Wednesday, November 12, 2014

Air Filter FAQs

  • How do I locate my filter?
In many cases if you have never located your heating systems filter it can be a challenge to find it. All systems are different so we will do our very best to point you in the right direction. Typically your filter is going to be somewhere near the blower (fan), this is because one of the main purposes of a filter is to protect the blower from damage. This applies to all different types of furnaces, including gas furnaces, oil furnaces, electric furnaces, as well as air conditioners.

  1. Make sure the fan is not running, you can do this by setting your thermostat to the off position and turning off power to the unit.
  2. Locate the service panel (main cover), usually on the furnace's front or side. The front of most systems will have a label that gives details on removing the cover/panel. In most cases you will not need tools to remove will just have to pull up on the handle and it will pop out.
  3. Now that you have removed the panel locate the filter. You should be able to see the frame of the filter sitting horizontally or vertically near the blower (fan). If you find the filter slide it out and take note of the size.
If you couldn't locate your filter by following the steps listed above work you way backwards from the return duct, this is the one that brings air into the system. If you can't locate the filter we suggest you consult a local reputable HVAC company to do an inspection of your system and inform you of the size of filter you need and where it goes.
  • How often should I change my filter?
Manufacturers and recommend changing basic/fiberglass filters every 30 days and pleated filters every 90 days. This keeps your system running efficiently and the air in your home or business clean. If you don't change your filters at recommended intervals you can cause damage to your system that can be very pricey to have repaired.

If you are shopping on, specific filter listings will usually list the "Filter Longevity (Months)" under the additional information tab.

  • What direction should my filter go?

Most filters have arrows on the frame of the filter that indicate which direction the filter should go. The arrow points in the direction the air is flowing through the duct system. Many filters are bi-directional (it does not matter which way the air travels). If your filter has a plastic or metal mesh grate or lining on one side, then you would place the filter so that this mesh side is closest to the furnace. That is, the air travels through the non-reinforced side first. The reinforced side helps the media in the filter hold its shape.
  • What if I can't find my filter size anywhere? 
First lets talk about filter sizes. A filter’s nominal size is the size printed on the filter’s packaging. A filter’s actual size is the exact measurement from outside edge to outside edge of the filter. In many cases the nominal size of a filter will not be the actual size of the filter (they are usually undercut a little to allow wiggle room). For example, A filter of nominal size 16x25x1 may have an actual size of 15-1/2x24-1/2x3/4.

If you are having trouble finding your filter size, the first thing we would recommend is to measure the exact size of your old filter. Once you know the size that fits in your system, you can check if there is a standard nominal size that is close to your exact size. It may be helpful to take a tape measure with you when shopping for filters, so if packages do not list the filters actual size you can measure it yourself. What if you can’t find any standard size filters that match your old filter? You can order custom size filters. Just make sure you know the exact size filter you need as these filters will be made to your exact specifications (+/- 1/8”).

Feeling lost and confused? Just contact and we can help you find what you need! Click the support tab on our website to message a customer advocate or call 866-469-8556 Monday-Friday 8am-4pm Pacific Standard Time. has a large selection of custom filters available. Once you have chosen the type of filter you would like you will be directed to that products page where you will be able to enter the exact size you would like us to make your filters. Next all you need to do is “add to cart” and continue with checkout.

 Custom filters from are made with high standards and top craftsmanship. We will have the filters made to the exact size you specify ensuring your custom furnace filters fit perfectly into your system keeping you and your family breathing cleaner, healthier indoor air. Custom filters are typically received in about 10 business days and are not returnable.
  • What is the difference between fiberglass and pleated filters?

Fiberglass filters were originally developed to protect your furnace and/or air conditioning system. They were not intended to significantly improve your indoor air quality. Pleated filters do both. They improve your indoor air quality by attracting and capturing allergy-aggravating micro particles, and help keep your furnace equipment clean.

  • What is the difference between washable/reusable filters and pleated filters?

Washable or reusable filters are similar to fiberglass filters in their efficiency; they will protect your system but do not clean your air as a pleated filter would. The benefit of a washable filter is of course that it can be cleaned and re-used; therefore they last longer than a fiberglass or pleated filter.

