Is Your AC Filter Stealing Money and Comfort From You?

When is the last time you changed your ac or furnace filter? Chances are, unless you are pretty diligent, you likely forget to change your ac or furnace filter as often as you should.

We recommend changing your AC or furnace filter at least every 90 days, or if you or anyone in your family has health issues, allergies to dust mites and pollen or other irritants. To make it really easy to remember when to change your filters, you can use Nordic’s free reminder service so you never forget, ask one of our customer service associates when you order next!

AC and furnace filters work by trapping particulates that are suspended in your indoor air in the filter material, a sheet of polyester fabric that is woven for strength and performance.

As air flows through the system, particulates are trapped in the fabric of the filter. As particulates build up over time, they residually “plug” the filter. The resulting reduction in air flow forces the HVAC system to work harder to push the same amount of air through the system. This results in increased operating costs. Further, as the filter gets “plugged” with contaminants, the ability to purify the air that is flowing through the system is diminished.

An even better way of keeping up with the filter in your HVAC System is to install an Air Gauge that tells you the condition of your filter.

gageOur preferred system is the General Air Gauge. The G-99 Air Filter Gage provides a visual indication of the need to replace the air filters in forced air heating and cooling systems thereby eliminating any guesswork about the condition of your ac or furnace filter.  The gage is installed between the blower and the filter where a slight vacuum exists due to the air flow resistance of the air filter.  Air flowing into the gage, around the calibration screw, lifts a vane in proportion to the negative pressure in the blower compartment.  As the air filter loads, the vacuum increases, raising the vane to indicate a filter change is necessary.

The gage may be calibrated in a negative pressure range from 0.1 to 0.4 inch w.c.  When properly calibrated in this range a vacuum increase of 0.10 to 0.15 inch w.c. will indicate a filter change is necessary.

If you are looking for the perfect solution to maintaining optimum efficiency of your heating and/or cooling system, please consider the GeneralAire Air Gauge.

What are MERV, MPR, FPR Ratings?

What are MERV, MPR, FPR Ratings?

Nordic Pure MERV 12 AC Furnace Filtersmerv_14_optionmerv_15_option   MERV Rating is the Minimum Efficiency Reporting Value for air conditioner furnace filter media as determined by the American Society of Heating, Refrigerating, and Air Conditioning Engineers, ASHRAE. MERV is the primary international air conditioner furnace filter industry standard and is used for rating the ability of a furnace filter to capture and hold particles and pollutants. The measurement used in these ratings is a Micrometer, or micron.

  • A micron is one millionth of a meter (0.000001m) and is not visible to the human eye.
  • A piece of copy paper is about 100 microns.
  • A human hair averages 80 microns in size.
  • Pet dander is 2-4 microns and can linger in the air for hours before it settles on a surface! uses the MERV Rating system. AC Furnace Air Filters are manufactured direct since 1960. We have all standard AC Furnace Air Filters and all custom sized AC Furnace Air Filters. In the average American home, the most common air filter is only a MERV 4. These are usually the furnace filters that you can see through and do not stop particles smaller than 10 microns. Most residential systems are well able to use the MERV 12.

  • MERV Rating is the established air filter industry rating system, but, some companies have developed their own rating systems, based on the ASHRAE MERV Rating.
  • MPR Rating, or Microparticle Performance Rating, was developed by a large manufacturer to grade their air filters based on the ability to filter air particles smaller than 1 micron. The microparticle performance rating is not considered to be the industry standard by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). The published MPR Rating numbering system is a scale of 0 – 2700, with their highest published furnace filter equaling the Nordic Pure MERV 13.
  • FPR Rating, or air Filter Performance Rating, is a grading system that uses a color/number system on a scale of 4 (green circle) to 10 (blue circle). Some of their air conditioner filter descriptions refer to the MERV Rating and the MPR Rating, but don’t always agree.

It’s important to note that the MERV Rating is the “MINIMUM” initial efficiency rating. It’s the efficiency rating given to the air conditioner furnace filter when it is brand new and is expressed as a percentage of the total airborne particles of a certain size. As the new air conditioner furnace filter traps more debris, it becomes more efficient – trapping the smallest particles as time goes by. Eventually, every air filter will trap the tiniest particles less than 1 micron, until it becomes so dirty that air cannot get through. Air Filter Gages measure the building pressure behind the aging furnace filter and can let you know it’s time for a AC Furnace Air Filter. Our customers also benefit from our Free Reminder Service that will automatically notify you by email or phone that it’s time to check, change or replace your air conditioner furnace filters.

Nordic Pure manufacture direct since 1960. Multiple air filter media available: MERV 7, MERV 7 Plus Carbon, MERV 8, MERV 8 Plus Carbon, MERV 10, MERV 10 Plus Carbon, MERV 11, MERV 11 Plus Carbon, MERV 12, MERV 12 Plus Carbon, MERV 13, MERV 13 Plus Carbon, MERV 14, MERV 14 Plus Carbon, MERV 15, MERV 15 Plus Carbon and MERV 16.

Nordic Pure AC Furnace Air Filters are available in ½ inch air filters, 1 inch air filters, 2 inch air filters, 4 inch air filters, 5 inch air filters, and 6 inch air filters. Custom size air filters are also available. Please call us at 1-800-590-0339.

