Maintaining Your Ductless Mini-Split: Complete Guide

Ductless mini-splits are often promoted as low-maintenance, but they still need regular care.

Monthly Maintenance

Clean or Replace Filters Indoor unit filters need attention every 2-4 weeks during heavy use.

**Process:** 1. Turn off the unit 2. Open the front panel 3. Remove the filters 4. Wash with mild soap and water or vacuum 5. Let dry completely before reinstalling

Wipe Down the Unit Dust the exterior of indoor units to prevent buildup from entering the system.

Quarterly Maintenance

Clean the Indoor Coil With the unit off: 1. Open the panel fully 2. Use a soft brush to remove dust from visible coil surfaces 3. Use coil cleaner spray for deeper cleaning 4. Wipe clean

Check the Condensate Drain Ensure water is draining properly. Pour a cup of diluted vinegar through the drain line.

Annual Professional Maintenance

What Technicians Check - Refrigerant levels and pressures - Electrical connections - Outdoor coil cleaning - Blower wheel cleaning - Overall system performance

Why It Matters Professional maintenance catches: - Refrigerant leaks - Electrical issues - Worn components - Efficiency losses

Outdoor Unit Care

Keep It Clear Maintain 2 feet of clearance around the outdoor unit.

Rinse Periodically Gently spray the outdoor coil with a garden hose to remove debris.

Winter Protection In areas with snow, ensure the unit isn't buried or blocked.

Warning Signs

Schedule service if you notice: - Reduced heating or cooling - Ice formation - Strange smells - Unusual sounds - Higher energy bills