  • What is the difference between high capacity and standard capacity filters?
 The difference between High Capacity Filters and Standard Capacity Filters is mainly the number of pleats on a pleated filter. A High Capacity filter will have more pleats when compared to a Standard Capacity Filter of the same size and model. With more pleats in a filter you are going to have more surface area to capture particles and allow air to pass through. A High Capacity Furnace Filter is a great choice but most HVAC systems don't require a High Capacity Filter and will do just fine with a Standard Capacity Filter. We always recommend using an equivalent filter to the one you are currently using as all systems are different and may require specific filtration.

  • Do filters remove odors from the air?

All filters are design to remove particles from the air, but not all filters will capture the particles that cause odors. Special carbon filters are made to remove odors from your air. Activated carbon is very porous and works perfectly to absorb gas particles, which carry odors in the air.

Check out carbon filters on
  • If I use a high quality filter will it eliminate the need for dusting?

We wish! Pleated filters will reduce the need for dusting but it won't eliminate it. Atmospheric dust consists of a wide variety of particulates ranging in size from 0.001 micron to a relatively large 100 microns. Because of the weight of the large particles, they will settle out on your furniture long before they reach your filter.
  • Do high quality filters restrict airflow?

The more efficient a filter is, the more effort it takes air to pass through it. However, high quality filters will not usually damage your system; more often then not damage occurs when filters are not changed as often as they need. Since pleated filters are doing a much better job at cleaning your indoor air, compared to a basic fiberglass filter, they can become dirty which leads to airflow restriction and strain on your system.  So remember to change that filter! We recommend checking with your systems maintenance performer or manufacturer if you are thinking about switching to a higher efficiency filter or are concerned about airflow. 

  • What does MERV mean?

MERV stand for the Minimum Efficiency Reporting Value. It is a filter rating system devised by ASHRAE, the American Society of Heating, Refrigeration and Air Conditioning Engineers, to standardize and simplify air filter efficiency ratings for the public. The higher the MERV rating, the higher the effectiveness of the air filter. Simply stated, a MERV 13 filter will remove smaller particles from the air than a MERV 8 filter.

MERV ratings allow you to effectively compare one type or brand of filter to another. For example, the EPA guidance for indoor air quality in schools recommends filters between MERV 8 and MERV 13. By comparison, the typical fiberglass throwaway filter used in most homes has a rating of MERV 4 or less. If allergies or asthma are your concern, we suggest you choose a MERV 8 filter at minimum.

  • How does MERV compare to FPR and MPR ratings?

Some brands and retailers have started using their own filter rating systems. You may have noticed 3M brand filters that use the Microparticle  Performance Rating (MPR) system or Home depot brand filters that use the Filter Performance Rating (FPR) system. MPR and FPR are not directly comparable to MERV. The basic rule for all rating systems is the higher the number the more efficient the filter is at removing particles from the air.

For those of you comparing different brands, the following table shows general comparisons among these rating systems.

MERV rating
Comparable MPR rating
Comparable FPR rating



1000, 1200, 1500
1900, 2200

  • Why is my furnace so noisy?

Are you using the correct size filter? The better your filter fits in your system the less noise it should make. Noise from shifting filters can carry through your ducting and sound like loud banging noises. If air is traveling around the sides of your filter it can sometimes cause a whistling noise. Air will always travel the path of the least resistance, so if there are gaps that’s where the air will go first.

Regularly changing your air filter will also help keep the noise level down. A dirty filter cannot breath well and may become noisy. You may also try using a lower rated filter to decrease airflow resistance. But, keep in mind that the lower the filter rating, the less efficient the filter is at cleaning your air.

Friday, November 7, 2014

Out of sight, out of mind. Let us RememberTheFilter for you!

Clean Air Club makes filter maintenance a breeze!

and your 1st filter is on us!

 Sign up for our Clean Air Club and a brand new pleated MERV 8 rated filter will be delivered to your door every 1, 2, or 3 months. Changing your filter every 3 months is the manufacturer recommendation but its up to you! Also your first filter is free, just pay shipping!

