7August 2021
Furnace filters catch hazardous pollutants and particles in the air and prevent them from flowing in different areas of a building, resulting in a clean and habitable environment in the home or apartment. Furnaces cannot operate properly without a filter, resulting in poor air quality in both residential and commercial facilities. We put 20-x-25-x-4 furnace filters to the test in order to find the finest solutions for consumers to buy for their home or workplace. Because it has a large capacity and is similar to 3M Filtrate Mpr 1000 to 1200 Micro Allergen Defense and Honeywell Allergen Plus FPR 7, we recommend the Aerostar 20x25x4 MERV 11 Pleated Air Filter. It’s effective at trapping dust mites, lint, smoke, pet dander, dust, and mold spores that circulate in the air, allowing people to breathe easier and enhance their health. The Filtrete 20x25x4, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat is our honorable mention because its non-electrostatic 3-month pleated 1-inch household air filters outperform fiberglass and are washable. The product is intended for use in household settings and has the ability to capture small particles.
FilterBuy 20x25x4 Air Filter MERV 8, Pleated HVAC AC Furnace Filters (2-Pack, Silver)Price: $36.10 Rating: 4.5
Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters 2 PackPrice: $38.70 Rating: 4.5
Aerostar 20x20x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 19 3/4″x 19 3/4″ x 3/4″)Price: $47.99 Rating: 4.7
The Aerostar filter, which is comparable to the 3M Filtrate MPR 1000 to 1200 Micro Allergen Defense and the Honeywell Allergen Plus FPR 7, is meant to have a high capacity. When compared to similar items in the business, it is more advanced and useful in combating lint, pet dander, smoke, dust mites, mold spores, and dust. With the use of high-grade materials, quality filtration is supplied with the product. Each item is made in state-of-the-art facilities around the United States to serve a variety of clientele. In each season, the filters can be used for both air conditioners and furnaces. 90% of big airborne allergens are caught once the product is installed, reducing motor strain and allowing the appliance to perform more effectively, potentially extending the parts’ lifespan. The filters can help lower the building’s energy use, resulting in monthly savings. With the usage of filters, less maintenance is required on the furnace because the parts work more efficiently and have fewer difficulties. It can help with respiratory difficulties, asthma, and allergies by eliminating the major allergens. Fiberglass and a polytheistic blend are used in the product. They have more pleats and are heavier, therefore they have a higher level of construction and overall quality. When compared to similar filters, they appear to be more robust and durable.
The filters may be too tiny for some units and will need to be taped in place in order to stay secure in the furnace. On the box, the MERV rating is not clearly stated. Some of the filters may be damaged when they arrive. They’re also not the same size as the OEM filters that some buildings may be replacing. Due to their small size, return grills may begin to whistle once the filters are placed. Around the margins, air can also creep in. They’re also not individually packaged, which exposes the filters to dirt and dust while they’re being stored.
Special Mention
HEALTHY LIVING ULTRA ALLERGEN DEEP PLEAT THE FILTRETE 20X25X4, AC FURNACE AIR FILTER, MPR 1550 DP
Filtrete’s Healthy Living Ultra Allergen Deep Pleat AC Furnace Air Filter outperforms fiberglass. Its Filtrete Brand 3-in-1 technology enhances airflow and captures pollutants.
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The Filtrete air filters allow clean air to flow through while collecting undesired air particles that circulate to improve the building’s air quality. The filters are made to collect and catch small particles such as coughing germs, smoke, bacteria, viruses, fireplace smoke, candle smoke, and sneeze debris. Large particles, as well as ultrafine particles, are trapped. Air filters in sizes of 4-inch, 4-inch slim fit, and 5-inch are also available. Air filters should be replaced every 90 days for one-inch filters and every 12 months for four- and five-inch filters, according to the manufacturer. They’re more user-friendly than accordion-style filters, which require the use of plastic combs to install.
The product’s adaptability is limited because it can only be utilized in residential buildings. The dimensions are also less precise and may not apply to all sorts of filters. Slim fits are also smaller in every dimension, making a proper seal difficult to achieve. They may also be too large for earlier furnace models. The cardboard reinforcement is of poor quality and easily rips. A MERV rating is likewise not clearly stated on the box.
Choose the color green.
NORDIC PURE 20X25X4 (ACTUAL DEPTH: 3-5/8) PLEATED AC FURNACE AIR FILTERS MERV 12
The Nordic Pure 20x25x4 (3-5/8 Actual Depth) is a 20x25x4 (3-5/8 Actual Depth) Pleated AC MERV 12 Mold, dander, dust, and pollen are effectively trapped by furnace air filters. The pleated design extends the product’s lifespan.
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The Nordic Pure air filters have a nominal dimension of 20-Inch by 25-Inch by 4-Inch and an actual size of 19-1/2-Inch x 24-1/2-Inch by 3-3/4-Inch, which is a significant benefit. It is meant to catch pollen, pet dander, mold, and dust in the building and prevent it from recirculating or contaminating the air. It has a MERV 12 rating, making it one of the most efficient filters on the market. The filter’s recyclable frame makes it an environmentally beneficial solution for individuals trying to lower their carbon impact. To make it easier on the environment, the product is made using recycled beverage paper. It has been shown to outperform non-electrostatic fiberglass filters, poly disposable filters, and washable filters in terms of making it easier to breathe and avoiding exposure to common allergens. Pleats with a wide surface area are also included to ensure that more particles are captured without being recirculated back into the house. When compared to similar products, the pleats added to the filter help it to live longer, which means it only needs to be replaced every three to six months.
The filter is ineffective at removing smoke, candle soot, pollution, smog, bacteria, and viruses, which can lead to illnesses spreading throughout the structure. It’s also not able to get rid of odors.