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Ceiling Diffusers

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RELIABILT 24-in x 24-in 3-cone Steel Ceiling Diffuser in White

RELIABILT 

24-in x 24-in 3-cone Steel Ceiling Diffuser in White

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3.5
6
IMPERIAL 6.0-in x 6.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

IMPERIAL 

6.0-in x 6.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

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4.5
22
RELIABILT Step-down Steel Ceiling Diffuser in Whlte
Multiple Sizes Available

RELIABILT 

Step-down Steel Ceiling Diffuser in Whlte

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4.3
70
IMPERIAL 4.0-in x 4.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

IMPERIAL 

4.0-in x 4.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

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4.9
8
ACLaminaire 14-in x 14-in 4-way Aluminum Ceiling Diffuser in White

ACLaminaire 

14-in x 14-in 4-way Aluminum Ceiling Diffuser in White

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ACLaminaire 4-in x 8-in 1-way Aluminum Ceiling Diffuser in White

ACLaminaire 

4-in x 8-in 1-way Aluminum Ceiling Diffuser in White

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RELIABILT 8-in x 8-in Step-down Steel Sidewall/Ceiling Diffuser in Brown

RELIABILT 

8-in x 8-in Step-down Steel Sidewall/Ceiling Diffuser in Brown

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RELIABILT 6-in x 6-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

RELIABILT 

6-in x 6-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

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ACLaminaire 12-in x 12-in 4-way Aluminum Ceiling Diffuser in White

ACLaminaire 

12-in x 12-in 4-way Aluminum Ceiling Diffuser in White

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ACLaminaire 12-in x 12-in 3-way Aluminum Ceiling Diffuser in White

ACLaminaire 

12-in x 12-in 3-way Aluminum Ceiling Diffuser in White

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Accord Ventilation Accord ABCDWH08 Round Ceiling Diffuser 8-Inch White

Accord Ventilation 

Accord ABCDWH08 Round Ceiling Diffuser 8-Inch White

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ACLaminaire 14-in x 14-in 3-way Aluminum Ceiling Diffuser in White

ACLaminaire 

14-in x 14-in 3-way Aluminum Ceiling Diffuser in White

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RELIABILT 4-way Aluminum Sidewall/Ceiling Diffuser in White
Multiple Sizes Available

RELIABILT 

4-way Aluminum Sidewall/Ceiling Diffuser in White

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3.0
1
ACLaminaire 10-in x 10-in 1-way Aluminum Ceiling Diffuser in White

ACLaminaire 

10-in x 10-in 1-way Aluminum Ceiling Diffuser in White

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ACLaminaire 12-in x 12-in 2-way Aluminum Ceiling Diffuser in White

ACLaminaire 

12-in x 12-in 2-way Aluminum Ceiling Diffuser in White

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ACLaminaire 8-in x 8-in 4-way Aluminum Ceiling Diffuser in White

ACLaminaire 

8-in x 8-in 4-way Aluminum Ceiling Diffuser in White

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5.0
1
ACLaminaire 6-in x 10-in 3-way Aluminum Ceiling Diffuser in White

ACLaminaire 

6-in x 10-in 3-way Aluminum Ceiling Diffuser in White

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RELIABILT 8-in x 8-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

RELIABILT 

8-in x 8-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

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ACLaminaire 16-in x 16-in 4-way Aluminum Ceiling Diffuser in White

ACLaminaire 

16-in x 16-in 4-way Aluminum Ceiling Diffuser in White

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ACLaminaire 8-in x 12-in 1-way Aluminum Ceiling Diffuser in White

ACLaminaire 

8-in x 12-in 1-way Aluminum Ceiling Diffuser in White

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RELIABILT 24-in x 24-in 1-way Steel Ceiling Diffuser in White

RELIABILT 

24-in x 24-in 1-way Steel Ceiling Diffuser in White

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ACLaminaire 10-in x 10-in 4-way Aluminum Ceiling Diffuser in White

ACLaminaire 

10-in x 10-in 4-way Aluminum Ceiling Diffuser in White

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QuietCool 5.75-in x 11.75-in 2-way Aluminum Sidewall/Ceiling Diffuser in White

QuietCool 

5.75-in x 11.75-in 2-way Aluminum Sidewall/Ceiling Diffuser in White

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RELIABILT 10-in x 10-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

RELIABILT 

10-in x 10-in 3-way Aluminum Sidewall/Ceiling Diffuser in White

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Related Products

6.0-in x 6.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

IMPERIAL   6.0-in x 6.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

For wall and ceiling applications

4.0-in x 4.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

IMPERIAL   4.0-in x 4.0-in 2-way ABS resin Sidewall/Ceiling Diffuser in White

For wall and ceiling applications.

13-in x 13-in Step-down ABS resin Ceiling Diffuser in White

Elima-Draft   13-in x 13-in Step-down ABS resin Ceiling Diffuser in White

By not covering up your HVAC registers and vents, it's like leaving windows and doors open. Our insulated magnetic covers create a barrier around ceiling and wall registers eliminating heat loss and cold drafts during the winter when your central air conditioner is not in use. If you want to reduce energy costs and feel more comfortable then this product is for you.

Ceiling Diffusers for Home Ventilation


Ceiling diffusers aid your HVAC unit in delivering proper airflow to the room. These ceiling air vents allow for even air distribution so that the space stays appropriately warm or cool to suit your preferences.


Lowe's offers a selection of ceiling air vents that feature durable construction, crafted of sturdy materials like steel. A step-down HVAC diffuser features layered rings that emit air uniformly throughout the room. A three-way diffuser releases air on three sides and works well for ducts installed perpendicular to a wall. For ducts positioned in the center of a room, choose a four-way ceiling diffuser for 360-degree air distribution.


These air vents feature a versatile white finish that blends seamlessly into traditional white ceilings. Paint them as needed for further coordination with your room décor. Shop for round and square diffusers with your ceiling ducts in mind. For more information on home heating and cooling, check out our how-to guide – Ventilate Your Home.

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