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$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 6" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 6" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$218.49
2026 Upgraded HVAC Scent Diffuser Machine 1000ML, Scent Air Machine With Wifi For Home, Hotel Diffuser Coverage 6000 Sq.Ft, Waterless Cold Air
Amazon.com
Free shipping
$218.49
2026 Upgraded HVAC Scent Diffuser Machine 1000ML, Scent Air Machine With Wifi For Home, Hotel Diffuser Coverage 6000 Sq.Ft, Waterless Cold Air
Amazon.com
Free shipping
$38.50
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
Free shipping
16% off
$38.50
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
Free shipping
$74.99
BUILDMART - 24" Linear Slot Diffuser - (2 Slot) Double Slot - White Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas
Amazon.com
Free shipping
$74.99
BUILDMART - 24" Linear Slot Diffuser - (2 Slot) Double Slot - White Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas
Amazon.com
Free shipping
$13.53
EZ-FLO 8 X 4 Inch Three-Way Ventilation Steel Sidewall/Ceiling Register, Steel Duct Opening, 61658
Amazon.com
$13.53
EZ-FLO 8 X 4 Inch Three-Way Ventilation Steel Sidewall/Ceiling Register, Steel Duct Opening, 61658
Amazon.com
$421.06
Io HVAC Controls VD-06 Vd-06 24" X 24", 6" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-06 | Supplyhouse.Com
SupplyHouse.com
$421.06
Io HVAC Controls VD-06 Vd-06 24" X 24", 6" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-06 | Supplyhouse.Com
SupplyHouse.com
$213.74
Morrison Bros. 4 in. Closed Telescopic Diffuser - 539TC-0400 AD
John M. Ellsworth Co., Inc.
$213.74
Morrison Bros. 4 in. Closed Telescopic Diffuser - 539TC-0400 AD
John M. Ellsworth Co., Inc.
$46.34
Airtec By Truaire MV4
hvq
$46.34
Airtec By Truaire MV4
hvq
$621.44
07178202 (D1610) DOWNFLOW UNIT HTR. RADIAL LOUVERED CONE DIFFUSER 25-50KW MODELS
Kelly & Hayes Electrical Supply
$621.44
07178202 (D1610) DOWNFLOW UNIT HTR. RADIAL LOUVERED CONE DIFFUSER 25-50KW MODELS
Kelly & Hayes Electrical Supply
$46.34
Airtec By Truaire MV360
hvq
$46.34
Airtec By Truaire MV360
hvq
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$20.46
Airtec By Truaire MH
hvq
$20.46
Airtec By Truaire MH
hvq
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com
$47.99
$54.99
BUILDMART - 14X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
12% off
$47.99
$54.99
BUILDMART - 14X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$482.56
Tpi Corporation D1602 Downflow Unit Htr. Linear Louvered Diffuser 5-20Kw Models, 07177902
Lite Store USA
$482.56
Tpi Corporation D1602 Downflow Unit Htr. Linear Louvered Diffuser 5-20Kw Models, 07177902
Lite Store USA
$20.38
IMPERIAL 6.0-In X 6.0-In 2-Way ABS Resin Sidewall/Ceiling Diffuser In White One_Size | DR-06-C
Lowe's
$20.38
IMPERIAL 6.0-In X 6.0-In 2-Way ABS Resin Sidewall/Ceiling Diffuser In White One_Size | DR-06-C
Lowe's
$749.95
F-Matic Breza Iron Powder Coated Diffuser White 110V W/HVAC
Worldwide Janitor
$749.95
F-Matic Breza Iron Powder Coated Diffuser White 110V W/HVAC
Worldwide Janitor
$40.98
RELIABILT 6-In X 6-In 3-Way Aluminum Sidewall/Ceiling Diffuser In White One_Size | 5830606WH
Lowe's
$40.98
RELIABILT 6-In X 6-In 3-Way Aluminum Sidewall/Ceiling Diffuser In White One_Size | 5830606WH
