This is how often To change your HVAC filter

We’ve spent years working on HVAC systems, from furnace installations to heat pump repairs, and we’ve learned that one of the most crucial, yet often overlooked aspects of maintaining these systems, is proper filter management.

Whether you’re dealing with an older furnace or just regular upkeep, knowing when and how often to change your HVAC filter can save you a ton of headaches—and money.

Regular filter changes not only improve air quality, they also enhance the efficiency of your heating and cooling systems. In this article, we’ll help you understand exactly when and how often to change your HVAC filter.

Understanding the Right Time to Change Your HVAC Filter

Figuring out when to change your HVAC filter isn’t rocket science, but it does require a bit of attention. It’s more about knowing the signs rather than always sticking to a strict schedule.

spotting Signs Your Filter Needs a Change

The most important thing you can do is keep a close eye on your HVAC system’s performance, as it often gives away clues about the filter’s condition. If you notice a decrease in airflow from your vents or your energy bills suddenly spike, it’s usually a sign that the filter is clogged and needs replacing.

Also, pay close attention to the air quality in your home. If you notice you or your family start sneezing more often or you see dust accumulating faster than usual, it’s probably time for a new filter. These little changes are your HVAC system’s way of telling you it needs some love.

Seasonal guidelines for regular maintenance

First, it’s important to understand that using a seasonal schedule for filter changes is a good practice. In spring and fall, make it a point to change your filter as part of your routine home maintenance.

During the peak months of summer and winter, make sure to check your filter monthly and replace it if needed. Your system works harder during these times, so it might need more frequent changes to keep up.

How Often Should You change Your HVAC Filter?

While seasonal schedules and diligently checking your filter during peak months is important, how do you know exactly how often to change your HVAC filter?

The frequency of filter changes depends on a few factors like the type of filter and your home environment.

Factors That Affect Filter Lifespan

Living in a dusty area or having pets that shed can mean more frequent filter changes. The size of your home and how often you run your HVAC system also play a role.

The quality and thickness of your filter matter too. Thicker, pleated filters last longer but might strain your system if it’s not built to handle them.

changing Ductless heat pump hvac filters

While ducted heat pumps are treated very much like a traditional HVAC system, ductless systems (mini-splits), on the other hand, typically have filters designed to be cleaned rather than replaced.

These filters are located in the evaporator heads in the individual indoor units. These should be checked more frequently, about once a month, and cleaned if needed.

Step-by-Step Guide on Changing Your HVAC Filter

Changing your HVAC filter is pretty straightforward, but you need to do it right to avoid any issues.

Finding the Right Filter

First, check the size of your current filter. It’s usually printed on the side of the filter frame. If not, measure the length, width, and depth yourself. Even a slight size mismatch can mess with your system’s efficiency.

Next, look at the MERV rating, which tells you how well the filter traps particles. Higher isn’t always better; you need a balance that your system can handle.

Here’s a checklist for selecting the right filter:

• Measure the filter dimensions accurately
• Note the MERV rating of the current filter
• Consider any specific air quality concerns (allergies, pets, etc.)
• Check your HVAC manual for maximum MERV rating compatibility

Removing the Old Filter and Installing the New One Safely

Before you start, turn off your HVAC system. Remove the old filter, noting its orientation, and dispose of it properly. If it’s super dusty, you might want to wear a mask.

Gently slide the new filter in, making sure the arrows point towards the HVAC unit. It should fit snugly with no gaps around the edges. Once you’ve got it in place, simply turn your system back on. Keep an ear out for any strange noises that could indicate a problem.

Now that you know how to change your filter properly, let’s explore the options available.

Types of HVAC Filters

There are a few different options when it comes to HVAC filters, each with its own pros and cons.

Fibreglass vs. Pleated Filters

These are the most common types of HVAC filters and the ones people usually choose between. Fibreglass filters are cheap and allow for good airflow but don’t catch smaller particles well. They’re great if you’re on a tight budget and don’t mind changing them often.

Pleated filters trap more particles and last longer. They’re pricier and can restrict airflow if not changed regularly, but they make a noticeable difference in air quality.

The Power of HEPA Filters and Their Benefits for Indoor Air Quality

HEPA (High-Efficiency Particulate Air) filters offer a significantly higher level of filtration than standard fiberglass or pleated filters. They can remove at least 99.97% of airborne particles that are 0.3 microns in diameter, which includes many types of allergens and pathogens.

However, HEPA filters are not typically designed for standard residential furnace or HVAC systems due to their dense material, which can restrict airflow. Instead, a separate filtration system is installed alongside your existing HVAC system.

If you are interested in the highest level of air filtration and quality, check out more info here.

Recommended timelines for different filter types

• Fiberglass filters: Change every 30 days.
• Pleated filters: Generally good for 60-90 days.
• Washable filters: Clean every 1-3 months depending on season, replace yearly.
• HEPA filters: Every 6-12 months.
• Electrostatic filters: Clean monthly, replace every 6-8 years.

Tips for Maximizing HVAC Efficiency

Changing your filters is important but it’s just one part of the equation. Another key factor in maximizing your HVAC system’s performance and efficiency is to make sure you also maintain your outdoor unit.

Cleaning Around Your Unit to Ensure Proper Airflow

Make it a habit to clear debris around your outdoor unit. Leaves, twigs, and other junk can block airflow and strain your system.

Indoors, keep vents and registers clean and free from obstructions. This simple step can significantly improve your system’s performance and maintain consistent temperatures throughout your home.

Here’s a quick checklist:

• Trim plants around outdoor units.
• Clear debris from the base of the outdoor unit.
• Vacuum indoor vents and registers.
• Ensure furniture isn’t blocking airflow.
• Check for and seal any duct leaks.

Finally, it’s also recommended to have a professional technician perform an annual maintenance check. You can contact our team with any questions by emailing us or calling us directly at 289-497-8357.