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Air Exchanger Filter: How to Know if It’s Time to Replace It

As you probably know, breathing quality air is a guarantee of good health. Modern homes are particularly airtight and insulated, so it’s not always easy to refresh the air inside without having to open the windows. This can cause real problems, especially during periods of extreme cold. Fortunately, some equipment – such as air exchangers – let you refresh the air inside the house. Are you wondering if it’s time to replace your air exchanger filter? Here are some possible answers.

Why is it so important to replace the air exchanger filter?

The role of the air exchanger is to suck up the clean air outside and expel it inside the house (and vice versa) to provide fresh, healthy air. Indeed, indoor pollution is significant; it can be caused by the presence of VOCs (volatile organic compounds) in the furniture, toys, appliances, etc., but also by the presence of paints that release harmful substances, by cooking, and by many other factors.
In principle, the air exchanger should – as its name indicates – “exchange the air” between the inside of the house and the outside, but after a while, it’s no longer effective, especially if the filter is clogged. A filter with obstructed holes is useless; it blocks the air supply or expels polluted air inside the house (especially when toxic particles or allergens get lodged in the filter). It’s therefore essential to replace the air exchanger filter regularly.

How often should the air exchanger filter be replaced?
It’s strongly recommended to replace the filter at least once every three months. In some cases, it’s best to repeat the operation even more often. You should check your filters every month if you live near a busy street, a dirt road that creates dust, an area where firewood is widely used, or even during pollination periods. If it seems that your home is particularly exposed to pollution, you should also check the condition of your air exchanger filter without waiting three months.

Important note: make sure to turn off and unplug the device before doing any work on it.

How to know if it’s time to replace the air exchanger filter
It’s quite simple to know if the time has come to replace the filter. To do this, just observe your equipment; if the air diffusion grille on the wall looks dirty, then it’s very likely that the filter needs to be replaced. Does the filter seem clogged? If that’s the case, don’t wait any longer, because that means that the air in your home is polluted. It’s therefore best to turn off the exchanger while waiting to buy a new filter. Ideally, consider always having spare filters or make an appointment with a company specializing in air exchanger maintenance. Relying on a professional will let you make sure that the air in your home is healthy and clean; you’ll also be able to count on their know-how to take advantage of an optimal cleaning of your device.

If you want to clean the air exchanger filter yourself, you should check several points. For example, consider cleaning the intake grille as well as the ducts; if water is stagnating inside, your air will be polluted due to mould. You should also take a look at the grilles inside the house. If necessary, clean them with a vacuum cleaner, then a microfibre cloth. These few precautions might let you keep your filter longer, but you’ll still need to call on a specialized company to check the condition of your air exchanger from time to time.

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