Are you faithful about changing your furnace filter every 30 days? If you have an HVAC unit, the filter also cleans the air when you are using the air conditioner. My Father’s Mechanical is going to list the different types of furnace filters below. This can help you choose the best filter for your needs. It’s important to note that not all filters work in all furnaces, so make sure to use the filter size and type that is recommended by your HVAC manufacturer.
Fiberglass – Disposable
Disposable fiberglass filters are the most common filters on the market. These are the ones that you can buy at the hardware store or supercenters. These filters are made from fiberglass and they do a good job of preventing large particles from being circulated through the air. Unfortunately, they don’t do a great job of dealing with smaller particles that irritate people with allergies and asthma. These filters are inexpensive, so they work well for people on a tight budget.
Pleated – Disposable
A more popular filter choice is a pleated disposable filter. These filters are made from polyester or cotton paper fibers. They are also affordable and environmentally friendly. These filters do a better job of dealing with smaller particles such as mold spores and dust mites. You need to change these filters every 30 to 90 days depending on the filter type that you buy.
Electrostatic – Disposable
Made from paper or cotton fibers, electrostatic filters do a better job of capturing small particles floating in the air because they are electrostatic. In other words, they are charged to attract these small particles. The disposable electrostatic filters are affordable, but they can get pricey if your HVAC unit takes a custom size. These filters work well to clear the air in homes where people smoke and there are a ton of pets.
Electrostatic – Permanent
Your HVAC unit may already be equipped with an electric static filter that is permanent. This filter is machine washable, so rather than replace it, you take it out and clean it yourself. On average, permanent electrostatic filters last up to eight years, but if you live in an area that is particularly dusty, you may need to replace your permanent electrostatic filter sooner.
Pleated – High-Efficiency
Finally, if you suffer from serious respiratory issues or other illnesses that are exacerbated by unclean air, you may do best to use a high-efficiency pleated filter in your HVAC unit. Size could be a problem, however, as these filters can be thick. Hospitals use these filters to keep the air as free as possible from irritants, germs, and other contaminants.
If you are unsure which filter is best for your HVAC unit, call My Father’s Mechanical in San Antonio, TX, today. We’d be happy to inspect your unit and recommend the right filter.