Cleaning furnace filters are an important service for the Edmonton home. A furnace filter provides a way for dirt, dust, and other debris to be trapped in the filter, removing them from the air stream. This helps to improve the quality of the air inside the home. It can also help to improve the function of the furnace itself. There are a number of furnace filter types to choose from that provide different features for the quality of air coming from the furnace system. Before you choose the type of furnace filter to fit your needs, make sure you also have the right size of filter. The size of the filter you need can be determined by looking at the size of the filter already inside the furnace. This can give you the dimensions you will need. There are many standard sizes, but some furnaces will take a custom size. The best choice for these odd sizes is a washable filter you can cut to size. There are four main types of furnace filter available on the market. They are: pleated, HEPA, electrostatic, and activated carbon. All of these types have specific features that help to trap dust and dirt from entering the air stream. Furnace Filter Buying Guide A pleated filter is one that provides additional surface area for the dust and dirt to collect on the filter. The filter is contained inside a cardboard frame for durability. Pleated filters can be large, so this may not be the best choice for smaller furnace units. Pleated filters are also available with an electrostatic charge. An electrostatic filter is a type of filter that carries an electronic charge. This helps to attract particles to the filter. The electrostatic filter is one that made from materials that can be washed, so the filter can be used permanently with regular cleanings. To help prevent allergies and other irritants from getting into the air, choose a HEPA filter. A HEPA filter is often used to purify the air to reduce allergens in the home. These filters are more common in vacuum cleaners and stand-along purifiers because some HEPA filters can hinder the amount of air flow through the system. These filters, however, are still available for furnace systems. The last type of furnace filter is the type that uses activated carbon. The activated carbon works to absorb allergens like a HEPA filter, but activated carbon can also provide absorption of odors and hazardous chemicals in the air. Activated carbon filters are often used in factories and labs where many hazardous fumes may be present. Remember that any furnace filter should be replaced or cleaned once a month to maintain a quality air flow.