The furnace filter is a critical component of your home’s heating system. It helps to remove dust, allergens, and other debris from the air, allowing you to breathe easier. Keeping your furnace filter clean and regularly changed is essential to keep your furnace running efficiently and prevent costly repair bills.
But how often should you change your furnace filter? This question’s response is dependent on a number of variables. Your furnace can run more efficiently and last longer if you are aware of these factors and when to replace your filter.
The sections below show a few factors that you need to consider when you feel like changing your furnace filter.
Home Situation
If you value cleanliness in your home, you’ll probably notice when it’s lacking. And if your furnace filter is malfunctioning, this can occur more frequently. Your house will begin to accumulate more dust when it isn’t doing its work since it isn’t passing through the filter and getting caught when it isn’t doing its job.
Because there is more air moving around in a larger home, the filter needs to be changed more frequently. You won’t have to change it as frequently if your home is smaller.
If you have dogs and cats, there is a higher chance that their dander and fur can spread allergens throughout the house. This can quickly block the furnace filter, requiring more frequent replacements.
In this situation, you should swap it out every two months. A six-week rotation can be appropriate if you have multiple pets.
If you have kids and frequently host guests, you should replace the filter more frequently. Children can bring in germs from school and filth from playing. Allergens from the outside are also brought in and out by visitors.
In addition to these aspects, you should change it more frequently if you have a family member who suffers from allergies, asthma, or another medical condition.
The Filter’s Thickness
A thicker filter will have a greater surface area to gather dust and grime. As a result, you won’t need to change it as frequently. Depending on the conditions in your home, you can replace your furnace filter every thirty to ninety days if it is less than two inches thick.
Filters between three and four inches can last longer—anytime between six and nine months.
Energy Costs
Failing to replace your furnace filter can result in higher energy bills, decreased efficiency, and a shorter lifespan for your furnace. When left unchanged, dirt and other particles accumulate in the filter, which results in restricted airflow throughout your home. This leads to your HVAC system needing to work harder to heat and cool your home, resulting in increased energy consumption.
Not only can this cause a strain on your budget, but it can also lead to unnecessary wear and tear on your heater, which can reduce its lifespan. A dirty filter causes friction, which puts extra strain on the motor by creating too much air resistance.
Over time, this will cause the motor to weaken, resulting in costly repairs or even a complete system replacement down the road.
Health Risks
Poor indoor air quality can occur when the filter becomes saturated with dust, pollen, pet dander, mould spores, and other pollutants that can be hazardous to your health. Breathing in these particles can cause allergy-like symptoms such as sneezing, coughing, and watery eyes.
For those suffering from asthma and other respiratory issues, this can trigger worsened symptoms and bronchial irritation.
In addition to respiratory effects, neglecting your furnace filter can also increase the risk of bacterial growth. With the build-up of dust and debris on the filter, bacteria, mould, and fungi may take hold, which can then become airborne and be inhaled by occupants in the home.
This can lead to illnesses such as headaches, nausea, and dizziness, as well as other more serious conditions.
Conclusion
Don’t put off replacing your filters. Your furnace filter should be changed approximately every three months or ninety days. Waiting too long will damage the filter furnace.
Anything from a single damaged component to a furnace failure as a whole could be the cause. This is because the filter has to work harder to push air through the house when there is dirt on it, which shortens its lifespan.
Fortis Heating & Air Conditioning is here to help with your furnace maintenance in Oshawa! We are a local HVAC company located in the Durham Region, servicing local families from Oshawa to Cobourg.
Call us whenever you need maintenance, an inspection, a repair, an installation, or someone to provide sound HVAC recommendations.