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How to Install a Window Air Conditioner

Installation

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Don't have space to spare to install a wall-mounted AC unit? Go for a window air conditioner instead! A window AC unit is easy to install, and won't require you to drill through your walls to get that cool air running through your room. Plus, most AC units fit in double-hung, or sliding windows.

In this article, we'll provide a step-by-step guide on installing your window air conditioner easily and correctly. Follow our steps, and you'll be enjoying your window unit in no time! Check the video below for a step-by-step visual guide as well.

How to Install Window Air Conditioner: A Step-by-step Guide

Step 1: Measure Your Room and Window

First, measure your room to determine the average British Thermal Units (BTU) you need to purchase. This will help you purchase the right model size that will effectively cool your room. Consider purchasing a unit that has at least 20 BTU per square foot of your room.

Measure your window as well to gain the accurate space requirements for your window air conditioner. Window air conditioners are made to be simple and easy to install with just the space in your window - no extensive drilling or cutting needed! Get a window air conditioning unit that fits snugly in your window.

Step 2: Purchase Your Unit

Purchase your unit at a local and reputable store. A quality air conditioner dealer should be able to give you recommendations on the unit to purchase according to the measurements you jotted down earlier, and should be able to give you a reasonable price for your purchase. Some dealers offer free installation services as well, but this is not necessary for a window AC unit.

Consider the energy efficiency rating of the AC unit you're purchasing as well, as inverter units may save you energy costs in the long run. An energy efficient unit may be more expensive with a higher initial purchasing price as compared to a conventional unit, but it is less energy guzzling in the long run.

At Luce Aircon, we provide assistance to match you with the right brand, model, and size of air conditioner that best fits your room. One of our aircon professionals can provide options for AC units until you find the right window air conditioner that fits your room! We offer installations as well so you can remove the guesswork of installing a window AC yourself!

Step 3: Read the Owner's Manual/Manufacturer's Instructions

Once you've purchased your window unit, it is important to read the manufacturer's instructions before you start your installations. Chances are the owner's manual contains tips and guidelines to install your air conditioner, as well as a visual guide to help you install your particular model correctly.

The owner's manual will also show you the different do's and don'ts with your new window air conditioner. Following the guide in the manual will help you with the proper installation, as well as the safety guidelines of your air conditioner.

Step 4: Install the Steel Support Bracket

Now onto the actual installation: mount the steel support bracket right outside your window sill, just below the window frame. These support brackets will lift up the window air conditioner, and keep it tightly secured on your window. Air conditioners are considerably heavy appliances, and these brackets will provide enough support and stability for your unit.

Always tilt the support bracket at a slight angle facing downwards outside of your home. This will allow any condensation to drip from your unit outdoors instead of indoors. Use a power drill to secure the brackets at the correct angle.

Step 5: Place the Accordion Side Panels

Most units have accordion style side panels that fit most double-hung windows. These are adjustable to the window opening, and feature foam seal insulation that keeps cold air in, and hot air out. Position the AC unit in the center, and adjust until the accordion side panels evenly reach each end of the window frame.

If you have a storm window frame or mesh screen on your window, remove these first as they may obstruct the installation of your AC unit. Your window should be completely open for you to install a window AC unit.

Step 6: Center Your AC Unit

Center your AC unit, and let it sit on the steel support brackets to hold it in place. Align the pilot holes of your AC unit to the pilot holes on your windows, and keep it securely in place. This may be easier with an assistant or with someone holding the air conditioner in place as you drill the pilot holes.

Locate the middle pilot hole along the upper pane of your unit. Align the pilot holes of your unit to the ones on the window sash. Both the upper sash and lower sash should have alignment holes for you to install your air conditioner. Use the window sash as a guide to center your unit.

Step 7: Drill Pilot Holes

Use the provided screws from the installation kit, and drill the screw in to lock the air conditioner in place. Do the same to all pilot holes, and make sure each screw is tightly drilled in to prevent the window air conditioner from misaligning as you use it.

Step 8: Secure Your Window AC Unit

Align your steel brackets accordingly as you install a window AC. Make sure your unit's power cord can reach the nearest socket, and check all screws before operating your unit. Check the structural integrity of your steel brackets, and inspect for any loose screws, or pilot holes that were not drilled in. Secure your AC unit before using it.

DIY Video Tutorials

Try your hand at installing your new window AC. Here are some helpful videos on how to install a window-type air conditioner with step-by-step instructions so you can have a visual on the proper installation of your unit:‍

FAQs

1. Can I install a window air conditioner without brackets?

The short answer is yes. You can install a window air conditioner without having to install steel brackets. However, these brackets are mainly there as a support system for the otherwise heavy appliance, and will greatly prevent damages in case the screws holding the unit in place are loose or not secured properly.

2. How can I install a window air conditioner without a window?

You will need to measure out the exact size of your air conditioning unit, and cut out a section of your wall where you want to place the unit. This will require some construction know-how, and is not applicable for rented spaces where restrictions may apply.

3. What capacity room air conditioner should I get for the area of my room?

While a reputable dealer should be able to recommend the right BTU for your room, it is always better to know the recommended capacity for the size of your room. Refer to this chart for the recommended air conditioner capacity relative to your room size:

4. I don't have a power outlet near my window, can I still install a window air conditioner?

You can power your AC unit with an extension cord attached to the main power outlet. Make sure you do not overload the circuits by plugging in too many devices on one extension cord, and be sure the connection is stable by mounting the extension cord on the wall near your window.

Keep Your Cool

Inexperienced homeowners may feel frustrated at installing any type of air conditioning system, which is why we at Luce Aircon offer our installation, maintenance, and aircon cleaning services at your convenience!

Check out the rest of our aircon services today for more information.

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Staff Writer

Staff Writer

This article is written by our passionate staff writers who seek to share our knowledge from our business

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