ComfortStar CAC & CARAT 18K Ductless Filter Replacement Kits

This filter bundle is designed specifically for ComfortStar’s CAC and CARAT 18K wall-mounted indoor units. Regularly replacing your filters helps maintain optimal airflow, system performance, and cleaner indoor air throughout your home or office.

This kit is guaranteed to fit the following ComfortStar indoor unit models:

• CARAT18CD(I)-M
• CAC18CD(I) (20D)
• CAC18CD(I)-WI (291)

Large Washable Screen Filter Dimensions: 14-11/16" x 12-15/16"

Maintenance & Care

Use a soft-bristle vacuum attachment to clean the screen filters every two weeks. In homes with pets, smoke, or high dust levels, gently wash filters with warm, soapy water as needed. Always allow filters to dry fully in the shade before reinstalling.

⚠️ Reminder: Never operate your mini split without the filters installed. A spare set ensures continued operation while cleaned filters dry.

Replacement Guidance

Even washable filters wear down over time. For best performance and air quality, replace every 12 to 24 months, depending on your environment.

Optional Activated Carbon Freshness Filter

This bundle includes an optional freshness filter designed to fit directly inside the screen filter. Its activated carbon layer absorbs odors and airborne pollutants, making it a simple but powerful upgrade to your system’s air quality performance.

Filter Dimensions: 8.4" x 2"

Maintenance & Care: Do not wash. Vacuum gently every two weeks. Replace every 6 months for continued effectiveness.