Posted by The air furnace of heating systems generally use a filter to trap small airborne particles and prevent them from entering or staying on the heating coils and the fan. With this function, air filters also improve the quality of air that circulates around an enclosed environment. It is therefore important to regularly clean or replace your filters as dirty ones add more strain on the heating system and may likely cause it to malfunction or breakdown. For more information on why this is critical to a smoothly running system visit the Heating and Air Guide.
The optimum efficiency of the filter depends on several factors. Usually, low-cost fiberglass filters need to be replaced at least once after three months, depending on the environment and on how it is used. High-efficiency filters, on the other hand, commonly last for three months to a maximum of one year. Some portable propane heating systems, however, are equipped with washable, reusable filters. Filters of this type must be rinsed out every month.
While economical fiberglass filters can trap larger particle, they are not quite useful in capturing pollen or other airborne allergens. To obtain the optimum filtration benefit from a heating system, it is advisable to put in high-efficiency (HE) air filters. This filter type commonly comes in pleated and dense weave material. High-efficiency filters can effectively trap smaller airborne particles as compared to electrostatic and fiberglass filters.
If you are unsure of what type of replacement you need to purchase for your old filter, it is most advisable that you bring the old one with you to the store. On a typical heating system, the filter is commonly seen at the cold air intake – a big rectangular vent located close to the furnace – or at the furnace itself. To remove your old filter, turn off the heater first and detach its removable panel for easy access. Most importantly, be sure to purchase the appropriate replacement filter applicable for the unit you are using.