 No more worrying about how old your filter is or rushing out at the last minute to try and find a replacement. No more trying to figure out what brand or size you bought last time. As a member of the Clean Air Club we will remember for you! All you have to do is change the filter once it arrives at your door!

This filter doesn't have a bunch of fancy packaging it just does what it should...protect your system and clean your air. This filter is rated MERV 8 and captures dust, debris, lint, pollen, mold spores, pet dander, dust mite debris, bacteria, and particles that carry viruses. This filter has a very low pressure drop, meaning it captures a lot of stuff without restricting the air flow in your system.

Clean Air Club offers filters of the following sizes;

Nominal size (Exact Size)
10x10x1  (9-1/2 x 9-1/2 x 1)
10x20x1  (9-1/2 x 19-1/2 x 3/4)
12x12x1  (11-3/8 x 11-3/8 x 3/4)
12x20x1  (11-1/2 x 19-1/2 x 3/4)
12x24x1  (11-1/2 x 23-1/2 x 3/4)
12x25x1  (11-3/4 x 24-3/4 x 3/4)
14x14x1  (13-3/4 x 13-3/4 x 3/4)
14x20x1  (13-1/2 x 19-1/2 x 3/4)
14x24x1  (13-3/4 x 23-3/4 x 3/4)
14x25x1  (13-1/2 x 24-1/2 x 3/4)
15x20x1  (14-1/2 x 19-1/2 x 3/4)
16x16x1  (15-3/4 x 15-3/4 x 3/4)
16x20x1  (15-1/2 x 19-1/2 x 3/4)
16x24x1  (15-1/2 x 23-1/2 x 3/4)
16x25x1  (15-1/2 x 24-1/2 x 3/4)
18x18x1  (17-3/4 x 17-3/4 x 3/4)
18x20x1  (17-1/2 x 19-1/2 x 3/4)
18x24x1  (17-1/2 x 23-1/2 x 3/4)
18x25x1  (17-1/2 x 24-1/2 x 3/4)
20x20x1  (19-1/2 x 19-1/2 x 3/4)
20x24x1  (19-1/2 x 23-1/2 x 3/4)
20x25x1  (19-1/2 x 24-1/2 x 3/4)
20x30x1  (19-3/4 x 29-3/4 x 3/4)

Your filter is the first defense for one of the most critical systems in your home. Remember a clean filter protects your system, cleans your air and reduces energy usage.
Don’t let filter maintenance bring you down!
Sign up for the Clean Air Club today and get your first filter free!

What is an electrostatic filter?

Many filters say they are electrostatic...

Have you ever wondered exactly what that means?

Electrostatic filters use media that has been formulated to generate a strong static charge as air passes through. Air runs through the filter, the fibers create an electrostatic charge and particles in the air cling to the filter media. Pretty cool huh? offers disposable pleated filters with electrostatic properties such as the Flanders Naturalaire Plus MERV 10 Filter
as well as washable/reusable electrostatic filters such as the Flanders NaturalAire Electrostatic Washable Air Filter
Washable electrostatic filters are made from durable materials and can be used for several years. Washable electrostatic filters should be checked every month. The easiest way to clean a washable electrostatic filter is to vacuum the dust and debris right off the surface. If the filter is really dirty, it can be flushed clean with a hose.

Flanders NaturalAire Electrostatic Washable Air Filter can even be made in custom sizes!

Thursday, November 6, 2014

Benefits of a Clean Air Filter

The first purpose of air filters is to protect your system from harmful dust and debris. A clean filter keeps your system protected and helps to extend the life of your system. A dirty filter can cause overheating and system breakdowns, which lead to expensive repairs!

Furthermore, a clean filter keeps air moving through your system with ease. A dirty filter makes your system work much harder to move air through the system, which leads to higher energy bills! Clean air filters keep your energy usage down which is good for the environment and your wallet!

The added benefit of high quality air filters is cleaner air! Basic filters remove dust and debris; pleated filters go a step further to remove dust as well as pollen, mold spores, pet dander, smoke, smog, bacteria, and particles that carry viruses! A clean filter will not only protect your system but protect your family as well! Prevent airborne illnesses and help those with allergies and asthma by keeping your filter clean! Clean air can even help prevent respiratory problems from developing! A dirty filter, on the other hand, will put dust and debris back into the air you breath.

