How Often Should You Replace Your HVAC Filters?

By Briggs Heating
on
Close-up of clean and dirty HVAC air filters side by side in bright room

Does your home or business feel stuffy? Does dust seem to settle everywhere—no matter how much you clean? Or maybe your energy bills have crept higher, but you can’t pinpoint why. The answer is often hiding in plain sight: your HVAC filter.

At Briggs Heating, we know filter changes are easy to ignore—until they’re not. Regular replacement is the single, most affordable move you can make for a healthier space, lower bills, and a trouble-free HVAC system. As your 24/7 emergency hvac partner, we’re here to help you do it right.

Why Filter Replacement Matters 🏡

Think of your HVAC filter as the lungs of your system. It traps dust, pollen, pet dander, and all sorts of invisible debris. Over time, filters fill up—just like a vacuum bag. When that happens, airflow slows. Your system strains. Air quality drops. And comfort, efficiency, and health suffer.

Dirty filters are a leading cause of sudden AC repair calls and furnace failures. The U.S. Department of Energy estimates that replacing a clogged filter can cut your air conditioner’s energy use by 5% to 15%. For allergy sufferers or anyone with pets, the stakes are even higher.

Signs It’s Time to Change Your HVAC Filter

Not sure if it’s time? Watch for:

  • Dust buildup on vents or furniture, even after cleaning
  • Musty or stale odors when the AC or heat runs
  • Allergy, asthma, or sinus symptoms flaring up indoors
  • Higher-than-usual energy bills
  • Weak or uneven airflow from vents
  • Visible gray or brown dust on the filter itself

If your filter looks like the lint trap after a dozen laundry loads, it’s overdue.

HVAC Filter Types and Life Expectancy

Not all filters are created equal. Some work hard for a month and need swapping. Others last much longer. Here’s what you need to know:

Common Types:

  • Fiberglass filters (the least expensive): Change every 30 days.
  • Pleated filters: Typically 60–90 days, but check monthly.
  • High-efficiency HEPA filters: 6–12 months, but may need more frequent checks in homes with pets or smokers.
  • Washable/reusable filters: Clean monthly; replace if worn or damaged.

Special Scenarios

  • Homes with pets: Change at least every 60 days.
  • Allergy sufferers: Every 30–45 days.
  • Commercial buildings: Follow manufacturer or ASHRAE guidelines—often monthly.

DIY vs. Professional Filter Service

Changing most home HVAC filters is straightforward: pop out the old, slide in the new, and you’re done. But the right size and type make a world of difference.

  • DIY: Great for accessible, single-stage filters.
  • Call a Pro: If you have a tricky system (like ceiling returns, commercial rooftop units, or specialty media filters), or you’re not sure what you need.
  • For larger buildings and businesses, scheduled, professional filter changes are a must for code compliance and warranty protection.

Briggs Heating offers a hassle-free filter replacement service for both homes and businesses. We carry a wide range of filter sizes and ratings, and we’ll make sure you get the performance you’re paying for.

Seasonal Considerations

Your filter’s job changes with the seasons. Spring and fall—when pollen counts soar—can clog a filter fast. Winter heating runs for hours, stirring up indoor dust. Summer AC pulls in air nonstop, especially during heat waves.

  • Spring: Check filters monthly (pollen).
  • Summer: Check every 30–60 days (heavy cooling).
  • Fall: Replace before heating season.
  • Winter: Inspect monthly if your system runs daily.

If you’ve recently renovated or had construction dust, change immediately.

Printable Filter Change Calendar

Keeping track can be tough. Here’s a simple filter change calendar to print and tape to your furnace or thermostat:

Filter Change Dates:

  • January ___
  • February ___
  • March ___
  • April ___
  • May ___
  • June ___
  • July ___
  • August ___
  • September ___
  • October ___
  • November ___
  • December ___

Tip: Set a phone reminder or mark your wall calendar the same day each month.

Maintenance Tips for Allergy Sufferers, Pet Owners, and Commercial Spaces

For Allergy Sufferers:

  • Use filters rated MERV 11 or higher.
  • Change every 30–45 days, especially in peak seasons.
  • Keep windows closed during high pollen days.

For Pet Owners:

  • Choose pleated filters that catch pet dander.
  • Vacuum regularly near return vents and registers.
  • Change filters every 60 days (or monthly for multiple pets).

For Commercial Buildings:

  • Follow ASHRAE Standard 180 for filter maintenance.
  • Replace filters monthly or as directed by equipment specs.
  • Keep a log of filter changes for code compliance and insurance.

Cost-Saving Benefits of Timely Filter Changes 💡

A clean filter does more than trap dust:

  • Slashes energy waste: Your system doesn’t struggle to “breathe.”
  • Reduces breakdowns: Fewer emergency hvac repairs (and frantic Google searches for “AC Repair near you”).
  • Extends equipment life: Motors and blowers last longer.
  • Improves air quality: Fewer sick days and allergy complaints.
  • Saves money: Filter replacements are far cheaper than major repairs or early system failure.

A $10–$40 filter can save you hundreds in the long run.

DIY or Call a Pro? How to Decide

DIY is best if:

  • Your system takes standard, easy-access filters.
  • You’re comfortable identifying size and type.

Call for professional help if:

  • Filter is hard to reach or requires tools.
  • You have a complicated commercial or multi-zone system.
  • You’re unsure about filter type, size, or installation direction.

Briggs Heating’s filter service is quick, tidy, and thorough. We’ll even handle disposal.

What Briggs Heating Pros Check During a Filter Service

When you call us for filter replacement or routine maintenance, we:

  • Inspect filter condition and airflow.
  • Check for proper filter fit (no gaps or bypass).
  • Ensure correct size and type for your system.
  • Inspect for dust/debris in returns and blower compartments.
  • Advise on filter upgrades for allergies, pets, or IAQ concerns.
  • Reset filter change reminders or smart thermostats.

We follow manufacturer specifications and safety codes, including local building requirements and ASHRAE recommendations.

When Is a Filter Issue an Emergency?

Most filter changes can wait a day or two. But call for 24 hour emergency hvac service if:

  • Your system shuts down or won’t start.
  • Ice forms on your AC coils or refrigerant lines.
  • You smell burning or see smoke from vents.
  • Airflow stops completely (especially in extreme heat or cold).

A severely clogged filter can trigger safety switches and leave you without heating or cooling at the worst possible moment.

HVAC Filter FAQs

How do I find my filter size?
Check the edge of your current filter or look inside the filter slot. Common sizes are printed on the frame.

Can I run my system without a filter?
Never. Even for a few hours, this risks blowing dust into every duct and damaging your blower.

Are expensive filters worth it?
Not always. The best filter is one that matches your system and your air quality needs—without choking airflow. Ask Briggs Heating for advice if you’re unsure.

What if my filter gets black fast?
This could signal mold, excess dust, or HVAC issues. Replace it immediately and call for an inspection.

Local and Seasonal Filter Considerations

Whether you’re in a busy household, a quiet office, or a pet-friendly shop, filter needs change with life’s rhythms:

  • Near busy roads: More dust and soot—change often.
  • During wildfire season: Use high-efficiency filters and check weekly.
  • After construction or renovations: Swap filters immediately.

No matter the season or setting, Briggs Heating is ready to help—day or night.

Ready for clean air, lower bills, and fewer HVAC headaches? Call Briggs Heating now — or reach us anytime at  877-748-7966 .

Heating issues? Briggs is ready to help. | Speak to an Expert 877-748-7966