Lowe's
$34.17
Airtec By Truaire GRD4
hvq
$34.17
Airtec By Truaire GRD4
hvq
$62.99
Dial 3-1/2 in. H X 22 in. W 6-Way White Plastic Air Diffuser Grille
Ace Hardware
$62.99
Dial 3-1/2 in. H X 22 in. W 6-Way White Plastic Air Diffuser Grille
Ace Hardware
$82.48
180 ML Upgrade HVAC Scent Diffuser Smart Scent Air Machine With Cold Air Technology Oil Diffuser Cover Up To 2000 Sq.Ft.
Home Depot
Free shipping
$82.48
180 ML Upgrade HVAC Scent Diffuser Smart Scent Air Machine With Cold Air Technology Oil Diffuser Cover Up To 2000 Sq.Ft.
Home Depot
Free shipping
$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
20% off
$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$1,228.95
F-Matic Versa Aluminum Diffuser HVAC System Black 110V W/HVAC
Worldwide Janitor
$1,228.95
F-Matic Versa Aluminum Diffuser HVAC System Black 110V W/HVAC
Worldwide Janitor
$59.99
$79.99
BUILDMART - 24 White Inch Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Linear Air - Modern Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
25% off
$59.99
$79.99
BUILDMART - 24 White Inch Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Linear Air - Modern Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$28.98
24 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
787
Free shipping
$28.98
24 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
787
$27.98
18 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
Free shipping
$27.98
18 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
Free shipping
$749.95
F-Matic Breza Iron Powder Coated Diffuser Black 110V W/HVAC
Worldwide Janitor
$749.95
F-Matic Breza Iron Powder Coated Diffuser Black 110V W/HVAC
Worldwide Janitor
$99.99
$119.99
BUILDMART - 48 White Inch Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Linear Air - Modern Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
16% off
$99.99
$119.99
BUILDMART - 48 White Inch Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Linear Air - Modern Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$71.95
Plastic Air Diffusers 2'X2' Black Plastic Cone Style Air Diffuser 2'X2' W/12" Collar American Louver
1800ceiling.com
$71.95
Plastic Air Diffusers 2'X2' Black Plastic Cone Style Air Diffuser 2'X2' W/12" Collar American Louver
1800ceiling.com
$24.68
15 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
959
Free shipping
$24.68
15 in. 3-Way Steel Baseboard Diffuser Supply In White
Home Depot
959
$141.10
$176.30
DPA - Steel Perforated Face Diffuser With Insulation 6" / White / Aluminum
Advantage Mechanical Supply
19% off
$141.10
$176.30
DPA - Steel Perforated Face Diffuser With Insulation 6" / White / Aluminum
Advantage Mechanical Supply
How to Install a Ventilation Diffuser - Diffuser Installation - PlumbersStock.com
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https://www.plumbersstock.com/category/528/diffusers/ In this video, Phillip Green of PlumbersStock.com demonstrates the correct method for installing a register onto a length of cylindrical ductwork. Installing your registers correctly will help your furnace run more efficiently by preventing unecasary pressure loss. Correct installation will ...
