Can a Dirty Filter Stop a Furnace From Working in Indian River Estates, FL?

Indian River Estates is known for its balmy year-long weather, but that doesn’t mean temperatures stay toasty. In the winter here, you’ll need to rely on a furnace to keep warm, but if you haven’t changed the filter in a while, that might prove challenging. 

Can a dirty filter stop a furnace from working? Discover the answer below, then call us to schedule HVAC services in Indian River Estates, FL.

The Important Role of Your Furnace’s Air Filter

Furnace filters feature a fine cloth screen that blocks dust and debris, such as pet dander, from getting into the system and blowing through your home’s vents. It also prevents buildup on the furnace’s coils, which must remain clean to keep the system operating properly.

All furnace filters have a Minimum Efficiency Reporting Value rating that ranges from 1 to 16. Your unit’s MERV rating is a measure of how efficient its filter is at capturing particles. For example, low MERV-rated filters can trap pollen, dust, lint, and mold spores. At the highest MERV ratings (between 13 and 16), the filter can also block fine pet dander, tobacco smoke, auto fumes, and certain viruses and bacteria.

Can a Dirty Filter Stop a Furnace From Working?

Your furnace has given up the ghost, leaving your Indian River Estates home much too chilly one winter day. You check out the system, noticing a filter packed with a dusty film. You wonder, “Can a dirty filter stop a furnace from working?”

As we’ve seen, it certainly can. 

One reason is the restricted airflow that a dirty filter causes. Your furnace will have to work harder to warm your home, causing blower motor strain, a clogged heat exchanger, and overheating issues. To prevent serious damage, your furnace might temporarily shut down, and you won’t be able to use the system for a while until it cools off. 

Is the furnace turning off, on, and back off again quickly? This short-cycling is also problematic. Ignore the filter for too long, and the unit might quit working completely, costing you hundreds to repair. 

Given that furnace filters are so inexpensive, replacing them regularly is a great investment.

Other Problems a Dirty Filter Can Cause for Your Indian River Estates Home

Can a dirty filter stop a furnace from working? Yes, but a broken furnace isn’t the only problem you can end up with if you allow the unit to work with a filthy filter. You may also experience the following issues:

• Bad air quality: Can the furnace’s filter no longer trap contaminants because it’s dirty? Where do those contaminants go? That’s right: floating around in your home’s air and waiting for asthma or allergy sufferers.
• Cold spots: A filthy filter doesn’t always immediately lead to a furnace breakdown. Before that happens, you might notice that some parts of your house feel colder.
• High heating bills: A dirty heating system causes reduced efficiency. Your energy bills will shoot through the roof.

When Should You Swap the Air Filter for a New One?

Most experts advise replacing your filter every month. Is that really true? 

• If your filter measures 1 to 2 inches thick, then yes – it will need replacement every 30 days. 
• Filters measuring 3 to 4 inches might be okay to replace every six to nine months. 
• The 5- to 6-inch filters require replacement every nine months to a year.

Still, if you can’t remember the last time you changed your filter, it’s probably due for a replacement. Here are some other signs that your HVAC filter needs changing:

• Your filter is almost completely black. Clean filters are almost entirely white.
• Your heating unit runs non-stop. A broken part is less likely than a simple dirty filter.
• Your heating bills are suddenly very high. If you’re not using the furnace more than usual, look at the filter.
• Your furnace frequently stops working, and the unit feels hot to the touch. Once it cools down, it runs fine again.
• You’re sneezing, sniffling, and coughing a lot. If these symptoms are worse inside your home, change the filter.