How to change a condo HVAC filter in three steps.
A practical starting point for fan coils and heat pumps. Access panels and filter racks vary, so keep your equipment instructions and building’s maintenance rules close by.
Find your unit. Make it safe.
Look for the labelled filter access panel on your fan coil or heat pump. It may be inside a wall cabinet, closet or ceiling bulkhead. Your thermostat controls it but does not tell you the filter size.
Turn the system off and isolate its power as directed in the equipment manual before opening access. Wait for the fan to stop. A thermostat set to “off” is not electrical isolation. Do not remove electrical covers or touch wiring, piping or coil fins.
Read the label. Match the fit.
Open only the designated filter access panel. Note the old filter’s position and airflow direction, then remove it as instructed. Read its size and rating, and measure the outside width, height and depth.
Match the replacement to the equipment’s approved size, type and rating. Wireframe, MERV 8 and MERV 11 are choices only where the unit permits them. Keep HRV/ERV pads separate. If a measurement or media type is unclear, pause and ask for help.
Replace. Close. Restart.
Fit the new filter securely into its designated rack. If there is an airflow arrow, align it with the unit’s airflow marking or manual—not simply toward the room. Do not force it, leave bypass gaps or stack filters.
Secure the access panel before restoring power and normal operation. Note the replacement date, and follow the manufacturer’s inspection schedule. If the panel will not close, airflow seems abnormal, or you hear a new noise, switch off and ask for assistance.
This is general filter guidance, not a model-specific service procedure. EPA recommends matching filter efficiency to system capability and following manufacturer replacement instructions.
Now find your replacement.
Search by the dimensions on your filter or use your building address as a starting point.
Find my filter →