Quick Answer: Why Does My Furnace Filter Get Dirty So Quickly?

What problems can a dirty furnace filter cause?

Furnace Issues Caused By Dirty Air FiltersDamage to the Heat Exchanger.High Heating Bills.Poor Indoor Air Quality.Clogs May Cause the Furnace to Shut Down.Inability to Reach a Comfortable Temperature..

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 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.

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.

Are cheap furnace filters as good as expensive ones?

Cheap fiberglass filters are designed to stop dust, debris and hair from gunking up the system. While they do little to filter out allergens and other irritants, using them keeps your HVAC system clean and efficient. … They can add more resistance to airflow, which makes the system more expensive to operate.

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.

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.

How often should I clean my furnace filter?

A good rule of thumb is to change 1-2 inch filters every three months, 4 inch filters every six months and 5 inch filters every 12 months. Signs your air filter needs changed: The filter is visibly dirty. Certainly if you can’t see the material of the filter itself, it should be replaced.

How can I tell if my furnace filter needs changing?

Watch out for these signs that signify the time to replace your furnace filters.Your Bills Creep Up. If your bills have been cranking up, dirty and clogged filters might be the culprit. … You’re Getting Sick. … You Notice a Burning Smell. … Less Heat, Longer Runtime. … Your Home is Dustier than Before.

What does it mean if your air filter is black?

If you’ve recently changed out your air filter and noticed it was black, you’re experiencing something called “black soot deposition. Essentially, black soot deposition is just an excess build-up of soot, which is typically the result of: A gas appliance or fireplace that isn’t burning fuel properly. Scented candles.

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.

How often should you change air filters in your house?

As a general rule, you’ll want to replace pleated air filters and furnace filters in your home every 90 days. The longer the filter is in place, the more dirt, dust and allergens are trapped clogging the filter and decreasing their efficiency.

Do air filters work better when dirty?

The particle catching efficiency actually goes up as the filter gets dirty; buildup on the fibers shrinks the openings the air passes through and allows the filter to capture more particles. … The particle-removing efficiency of the filter is inversely related to the energy efficiency of your heating and air system.

How do I know if my furnace air filter is dirty?

Signs your furnace filter needs changing:The filter is noticeably gray in color, and you can see dirt and dust built up on the filter media.Your home is dustier than usual.Your heating or cooling system is cycling longer than it usually does.More items…

How do I know if my HEPA filter is dirty?

You can tell if an air purifier is working well if you see debris, hair or dust in the filter, but not enough to completely clog it up. If it’s too dirty, chances are it needs replaced. Keep in mind that this only works for HEPA purifiers, as carbon filters won’t show any outward signs of aging.