How to Find the Air Filter for the HVAC System in Your Home I can’t find the air filter in the HVAC unit in the home we just bought. Do all central heating and cooling units have filters? All central heating and cooling systems should have an air filter, but the filter can be harder to locate on some HVAC units than others. The air filter is usually located in the return air duct or blower compartment before the return air reaches the air handler. This allows the filter to clean the air coming from your house before it enters the HVAC unit. Common locations for air filters in HVAC units include: On horizontal HVAC units with the return duct attached to the side of the air handler, the filter often fits in a slot on the return air (intake) side of the unit. On vertical air handlers with the return air duct entering on the top of the air handler, the filter often slides into a slot above the HVAC unit. On vertical air handlers with the return air duct entering below the air handler, the filter often fits in a slot located below the HVAC unit.

On other HVAC systems, the air filter may be located behind the return air grill on a wall in your home. On HVAC systems with a return in each room, there may be an air filter behind each of the return grills.ac unit for computer room Good luck with your project,hvac unit works HVAC System Heating and Cooling Maintenance Tips (video)carrier hvac parts breakdown How to Choose Air Filters to Reduce Indoor Air Pollution (article) Choosing Air Filters for Your Home (video) Using Clothes Dryer Sheets to Deodorize a Room Enclosed Blinds for Entry Doors How to Clean Dishwasher Spray ArmsOutdoor air conditioner units require regular maintenance. Properly cleaning your air conditioner outdoor unit extends its life and minimizes maintenance issues.

A clean air conditioner also cools the air more efficiently and can reduce energy consumption by up to 15 percent, according to Cornell University. Most outdoor units are easily accessible, which allows homeowners to perform maintenance themselves. Units perform best when cleaned twice annually at the beginning and again at the end of the summer cooling season. Locate and remove the air conditioner filter. Filter locations vary depending on your air conditioner, but they are usually found along the air conditioner return duct. If the filter is not located within the air conditioner unit, look for an access panel on the interior or exterior of your home near the air conditioner location. Wash reusable filters outdoors. Rinse them with a sharp spray of water from a garden hose to remove the dust and debris in the filter. Dispose of cardboard and fiber filters and replace with a new filter, since these are not reusable like the metal and plastic variety. Turn off the power to the air conditioner unit.

Usually this requires flipping the breaker switch assigned to the unit since most units don't have a separate on/off switch. Remove the top access panel on the unit. This is the panel with the vent openings. Locate the screws holding it in place and remove them with a screwdriver. Set the panel aside carefully without damaging the attached fan or fan wires. Examine the condenser coils on the inside of the unit for dirt, debris and dust. Vacuum the debris from the coils using a shop vacuum, taking care not to bend the fins and coils. Rinse the coils with water from the garden hose after vacuuming. Wipe the fan blades clean with a wet rag. Clear any debris from the fan vents in the panel. Replace the panel on the unit and screw it in place. Turn the power back on to the unit. Things You Will Need Replacement filter (optional) Garden hose Screwdriver Shop vacuum Rags Tip Warning References Cornell University Extension: Maintaining Your Air ConditionerUniversity of Nebraska: Time to Clean Air Conditioners and Heat Pumps Photo Credits Comstock/Comstock/Getty Images Suggest a Correction

Ships from and sold by NordicPure. Nordic Pure Carbon Window AC Unit Filter 14x48 Cut to Fit Sheet 3M Filtrete Air Conditioner Filter, 15-Inch by 24-Inch (9808-12) FREE Shipping on orders over $49. DetailsDuck Brand 1285234 Replacement Air Conditioner Foam Filter, 24-Inch x 15-Inch x 1/4-Inch, 1-Pack Add-on ItemFREE Shipping on orders over $49. Caron Window Air Conditioner Filter 14x48x Cut to Fit sheet by Nordic PUre. Our easy cut to fit sheet is an activated carbon that can be used in window or room AC units, air purifiers, or anything that you want to clean the air from odors. 4.1 out of 5 stars #65,570 in Home Improvements (See top 100) #35 in Home Improvement > Appliances > Air Conditioners & Accessories > Replacement Parts > Filters #5,818 in Home Improvement > Appliances > Large Appliance Accessories View shipping rates and policies See all 16 customer reviews See all 16 customer reviews (newest first) Great price, cut it yourself to fit, I approve!

Easy to cut to fit and is working..Carbon dust falls all over and a lot. Works very well in my window a/c unit to pre-filter the dirty air in the room before going through the standard filter and the air coming back is freshened and clean. Now that I purchased the Nordic Pure Carbon Window AC Unit Filters, I may not need them. My window units have a removable filter that can be cleaned and replaced. 3M Filtrete Air Conditioner Filter, 15-Inch by 24-Inch (9808-12) Duck Replacement Air Conditioner Foam Filter, 24-inch by 15-inch by 1/4-inch,... Duck Brand 1285234 Replacement Air Conditioner Foam Filter, 24-Inch x 15-Inch x 1/4-Inch, 1-Pack 1 X Cut-to-Fit Carbon Pad for Air Purifiers See and discover other items: air conditioner partsWhere are your air filters located in your home? Most central heating and air conditioning systems locate the air filter housing as close to the blower unit as possible in the return air duct. Air filtration happens as the blower draws air through the filter and feeds it into the furnace or AC unit for conditioning and circulation.

The grill or box cover over the opening that contains the air filter should be located on the wall nearest to wherever the furnace is mounted, on the opposite side of the wall as the furnace. If not there, the filter may be located inside, or on the air handler itself. How do I find out my furnace filter size? The opening behind the grate covering the furnace filter will typically be a basic square or rectangle shape. Your air vent filter size should match exactly to slightly smaller than the measured outside length and width of the frame around that opening. This is vital as missed matched filters can allow harmful particles such as pollen, dust mites, mold spores, pet dander, tobacco smoke and other contaminants to enter your house. Having an incorrect filter size is like not using a filter at all, which can have a bigger impact on your furnace and AC systems. Actual filter size is the critical dimension to measure and shop for. Most air vent filters match exactly with the size of the opening.

Vent filters that do not match exactly, are expressed in terms of nominal and actual filter sizes. Nominal filter size is the approximate size of the filter rounded up to the nearest whole inch. For example, a filter that measures 19 ⅝” x 19 ⅝” x 13/16” might be nominally labelled as 20 x 20 x 1. Need help figuring out your air filter size? Pull out your current filter and look on its side. Dimensions range from 10”x10” to 30”X36” and most, but not all filters are 1” thick, though some homes will have 2”-5” thick filters. What sizes does Quality Air Filters have? Some HVAC systems require eccentric shaped, and/or oddly sized air filters. Quality Air Filters stocks 75 standard sized air filters, and can make custom air filters to any size desired. The best part is that there is no minimum quantity requirement for custom orders. You can order just one custom air filter if that’s all you need. Additionally, Quality Air Filters can create custom delivery schedules that vary from just a one time order to every 2-6 months that best suit your air filter needs.