My Toilet Was Discontinued: How to Find the Best Replacement

Toilet models are discontinued more often than most homeowners realize. Manufacturers update their lineups every few years, discontinuing older models to focus on more water-efficient or aesthetically updated designs. When your toilet finally fails -- or you just want to upgrade -- the challenge is finding a replacement that fits your existing rough-in, bowl shape, and water supply setup without requiring a full bathroom renovation.

This guide walks you through the exact process: identifying your current toilet's critical specifications, decoding what replacement options exist from TOTO, Kohler, American Standard, Woodbridge, Swiss Madison, and Gerber, and matching those options to proven MaP flush scores and EPA WaterSense certification data so you end up with a toilet that outperforms what you lost.

Why do toilet models get discontinued?

Between 2015 and 2024, the major brands -- TOTO, Kohler, American Standard, Gerber, and Mansfield -- discontinued hundreds of model numbers. Some of those were genuine innovations killed by low sales; most were simply older designs replaced by newer ones with better flush mechanics. The good news is that nearly every discontinued toilet has a current-production equivalent that fits the same rough-in and performs better on flush testing.

What measurements do I need before buying a replacement toilet?

How do I look up the specifications for my discontinued toilet?

The model number search is worth doing carefully. Knowing your old toilet's exact MaP score gives you a baseline to beat with the replacement -- and most current-production toilets from the major brands score significantly higher than models made before 2015. The MaP testing program, administered independently by Veritec Consulting and has tested over 4,000 toilet models since 2003, uses 50-gram soy paste balls in standardized flush tests to measure actual bulk waste removal. A score of 1,000 grams is the maximum and represents near-perfect performance.

Which current toilet models replace the most common discontinued toilets?

The chart below maps common discontinued model families to their best current replacements. This is not an exhaustive list, but it covers the models most frequently cited in homeowner forums and plumbing supply archives.

What should I look for in terms of flush performance and water efficiency when replacing a discontinued toilet?

Water efficiency has improved dramatically over the last decade. If your discontinued toilet was a 3.5 GPF model from the 1980s or a 1.6 GPF model from the 1990s, replacing it with any current WaterSense-certified toilet at 1.28 GPF will save a household of four people between 13,000 and 22,000 gallons per year according to EPA estimates. At average U.S. water rates, that translates to meaningful annual savings without any reduction in flush effectiveness -- current 1.28 GPF models routinely outperform 1.6 GPF toilets from a decade ago on MaP testing.

For a comprehensive overview of current high-performance options, see our guide to the best flushing toilets across all categories and price points.

How do I handle a non-standard rough-in when replacing a discontinued toilet?

Non-standard rough-ins are most common in homes built before 1970 and in some regional construction traditions in the Southeast and Pacific Northwest. If you are in an older home and are unsure of your rough-in, measure from the finished wall (not the baseboard) to the center of the two floor bolts visible at the base of the toilet. In a two-piece toilet, the center of those bolts should align with the center of the tank. Always confirm by measuring -- do not assume the standard 12-inch dimension applies.

Related: Best Toilets for 10-Inch Rough-In and Best Toilets for 14-Inch Rough-In cover every in-production model by rough-in size.

Specific Replacement Recommendations by Discontinued Model Type

The following breakdown addresses the most common discontinued model categories. Each recommendation accounts for rough-in compatibility, flush performance, and the design profile most similar to the original.

Replacing Old 3.5 GPF or 5 GPF Toilets

These are typically pre-1992 toilets still operating in older homes. Any current WaterSense toilet will reduce water consumption by 60 to 80 percent. The American Standard Champion 4 is particularly recommended here because its 2-3/8-inch trapway handles the bulk waste load that older, high-volume toilets were designed for -- you get equal or better clearing capacity at roughly 28 percent of the water volume.

For one-piece aesthetics in older bathrooms that benefit from easier cleaning, the TOTO UltraMax II (MS604114CEFG) delivers a 1,000-gram MaP score, CeFiONtect ion-barrier ceramic glaze, and a footprint that fits 12-inch rough-ins cleanly. See our complete toilet replacement guide for the full installation sequence.

