How to Change an HVAC Air Filter

Some homeowners may be confused about whether their HVAC system uses different filters for heating and cooling. The fact is, while the process to provide either heated or cooled air may differ, the air filter to do both is one and the same in your system. So, have you ever had to change an air filter?

The most important thing to remember is the air filter must be changed regularly to ensure air flow within the system remains at the optimal level. A clean air filter also helps to eliminate dust and allergens from being blown throughout your home, keeping your indoor air as healthy and pure as possible. 

When you schedule regular system maintenance twice yearly with Armstrong, Plumbing, Air & Electric before either cooling or heating your home, the trained technician will change your air filter as part of the comprehensive system maintenance process we offer to our valued clients. 

However, if you live in an area that tends to be windy and dusty, like Lubbock, then your air filters should be changed more frequently. The exact interval depends on the quality of the filters you use. Factors such as the number of pets you have and whether any of the home’s occupants have allergies should also be considered. If dust, multiple pets and allergies are concerns, then filters should be changed about every 3 months. 

Changing the air filter is not difficult. Most homeowners can accomplish this task on their own by following these steps:

1. The first step is to locate your HVAC owner’s manual to learn the type and size air filter that is recommended for your unit. Following the manufacturer’s instructions is important to keep warranties valid. Once you know what you need, purchase the filter. 
2. Before attempting to change the filter, turn the power off to your HVAC unit.
3. If you are unsure about where the filter is located, look for where the air intake is. The filter will be there. 
4. Once you access the filter, if you have not purchased a replacement yet, use the identifying information on the current filter to secure a new one.
5. So, when you have the new filter in hand, again, make sure the unit is off.
6. Remove the access panel and remove the dirty filter.
7. Insert the new filter, making sure the arrows on the filter are pointing the same direction as the airflow.
8. Replace the access panel and turn the power back on to the unit.

While not difficult, changing air filters does take some time and care to ensure the process is carried out correctly and safely.

Armstrong Plumbing, Air & Electric is happy to help with air filters or any HVAC repair or replacement. Call Armstrong today to schedule an appointment.