Quick Answer: Why Is My Furnace Filter Getting Dirty So Fast?

Why does my furnace filter get dirty so quickly?

When the thermostat’s fan setting is set to “ON” the indoor blower will run 24/7, constantly circulating air over the air filter.

So now the filter is constantly catching airborne contaminants, causing it to quickly get dirty.

Furthermore, your energy bills are higher because running a blower nonstop ain’t cheap..

Can I vacuum my air filter?

Vacuuming a Filter Can’t Reach the Inner Fibers The contaminant particles can get buried deep in the filter’s fibers, so a vacuum cleaner won’t extract all of them. The particles will create a barrier in the air filter and prevent air from passing through, which could damage your HVAC system or make it less efficient.

What are the signs of a bad air filter?

Common Signs of a Dirty Air FilterReduced fuel economy. … Misfiring engine. … Unusual engine sounds. … Check Engine Light comes on. … Air filter appears dirty. … Reduced horsepower. … Black sooty smoke or flames exiting the exhaust. … Smell of gasoline when starting the car.

Is no air filter better than a dirty one?

Without a filter there to trap air pollutants, your home’s air quality will deteriorate. That’s because the same air contaminants will just circulate through your home. But what’s worse is that you’re likely bringing even more pollutants into your home on a daily basis.

Why do my air filters get black so fast?

The main purpose of your air filter is to catch the dust particles and other debris in the air. The more there is, the quicker your air filter will become clogged. If you don’t regularly check your furnace filter often, the sheer amount of dirt could make the air filter black.

How can I tell if my furnace filter needs changing?

How Can I Tell That My Furnace Filter Needs to Be Changed?Filter is a different color. … Energy bills are higher than usual. … Low air flow. … Rise in physical issues. … Headaches. … Allergies. … Carbon monoxide poisoning. … Forces HVAC systems to work harder.More items…•

Can a dirty filter break a furnace?

A dirty furnace filter restricts airflow to the furnace, leading to higher energy spending, poor heating performance, and even a potential heating breakdown. … Your furnace may break down well before its expected lifespan and you’ll probably notice reduced heating in one or more areas of the house.

How often should furnace filter be replaced?

every 90 daysThe general rule is to change a furnace filter—usually located behind a return-air vent or in a slot on the furnace itself—at least once every 90 days.

Do air filters work better when dirty?

Air filters cannot work better when dirty, once it is clogged with dirt; it blocks the free flow of air into the air conditioner and out of the air conditioner. … Air filters actually remove more particulates from the air flow as they become dirty. The air flow decreases as the filter gets dirtier.

Can a dirty furnace filter cause carbon monoxide?

How a dirty air filter can lead to CO poisoning. Here’s the brief explanation: a clogged filter reduces air flow and causes your furnace heat exchanger to overheat and crack. Once the heat exchanger cracks, poisonous carbon monoxide can leak into your home.

Should I buy expensive furnace filters?

Yes, in general, the more expensive air filters are more effective, but a single person with no pets and allergies might not need as much filtration as a family of five with three pets and a child with asthma. Also consider how long your air filter will last.

What happens if I put my furnace filter in backwards?

When a furnace filter is placed backwards, the fibers can’t do their job properly. This means your furnace has to work harder to generate the same air flow, resulting in increased energy costs. Particles are also allowed to build up irregularly, making the furnace working even harder to draw air.

Can a furnace catch on fire?

A: Yes, a furnace can catch fire. The following are reasons your furnace can catch fire: Your furnace’s air filter is blocked. Your furnace’s gas pressure is too high.

What problems can a dirty furnace filter cause?

A clogged furnace air filter will negatively affect the airflow throughout your house and HVAC system. The lack of fresh air in your furnace will cause the heat exchanger to become too warm and deactivate. Dirty filters indirectly cause short cycling issues and will make it hard to keep your home warm.

What causes air filters to get dirty?

Leaks in your air ducts introduce dust and dirt from areas like your attic. The more dirt a leaky duct system brings into your home, the more dirt your air filter accumulates.

How dirty should an air filter look?

Dirty Air Filter Performing a visual inspection is an easy way to know if your air filter needs to be changed. A brand new air filter is white or off-white in color, while a dirty air filter will appear darker with the dirt and debris visible.

How long do air filters last?

60 daysFor basic 1″–3″ air filters, manufacturers typically tell you to replace them every 30–60 days. If you suffer from light to moderate allergies, you could install a better air filter or replace them even more regularly.