Measure the filter compartment's height, width, and depth with a tape measure. Round these up to the nearest whole inch to find the nominal size. 2. Choose the Right Filter Type & Efficiency
If the filter is missing or unreadable, check your indoor unit’s manual for the required dimensions. buy carrier ac filters
Carrier units can accommodate various filter materials, each with a different rating. Higher MERV ratings indicate better particle capture. Filter Type Typical MERV Replacement Cycle Fiberglass Basic protection; budget-friendly. Pleated General home use; traps dust, dander, and pollen. 3–6 months High-Efficiency Best for allergies; captures fine particles and bacteria. Up to 1 year Measure the filter compartment's height, width, and depth