![]() Filter Type: Not All Filters Are Created Equal ![]() It will ensure you get the best home air filter that will also last through the season. You need to know a few things before buying air filters for your home’s ac. Thicker filters are better equipped to prevent dust, pollen, and other allergens from getting into the air you breathe at home. You don’t want gaps around the edges or a filter that’s bent to fit inside. The best HVAC air filters for the home fit your system perfectly. Low airflow means your AC is running longer and more often, causing a spike in your utility bills. Clogged filters reduce airflow, making your HVAC system work harder. Best Air Filtration For Your Homeĭirty AC filters not only reduce air quality but also affects your energy bills. Before you grab the first inexpensive air filter at the store, here’s what you need to know. Whether you’re getting ready for summer air conditioning or heat in the winter, your filter affects the air quality in your home. Chances are, you have a filter replacement for your AC at least thrice a year, at least homeowners should. ![]() You know it’s important to change the air filter for your home. For now, it is better to go through all the test results in the second and third chapters.Find The Best Air Filter For Your Home AC But we’ll come back to that in the final chapter. But these filter tests also made a good basis for a practical crash course. If you are interested in fan tests and don’t know how to read spectrograms yet, we recommend you to complete the overview, it will come in handy. ![]() For more on this topic, see Get familiar with measuring the frequency response of sound. We also use the same fixture for in-depth sound analysis, where we measure noise levels in the 20-20,000 Hz range at 240 frequencies. They are so because we increase the sensitivity of the sensing to a high enough resolution even for very low speeds by a parabolic collar around the noise meter. We didn’t test at maximum power because few will be blasting through dust filters at around 2100 rpm, where the Noctua is as well, naturally, noisy.ĭon’t be alarmed by higher noise levels in the results. This is so that the filter (and later grille) tests can show the increase in noise that is caused by the greater mechanical resistance if an obstacle is placed in front of or behind the rotor. We don’t equate the latter to the same level in these filter tests, but we have fixed levels of operating voltages of the test fan. We measure both airflow and pressure in the wind tunnel as described in the fan test methodology, but we measure noise a little differently. For the filter tests we use a Noctua NF-A12x25 PWM fan with a sealing frame installed Although we will be using not only filters but also other obstacles in our standard fan tests, a separate article with a slightly modified methodology is also appropriate. Moreover, it is from a higher price category and one can assume that its owners will be interested in how it handles dust filters. Firstly, because it is a fairly popular and widely used fan. For the measurements we used Noctua Fan NF-A12x25 PWM. We test the filters’ impact on airflow and also static pressure. Although its mesh is relatively coarse in this comparison, thicker filters are also used (sometimes with holes exceeding a millimetre), but for those the name “dust filter” is quite questionable. The latter has holes with a diameter of 0.8 mm. The grid of the nylon one is much finer than the plastic one. The image below is a close-up photo of the structure of both filters. A coarser mesh therefore doesn’t matter that much. Although it’s typically in the ceiling position, through which air is only sucked in atypical situations and tends to be pushed through by the exhaust fans. Cases from lower price ranges have it under the power supply (in more expensive cases there is usually a finer nylon filter in this place), but it is often found in higher end cases as well. While nylon is clearly more effective when it comes to capturing dust, plastic is considered a sort of cheaper alternative. For our first test (a three-part series), we’ve selected the two most commonly used types of filters in computer cases: nylon and plastic. But do you know which one degrades the performance of the fan more and by how much? One even “wheezes”, which is nicely indicated by a detailed noise analysis at 240 sound frequencies.īefore we release the first fan tests, let’s take a look at how dust filters affect airflow, pressure and noise levels. The fact that the plastic filter lets more through and is less efficient in this respect is already apparent from the eye, as it has a coarser mesh. The vast majority of computers use two types of dust filters – a fine nylon one and a coarser plastic one.
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