing is to always know the right horsepower for the area where you will install it to get the most out of your purchase.

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