A washable electrostatic filter works best when dust and residue are removed regularly. This guide explains how to clean a Carter Goods electrostatic HVAC filter without leaving soap film on the media.
How often should you clean it?
Inspect your filter every month and clean it about every 4-6 weeks. Clean it sooner if your home has pets, smoke, remodeling dust, heavy HVAC use, or unusually dusty conditions. Always follow the instructions supplied by your filter manufacturer.
What you need
- Clean running water
- A hose or sink sprayer using gentle pressure
- Electrostatic Air Filter Cleaner for stubborn film or stains
- A clean place where the filter can air-dry completely
Step-by-step cleaning instructions
- Turn off the HVAC system. Remove the filter carefully and note the airflow arrow so you can reinstall it in the same direction.
- Rinse opposite the airflow direction. Use gentle water pressure to push trapped dust back out of the filter media.
- Rinse the other side. Continue until the water runs clear. Do not use a pressure washer or scrub the filter media.
- Treat stubborn residue. Spray on Carter Goods Electrostatic Air Filter Cleaner as directed on its label, then rinse thoroughly. Avoid household soap or detergent on a Carter filter because residue can reduce electrostatic performance.
- Air-dry completely. Drain excess water and let the filter dry fully before reinstalling it. Never return a damp filter to the HVAC system.
- Reinstall correctly. Put the filter back with its airflow arrow pointing in the same direction as before, then restart the system.
When should you replace the filter?
Replace a filter if the frame is bent, the media is torn, the layers are separating, or airflow remains restricted after cleaning. If the filter is intact, routine washing helps it continue collecting dust without the repeated cost of disposable filters.
Need a washable replacement?
The Carter Gold MERV 8 washable electrostatic filter is available in common HVAC sizes plus an exact custom-size option. Standard sizes use the nominal dimensions printed on a typical disposable filter and are usually about 3/8 inch smaller in length and width.