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Deal.ai › Compare

Breeze Stop Window AC Insulation Kit vs Duck Brand Foam Window AC Insulating Panels

Buy the Breeze Stop if you want a full three-piece kit that seals the sides and the top gap, with a finished white look and a large base of positive owner feedback. Buy the Duck Brand two-pack if you only need to plug the side gaps and prefer plain black foam. The Breeze Stop covers more of the installation and looks more built-in; the Duck panels are simpler and thinner at 0.88 inch. Owners of both report the foam does its job, but the Breeze Stop's extra top panel and vinyl cover are the real functional gap.

  • Choose the Breeze Stop if you want to seal the top gap above the unit too and want a clean white finished look.
  • Choose the Duck Brand if you only need side-gap filler and want a basic black foam panel.

Prices

  • Breeze Stop Window AC Insulation Kit: $32.99 at BreezeStop (last seen Nov 10)
  • Duck Brand Foam Window AC Insulating Panels: $14.99 at Walmart (last seen Nov 10)
  • Difference: the Duck Brand Foam Window AC Insulating Panels is $18.00 cheaper than the Breeze Stop Window AC Insulation Kit at the latest prices (Nov 10)
Breeze Stop
Breeze Stop Surround Insulation for Window AC Units (Fits up to 36" wide window)

Breeze Stop Window AC Insulation Kit

Breeze Stop Surround Insulation for Window AC Units (Fits up to 36" wide window)

$32.99at BreezeStopChecked Nov 10
See all prices and details
Visit BreezeStop
Pros
  • Covers sides and top in one kit
  • Vinyl cover wipes clean and looks finished
  • Adhesive attaches to the unit, not your wall
  • Removable and reusable
  • Fits any AC brand in windows up to 36 inches wide
Cons
  • Only fits windows up to 36 inches wide
  • Needs trimming to fit
  • White color may not suit every window
Duck Brand
Duck Brand 18 Inch X 9 Inch X 0.88 Inch Black Foam Window Air Conditioner Insulating Panels, 2 Pack

Duck Brand Foam Window AC Insulating Panels

Duck Brand 18 Inch X 9 Inch X 0.88 Inch Black Foam Window Air Conditioner Insulating Panels, 2 Pack

4.5(334 ratings)
$14.99at WalmartChecked Nov 10
See all prices and details
Visit Walmart
Pros
  • Simple two-panel side seal
  • Thin 0.88 inch foam fits tight gaps
  • Well-known weatherproofing brand
  • Useful for blocking dust, insects and pollen
Cons
  • No top panel
  • Bare black foam is visible
  • No vinyl cover, so it can tear or soil
  • R-value listed as 0

What separates them

Breeze Stop Window AC Insulation KitDuck Brand Foam Window AC Insulating Panels
Pieces included3 pieces: 2 side panels plus 1 top panel2 panels, sides only
Top gap coverageTop panel seals the gap above the unitNo top panel
Thickness1 inch foam0.88 inch foam
CoveringInsulating foam wrapped in white flexible vinylBare black foam
LookWhite, built-in finished appearanceBlack foam, visible
AttachmentAdhesive flaps stick to the AC unit, not the wall or frameFoam seals pressed between unit and frame
TrimmingTrim with scissors or utility knifeCut-to-fit foam
Owner feedbackOver 1,400 five-star reviews cited by the brand4.5 out of 5 from 334 ratings

Price history

  • Breeze Stop Window AC Insulation Kit: lowest $32.99 on Nov 10 at Lowe's.

Prices at every store

Breeze Stop Window AC Insulation Kit

  • Home DepotNew

    In stock

    $32.99Free shippingChecked Nov 10
    Visit Home Depot
  • BreezeStopNew

    In stockReturn policy

    $32.99Checked Nov 10
    Visit BreezeStop
  • Lowe'sNew

    Availability unknown

    $32.99Free shippingChecked Nov 10
    Visit Lowe's
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $32.99Checked Nov 10
    Visit Amazon

Store links may earn us a commission.

