# DIY: How to Change Your Furnace Filter

- Link: https://alpscomfortair.com/diy-change-furnace-filter/
- Published: 2018-05-09T16:37:15+00:00
- Author: kathypuig

![](/wp-content/uploads/46562869_s.jpg)

Do you remember when you first started driving, and your parents asked you to check
the car for oil? You probably didn’t know where to start. Just like young drivers,
most first-time homeowners don’t know where to begin when dealing with their home’s
furnace.

You may not know this, but there is a filter inside of your home’s furnace that 
needs to be changed on a regular basis. You also may not be aware of how vital a
clean filter is to the ability of your home’s HVAC system to rid the air of harmful
pollutants.

Fortunately, we have changed a few filters and we know that replacing a furnace 
filter can be easy, if you have some basic knowledge. We want to make sure that 
our customers know how to buy the correct filter for their unit and how to install
it.

The job can be done in three steps:

### **Step 1**

First of all, you need to figure out what type of filter your system uses. Begin
by shutting off the furnace (safety first!). Then remove the existing filter, which
is usually visible inside the furnace or inside the return air vent. Take particular
notice of the arrow on the filter, this is indicative of airflow direction. Use 
a marker to indicate the airflow direction on the outside of the furnace, that way
you will always know the right way to install the filter.

Is your filter made of plastic? Good news! That means it is reusable. Use a vacuum
and water periodically to keep these filters fresh. Once dry, they can be reinserted.

### **Step 2**

Second, purchase the right replacement. Take the old filter with you to the store,
that way you will know exactly what you need. Maybe you prefer to keep it simple?
Take a picture of the label with your phone to show to an associate at the hardware
store.

If you prefer to buy online, make sure to match the type and size of your current
filter before purchasing. If you want to make a major filter change to improve energy
efficiency, your system may have to be modified by an HVAC professional.

### **Step 3**

Finally, it’s time to install the new filter. Use the arrows you made on the outside
of the unit to confirm that your filter is facing the correct direction. Then slide
the filter back into place and replace the cover. Make a note of the replacement
date for future reference.

If you are unsure which filter is right for your home, we can help! [Call us](https://alpscomfortair.com/contact-us/)
to schedule an appointment or [visit our website](https://alpscomfortair.com/) for
more HVAC tips.