A variety of quality furnace filters are on the market for homeowners of diverse needs and specifications. Furnace filters are either disposable, requiring monthly to bi-monthly changing, or permanent, which can be cleaned as needed. However, most customers will find that the cheaper, disposable furnace filters cost more long-term since they require constant changing. An average-quality, permanent filter can be purchased for an approximately carpet restoration Melbourne equivalent cost to a year’s supply of.
Individual needs of the consumer are the main factor to consider when selecting a furnace filter. Customers with heating-season allergies will need to find a filter designed specifically to eliminate airborne allergens such as pet dander and dust. Some of the the highest-rated allergen filters are the Filtrete Advanced Allergen Filter and the Honeywell Ultra Efficiency Air Cleaner.
Quality is a major factor in selection, and is easily evaluated using the industry rating standard known as MERV: Minimum Efficiency Reporting Value. This rating is determined based on factors determined by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE). A MERV rating ranges from 1-12, with good filters averaging at 8 or above. Filters with a higher MERV rating tend to cost more, but a customer requiring a higher level of air filtration due to allergies or asthma may find that the costlier filter is worth the price.
One of the most popular furnace filter brands on the market is the Filtrete. In addition to high MERV ratings on all their products, Filtrete created their own system for rating filter effectiveness known as Microparticle Performance Rating (MPR). This measures effectiveness in filtering the tiniest particles, sized between 0.3 and 1.0 microns. In theory, this quantifies effectiveness for the sake of comparison, with an MPR of 1000 generally denoting double the effectiveness of a filter rated 500. The highest-quality Filtrete filter is given an MPR of 1500, whereas typical competing filters are rated between 55 and 295.
Filtrete produces a number of high-performance models, including the Dust & Pollen Filter, Micro Allergen Filter, Ultra Allergen Filter, and Advanced Allergen Filter. The Micro Allergen Filter is specifically designed to remove pet dander, which tends to stay in the air much longer than regular dust particles, and is tougher to filter because of its smaller particle size. The Advanced Filter has the highest MERV rating at 12, and consistently receives positive consumer reviews. Filtrete claims the filter is 93% effective in removing even the smallest air impurities, including pet dander, smoke, and even illness-causing bacteria.