How Often Should You Change Your HVAC Filter?

a person wearing yellow gloves is changing an HVAC filter

ome. A clean filter keeps the air you breathe clean and free from contaminants. It also helps your HVAC system run smoothly, reducing energy consumption and preventing potential damage to the system.

Factors Affecting HVAC Filter Replacement Frequency

Several factors influence how often you should replace your HVAC filter.

Type of Filter

Different filters have varying lifespans. Basic fiberglass filters, which are the most affordable, typically must be replaced every 30 days. Pleated filters offer better filtration and can last between 60 to 90 days

High-efficiency particulate air (HEPA) filters, which are more expensive, can last up to six months, depending on usage and environmental factors. HEPA filters can remove 99.97% of airborne particles, so it’s worth the investment.

Household Size and Activity Level

If you have a large household or family members are frequently home, your HVAC system will work harder to keep them comfortable at all times. This leads to faster filter clogging. Homes with pets or smokers may require frequent filter changes due to more dander and smoke particles. Check your filter every 30 to 45 days for best results.

Allergies or Respiratory Conditions

If someone in your home suffers from allergies or respiratory conditions, changing the filter more often will keep the air quality the best it can be. Check your filter every 30 days to ensure it can pull contaminants from the air.

Seasonal Changes

During peak usage seasons, like our Minnesota summers and winters, your HVAC system runs more frequently. This increased operation means the filter will clog more quickly and need replacement sooner.

Environmental Factors

If you live in an area of Minnesota with high levels of pollution, the filters will accumulate dust and debris faster, necessitating more frequent changes.

Benefits of Regular HVAC Filter Replacement

Consistently changing your filters has several key benefits, including a healthier, more comfortable living environment and a longer-lasting HVAC system. Here are the primary advantages of keeping up with regular filter replacements.

Improved Air Quality

Regularly replacing your HVAC filter ensures your home has clean, healthy air free of dust, allergens, and other contaminants. This air quality is especially important for those with allergies or respiratory issues.

Enhanced HVAC Efficiency

A clean filter allows your HVAC system to run more efficiently, reducing strain on the system. This can lower your energy bills and extend the lifespan of your HVAC unit. An efficient HVAC system uses less energy, reducing your utility bills while lowering your carbon footprint.

Preventing System Breakdowns

Clogged filters can cause your HVAC system to overheat and malfunction. Regular filter replacement helps prevent costly repairs and unexpected breakdowns so your home feels comfortable regardless of the season.

How to Replace Your HVAC Filter

Replacing your HVAC filter is a simple task you can do by following these steps.

  1. Turn off the HVAC system: Before replacing the filter, turn the system off to prevent any dust or debris from getting sucked into the unit.
  2. Locate the filter: The filter is usually in the return air duct or the blower compartment of your HVAC unit.
  3. Remove the old filter: Slide out the old filter carefully to avoid spreading the collected dust.
  4. Insert the new filter: Insert the new filter, lining the arrows on the filter frame in the same direction as the airflow.
  5. Turn the system back on: With the new filter securely in place, turn your HVAC system back on and reap the benefits.

Regular HVAC filter replacement is a simple task that significantly impacts your home’s air quality, HVAC system efficiency, and overall comfort. Understanding the factors influencing how often you should change your HVAC filter and following the general guidelines helps you maintain a healthy living environment. 

Prioritize HVAC maintenance and enjoy the benefits of cleaner air. Need help? Call Schwantes at 651-439-3331 to schedule maintenance or get emergency assistance.

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