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Air Conditioner Sales & Service – Furnace Sales & Service – Air Duct Cleaning

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4 Inch Furnace Filters

If you have a 4 inch furnace filter , it’s important to change it periodically so that your heating and cooling system can work its best. A 4 inch furnace filter typically lasts for about 3 months before it needs to be replaced. To extend the life of your filter, make sure to clean it regularly with a vacuum cleaner. Additionally, be sure to change your 4 inch filter when the air quality in your home gets noticeably worse or if you start seeing dust and debris build up on it.

Overall, maintaining a 4 inch furnace filter is an important part of keeping your heating and cooling system working efficiently and ensuring that the air inside of your home stays clean and healthy. By changing your filter on a regular basis, you can help keep your furnace running smoothly for years to come.


If you suffer from allergies, a good air filter can make a huge difference. By trapping allergens and airborne particles, it can help to reduce symptoms and provide relief.

image of a dirty 4 inch filter that has captured dog hair and other allergens.
image of a used 4 inch filter that has captured dog hair and other allergens.

MERV stands for Minimum Efficiency Reporting Value, and is a measure of an air filter’s ability to remove contaminants from the air. The higher the MERV rating, the more effective the filter will be at trapping allergens and other particles.

If you’re looking for an air filter that can help to improve your allergy symptoms, look for one with a high MERV rating.

Pet Owners

Pet owners know that it’s important to keep their air healthy for their family and pets. Pet dander and fur can be filtered out through the HVAC system so that your home is a healthier place to breathe. When considering a filter change, you may want to look at how much your pet sheds or how many pets you have as that can be a factor on how many times you will need to check or replace your filter.

When considering a filter replacement, consider how much your pet sheds or how many pets you have, since this might affect how frequently you need to inspect or replace your filter.  Pets might also be an excellent reason for considering an upgraded or higher MERV filter for your HVAC system.

By doing so, you can help ensure that your home is as healthy and comfortable as possible for everyone in it. By doing so, you can help guarantee that everyone in your house is as healthy and comfortable as possible.


Although candles can smell good and help improve the ambience in any room, they can also lead to an unhealthy quality of air. Smoke and soot can end up clogging your air filters. If you want to burn candles and have clean air, changing out your filter on a routine basis is going to be a smart choice.

Candles are a great way to add ambience but they can also be prohibitively expensive. This is because of two primary factors: the soot that inevitably builds up inside of your home, as well as the smoke produced by candles.

scented candles can affect air quality. remember to change your 4 inch air filter approximately every 3 months.
Scented candles are great for aromatherapy however they can affect indoor air quality. If you enjoy burning candles, be sure to change your furnace filter.

If you want to enjoy lighting candles in your home without having to worry about the quality of your air, there are a few things you can do.

The first is to make sure that you’re changing your air filters on a regular basis – at least every three months, and preferably more often. This will help to prevent soot and smoke from building up and clogging your filters, as well as improve the overall quality of the air in your home.

Another thing you can do is to invest in some good quality candles. There are a number of brands that produce candles without any soot or smoke, which will help to keep the air in your home clean and fresh.

By following these tips, you can enjoy all the benefits of candles without having to worry about the negative impact they can have on your air quality. So don’t be afraid to light a few candles today!

Which Size Filter is Good for You?

If you’re not sure what size filter is best for your furnace, the safest bet is to start with your manufacturer’s recommendations. Keep in mind that using a filter that’s too thick can impede and restrict air flow, so it’s important to find the right balance.

Depending on the brand or model series of your furnace, they may recommend different filter sizes for optimal airflow. If you need help determining the best size filter for your system, don’t hesitate to contact a trusted HVAC professional. They can help you choose the right one based on your household needs and provide recommendations for higher efficiency filters if that’s what you’re after.

Did you enjoy today’s article? Check out James article on HEPA filters.

Co-Founder Total Aire Care

Gurveer Sangha

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