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Aquafresh WF279 Replacement for Bosch 644845 Ultra Clarity, Haier 0060820860, Miele KWF1000 Refrigerator Water Filter

Size Guide

  • EASY TO INSTALL: No tools required: perfectly fits the original without water leakage.
  • AFFORDABLE OPTION: Costs less than OEM filters without compromising any quality or flow rate
  • CERTIFIED QUALITY: All Aquafresh Filters are tested and certified by IAPMO to NSF Standard 42 for Structural Integrity, Materials Safety, Chlorine taste, odor reduction and System performance. Quality you can taste!
  • HIGH-EFFICIENCY FILTRATION: Activated carbon blocks certified to ensure contaminant reduction for 500 Gallons Or 6 Months, depending On Water Usage And Quality
  • FITS: Bosch 644845, UltraClarity, Haier RF-2800-13, RF-2800-15, Haier 0060820860, Miele KWF1000. Also Replaces EFF-6025A, Tier1 RWF1180, Icepure RWF3100A. (See product description below for complete list of compatible models)

The Aqua Fresh WF279 Replacement Water Filter for Bosch 644845 / Haier 0060218743 is a superior water filter that gives clean drinking water and ice. Normal tap water contains many harmful chemicals that are the main reason for various health issues. The filter provides protection against such impurities, giving you and your family perfect water with every glass. The filter eliminates chlorine, taste, and odor from water and gives you clean water before you receive it from the refrigerator. It also retains minerals like fluorine keeping the water healthy.


  • Locate the existing filter and remove it by turning it counter-clockwise.
  • Pull the filter straight out.
  • Remove the reusable knob/cap from the end of the old filter.
  • Discard the old filter.
  • Snap the knob/capon to the end of the new filter.
  • Twist the filter a quarter turn clockwise.
  • Run water from the dispenser for 5 minutes (approximately 3 gallons) to clear the system and prevent air from entering the system Check the filter for any leaks. Inspect the mount area and filter bottom for any signs of moisture.

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Nominal Vs. Actual Sizes: Finding the Right Air Filter Size

Buying the Correct Size Air Filter- The Most Important Thing to Know 

When you are buying your air filter online most important thing to know is Air Filters have two sizes that you need to understand the Nominal size and the Actual Size. Not understanding these numbers often leads to consumers purchasing a filter that does not fit their Furnace or HVAC system. See the complete list of Air Filters by Size Rating and Brand.

Nominal vs Actual air filter size by Atomic


Understanding Nominal Filters Size Could Save You Time and Money

Not understanding the Nominal Filter Size is the primary culprit for incorrectly purchased filters.The Nominal Size is the usually the dimensions used to Label the filter. For instance 16x20x1. These dimensions are a rounded value on the filters actual measurements. The actual measurements on this filter may be 15.5x19.5x.75, but that could vary by brand and manufacturer. So in order to make sure you have the correct size filter, especially if you are replacing with a different brand it is important to confirm the actual size on the filter. When purchasing filters on the internet the Nominal size is usually found in the product title.

Actual Filter Size- The Key to Making the Right Replacement Filter Purchase

The actual size as you might have guessed are the actual dimensions of the filter by length, width and thickness. This size is often on the filter right below the Nominal size and is usually labeled as the actual size. When you are buying a filter online the actual size is sometime in the product bullet point or the product description. If your filter does not have actual dimensions on the outside of the filter, you can measure you filter to get the correct dimensions. Some brands have a foam gasket on the outside of the filter, in this case, you will want to make sure you have a compatible actual size and that it also has the foam to ensure a snug fit. 

Lennox Air Filter X0851 with Foam strips

Examples of Nominal and Actual Sizes

 Size  Example 1  Example 2
Nominal Size 20x20x1 16x20x1
Actual Size 19.5x19.5x.75 15.75x19.75x.75


 Furnace filters should fit securely but should not have to be forced into position. If you have to force the filter into its slot, then it is probably too big. Forcing an improper filter size in a filter can cause it to buckle, damaging the filter or reducing its ability to function properly. Filters are a smaller than their slot to allow for easy replacement. Some HVAC units may need a filter with dimensions that are unique or uncommon. In these cases, a custom filter needs to be ordered.

Find Your Filter Sizes Easy in 1" Deep Filters , 2" Deep Filters, 4" Deep Filters