When to Replace the Furnace Filter

When to Replace the Furnace Filter


No furnace system would be able to function as well if it wasn’t for the furnace filter. The furnace filter is responsible for making sure that the air you breathe is clear and free of pollutants. In addition to the air itself, all parts of the furnace system have the furnace filter to be thankful for not being full of dirt and grime constantly.

Of course, the furnace filter will, after a certain period of time and use, get dirty itself and will no longer work “as advertised”. That’s how you will know it’s time to replace the old filter with a new one. Leaving a filter like that running will only shorten the lifespan of other parts in the heating system, as they all depend on each other in order to function properly.

Replace the Furnace Filter at Least Once per Month

The rule of the thumb is that you should do this at least every second month. It’s even better, especially if you use the furnace a lot, that you change it every month.

In places where the furnace is used almost non-stop, 24/7, such as in an office, the filter should be replaced even more often, every few weeks.

Of course, how often you need to change the filter also depends on its type. Since there are several types of furnace systems, each with their own kind of filters, it stands to reason that some will need replacing sooner than others.

There are other factors you need to consider in deciding when to change the furnace filter as well. For instance, if you have pets, you’ll likely have to change it more often. Also, the quality of air in the room the furnace is installed will also be a big factor. If there are a lot of people smoking in the house or office, the filter will have a shorter lifespan.

The bottom line, however, is that you shouldn’t wait for the filter to get black from dirt, but to check it often and replace it when it is no longer able to clear the air like it should.

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