Performance Data Sheet

ManualsBrandsA.O. Smith ManualsUnder Sink Filtration SystemsMain Faucet Filter Single-stage Carbon Block Under Sink Water Filtration System

Do not use with water that is microbiologically unsafe or of unknown water quality without adequate disinfection before

or after the system. Systems certiﬁ ed for cyst reduction may be used on disinfected waters that may contain ﬁ lterable cysts.

Performance Data Sheet for the A. O. Smith Main Faucet Water Filter

Models Replacement Operating pressure range Rated capacity Operating temp. range Rated ﬂ ow

AO-MF AO-MF-R

10-125 psi

68.95-861.8 kPa

1,389 gallons

5,258 liters

40-90º F

4.44 - 32.22º C

1.4 gpm

5.3 lpm

Manufactured by: A. O. Smith Corporation P.O. Box 1597 | Johnson City, TN 37605-1597 | 877.333.7108

NSF/ANSI 42 Min Reduction Overall % Reduction Results

Chlorine Reduction, Free Available 97.5% 97.5% Pass

Particulate Reduction 87.1% 95.9% Pass

NSF/ANSI 53 Min Reduction Overall % Reduction Results

Cyst Live Cryptosporidium & Giardia >99.99% >99.99% Pass

Lead Reduction pH 6.5 > 99.3% > 99.3% Pass

Lead Reduction pH 8.5 > 99.3% > 99.3% Pass

Atrazine 89.1% 93.7% Pass

Lindane 97.4% 98.8% Pass

Turbidity 97.3% 98.7% Pass

• All contaminants reduced

by this ﬁ lter are listed.

• Not all contaminants listed

may be present in your water.

• Does not remove all contaminants

that may be present in tap water.

Testing Performed under NSF/ANSI Standards 42 and 53 and in accordance with the California Department of Health Services Drinking

Water Treatment Device Program. This system has been tested according to NSF/ANSI 42 and 53 for reduction of the substances listed

below. The concentration of the indicated substances in water entering the system was reduced to a concentration less than or equal to

the permissible limit for water leaving the system, as speciﬁ ed in NSF/ANSI 42 and 53.

Filter is only to be used

with COLD water.

Filter usage must comply

with all state and local laws.

Testing was performed under

standard laboratory conditions,

actual performance may vary.

Systems certi ed for cyst reduction may be

used on disinfected waters that may contain

 lterable cysts.

Read owner’s manual for general installation

conditions and needs, as well as manufacturer’s

limited warranty.

PERFORMANCE DATA SHEET

System Tested and Certiﬁ ed by IAPMO R&T lab and IAPMO R&T against NSF/ANSI Standards

42 & 53. Please refer to the Performance Data Sheet for speciﬁ c contaminant reductions.