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Deal.ai › Kohler › Water Toilets
Kohler
Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551

Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551

4.3(296 ratings)

Best price now

$537.74at Ferguson HomeChecked 12 h ago

Compared across 10 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Last seen at $537.74 at Ferguson Home on Nov 10.
  • Checked at 10 stores.

Our take on the Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551

The Kohler Archer K-3551 is a two-piece elongated toilet with a 1.28-gallon single flush and Kohler's AquaPiston flush engine. Its Comfort Height bowl sits at chair level, which helps older and taller users sit and stand. The transitional styling, curved base and beveled edges give it a cleaner look than basic builder-grade toilets. It is a solid mid-range choice against rival 1.28 GPF elongated toilets, though the seat is not included and the flush is single, not dual.

Best forTaller adults and older usersMain or guest bathroomsBuyers wanting a chair-height bowlTransitional bathroom styling
Pros
  • Comfort Height bowl is easier on knees and back
  • AquaPiston flush is reliable and quiet enough for most homes
  • Elongated bowl adds comfort
  • 1.28 GPF meets common water-efficiency standards
  • Transitional design with curved base and beveled edges
Cons
  • Seat and supply line are not included
  • Single flush only, no dual-flush option
  • 12-inch rough-in limits some replacements
  • Vitreous china chips if struck hard

Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551 prices at every store

  • The Bold Look of KohlerNew

    In stock

    $708.86Checked 12 h ago
    Visit The Bold Look of Kohler
  • ZoroNew

    In stock

    $818.99Checked 12 h ago
    Visit Zoro
  • Ferguson HomeNew

    Availability unknown

    $537.74Checked 12 h ago
    Visit Ferguson Home
  • KohlerNew

    Availability unknown

    $545.29Checked 12 h ago
    Visit Kohler
  • General Plumbing SupplyNew

    Availability unknown

    $545.29Checked 12 h ago
    Visit General Plumbing Supply
  • Easy PlumbingNew

    Availability unknown

    $545.29Checked 12 h ago
    Visit Easy Plumbing
  • WayfairNew

    Availability unknown

    $597.13Checked 12 h ago
    Visit Wayfair
  • Lowe'sNew

    Availability unknown

    $617.12Checked 12 h ago
    Visit Lowe's
  • Baths of AmericaNew

    Availability unknown

    $663.37Checked 12 h ago
    Visit Baths of America
  • SupplyHouse.comNew

    Availability unknown

    $1,072.35Checked 12 h ago
    Visit SupplyHouse.com

Store links may earn us a commission. Some prices via Klarna.

Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551 price history

Lowest price we've seen: $537.74 on Nov 10 at Ferguson Home. Tracked across 10 stores since Nov 10.

What reviewers say

  • 4.3 / 5296 ratings

Owners rate it well overall, praising the comfortable height and dependable AquaPiston flush. Complaints center on the missing seat and occasional shipping damage or fit issues.

What people mention
  • Comfort heightPraisedOwners say the taller bowl is easier to sit on and stand up from, especially for older users.
  • Flush performancePraisedThe AquaPiston flush is described as strong and reliable with few clogs.
  • SeatCriticisedBuyers dislike that no seat is included and have to buy one separately.
  • Build qualityMixedMost find the china solid, but some report chips or damage on arrival.
  • InstallationMixedMany find setup straightforward, while some report wobble or alignment problems.

Specifications

Type
Toilet
Dual Flush
No
Flush Volume
1.28 GPF
Macerating Flush
No
Flush Type
AquaPiston Flush Technology
Pressure Assisted Flush
No
Flush Features
AquaPiston Flush Technology

Questions and answers

Is the seat included?
No. The K-3551 is sold as the toilet only, so you need to buy an elongated seat separately.
What rough-in does it need?
It uses a standard 12-inch rough-in, so measure the distance from the finished wall to the floor drain before ordering.
How much water does it use per flush?
It uses 1.28 gallons per flush, a single-flush design that meets common efficiency standards.
Is Comfort Height worth it?
For taller adults or anyone with knee or hip issues, the chair-height bowl is noticeably easier to use than a standard-height toilet.
Does it come with a supply line or wax ring?
No. Only the toilet is included, so plan to buy a wax ring, bolts and supply line separately.
How does it compare with a dual-flush toilet?
It offers one flush volume and a simpler mechanism, while dual-flush models let you choose a lower flush for liquid waste.
Where is the Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551 cheapest?
At Ferguson Home, for $537.74, as of our latest check.
What do buyers say about the Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551?
Rated 4.3 out of 5 from 296 ratings.
Where can I buy the Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551?
10 stores we checked sell it, including The Bold Look of Kohler, Ferguson Home, Kohler, General Plumbing Supply, Easy Plumbing.

Stores we've priced the Kohler Archer Comfort Height Two-Piece Elongated 1.28 GPF Toilet K-3551 at

  • Ferguson Home deals and prices
  • Lowe's deals and prices
  • Wayfair deals and prices
  • Zoro deals and prices

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Included Accessories
Product Only
Size Dimensions
30 in. (Overall Height)
Rough-In Size
12 in.
Installation Type
Floor mounted
Bowl Shape
Elongated
Bowl Material
Vitreous china
Seat Size
Elongated
Seat Type
Elongated
Seat Features
Seat Not Included
Seat Material
Plastic
Color
KOHLER colors
Height
Comfort Height
Length
29 in.
Style
Transitional
Width
17-7/8 in.
Design Highlights
Curved bases, Beveled edges
Design Shape
Oval