Wholesale Furnace Filters

Free Shipping on All Furnace Products!

Free Shipping on All Furnace Products!

Welcome to Furnace Filters Outlet. For over 10 years we here at Furnace Filters Outlet have been helping families live healthier lives by using top quality NordicPure MERV 12 air conditioner/ wholesale furnace filters. Our MERV 12  filters are manufactured in the good old USA. We ship from our 50,000 sq ft warehouse in Tulsa, OK.



Why choose our MERV 12 filters. MERV 12 requires 80% or better air filter efficiency on 1 – 3 micron particles and a greater than 90% air filter efficiency on 3 -10 micron airborne particles when tested in accordance with ASHRAE Test Standard 52.2 used in testing air filters and air filter efficiency. Our air filters measured 97.8% air filter efficiency in removing airborne particles 3-10 microns in size, 84.1% air filter efficiency in removing airborne 1-3 microns in size and 60% air filter efficiency for smaller particles. How many other brands tfiltersell you the efficiency of their filters.

Air filters above MERV 12 generally require larger, more expensive HVAC systems not normally intended for traditional home or smaller office heating and air conditioning systems. This is due to the “drag” imposed on the HVAC system. HVAC professionals who buy from us daily highly endorse the MERV12 rating as providing the highest efficiency of an air filter while not overtaxing the HVAC system.

Our MERV 12 air conditioner filters do not allow the growth of mold or bacteria, keeping your home healthier. No harsh chemicals are necessary to make the filter “antibacterial”. Our filters use permanently charged electrostatic material that helps dust cling to the filter.

We strive for the best customer service in the industry. If you need to contact us please feel free to email us at sales (at) furnacefiltersoutlet.com This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Our normal response time is less then 24 hours.


Click on our air filter sizes below to see prices and order:

1 inch Furnace Filter / Air Conditioner Filters
10x20x111½ x11½ x112x12x112x18x112x20x112x24x114x20x114x24x114x25x114x30x115x20x116x16x116x20x116x24x116x25x118x18x118x20x1

2 inch Furnace Filter / Air Conditioner Filters
10x20x212x20x212x24x214x20x214x24x214x25x215x20x216x16x216x20x216x24x216x25x218x18x2, 18x20x218x24x218x25x220x20x220x24x220x25x2, 20x30x224x24x224x30x225x25x2

4 inch Furnace Filter / Air Conditioner Filters
12x24x416x20x416x24x416x25x418x24x420x20x4, 20x24x420x25x424x24x4

5 inch Honeywell Replacement Furnace and Air Conditioning Filters

How To Install A Furnace Filter The Easy Way

High Efficiency Furnace Filters Work More Effectively


If super efficiency and effectiveness is what you’re looking for; then, you should go for high efficiency filters. You can benefit a lot from a high efficiency filter in spite of the fact that it may cause a little increase in your electricity bill. Not to mention, they cost higher than ordinary filters.

There are some important things that you should consider before buying a filter. If you want to have the one with the best quality, you should make a comparison first of each brand. Take a look at the protection label and find out which among them have the smallest

micron rating. If the rating is at least 0.1, that means this certain filter can sift around 99.97% of dust and other microscopic particles. If you can find something which is rated below 0.1 the better.

Upon installing a high efficiency filter, you will feel the big difference in the atmosphere inside your home. The air that you breathe is fresher as it will contain less impurity the moment that the filter was installed. It will not contain dust mites, pollen particles, mold spores and pet dander. This will also mean there will be zero threat to your family’s health.

Another thing to look at when purchasing a filter is the size of your room. If you have a huge room, it is advisable to buy one with a higher configuration. If the size of your room is 350 sq. ft.; then, you should buy something which can purify air for a 450 sq. ft. sized room.

When you have a high efficiency filter, make it a point that you clean it based on the given recommendations and instructions.

Its life will depend on how you take care of it; therefore, it is quite important to give it proper care and maintenance.