All 5 stores and price history →

Duck Brand Foam Window AC Insulating Panels

  • WalmartNew

    In stockSold by Guard Works LLCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $14.99Checked Nov 10
    Visit Walmart
Prices and history →

Specs compared

SpecBreeze Stop Window AC Insulation KitDuck Brand Foam Window AC Insulating Panels
Materialinsulating foam covered in white flexible vinylFoam
ColorWhiteBlack
Panel thickness1’’ thick—
Window fit width36’’ wide or smaller—
Number of pieces3—
Side panel size20" x 10"—
Top panel size40" x 1.75"—
Recommended useResidential—
Recommended locationIndoor—
Item thickness1 Inches—
Product dimensions91.4L x 91.4W Centimeters—
Service LifeYear-round use—
Show all 30 specsShow fewer specs
SpecBreeze Stop Window AC Insulation KitDuck Brand Foam Window AC Insulating Panels
Filter Height0.1 cm—
Filter Length36 in—
Filter Width18 in—
Material TypeInsulating foam, Flexible vinyl—
CertificationPatented—
ManufacturerBreeze Stop—
Country Of OriginUS—
Tools RequiredScissors—
size—18 in. x 9 in. x .88 in.
Panel length

What reviewers say

Breeze Stop Window AC Insulation Kit

Owners of window AC units report the kit cuts drafts and outside noise and makes the install look finished. Most say it installs quickly with scissors and stays put through the season.

What people mention
  • DraftsPraisedOwners say cold air no longer leaks around the unit in winter.
  • NoisePraisedReviewers report less street and outside noise coming through the window.
  • InstallPraisedBuyers describe trimming with scissors and sticking it on in minutes.
  • AppearancePraisedUsers say it hides the accordion panels and looks built in.

Duck Brand Foam Window AC Insulating Panels

  • 4.5 / 5334 ratings

Buyers rate these panels well, mostly for filling side gaps quickly and cutting drafts and noise around window units. Complaints center on fit and durability rather than performance.

What people mention
  • FitMixedBuyers say the panels fit many window units but often need trimming, and some gaps are too large for the foam.
  • Draft sealingPraisedOwners report fewer drafts, dust and insects around the unit after installing the panels.
  • NoisePraisedReviewers say the foam dampens some AC vibration and outside noise.

Questions and answers

Which is better for blocking winter drafts?
The Breeze Stop, because it seals the top gap as well as the sides and uses 1 inch foam with a vinyl cover. The Duck panels only cover the sides.
Do I need the top panel?
Yes, if the gap above your unit is open. That gap is a common draft path, and only the Breeze Stop includes a panel for it.
Which lasts longer?
The Breeze Stop's vinyl cover protects the foam from wear and moisture, so it should hold up better over repeated seasons. Bare foam like the Duck panels can tear and crumble.
Can I use the Duck panels with the Breeze Stop?
You could, but it is redundant. The Breeze Stop already covers the side gaps, so adding Duck panels gains little.
Is the Breeze Stop worth stepping up to?
Yes, if you want a complete seal and a finished look. The extra top panel and vinyl cover do more than a two-panel side kit.
Will either fit a window wider than 36 inches?
The Breeze Stop standard size tops out at 36 inches; the brand sells a larger size. The Duck panels are 18 by 9 inches each and are meant for side gaps, not wide windows.

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More comparisons

  • Frost King flexible vinyl window air conditioner side vs Breeze Stop Surround Insulation for Window AC Units (Fits up to 36" wide window)
  • Frost King flexible vinyl window air conditioner side vs Duck Brand 18 Inch X 9 Inch X 0.88 Inch Black Foam Window Air Conditioner Insulating Panels, 2 Pack

Buying guides that pick them

  • Best insulated side panels for window air conditioners
—
18 in.
Panel width—9 in.
Insulation thickness—0.88 in
Panels per package—2 panels
Item weight—0.360 LB
Model number—287518
R-value—0
Weatherproofing kit type—Insulation Film
Number in pack—2
  • DurabilityCriticisedSome buyers report the foam compressing, tearing or losing shape over time.