www.filtersusa.com Home Your Source for air Filters
Filter Brands Aprilaire filtersspacerBemis FiltersspacerBryant filters spacer Carrier furnace filters Emerson filters Hamilton Beach filters Honeywell filtersspacerSears Kenmore filtersspacerHunter Filters spacer
Trane filtersspacerBionaire filtersspacerBestAir Pro filtersspacerGeneral Aire filtersspacerHolmes filtersspacerGoodman filtersspacer Trion air filtersspacer Lennox filtersspacerVicks filters
spacer spacer
Air Filter Categories
Humidifier Filters  Whole House
Blue Dot  Portable Room Humidifier
Humidifiers  Furnace Humidifiers
Blue Dot  Portable Room Humidifiers
Blue Dot  Humidifier Parts
Blue Dot  Humidifier Water Treatment
Blue Dot  Questions & Answers
Blue Dot  Aprilaire Manual
Furnace Filters

 Click for Best Sellers

Blue Dot  1" Filters
Blue Dot  Whole House
Blue Dot  NEW Pop Up Filter
Blue Dot  Aprilaire Upgrade
Blue Dot  Room Air Purifier Filters
Blue Dot

 Return Grille Filters

Blue Dot  Window A/C
Blue Dot  Whole House Air Cleaners
Blue Dot  Room Type
Blue Dot  Air Cleaner Parts
Blue Dot  UV Germicidal Lamps
Vacuum bags and filters  Vacuum Cleaner Bags
Blue Dot  Vacuum Cleaner Filters
Refrigerator Water Filters  Refrigerator Water Filters
Industrial Filters  Industrial/Commercial
Dehumidifiers  Whole House DeHumidifier
Email the expert
spacer spacer spacer

How to replace your furnace filter

Question. Where is my filter located in my Furnace?

In general the furnace filter is located inside the blower compartment.

This will vary with the installation of the Furnace. The HVAC (Heating Ventilating and Air Conditioning) contractor can install an Air Cleaner Box, or cut a slot in the return air duct. There is a possibility that you're Furnace or Air Handler with have filters in the central return Grill. You do not want to install in both places. When changing the filters in the furnace compartment, ALWAYS turn the power off at the main circuit breaker.How to Change Filters

Up flow Furnace. (air moving upward) Filter is located in the blower compartment (bottom door) adjacent to the cold air return. You have to remove both the top door and then the bottom door. Make sure that when you re-install the bottom door, it goes over the furnace frame so that it engages the safety switch. If not the furnace will not run.

Down flow Furnace. (air moving in downward direction) Filter is located in the upper blower compartment. Most furnaces will have a V shape filter system; the system will take 2 filters. The filters go up into the plenum in a V shape. Make sure that when you re-install the top door, it goes over the furnace frame so it engages the safety switch. If not the furnace will not run.

Horizontal Furnace. Most Horizontal Furnaces will have a slide in Furnace rack, built into the furnace.

Air Handlers. In warmer climates some homeowners do not have a traditional furnace but rather air mover for air conditioning. Most Air Handlers will have a built in filter rack in the unit. Note most Air Handlers will have central returns, which have built in filter grills to accommodate a filter. Check to see that you DO NOT HAVE a filter in both the Air Handle and the filter grill. This will cause you reduced air flow and higher utility bills.

Note: Many customers us plastic deflectors to keep their drapes away from the floor vent and keep the warm air going across the floor. (Remember) warm air raises and cold air fall. REMOVE in the cooling season to have better cooling and lower utility bills.

Common Furnace Filter Installation

furnace filter

Changing your common style filter is simple. All you need to do is slide the old one out and slide the new one in. Be certain that the air flow arrow points toward the furnace or blower motor.

Please remember ... 99 ¢ filters do not work effectively. Click to shop our line of specially selected furnace filter products for your home.

accumulair filter

HEPA Style Furnace Filter Replacment

furnace filter cabinet
Place your mouse over the image to see a typical replacement.

Click to learn when you should replace your furnace filter.

Changing your HEPA style filter is almost simple. All you need to do is open the front of the media housing and slide the old one out and slide the new one in. Some models require pleat spacers. Don't forget to order them if yours are damaged.

FiltersUSA provides OEM (The Manufacturers replacement) and we offer economical generic replacements as well.

HEPA Furnace filters


Tell your friends about FiltersUSA!

Did you know - Use an exhaust fan when you shower will help reduce the humidity in your home.
Tell a friend about FiltersUSA.com!

FedEx Logo
Click for our FiltersUSA mobile site
To our valued customers: FiltersUSA.Com will provide
the BEST Customer Service and products in the industry!

Local Pollen Counts
Allergy Forecast
© 1999-2015


Air purifying and cleaning systems and equipment, filters
2938 State Route 752 * Ashville OH 43103

We will never give, lease or sell your personal information. Period!
All companies and logos are trademarks of their respective companies.
CONTACT US | Air Cleaner Purifier Humidifier Filters: Our Site Map
Call 847-669-3175
M-F 9 a.m. - 3 p.m. CST

Visa MasterCard Discover American Express
spacer spacer spacer

You are not logged in. Click below to sign in.

My Account

Customer service

Customer Service


Filters USA

Meet FiltersUSA

How to use our site

Shipping & Return Policy

Track Your Order

Common Questions & Answers

Questions &

Email the Expert

Privacy Policy

Look up your last order

Fax/Mail Order

Related Info

Furnace Filter Changing

How to convert your EAC to a Hepa system

How to change your furnace filter

HEPA Filters for allergies

Installing Humidifiers

Humidifier Questions and Answers

Carbon Monoxide Dangers

EPA Residential Air Cleaner Info

Truth about Ozone Generators

Be sure to clean your humidifier.

Use and Care of Home Humidifiers.

Common terms

Learn About Microban Technology

Learn About CarbonX Technology