Every manufacturer has its own guidelines for consumers. Read these guidelines carefully so that you will know what things to do and what you should not to make the life of the filter longer. It is also advisable to change it after 3 to 6 months to keep the furnace working efficiently.

Annual Furnace Filters Maintenance – How To Do It Yourself

  • Regular maintenance of your heating system is important. Ideally, you should do this every year before you have to turn it on in time for the cold season.
  • As is usually the case, you will be advised by heating contractors and furnace manufacturers to hire the services of a qualified HVAC technician to do a routine check of your furnace. An HVAC technician, after all, is trained in this kind of thing, so he can spot defects that are not seen by an untrained eye.
  • Of course, though, you can not just totally depend on your HVAC technician. You can do simple maintenance work in order to keep your furnace working properly and/or prevent further damage.
  • First and foremost, if you are using propane or natural gas, you must shut off the gas and power supplies before doing anything else. Testing the furnace with the gas and power on is something that should be done by a trained technician.

The most that you can do to maintain your furnace is to change the filter with preferably a high quality pleated style filter to replace your old one. You must make sure, though, that your replacement is compatible with your existing filter. Although high-end filters usually last longer, it may still be necessary to check your filter on a monthly basis.

Another thing you can do is to check the intake and exhaust pipes of your furnace and make sure they do not have trees and shrubs growing into them. Try to remove the pipes and see look for obstructions, like leaves, maybe or something else.

It may also be a good thing to check your wires for any loose or shorted connections. The plug harness connections must be tested to ensure that they are not loose. You can vacuum the blower compartments as well as the burners so as to keep them from getting contaminated. Your blower motor must, too, be checked if it needs oiling, in which case, you must get the services of a service technician. Usually, the blower assembly will have to be removed so both sides can be oiled.

Heat is trapped when there is a blockage in the drain system of your furnace. Instead of calling your technician, try treating the problem with household bleach. Usually blockage occurs when the drain hose and drain trap have bacteria growing into them, restricting the flow of condensation through the drain system. Using household bleach can kill the bacteria along the drain lines.

Cleaning the burners and the flame sensor and checking the heat exchanger require the services of a trained technician. At the same time, ask your technician to look at the check pressure switches and the limit controls. You can ask your technician as many questions about your furnace as you want. Knowing many things about your furnace can help you treat simple problems yourself, and this can save you a lot of money in the long run.

The Importance of Replacing Your Filter

You must have already heard of stories of people dying in their sleep because of carbon monoxide poisoning. Before you think this cannot happen to you, think again, because carbon monoxide poisoning can happen to anyone and it can occur to any home that has a filter that is not being well maintained at all.

Any furnace manufacturer would recommend the frequent changing of your filter in order to keep the dust from accumulating which can impede the normal flow of air.

As you must know, furnaces powered by gas and oil are so designed to require a certain amount of air flow which is measured in CFM or cubic feet per minute in order to operate properly and efficiently. These furnaces have a heat exchanger (the walls of which are so thin but not thin enough that it cannot withstand the heat) which has flame as the heat source inside and air on the outside. The air passing over the heat exchanger picks up the heat from the inside.

If you allow the filter to stay in the system for a very long time without ever replacing it once can impede the normal air flow, and this can be very dangerous because with less air flowing over the heat exchanger there is a resulting rise in the operating temperature of the heat exchanger. The heat exchanger can eventually crack and when it does, there can be a combustion of gases mixing with the air that you breathe in your home.

The good thing is, there are many furnaces with high limit switches which can prevent too much heating of the heat exchanger. These limit switches have the capability of monitoring the temperature so that when the temperature reaches the predetermined set point, the unit will automatically shut off. In some furnaces you have to manually reset the limit switches, and this can be more beneficial because the furnace will not resume operation until the problem has been technically resolved. In other furnaces, though, the limit switches reset themselves automatically when it senses that the temperature has gone to normal levels.

Nonetheless, it is essential that you clean your filter often or replace it when deemed necessary. Also, always read and follow the guidelines set forth by your furnace manufacturer. Doing both can help prevent accidents and injuries, and can save your life, too.


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