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Shop hvac diffusers

Sponsored
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$18.90
HBW 10" X 8" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size Is For Duct Opening Or Inside
Amazon.com
$18.90
HBW 10" X 8" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size Is For Duct Opening Or Inside
Amazon.com
$119.99
Baseboard Register Diffuser Vent Covers: 12 Pcs 18 Inch Baseboard Diffuser Replacement (Duct Opening Size) - Smooth Air Adjust Lever & Easy Install
Amazon.com
Free shipping
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Baseboard Register Diffuser Vent Covers: 12 Pcs 18 Inch Baseboard Diffuser Replacement (Duct Opening Size) - Smooth Air Adjust Lever & Easy Install
Amazon.com
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Three-Way Plastic Side Wall/Ceiling Register In White 12" W X 6" H For Duct Opening (Outside Dimension Is 13.75" W X 8" H)
Amazon.com
$15.95
Three-Way Plastic Side Wall/Ceiling Register In White 12" W X 6" H For Duct Opening (Outside Dimension Is 13.75" W X 8" H)
Amazon.com
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$20.46
Airtec By Truaire MH
hvq
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Airtec By Truaire MH
hvq
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com
$46.27
Bluefin DF2W12-12 12" X 12" (Wall Opening Size) 4-Way Aluminum Square Ceiling Diffuser (White) | Supplyhouse.Com
SupplyHouse.com
$46.27
Bluefin DF2W12-12 12" X 12" (Wall Opening Size) 4-Way Aluminum Square Ceiling Diffuser (White) | Supplyhouse.Com
SupplyHouse.com
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Fits 20X10 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] For 1-Inch Filters | Vent Cover Grill | White | HVAC Cold Air
Amazon.com
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Fits 20X10 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] For 1-Inch Filters | Vent Cover Grill | White | HVAC Cold Air
Amazon.com
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$54.99
BUILDMART - 14X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
12% off
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BUILDMART - 14X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
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Tpi Corporation D1602 Downflow Unit Htr. Linear Louvered Diffuser 5-20Kw Models, 07177902
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IMPERIAL 6.0-In X 6.0-In 2-Way ABS Resin Sidewall/Ceiling Diffuser In White One_Size | DR-06-C
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F-Matic Breza Iron Powder Coated Diffuser White 110V W/HVAC
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Shop hvac diffusers

Sponsored
About our ads
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
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Havaco 2'X2' Lay-In 3 Cone Supply With 6" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
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Havaco 2'X2' Lay-In 3 Cone Supply With 6" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
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2026 Upgraded HVAC Scent Diffuser Machine 1000ML, Scent Air Machine With Wifi For Home, Hotel Diffuser Coverage 6000 Sq.Ft, Waterless Cold Air
Amazon.com
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2026 Upgraded HVAC Scent Diffuser Machine 1000ML, Scent Air Machine With Wifi For Home, Hotel Diffuser Coverage 6000 Sq.Ft, Waterless Cold Air
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Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
Free shipping
16% off
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Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
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Amazon.com
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Io HVAC Controls VD-06 Vd-06 24" X 24", 6" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-06 | Supplyhouse.Com
SupplyHouse.com
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Io HVAC Controls VD-06 Vd-06 24" X 24", 6" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-06 | Supplyhouse.Com
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Morrison Bros. 4 in. Closed Telescopic Diffuser - 539TC-0400 AD
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John M. Ellsworth Co., Inc.
$46.34
Airtec By Truaire MV4
hvq
$46.34
Airtec By Truaire MV4
hvq
$621.44
07178202 (D1610) DOWNFLOW UNIT HTR. RADIAL LOUVERED CONE DIFFUSER 25-50KW MODELS
Kelly & Hayes Electrical Supply
$621.44
07178202 (D1610) DOWNFLOW UNIT HTR. RADIAL LOUVERED CONE DIFFUSER 25-50KW MODELS
Kelly & Hayes Electrical Supply
$46.34
Airtec By Truaire MV360
hvq
$46.34
Airtec By Truaire MV360
hvq
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$532.48
Tpi Corporation D1600 Downflow Unit Htr. Radial Louvered Cone Diffuser 5-20Kw Models, 07178102
Lite Store USA
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$35.00
F-9032: 12" Mushroom With Lip Round Ceiling Diffuser | Opening: 9-3/8" | Height: 4-1/4"
Fluorolite Plastics
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$77.99
Hart & Cooley 50500 4-Way Steel Ceiling Diffuser W/ 6" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.80
Hart & Cooley 50504 4-Way Steel Ceiling Diffuser W/ 10" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$99.78
Hart & Cooley 50502 4-Way Steel Ceiling Diffuser W/ 8" Collar (FPD Series) | Supplyhouse.Com
SupplyHouse.com
$20.46
Airtec By Truaire MH
hvq
$20.46
Airtec By Truaire MH
hvq
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com
$221.85
Hart & Cooley 610664 12" X 12" Aluminum Adjustable Modular Core Diffuser W/ 10" Round Duct (MCDSTSR Series) | Supplyhouse.Com
SupplyHouse.com