April 12, 2024
Learn how to install a window AC unit with this beginner's friendly guide. Avoid common mistakes, choose the right size, and maintain your unit properly. Compare with other cooling systems and find out the top-rated models on the market.


Are you struggling to beat the heat in the summer months? One of the most effective ways to cool down your indoor space is by installing a window AC unit. However, with so many models and brands on the market, it can be tough to know where to start. That’s why we’ve put together this step-by-step guide on how to install a window AC unit for beginners. Follow our instructions, and you’ll be enjoying cool indoor air in no time!

Step-by-Step Guide on How to Install a Window AC Unit

First things first, before you start installing your window AC unit, you need to make sure you have all the required tools and materials. You’ll need a drill, tape measure, screwdriver, level, and support brackets for the unit. Make sure to double-check the instructions provided by the manufacturer to ensure you have all the necessary components.

The next step is to find the right window for your unit. Look for a window that is near an electrical outlet and can be secured with support brackets. Measure the dimensions of the opening, so you know what size unit to buy. Keep in mind that an AC unit that’s too small won’t be powerful enough to cool your space, while one that’s too big will waste energy.

Once you have your unit, follow the manufacturer’s instructions to install the support brackets. Then, slide in the AC unit from the exterior of the building. Make sure it’s centered and level, and use screws to secure it to the brackets.

Common Mistakes to Avoid When Installing a Window AC Unit

Now that you know how to install a window AC unit, let’s talk about some of the common mistakes that you should avoid. First, make sure to measure your window accurately, so you don’t end up with a unit that’s too small or too big. Next, check your electrical system’s capacity to ensure it can handle the AC unit’s power requirements.

Finally, make sure to properly seal the unit to prevent any air leaks. Use foam insulation or weather-stripping to seal any gaps between the unit and the window. This will help improve the unit’s energy efficiency and cool down your space more effectively.

Beginner’s Guide to Window AC Units

If you’re new to window AC units, you might be wondering what size unit to buy and where to place it. Generally speaking, you’ll need about 20 BTUs (British Thermal Units) of cooling power per square foot of indoor space. So, for a 200-square-foot room, you’ll need an AC unit with around 4,000 BTUs.

When it comes to placement, look for a window that’s on the north or east side of your home. This will help keep direct sunlight from entering the room, which can make it more challenging to cool down. Additionally, make sure to keep any curtains or shades closed during the hottest parts of the day to block out the sun’s rays.

Finally, make sure to maintain your unit properly. Clean or replace the air filter regularly, and keep the unit’s exterior free of dirt and debris. This will help improve the unit’s efficiency and prolong its lifespan.

How to Properly Remove and Store Your Window AC Unit When Not in Use

Once the summer months have passed, you might be wondering how to store your window AC unit properly. The first step is to clean the unit thoroughly before storing it. Use a soft cloth to wipe down the exterior, and remove any dirt or debris from the air filter.

Next, make sure to protect the unit from moisture and pests. Store it in a dry, cool location, and cover it with a waterproof sheet or tarp. You can also use pest repellent to prevent rodents or insects from making a home in your unit.

Comparing Window AC Units Versus Other Types of Air Conditioning Systems

While window AC units are an effective and affordable cooling solution, they’re not the only option out there. Other common types of air conditioning systems include central AC, portable AC units, and ductless mini-split systems. Each type has its pros and cons, depending on your cooling needs, budget, and home layout.

For example, central AC is a more expensive but convenient option for larger homes. Portable AC units are great for renters or those who aren’t handy with DIY installation. Ductless mini-split systems offer zoned cooling and are energy-efficient but come with a higher price tag.

Review of the Best Window AC Units on the Market

To help you find the best window AC unit for your home, we’ve put together a list of our top-rated models. These units have been selected based on their cooling power, efficiency, price, and customer reviews.

1. LG LW6017R – This 6,000 BTU unit is best for small rooms and comes with a remote control for easy temperature adjustments.

2. Frigidaire FFRA0511R1 – This 5,000 BTU unit is perfect for small rooms and features a washable antimicrobial filter for improved air quality.

3. GE AHY08LZ – This 8,000 BTU unit is great for medium-sized rooms and has a programmable timer and energy-saving mode.

4. Friedrich Chill CP06G10B – This 6,000 BTU unit is ultra-quiet and has a 24-hour programmable timer for your convenience.


Installing a window AC unit might seem like a daunting task, but with our step-by-step guide, you’ll be a pro in no time. Remember to measure your window accurately, choose the right size unit, and properly maintain it for optimal performance. And for the best results, take the time to compare different AC units and find the one that suits your needs and budget best.

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