Show All ItemsI can't take responsibility for your installation, theft, break ins, and your A/C falling out of your window. Step 1: Materials required:Show All Items The unit I am working with is a Haier 8000 BTU from Walmart. Yours might be different but the idea is the same. 1/4" Rubber Foam Weatherstrip Plexiglass - Home Depot Screws, self drilling, 1/4" C-channel Aluminum pieces 3/8' and 1/2' sold in 8' length Silicone - Home Depot Nut Rod Coupling  and a screw that fits.« PreviousNext »View All Steps DownloadInstalling an air conditioner into a horizontal window, which is a window that slides left and right instead of up and down, is similar to installing an air conditioner into a vertical-sliding window. Horizontal-sliding window air conditioners are commonly called slider air conditioners or slider casement air conditioners. Before buying your air conditioner, measure the window opening, so you know how wide of a unit you can install. Choose the window where you’ll install your air conditioner.

The window should be within reach of a three-pronged outlet. Plugging your air conditioner into an extension cord may not provide enough power to the unit. Slide the window open. If the windowsill is old, weak or shows signs of damage, it may not be able to support the weight of the unit. Replace the windowsill or select another window. Cut a strip of weatherstripping the same width of the window opening. Remove the adhesive backing from weatherstripping and position on the windowsill so that the unit will be on top of it when in place. Press the weatherstripping firmly to help it stick to the windowsill. Attach the support bracket to the windowsill with screws using an electric drill or screwdriver. The top of the bracket should tilt back slightly, between 1/4 inch and 1/2 inch, so that when the unit is in place, it will also tilt back, letting rain easily slide off of it instead of pooling on top of it. The directions that come with your air conditioner will indicate how to assemble the bracket, if it does not come pre-assembled, and where along the windowsill to install the bracket.

Most brackets are installed somewhere in the middle of the sill to best keep the unit from falling out on one side or the other. Attach the support bracket to the exterior siding with screws using a screwdriver or electric drill. Depending on the size and weight of your unit, the exterior portion of the bracket may attach directly beneath your windowsill or further down the siding beneath the window. Assemble the air conditioner if necessary. You will likely need to attach air conditioner guides along the sides and top of the unit. These guides will attach with screws, but special tools you need, like a hex wrench, will come with the unit. The guides essentially frame the unit and provide a place for a plastic curtain component. Measure the length of the side guides and cut weatherstripping this same length. Remove theadhesive backing from weatherstripping and attach to the back of the side guides. When the unit is in place, these side guides and the weatherstripping will help create an airtight seal.

Measure the height of your sliding window and subtract the height of your unit. You will cover this gap with a plastic curtain, which will come with the unit. ac window unit on saleCut the plastic curtain with scissors, so that, once attached to the unit, the curtain will cover any gap between the unit and the top of the window frame. how much cost to clean ac unitFor example, if the unit is 40 inches high and the window opening is 56 inches high, then cut the plastic curtain so that it is 16 inches high. best deals on hvac unitsSlide the curtain into separate curtain frame, which comes with the unit, and attach curtain frame to unit, sliding the frame legs into the side guides. You may need to use screws and a screwdriver to attach frame to unit, though it may also just slide into place.

Slide air conditioner into window opening until it rests against the support bracket and is flush against the side window jamb. Ask someone to help you, since the unit will be heavy. Bend at the knees when you lift the unit into place. Make sure the unit is evenly positioned in the window opening and supported by the bracket. Screw the bracket to the air conditioner using a screwdriver. Doing this from the outside of your home will likely be easier than trying to work around the unit while inside your home. The bracket will attach by one or more screws to the back of the unit. Drill holes through the unit’s bottom guide into the window track. Insert screws into holes and screw in, attaching the bottom of the unit to the window. Attach the curtain frame to window jamb with screws, pre-drilling holes with an electric drill and using screwdriver to screw in screws. Line up an L bracket, which comes with the unit, in the lower corner of the window, where it meets the jamb. Drill a hole through the hole of the L bracket and into the window frame.

Place screw in hole and screw into place. This L bracket will stop anyone from opening the window from the outside. Things You Will Need An assistant Measuring tape Scissors Screwdrivers (Phillips and flathead, though you may only need to use one type during your installation) Wrench (though you may not need, depending on the hardware that comes with the air conditioner) Slider casement air conditioner, which will include necessary hardware and support bracket (you can also buy support brackets separate from the air conditioner at most home improvement stores) Electric drill Ladder (optional) Weatherstripping Tip References Frigidaire: Installation Instructions: Slider Casement Air ConditionersFrigidaire: Installation Instructions: Slider Casement Air Conditioners Suggest a Correction Selection for all your Kitchen needs; from pendant lights to appliances, cookware and more. Frigidaire FRA084KT7 8,000 BTU Casement/Slider Room Air Conditioner with Full-Function Remote Control (115 volts)

23 x 14.2 x 20.2 inches 4.3 out of 5 stars #784,999 in Home and Kitchen (See Top 100 in Home and Kitchen) #278,399 in Home & Kitchen > Kitchen & Dining See all 46 customer reviews See all 46 customer reviews (newest first) Keeps our bedroom nice and cool almost a year later and still working, its on all the time and no issue with it Very good air conditioner! I've had an older version (FAK085R7V) of this for 8 years and it's been great, BUT, there's something that I've learned that others should know. It is very difficult to find an ac for windows that open side to side. I bought this ac three years ago and we use it 24/7 during the weekend, and about 12 hours for each day... It's been 30 years since I've owned a room air conditioner so I was surprised at all the 'bells & whistles' on this one, and they are very helpful. good and on timeMounting is a pain. Figure out where the mounting shelf needs to be yourself. Different windows have different side jam reveals.