Replacing Discontinued Dual-Flush Models

Older dual-flush toilets -- particularly first-generation models from Caroma and some early Kohler dual-flush experiments -- are prone to fill valve and flush button failures as parts become unavailable. The TOTO Aquia IV (CST446CEMFG) is the most reliable current dual-flush replacement, with a 0.9 / 1.28 GPF dual-flush system, 1,000-gram MaP score on the full flush, and WaterSense certification. The Woodbridge T-0001 offers a similar dual-flush format at a lower price point with 800-gram MaP performance.

Replacing Discontinued Smart Toilets

Discontinued smart toilet models (integrated bidet seats with electronic flush controls) are the hardest to replace because they combine toilet plumbing with electrical components that may no longer have supported firmware or replacement parts. The TOTO Neorest series and Kohler Veil intelligent toilets are the current standard-bearers for fully integrated smart toilets. For homeowners who want bidet functionality without replacing the entire toilet, a standalone WASHLET seat (TOTO S500e or S550e) installed on a standard Drake II provides comparable functionality at lower total cost.

Related: Best Flushing Smart Toilets covers current integrated models with full specification comparisons.

Replacing Discontinued Pressure-Assist Models

Pressure-assist toilets use compressed air to power the flush cycle and were popular in the 1990s and 2000s for commercial and heavy-use residential applications. The Flushmate cartridge inside many of these models is still serviceable through Flushmate's parts program (flushmate.com), which may extend the life of your existing toilet without a full replacement. If the toilet itself is cracked or the vitreous china is failing, the American Standard Cadet Pro with Flushmate or the Gerber Ultra-Flush with Flushmate are the primary in-production replacements. Both offer 0.8 GPF or 1.0 GPF pressure-assist flushing with MaP scores above 800 grams.

When to Consider a Full Brand Switch

If your discontinued toilet was from a regional or private-label brand -- many builder-grade toilets sold through now-defunct regional plumbing supply chains carry house brand names with no surviving parent company -- there is no equivalent replacement from the same brand. In this case, use the rough-in, bowl shape, and height measurements to match against the TOTO Drake II, Kohler Cimarron, or American Standard Cadet 3 as starting points. All three are available nationwide, carry manufacturer warranties of one year minimum (TOTO offers one year on parts, Kohler offers a limited lifetime on the toilet itself), and have documented MaP test results publicly available.

Installation Checklist Before Removing Your Old Toilet

Before you remove the discontinued toilet and before your replacement arrives, verify the following items to avoid a situation where the old toilet is out and the new one cannot be installed:

• Rough-in measured from finished wall to center of floor bolts (not from baseboard)
• Floor flange condition -- inspect for cracks or corrosion once the old toilet is off; replace if damaged
• Water supply stub-out location -- confirm left or right side and height above floor
• Available floor space in front of and beside the toilet -- check clearance requirements (15 inches minimum from center of toilet to any side wall per most codes)
• Existing toilet seat bolt pattern -- if reusing an existing toilet seat, confirm the new bowl's bolt hole spacing matches
• Drain pipe material -- cast iron, PVC, or ABS affects flange compatibility

A wax ring and new floor bolts (johnny bolts) should be purchased with the toilet even if the old ones appear intact -- both are low-cost consumables that should be replaced at every toilet installation. Some manufacturers include these in the box; most do not. Confirm before ordering.

Where to Buy a Replacement for a Discontinued Toilet

Plumbing supply houses (Ferguson, Noland, National Waterworks) carry a broader selection of models including 10-inch and 14-inch rough-in variants that big-box retailers may stock only by special order. For TOTO models in particular, authorized TOTO dealers maintain regional warehouse stock that can be shipped faster than online-only retailers. Kohler and American Standard are available nationwide through Home Depot and Lowe's with in-store pickup options for standard 12-inch models.

Online retailers including Amazon, Build.com, and Wayfair carry most major models with competitive pricing. When ordering online, verify the exact model number against the manufacturer's current product page before purchase -- some online listings use outdated model numbers that have been superseded by updated versions with different specifications.

Related: Where to Buy Toilets: Online vs. Retailer vs. Plumbing Supply breaks down pricing and availability by channel.