As your most economical toilet choice, the two-piece toilet is hard to beat. Less expensive than a one-piece toilet equivalent, this toilet design will appeal to the toilet buyer who is on a tight budget.

Even though you’re on a budget and decide to go with a two-piece toilet, you don’t have to eschew features or style. All two-piece toilets are of a water saving design, with the American Standard 288DA114.020 with a 1.1 GPF (Gallon per flush). The TOTO CST744SL#01 isn’t far behind at 1.6 GPF!

While you’re potentially spending less money for your toilet, you can have a very elegant style with theKOHLER K-3819-0 at a very low cost. The classic two-piece toilet design, while lower in price that one-picec toilets and most elogated toilets, can be a great choice for your bathroom project. Most of the quality brands we discuss can last decades without problems and will look great wherever you install them.

The Most Efficient Toilet – Highest Water Saving Gravity Flush Toilet Available!

The American Standard H2Optimum Siphonic 1.1 GPF just happens to be the most efficient gravity flush toilet on the market today!

You save the most water with a flush rate of only 1.1 gallons of water, every time you use this toilet.

American Standard H2Optimum Siphonic 1.1 GPF

American Standard H2Optimum Siphonic 1.1 GPF – Image Courtesy American Standard

Don’t be fooled thinking that the tiny water consumption of only 1.1 gallons per flush makes this toilet sub-par in performance. Just the opposite is true! Careful, computer-optimized trap design and American Standard’s exclusive EverClean ceramic surfaces provides a non-stick micro-finish surface and virtually guarantees clog-free performance for years to come.

The H2Optimum is a two-piece round bowl design which will save space and is ideal for installation in smaller bathrooms. Aftermarket seat availability is virtually unlimited for this round-bowl design too!

The American Standard exclusive EverClear surface has proven to inhibit the growth of odor and stain-causing bacteria, giving you the sanitary assurances that you expect from American Standard.

If you’re looking for the best, most-efficient two-piece toilet, then the American Standard H2Optimum Siphonic 1.1 GPF is the one you need!



  • Vitreous china is durable and long-lasting
  • Meets EPA WaterSense criteria
  • MaP PREMIUM listed – see details HERE
  • EverClean surface inhibits the growth of stain and odor-causing bacteria, mold, and mildew on the surface
  • PowerWash rim scrubs bowl with each flush
  • Round front siphon action bowl with direct-fed jet
  • Chrome finish trip lever is supplied
  • Sanitary bar on bowl
  • 2 color matched bolt caps
  • Limited lifetime warranty on chinaware and limited five year warranty on all mechanical parts
  • Seats sold separately


  • Ultra high efficiency toilet (UHET) uses 4.2Lpf/1.1gpf
  • H2Optimum Siphonic Round Front Toilet – 1.1 GPF

TOTOCST744_GAL_02As one of TOTO’s most popular toilet models, the TOTO CST744SL#01 is designed with the exclusive G-Max flushing system that ensures clog-free flushes while saving water with a 1.6 gallon flush.

The fully glazed trapway with a smooth ceramic finish, along with the enlarged trapway that’s part of the G-Max flushing system, reduces the chances of waste particles collecting in the trapway, reducing the chances for a clog.

The elongated seat is almost 2 inches longer than a round-bowl toiles and is more comfortable to use, standing up or sitting down.

The TOTO CST744SL#01 is ADA compliant which means this toilet is designed for the use of people of every age and capability without the need for any special modifications or adaptations.

The TOTO has a 12 in rough-in which means that it will fit in most bathrooms without modification! Please double-check your installation before purchase – just to be sure!

KOHLER K-3819-0

KOHLER K-3819-0 Memoirs Comfort Height Two-Piece Elongated 1.6 gpf ToiletThe KOHLER K-3819-0 is part of the Kohler Memoirs collection, a collection of traditionally-styled toilets that are sure to delight a traditionally-minded style lover. The crisp, upright lines are classically styled and invoke impressions of solidity, old-world design, and craftsmanship while the computer designed working parts insure a modern water-saving toilet in every way! The best news of all is that fixtures and faucets are available that match this style so your bathroom decor can look great and work great!

The KOHLER K-3819-0 will fit in virtually any bathroom with a 12 in rough-in.


  • Two-piece toilet – lower cost and great traditional design.
  • Elongated bowl offers added room and comfort, especially for people of all sizes.
  • Comfort Height® feature offers chair-height seating that makes sitting down and standing up easier for most adults. You can be assured of total comfort with this toilet.
  • 1.6 gallons per flush (gpf). This is a low water consumption toilet that can save thousands of gallons of water per year over traditional 3.5 gallon toilets.
  • 2-1/8-inch glazed trapway. Glazing the trapway means that waste is much less likely to collect in the trapway and clog the toilet, unlike unglazed trapways.
  • Combination consists of the K-4380 bowl and the K-4642 tank. The two pieces are joined with a state-of-the-art gasket that will provide leak-free performance for years to come!
  • Coordinates with other products in the Memoirs collection with Stately design. You can outfit your entire bathroom with similar-styled fixtures and accessories that will look great and last for years to come!
  • Note: This product cannot be shipped to CA, CO and TX. Dang – that’s truly a shame!
    AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush. This technology helps to keep the toilet cleaner and more sanitary, flush after great flush.
  • Flush valve’s 3: 2 ratio harnesses the natural force of gravity and optimizes flush performance. Gravity technology is reliable and provides consistent performance for years to come.
  • Durable canister design has 90% less exposed seal material than a 3-inch flapper, for leak-free performance. The replaceable cannister is designed to last for years under normal use.


Standard 12-inch rough-in. This toilet should fit in most residential bathrooms. Please measure before ordering!
Three-bolt installation – easy and straightforward installation.
Seat and supply line not included. When installing any toilet, you should get a new water supply line. Available at most hardware stores including Home Depot, Lowe’s and Ace Hardware stores.