How to Clean Your AC Filter

Woman holding up dirty air filter

When was the last time you looked at your air conditioner filter? As standard practice, you should check it each month and take the appropriate steps when it looks dirty. Learn more about the different types of AC filters, why they need regular maintenance and step-by-step instructions on how to clean reusable filters properly.

Why Should You Clean or Replace Your AC Filter? 4 Key Reasons

It’s a common chore to overlook, but rinsing or replacing your AC filter is crucial for a few reasons:

1. Saving Money

A new filter lowers extra expenses by tightening up your energy bills, limiting damage and minimizing the risk of premature replacement costs.

2. Use Energy More Efficiently

If you never clean or replace your filter, the dust and debris clogging it forces the AC to exert even more energy. A fresh filter preserves airflow, reducing the unit’s workload and putting a stop to an increase in your energy bills.

3. Better Indoor Air Quality

A fresh filter captures dust, pollen, pet dander and other pollutants, keeping your indoor air fresher and contamination free. This plus is especially vital for people with allergies, asthma or other respiratory conditions.

4. Longer Life Span

Regularly maintaining the filter prevents the system from overheating, lowers wear and tear, and can even prolong your unit’s life span!

A Step-by-Step Guide to Cleaning the AC Filter

Before you go grab the filter, it’s important to note first that disposable filters should not be washed. They should always be swapped out after they become too clogged up with debris. The replacement filter should be the same size to confirm compatibility with your AC unit.

Use these instructions every one to three months to continue enjoying all the benefits of a clean air filter:

  1. Prepare: As the first step, power down the AC unit to prevent electrical fire or similar hazards. Then, access your AC filter. It is usually in the return air duct, in the air handler cabinet or inside of the unit itself.
  1. Remove the filter: Carefully pull out the filter from the housing. Look it over for holes or tears. If the filter is torn, go ahead and replace it.
  1. Vacuum the filter: Get the brush attachment on your vacuum cleaner to get rid of dirt, hair, fibers and other particles.
  1. Wash the filter: Take the filter outdoors and spray it down with a garden hose. For a filter that’s as clean as possible, apply a mild detergent.
  1. Dry the filter: Place the filter out to dry on its own completely before reinstalling it. Before that happens, remember to not use your air conditioner or you risk allowing more dust particles right back into the system.

Other Helpful Info About AC Filters and Maintenance

Types of AC Filters

Your filter type affects indoor air quality, airflow efficiency and whether you should clean or swap it out when it becomes worn down or clogged. Here’s a breakdown of some of the most common models:

Disposable filters are typically made with fiberglass along with a paper frame. These filters are designed for short-term use and are best replaced every 30 to 90 days. They are usually inexpensive and simple to swap out but not as environmentally friendly because they are eventually thrown away.

Reusable filters have stronger frame materials like aluminum or plastic. These filters can be cleaned and reused multiple times, and can last several years if cared for correctly. They are more eco-friendly and budget friendly over their life span. On the other hand, washing them takes more time and effort than simply replacing a disposable model.

Electrostatic filters employ static electricity to trap particles effectively while preserving airflow. These can be designed to either be disposable or reusable. Reusable electrostatic filters need regular washing to preserve their effectiveness.

HEPA filters, or high-efficiency particulate air filters, are the best filters around, capturing 99.97% of airborne particles as small as 0.3 microns. The majority of HEPA filters are disposable, but they can be used for up to 12 months before needing to be replaced. While they provide exceptional filtration, they are costlier and aren’t always compatible with all HVAC systems.

Other Parts of an Air Conditioning System to Maintain

Besides the filter, additional AC parts require routine upkeep for optimal performance and longevity. Call an HVAC contractor for help cleaning parts like:

  • The fan blades in your AC system will also collect dust and dirt. An HVAC technician will check the fan as part of their yearly tune-up, washing and tightening the blades as needed to restore normal operation.
  • The condenser coils within the outdoor system release heat taken out of your house. These coils are subjected to the elements and become dirty fast. Even though you can carefully wash away dirt, leaves and other debris with a garden hose, leave more detailed seasonal cleanings to a professional.
  • The evaporator coils within the air handler absorb heat from the air. After enough time, these coils collect a lot of dust, which reduces heat transfer efficiency. HVAC Experts apply a commercial-grade coil cleaner to remove dust and grime.
  • The condensate drain lines in your AC system can get clogged up with algae, mold and debris. When drainage slows or stops, call a qualified technician to clean the drain line using a professional-grade cleaner or algaecide.

Receive AC Maintenance Support

Consistently servicing your AC filter and the rest of your air conditioner promotes smooth operation and higher indoor air quality. Sure Temp Air Conditioning is available to offer our support. Our certified technicians offer fast, long-lasting solutions to all your HVAC headaches. To schedule your next AC maintenance appointment, please contact us today.