Confused with all the choices of 20x25x5 filters? You're not alone. Even though these filters carry the same nominal size, they range from only 4.25" thick to over 5.25" thick. The difference in these sizes is just enough to make them unique and not interchangeable.
Exact sizing is crucial for air filter performance. Using a filter with more than 0.25 inches variance can reduce filtration efficiency by 20% and increase energy costs by 15%.
A 20x25x5 filter can go 6-9 month easy. A monthly filter change would cost homeowners over $500/yr. One a month if it's 1 inch, which his is not, it's 5 Inch. Which can be good for 6-12 months depending on the conditions and the MERV.
20x25x5 Air Filter MERV 8 Comparable to MPR 700 & FPR 5 Compatible with Honeywell FC100A1037 Premium USA Made 20x25x5 Furnace Filter 1 Single Filter by AIRX FILTERS WICKED CLEAN AIR. $34.99 Was $41.20.
Usually they round up or down to the nearest inch, so it is less likely that these two filters will fit the same furnace because of the rounding. However, if your filter is close to 20x25x4. 5, and the actual dimensions of the 20x25x5 filter are closer to 20x25x4. 5, than they might fit.
Confused with all the choices of 20x25x5 filters? You're not alone. Even though these filters carry the same nominal size, they range from only 4.25" thick to over 5.25" thick. The difference in these sizes is just enough to make them unique and not interchangeable.
Thicker air filters can offer important advantages such as longer lifespan and greater dust-holding capacity, but only when your HVAC system is designed to handle them. Simply swapping a 1-inch filter for a 5-inch one doesn't guarantee better air quality or system performance.
Myth #3: More expensive air filters aren't worth the money
In a word, yes. Pleated filters, electrostatic filters, and HVAC air filters with a higher MERV rating are all more expensive than the basic 1” fiberglass filter. They also all do a better job of filtering out allergens, pollutants, and contaminants.
Large amounts of particles are removed from liquid by filters having a 5 micron rating. While there are filters with smaller micron ratings, those below 5 micron are more prone to severe clogging or rapid buildup of debris.
Top 5 Budget Air Purifiers
Cleaning the air filter not only does not improve, but also deteriorates its filtration properties. Only periodical replacement of the filter with a new one can provide efficient filtration of the air entering directly into the combustion chamber of the engine.
Assuming this isn't a year-long hiatus, you'll be fine. Install a new filter when you get back. It's better to run with no filter short term than a plugged filter. The restriction of airflow can cause you a lot of problems.
A dirty filter will slow down airflow, making your heating or cooling system work harder to maintain a comfortable temperature. This wastes energy and increases your utility costs.
The most common air filter size in American homes is 20x20x1 inches, closely followed by 16x25x1, 16x20x1, and 20x25x1. The "1" represents the standard 1-inch thickness that fits most basic residential HVAC systems.
If left unchecked, a dirty filter can cause major damage to the furnace, particularly the blower motor or the heat exchanger. These are expensive repairs, and in some cases, you may even need to replace the entire furnace.
Air filters come in various sizes. It is important that a filter is properly sized to fit an HVAC duct. If a filter is too small or too large, it will not seal properly to the opening, meaning particles can travel through the system into the home or building's indoor air.
A micron is one millionth of a meter. To give you some idea a human hair is about 50 microns diameter, on average. So a 25 micron filter would let anything SMALLER than 25 microns PASS through the filter. A 5 micron traps, obviously much smaller particles.
20 micron is a “coarser” filter. It targets visible grit like sand, silt, and rust flakes. 5 micron is a “finer” filter. It targets smaller silt and haze, and is often used to protect downstream equipment.
Particle Size
Knowing the size of the particles that you want to filter helps in choosing the micron rating. If you were dealing with fine particles for example in water purification, the micron rating would have to be smaller. With larger sized particles, it would require higher micron ratings.
The average cost for an Air Filter Replacement is between $75 and $96. Labor costs are estimated between $37 and $55 while parts are priced between $38 and $42. This range does not include taxes and fees, and does not factor in your unique location.
Replacing a clogged air filter can increase fuel efficiency and improve acceleration, depending on your car make and model.
The main drawback of using a high MERV filter is reduced airflow. While it captures more particles, it can strain your HVAC system, leading to lower efficiency and potentially higher energy costs if the system isn't designed to handle the restriction.
HEPA filters last longer than many other types of air filters. Typically, it's best to change your air filters every 90 days. However, the HEPA filter lifespan can reach 6 to 12 months. If longevity is your goal, HEPA filters are often a great choice when compared to other options.
Are more expensive air filters better? Yes, they often are. Higher-quality filters last longer, require fewer replacements, and perform consistently over time.
HEPA filters
Usually packaged as a HEPA “system,” these filters are the best of the best. VOCs, bacteria, viruses… HEPA filters capture nearly everything.