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Remove the plastic wrap, but not the cardboard frame, before installing the furnace/air handler filter in the filter slot or above the return grate; note, the metal wire over the filter fabric can be very sharp.

Remove the plastic wrap, but not the cardboard frame, before installing the furnace/air handler filter in the filter slot or above the return grate; note, the metal wire over the filter fabric can be very sharp.
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Replace HVAC air filters regularly to protect the equipment and maintain system efficiency

Replace HVAC air filters regularly to protect the equipment and maintain system efficiency
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Revival Homes built this affordable home in the cold climate in Litchfield, CT, and certified it to DOE Zero Energy Ready Home specifications in 2016.

Revival Homes built this affordable home in the cold climate in Litchfield, CT, and certified it to DOE Zero Energy Ready Home specifications in 2016.
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Revive Properties and Philgreen Construction built this multifamily home in the cold climate in Fort Collins, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Revive Properties and Philgreen Construction built this multifamily home in the cold climate in Fort Collins, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Revive Properties and Philgreen Construction built this production home in the cold climate in Fort Collins, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.

Revive Properties and Philgreen Construction built this production home in the cold climate in Fort Collins, CO, and certified it to DOE Zero Energy Ready Home specifications in 2018.
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Right - Ducts and heat pump cabinet are properly sealed with mastic, high MERV filter is installed, and duct and refrigerant lines are air sealed at ceiling.

Right - Ducts and heat pump cabinet are properly sealed with mastic, high MERV filter is installed, and duct and refrigerant lines are air sealed at ceiling.
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Right - This water softener filters hard water through a mineral-collecting medium before delivering water to the main plumbing system.

Right - This water softener filters hard water through a mineral-collecting medium before delivering water to the main plumbing system.
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Right – An HVAC contractor installs a 4-inch-thick MERV 13 filter at the intake grille of this return air vent to prevent dust, allergens, smoke, and viruses from entering the duct system.

Right – An HVAC contractor installs a 4-inch-thick MERV 13 filter at the intake grille of this return air vent to prevent dust, allergens, smoke, and viruses from entering the duct system.
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Right – HVAC furnace filter is properly installed in cabinet with gasketed cover to prevent air leakage

Right – HVAC furnace filter is properly installed in cabinet with gasketed cover to prevent air leakage
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S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Pilot Mountain, NC, and certified it to DOE Zero Energy Ready Home specifications in 2021.

S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Pilot Mountain, NC, and certified it to DOE Zero Energy Ready Home specifications in 2021.
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S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Pinnacle, NC, and certified it to DOE Zero Energy Ready Home specifications in 2019.

S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Pinnacle, NC, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Tobaccoville, NC, and certified it to DOE Zero Energy Ready Home specifications in 2017.

S.D. Jessup Construction built this custom for buyer home in the mixed-humid climate in Tobaccoville, NC, and certified it to DOE Zero Energy Ready Home specifications in 2017.
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S.D. Jessup Construction, Inc. built this custom for buyer home in the mixed-humid climate in Pinnacle, NC, and certified it to DOE Zero Energy Ready Home specifications in 2020.

S.D. Jessup Construction, Inc. built this custom for buyer home in the mixed-humid climate in Pinnacle, NC, and certified it to DOE Zero Energy Ready Home specifications in 2020.
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Sareth Builders built this custom spec home in the cold climate in Lorain, OH, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Sareth Builders built this custom spec home in the cold climate in Lorain, OH, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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Sareth Builders built this custom spec home in the cold climate in Lorain, OH, and certified it to DOE Zero Energy Ready Home specifications in 2019.

Sareth Builders built this custom spec home in the cold climate in Lorain, OH, and certified it to DOE Zero Energy Ready Home specifications in 2019.
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See the printing on the cardboard frame of the air filter for the filter dimensions and the arrow indicating airflow direction; the arrow should point into the duct.

See the printing on the cardboard frame of the air filter for the filter dimensions and the arrow indicating airflow direction; the arrow should point into the duct.
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Simple Integrity built this custom for buyer home in the cold climate in Cooperstown, NY, and certified it to DOE Zero Energy Ready Home specifications in 2020.

Simple Integrity built this custom for buyer home in the cold climate in Cooperstown, NY, and certified it to DOE Zero Energy Ready Home specifications in 2020.
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Size the filter box for the appropriate filter

Size the filter box for the appropriate filter
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Size the filter box for the appropriate filter, according to ACCA Manual D, taking into account pressure drop across the system.

Size the filter box for the appropriate filter, according to ACCA Manual D, taking into account pressure drop across the system.
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Southeast Volusia Habitat for Humanity built this affordable home in the hot-humid climate in Edgewater, FL, and certified it to DOE Zero Energy Ready Home specifications in 2014.

Southeast Volusia Habitat for Humanity built this affordable home in the hot-humid climate in Edgewater, FL, and certified it to DOE Zero Energy Ready Home specifications in 2014.
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Southern Energy Homes built this affordable home in the mixed-humid climate in Russellville, AL, and certified it to DOE Zero Energy Ready Home specifications in 2014.

Southern Energy Homes built this affordable home in the mixed-humid climate in Russellville, AL, and certified it to DOE Zero Energy Ready Home specifications in 2014.
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Sterling Brook Homes built this custom home in the hot-humid climate in Double Oak, TX, and certified it to DOE Zero Energy Ready Home specifications in 2014.

Sterling Brook Homes built this custom home in the hot-humid climate in Double Oak, TX, and certified it to DOE Zero Energy Ready Home specifications in 2014.
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Streetscape Development built this custom home in the cold climate in Libertyville, IL, and certified it to DOE Zero Energy Ready Home specifications in 2013.

Streetscape Development built this custom home in the cold climate in Libertyville, IL, and certified it to DOE Zero Energy Ready Home specifications in 2013.
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Sunroc Builders built this affordable home in the hot-humid climate in Lakeland, FL, and certified it to DOE Zero Energy Ready Home specifications in 2016.

Sunroc Builders built this affordable home in the hot-humid climate in Lakeland, FL, and certified it to DOE Zero Energy Ready Home specifications in 2016.