Together with your friend hold the unit up and slide it into a place in the frame. If your A/C comes with a foam seal, cut it to size and slip it in place. This compact model from Haier is one of the quietest and most energy-efficient window air conditioners on the market. Before you learn how to install a window A/C unit, you should gather some basic information. Excessive moisture can also create a breeding ground for dust mites and mold. Window mounted air conditioners are a quick and cheap to install. You may be able to find more information about this and similar content at piano.io, 25 Last-Minute Gifts and Stocking Stuffers, The Best Generators To Keep Your Home Running, 20 Painting Secrets the Pros Won't Tell You, Make a Gift: A Copper Bracelet With DIY Style, You Should String Lights on Your Tree Vertically. With the bottom window sash up as far as it'll go, center and insert the A/C in the window. Make sure the mounting brackets are level. If your window is a vinyl window, you can replace the clips by cutting strips of wood (paint stirring sticks are ideal) just long enough to wedge snugly between the sash and the top of the window frame. Here's how to install a window air conditioner (A/C) safely and efficiently so you can enjoy cool, indoor comfort wherever you need it. Plug the unit in, using an A/C extension cord if needed. You must also insulate the unit to keep the cold air outside, and the warm air in. Not all windows allow you to use L-shaped clips to hold the bottom sash in place. The air conditioner … Removing a window air-conditioner unit can be difficult, so unless you really need access to the window or want to create a better seal for winter, it's best to leave it in place and protect it with a slip-on cover. Air conditioners are deceptively heavy. Installation takes 10 to 12 hours, compared to 2 to 4 hours for a window unit. Before considering a unit for your room, you will need to determine how much space needs to be cooled. There’s no simpler, more affordable way to cool down a room than with a window-mounted air conditioner. Not every A/C fits every type of window. Install the Air Conditioner: Attach the included accordion panels to the sides of the air conditioner according to the instructions, and lift the air conditioner into place. While studying the AC, bring the window sash down behind the upper guide of the AC unit. ft. x 20 = 3,840 BTU). Most window-mounted air conditioners are designed to fit into double-hung windows, but most units can also be placed in swing-out casement or sliding windows. Determine whether your window is sliding, a double-hung or casement style. Step by Step. Slide the accordion panels onto both sides of the air conditioner. Start by reading the installation manual and familiarizing yourself with all the included hardware and fasteners. (Check with the air-conditioner manufacturer for specific installation instructions.) Weather, vibration and the challenge of lifting a heavy A/C unit onto a windowsill can knock an unsecured spacer out of position. Prepare the Window for Your Window A/C. To prevent the sash from being accidentally raised, insert at least two screws through the upper flange on the A/C case into the window sash. Most units work only in double-hung windows with a bottom sash you can raise and lower. And, should something go wrong with your window A/C unit, our Lowe’s protection plan has you covered. Cutting through an exterior wall to mount an air conditioner can cost up to $1,000 more than putting in a window AC. Place the air conditioner back into its original box, using the dense-foam packing material to protect it from damage. Position the air conditioner in the window opening so the spacers rest on the inside edge of the window frame and tilt the air conditioner backward slightly to force condensation outside. This will prevent any air from seeping in our out of the home. If the circuit is also powering other devices, even simple ones such as a hair dryer, you should consider adding a dedicated circuit, choosing another window near a different circuit or moving other appliances elsewhere. Mounting a Standard Air Conditioner in a Sliding Window (From the Inside, Without a Bracket): Many people have inexpensive air conditioners that are intended to fit into a double-hung (vertically sliding sash) windows and want to use them in horizontally sliding windows. Designed to quickly cool large spaces, this high-performance, 8,000 BTU LG window air conditioner is ideal for rooms up to 17 x 20 feet. Even small air conditioners are heavy and awkward to lift. After removing all the hardware, raise the lower sash and lift the air conditioner out of the window and set it onto a thick blanket spread on the floor. If you already have some of these air conditioners … And be sure to look for features such as digital temperature controls, variable fan speeds, and sleep settings, which also can help conserve power. How to Install a Window Air Conditioner 1 Completely open the bottom sash of the window, remove the window screen if there is one, and clean the sill and... 2 Prepare the extensions. If the same circuit powers other high-energy appliances—refrigerators, dryers, ovens—consider plugging in the air conditioner elsewhere. Link to Lowe's Home Improvement Home Page, How to Choose the Best Window Air Conditioner for You, Determine the window where you’ll install your A/C. That competition helps you, as manufacturers hold down prices and outbid each other to add features such as voice control, app control, hand-held remotes, timers, and features like a dehumidifier setting. Also, keep fire safety in mind when deciding where to install the air conditioner: Don’t place it in an egress window that serves as the only means of escape should a fire erupt. Now, pour yourself a cold glass of water while you wait for your newly air conditioned room to cool off. For a more finished look, you can install trim or molding around the unit to suit your taste. Close the window tightly to keep the unit secured in place and prevent it from falling or wiggling. Popular Mechanics participates in various affiliate marketing programs, which means we may get paid commissions on editorially chosen products purchased through our links to retailer sites. Gear-obsessed editors choose every product we review. Be very careful, as the A/C is prone to slipping off at this point. For example, a 12,000 BTU air conditioner that uses 1,200 watts of electricity has an EER of 10. How to Install a Window Air Conditioner Step 1: Remove Your AC and Find the Center of Your Window. ⚠️Don’t confuse EER with SEER—Seasonal Energy Efficiency Ratio—which is used to calculate the energy efficiency of central air-conditioning systems. Window AC unit; Screwdriver bit; Scissors; Tape measure; Drill with bits; Insulating foam; Now that you have all the tools and materials needed let’s look at how you can install a window AC for easy insulation. Build a jamb box of 1×6 pre-primed pine about 4 inches wider and 4 inches taller than the air conditioner required. (Note that in some cases you must install the extensions prior to setting the unit in the window; check the installation manual for specific details.) These compact units are reliable, durable, able to cool virtually any size room, and today’s models are exponentially more energy efficient than units built just 10 years ago. 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