MERV Rating MPR Rating FPR Rating ASHRAE MINIMUM INITIAL EFFICIENCY Containment and Particles Uses
.30 to 1.0 Microns 1.0 to 3.0 Microns 3.0 – 10.0 Microns
MERV 19-20 (HEPA) N/A N/A 99.99-99.999% < 0.30 Micron
carbon dust
sea salt
all combustion smoke
Clean Room Manufacturing
Electronics Manufacturing
Carcinogenic Materials
Hospital Inpatient Care
Superior Commercial Buildings
MERV 17-18 (HEPA) N/A N/A > 95%
MERV 16 (HEPA) N/A N/A > 95% > 95% > 95%
MERV 14-15 N/A N/A 75 – 95% > 90% > 90% .30 to 1.0 Microns
All Bacteria
Tobacco Smoke
Fireplace Smoke
Droplet w/Virus (sneeze)
MERV 13 Black 2200 10 Blue Rating < 75% > 90% > 90% Superior Residential Property
Superior Commercial Property
MERV 12 80 – 90% > 90%
Purple 1500  8-9 Purple Rating 1.0 to 3.0 Microns
Auto Emissions
Baking Flour
Pet Dander
MERV 11 Red 1000 7 Red Rating 65 – 79% > 85%
MERV 10 50 – 64% > 85% Residential
Industrial Workspaces
MERV 8 Light Blue 600 5 Green Rating 70 – 85% 3.0 to 10.00
Mold Spores
Household Dust/Spray
Hair Spray
Dust Mite
Sanding Dust
Textile / Carpet Fibers
MERV 7 50 – 69% Minimum filtration workspace
Window units
Fiberglass filters
polyester air filters
MERV 6 400 35 – 49%
MERV 0 – MERV 5 20 – 34% Manufactures most of the above MERV Ratings.

Nordic Pure Furnace Air Filters at Amazon Canada
Canada Customers shop for Nordic Pure furnace filters here!


Fiberglass vs Pleated Air Filters

Fiberglass vs Pleated Air Filters

filterforwebsiteDo not fall into the trap of thinking that all furnace filters are the same. Do not run out and buy the cheapest filter that you can find, just to save a few cents. In the long run, purchasing a cheap fiberglass filter can cost you thousands of dollars over the long run. With Nordic Pure’s pleated furnace filters, you may be making a larger initial investment, however you will be able to save thousands of dollars in the long run. To understand how a high quality furnace filters can save you money, it is important to understand the effects of poor filtration.

The Drawbacks of Fiberglass Furnace Filters

  • Poor Air Quality

The EPA has indoor air pollution listed as a Top 5 threat to our environmental health. This is because aside from everyday dirt and dust, your home is also full of particulates like: bacteria, mold, pollen, allergens, dander, dust mites, and even fiberglass from your filter. This risk becomes even more prominent once you think about how much time you spend inside. Most people spend an average of 90% of every day inside. This has become a much more prominent issue because the air inside your house is normally 2 to 5 times more polluted than the air outside.

  • Monthly Maintenance Expenses Fiberglass furnace filters must be replaced often. It varies by households from every two weeks to every six to eight weeks. Even though they are a cheap initial investment, it becomes much more expensive than more durable pleated furnace filters over time.
  • Increasing Energy Costs Furnaces are designed to run with an optimal level of air flow. When a furnace is pushed beyond this range in either direction, it takes much more energy to produce the same results. Fiberglass furnace filters have a tendency to clog extremely fast when compared to a Nordic Pure pleated furnace filter. Fiberglass furnace filters have been reported to increase your monthly heating and cooling costs by as much as 30% when compare to pleated furnace filters.


  • Furnace Repair Expenses

Any time you need to repair or replace your furnace, it can become expensive very quickly. Additionally, while it is out of service, your house will likely become very uncomfortable. Fiberglass furnace filters are designed only to filter out the largest of debris. This allows small pieces of dirt and dust to pass directly into your furnace. Once dirt finds its way into your HVAC system, they will disrupt moving parts and even clog the hose connections. This means that you furnace must work much harder to achieve your desired results. The harder it is forced to work, the sooner it breaks down and needs to be repaired or replaced. This is especially true when your furnace is working hard over a long period of time, such as the cold winter months.

How to Save Money With Nordic Pure Furnace Filters

  • Better Air Quality Can Reduce Medical Expenses

Fiberglass furnace filters cannot filter out many particulates like many forms of mold and bacteria. This mold and bacteria will often attach itself to some of the warmer and damper parts inside of the furnace. This gives them the perfect place to grow. Since they are already past your filter, they can break off and pass through home at any time. This can increase your medical expenses, not only by directly making you and family ill, but it also is the perfect way to agitate someone with asthma.

Another advantage of using a Nordic Pure pleated furnace filters is they are sturdy filters. Fiberglass filters are incredibly fragile because of poor construction and the strength the fiberglass itself. The fiberglass will often break apart as it is bombarded by air. Tiny pieces of fiberglass then flow through the furnace and are dispersed across the house. This can not only aggravate asthma, but can create long term health problems.


  • Decreasing Overall Expenses

Nordic Pure furnace filters can decrease expenses in a number of ways including decreased maintenance/repair/replacement costs for both the furnace and the filter itself. Since a pleated furnace filter can filter out much smaller particulates, this diminishes the ability of dirt and dust to enter your HVAC system. This increases the lifespan of your furnace because it allows it to operate within its optimal range. This means less maintenance is needed, less repair expenses, and a much longer lifespan for the furnace itself.

It also decreases your monthly expenses on furnace filters themselves. Nordic Pure pleated furnace filters last much longer than their fiberglass counterparts which means you must replace them much less often.

Choosing Nordic Pure over traditional fiberglass furnace filters is smart choice. It will save you money in a number of ways as well as ensuring that the air you and your family breathe is as clean as possible.