How to Install a Window Air Conditioner

Stay Cool in the Summer

Bill Hanks
Everyone likes to live in a controlled indoor environment, during the summer. A window air conditioner can go a long way, in providing the comfort that you need. This article will tell you how to install a window air conditioner.

Step 1. Decide where you want your air conditioner to be located. Make sure that you have the proper plug in, for the size of your conditioner. Most air conditioners operate with a three prong plug in.

Step 2. Measure your room and window. You want to make sure, that the air conditioner will fit and do the job that is needed. Larger rooms, especially with high ceilings and multiple doors and windows, will require larger and more expensive air conditioners.

Step 3. Make sure that your brackets and air conditioner are mounted securely in place. In some windows, you might need a piece of plywood or particle board to mount your air conditioner or brackets on. You might want to paint this board first. Water stains and untreated boards can look bad to the eye. Use a level, when mounting your brackets. Use wood screws for wood and metal screws for metal window sills.

Step 4. Open the window wide and set the air conditioner in place. Follow the instructions for the bracket. If the unit is too heavy, get another person to assist you with it's placement. Some air conditioners will snap into a pocket underneath. this locks it into place.

Step 5. Close the window and pull out the extensions on both sides. Once they are secure, fasten them to the sash.

Step 6. Use a piece of foam to fill the gap between the sashes on the two windows. Many times this is provided with the air conditioner.

Step 7. Caulk the outside with white or clear caulk. Leave no air spaces open. Even if it looks like you don't need it, caulk it anyway.

Step 8. The last step is to read the manufacturers book on operation and maintenance. Like all items, you will need to perform maintenance from time to time.

Step 9. Plug it in and set your comfort level dials.

Finally, listen to your air conditioner. If you hear any rattling, it could be loose screws on the side. When you feel the cool air, you are finished.

Published by Bill Hanks

Just an average Joe living in the Midwest. I am a retired High School teacher/coach. I work part time for a small college. I am president of our local Kiwanis club. I am also a city alderman. But, most of...   View profile

9 Comments

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  • Kristie Leong M.D. 4/6/2010

    Useful information, Carl. :-)

  • Jody Morse 4/5/2010

    Good info!

  • Agnes Farside 4/5/2010

    I remember those...great topic.

  • Vonda J. Sines 4/5/2010

    If you live in a development, it's a good idea to ask first if window ACs are permitted. They aren't in ours.

  • Pattie Byrd 4/5/2010

    Great instructions.

  • Kay Balbi 4/4/2010

    I like that the second to the last step was reading the instruction book - good to know this stuff!~

  • Jack Wellman 4/4/2010

    This is so timely Carl. I'm a wimp in the heat & plan to install an AC window unit in my garage where I tinker...no, I mean work. Thanks, good time and advice. :-)

  • Dina Quirion 4/4/2010

    Excellent... :o)

  • Patti Walden 4/4/2010

    Cool! (Pun intended.) Greart How-to article.

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