How important is furnace filter?

Healthy air. … Changing the air filter in your furnace regularly will prevent dust, dirt, mold spores, soot, bacteria, and allergens from building up in the air inside your home. The life of your furnace and the health and safety of your family depend on regular heating system maintenance.

Are furnace filters necessary?

NO. A furnace filter has a critical job to perform and a filter cannot be run without one. For a furnace to work properly, it should always be equipped with a clean, working filter. As we’ll see, a dirty filter can cause problems, and so can having no filter at all.

What happens if you don’t replace furnace filter?

Short Cycling. If the air filter is not serviced often enough, it will eventually become clogged to the point that air cannot pass through it. When the furnace is operating, the lack of air flow will trap the heat in the system. … Without a new air filter, the furnace will overheat every time it starts up again.

Do furnace filters make a difference?

A clean filter will not only allow your furnace and A/C to operate at peak performance, thus saving you money on energy bills, but it will also prolong the life of your furnace.

Will furnace stop working if filter dirty?

Dirty furnace filters

Dirty air filters are often the culprit behind an inefficiently performing furnace. That’s because air filters trap dust, dirt and debris like hair, which over time can restrict or block vital airflow, overheating the heat exchanger and preventing your furnace from working as it should.

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Is no air filter better than a dirty one?

Running your air conditioner without a filter is worse than running it with a dirty one. Instead, get to the store as soon as possible for a replacement or call an HVAC professional for replacement. Without a filter, your air conditioner is at risk for severe and expensive problems.