The most important thing to remember about these benefits is that they only work with regular filter changes. So be sure to change your furnace filter in the recommended time frame. A basic fiberglass furnace filter should be changed about every 30 days, while a pleated furnace filter lasts longer and should be changed about every 90 days.

If you are shopping on, specific filter listings will usually list the "Filter Longevity (Months)" under the additional information tab.

Clean filter, time to change filter, beyond time to change filter!

Sunday, April 21, 2013

Dust mites invisible to the eye but still there

Everyone thinks of dust mites as just little specs of dust that can be vacuumed or swept away. But that is not all they are...they are creepy looking bugs that if you could see you would probably not being sitting her reading this, you'd be looking around at them, thinking ewww.

Dust mites are in the arachnid family which is what spiders and ticks are. They thrive in warm, humid environments and feed on skin flakes that we all shed on a daily basis. They are invisible to the human eye, measuring in at 1/100 to 1/64 of an inch. The good news is they have a life span of 30 to 100 days. The bad news is that they lay eggs and dispose about 10-20 waste particles per day.
  • Nearly 100,000 dust mites can live in a single square yard of carpet.
  • Studies estimate dust mite waste comprises between 10% and 25% of a pillow's weight after a year or two of use
  • Dust mite allergies are triggered by proteins found in the mites cast-off body parts, secretions and feces
  • Depending on their species, mites live for approximately 30 or 100 days, laying eggs and secreting about 10 to 20 waste particles per day
  • The dust mite is nearly impossible to see without magnification. A typical mattress can contain tens of thousands of dust mites
The enlarged picture may show a very frightening creature, but they only pose a minor threat to us. They do not bite or live on us, but for people who are allergic to dust mites the proteins they dispose can cause major suffering. Also the exposure to dust mites can trigger asthma in children who have not shown asthma symptoms before.

The good furnace filter to help rid your home from dust mites is the Naturalaire Merv 8 Filter. Since dust mites are so small the multiple pleats in the furnace filter will do their best to capture the mites as they flow through the air. This will help to ensure that your family is breathing cleaner air and capturing most of those critters.

Thursday, November 15, 2012

Odor Reducing Furnace Filters from 3M Filtrete

If you have pets you know that no matter how often you bathe them or how often you vacuum they always have a special smell and the added bonus of pet dander floating around in your indoor air. 3M Filtrete has a great odor reducing filter that is aimed specifically for the pet lovers home or those with with smells they want to eliminate.

The 3M Filtrete Home Odor Reduction Filter removes lint, dust & dust mites, pollen, mold spores, smoke and pet dander. That sounds pretty good, right? It also removes microscopic particles that can carry bacteria, viruses and odors. Still haven't convinced you that this furnace filter is for you? This filter is the most effective activated carbon filter at removing odors in the home and lasts up to 3 months. It has the trusted and well known name behind it, 3M has been making trusted products since 1902 and lead the way with the Filtrete line of indoor air filtration.

For all the pet lovers out there, that love to share their home with their four legged best friend, this is the best filter to keep the smells you dont want out!

Friday, October 12, 2012

Fall Furnace Failure?

It's that beautiful time of year when the leaves are changing color, the days are getting shorter and there is a crisp chill in the air. I don't know about you but this is my favorite time of year. There is something so comforting about sitting all curled up with a great book and a cup of hot cocoa and enjoying a nice warm house. But this could be a problem is you haven't changed your filter recently. Your furnace might be working extra hard to re-circulate your air through that dirty filter from months or even years ago. If you haven't used your furnace all summer you will still want to make sure that isn't all loaded with all the nasty stuff they can capture restricting airflow. The last thing you need and/or want to happen is to have your furnace fail you. This is the largest piece of equipment in your house and you have to take great care of it. Don't fail your furnace and it won't fail you start by checking the's first line of defense.

Before those chilly autumn nights are a regular and your heat is on 24/7 you will want to check to make sure your filter is clean and ready to go. Keep your family warm and your furnace happy this fall.