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One of the most important steps you can take to keep your furnace and home HVAC system running efficiently and cost-effectively is also one of the simplest: Regularly check and replace your furnace air filter.

A dirty air filter will not only reduce the efficiency of your heating system, but it can also lead to a variety of problems. Should you encounter furnace issues, give the local pros at Comfortec a call.

However, by following the tips in this article, you should be able to avoid serious furnace troubles.

How do air filters work and how do they protect my furnace?

Air filters play a key role in keeping your furnace running efficiently and reliably. They are designed to trap particles in the air, preventing them from entering your furnace and potentially damaging its components. Air filters come in different sizes and grades, with higher-grade filters able to filter out more particles than lower-grade ones.

Having a clean air filter helps your furnace run more efficiently, which can save you money on energy bills. A dirty filter can cause restricted airflow, leading to potential damage to its components as it overheats. That’s why it’s important to change your air filter regularly - typically every 3 months - so that you can ensure that your furnace runs optimally.

When choosing an air filter for your furnace, make sure you select one that is the correct size and grade for your system. It’s also important to purchase quality filters from reliable sources - this will help ensure that they last longer and do their job properly. You can find these types of filters online or at most home improvement stores.

By changing your furnace's air filter regularly, you can help prevent many common issues and keep it running smoothly for years to come. But if you do encounter any unexpected problems, don't hesitate to call the local pros at Comfortec right away!

How often should I change my furnace air filter?

When it comes to furnace air filters, the frequency of changing them depends on a few factors. Generally, it is recommended to replace the filter every one to three months. However, this can vary depending on how many people and pets live in the home as well as other environmental factors such as dust levels or presence of allergens. For those with allergies or asthma, replacing the filter more frequently - ideally every month - is best.

It is also important to check the condition of the filter each month and determine if it requires changing sooner than expected. For example, if a filter appears dirty after a few weeks then you may need to replace it more often than normal.

When shopping for furnace air filters, make sure to look at their MERV rating – which stands for Minimum Efficiency Reporting Value – as this will tell you how well they trap particles in the air. Filters with a higher MERV rating will be able to trap smaller particles but will require more frequent changing compared to lower rated filters. Additionally, make sure that you purchase quality filters from reliable sources that are designed specifically for your system's size and grade requirements.

Signs that you need to change your air filter immediately

Regularly check the condition of your furnace air filter and change it when necessary. But how do you know when to replace it? Here are some signs that suggest a new air filter is needed right away:

A decrease in air flow can be a tell-tale sign of an unclean filter. If your furnace is not sending out its usual amount of air, or if the airflow has decreased significantly, this could mean the filter is clogged with dust and debris.

If you have seen an unexpected increase in energy costs, this could also be a symptom of needing a new filter. Blocked filters cause the furnace to work extra hard, resulting in higher electricity bills.

Look for dust particles emerging from vents as they may signal that the filter needs replacing. If you notice dirt making its way through the vents or unusually dirty conditions persisting for longer than normal, dirt may be bypassing the filter and entering into ducts - this warrants an immediate replacement.

Strange noises coming from your furnace can also indicate a need for a new filter. Make sure to listen out for any unusual sounds as they could point towards obstructed airflow due to blocked or damaged filters.

Musty smells coming from vents may also mean it’s time for replacement; old filters become damp over time which contributes to unpleasant odors around your home.

What happens if you don’t change your furnace air filter?

Not changing your furnace air filter regularly can lead to a number of problems. The most serious is the risk of your furnace overheating and shutting down, which can reduce its efficiency and increase energy costs. This is because clogged filters restrict air flow, making it difficult for the furnace to circulate heated air.

Another problem associated with not replacing your air filter regularly is poor indoor air quality due to dust and dirt accumulation. A dirty filter will allow pollen, bacteria, allergens, pet dander and other airborne particles to circulate in your home. This can lead to respiratory issues such as asthma attacks or allergies flaring up, as well as increased fatigue and headaches.

Finally, a clogged air filter can cause cracks in the heat exchanger of your furnace. This is because the heat exchanger needs an adequate amount of airflow to cool itself down while running. If there isn’t enough airflow then the metal used for the heat exchanger will expand due to excessive heat build-up and eventually crack over time. Such repairs require professional help and can be costly if neglected for too long.

Where to buy quality furnace air filters?

When it comes to purchasing quality furnace air filters, it is important to look for a filter with an MERV rating of 8 or higher. This rating indicates that the filter is designed to trap small particles and offer better air filtration than lower rated filters. Also, make sure you choose an air filter that is designed to fit the exact size and shape of your furnace. This will ensure the best performance from your HVAC system.

For those looking to purchase quality furnace air filters, there are several options available. Online retailers often offer a wide selection of products at competitive prices, while home improvement stores may be able to provide more specific advice on what type of filter would work best for your system. Additionally, many HVAC supply companies offer high-quality furnace air filters that are specifically designed for residential HVAC systems.

No matter where you choose to purchase your furnace air filter, make sure it meets the size and grade requirements outlined by the manufacturer as well as carries an appropriate MERV rating. Doing so will ensure optimal performance from your furnace and help keep energy costs down over time.

Remember: A clean furnace air filter can help improve indoor air quality and could potentially extend the life of your heating system.