Where to Buy Toilets: Home Depot vs Lowes vs Online

Buying a toilet sounds simple until you realize there are more than 400 models across six major brands, three rough-in sizes, two bowl shapes, and a range of flush technologies. Where you buy can determine what you actually get access to, what installation support you receive, what return window you have, and ultimately what you pay.

This guide covers every major channel: Home Depot, Lowes, online retailers (Amazon, Wayfair, Build.com, and brand-direct sites), plumbing supply houses, and wholesale clubs. Each channel has a distinct advantage profile. Understanding them prevents the most common mistake buyers make, which is defaulting to whichever big box store is nearest without checking whether it actually stocks what they need.

The head-to-head comparison between Home Depot and Lowes is frequently overanalyzed. Both stores source from the same major manufacturers, both run similar promotional cycles, and both offer installation through third-party licensed plumbers. Where they genuinely differ is in local execution: one store may carry more display models in your area, one may have a shorter installation wait, and one may simply have the specific model you want in stock that day.

That said, several structural differences are worth knowing before you walk in.

Home Depot's in-store brand lineup is deliberately anchored around the major American brands. Kohler and American Standard account for the majority of floor space in most locations. TOTO availability is the most variable: larger urban stores may stock four to eight TOTO SKUs, while smaller suburban stores may carry only the TOTO Entrada.

Notable brands you will not find at Home Depot include Swiss Madison, Woodbridge (except occasional online-only listings), Gerber, and Mansfield. These brands have distribution agreements that favor plumbing supply houses and online channels over major big box retailers. If your shortlist includes any of these, Home Depot is not your channel.

The Glacier Bay brand deserves a specific note. As Home Depot's private label, it is the most affordable option on their floor, frequently starting well under other brands. MaP flush testing scores for Glacier Bay models vary widely: some models score 600-800 grams, which is serviceable, while others fall below 500 grams. Review the specific model's published MaP score before purchasing rather than assuming private label means equivalent quality to branded alternatives.

Lowes tends to run slightly deeper on mid-tier American Standard and Kohler models and shallower on TOTO. The Lowes private label (Style Selections) follows a similar positioning to Home Depot's Glacier Bay: entry-level pricing with variable MaP performance depending on the specific model.

One advantage Lowes has held in recent years is stocking the Kohler Cimarron in the AquaPiston flush variant more consistently than Home Depot in certain markets. The Cimarron AquaPiston is a notable value: it carries EPA WaterSense certification at 1.28 GPF, achieves a MaP score above 1,000 grams in the standard configuration, and uses Kohler's AquaPiston canister flush valve, which is significantly more reliable over time than the traditional tower or flapper valve designs.

The online channel has become the dominant path for informed toilet buyers for several concrete reasons. First, selection: Amazon lists more than 2,000 toilet models. Wayfair carries a comparable range with more emphasis on mid-range and design-oriented brands. Build.com and eFaucets focus on plumbing brands and tend to carry the full TOTO and Kohler lineup, including models that big box stores do not stock.

Second, pricing: online channels are often less expensive than big box retail on identical models, particularly for TOTO, Woodbridge, and Swiss Madison. Neither Woodbridge nor Swiss Madison has a significant big box retail presence, and their online pricing reflects direct-to-consumer economics.

Third, access to verified MaP scores and EPA WaterSense certification information is easier online. Product pages on Build.com and eFaucets routinely list MaP scores. Amazon pages for TOTO and American Standard models typically include certification details in the product specifications. Big box stores rarely display this information on shelf tags.

For one-piece toilets specifically, online purchasing is often the only viable path to the model you want. One-piece toilets like the TOTO UltraMax II, Kohler Santa Rosa, and Woodbridge T-0001 are stocked in a fraction of physical stores and frequently listed as "online only" even on Home Depot and Lowes websites. Buying through Amazon or Build.com for these models is not a workaround; it is the intended retail channel.

Ferguson Enterprises is the largest plumbing supply network in the United States, with showrooms in most metropolitan areas that are open to the public. Their toilet selection is significantly deeper than any big box store: a typical Ferguson showroom carries display models from TOTO, Kohler, American Standard, Duravit, Gerber, and Mansfield, and can order any model in each manufacturer's catalog.

The specific situations where a plumbing supply house is the right answer:

• You need a 10-inch or 14-inch rough-in toilet. Big box stores stock almost exclusively 12-inch rough-in models. Supply houses stock all three sizes across multiple brands.
• You are installing a wall-hung toilet. These require a carrier frame embedded in the wall and are almost never stocked at big box retail. Supply houses carry the full Kohler, TOTO, and Duravit wall-hung lineup.
• You need a commercial or ADA-specific model for a rental property or ADA renovation. Supply houses stock the commercial ADA lineup from American Standard and Gerber.
• Your plumber is buying the toilet for you. Most plumbers use supply houses for their own purchases and can often source at trade pricing, then pass savings through.

Breaking this down by brand gives the clearest purchasing guidance:

TOTO: The Drake II and UltraMax II are the most widely purchased TOTO models and are available online through Amazon, Build.com, and eFaucets. The Drake (non-II) is widely stocked in-store at Home Depot. The Aquia IV dual-flush is best purchased online because in-store availability is inconsistent. TOTO's Tornado Flush technology, which uses two nozzles to create a cyclonic rinse, is available only on models in the $400+ range and above, and these are almost exclusively online purchases.

Kohler: The Highline, Cimarron, and Wellworth are appropriate in-store purchases at either big box retailer. The Veil intelligent toilet and higher-end one-piece models are best purchased through Kohler's own website or an authorized dealer where specification support is available.

American Standard: Champion 4 and Cadet 3 are textbook in-store purchases. Both are consistently stocked, well-priced at big box retail, and benefit from seeing the display model. The VorMax and more advanced models are better sourced online where the full specification and certification details are available.

Woodbridge: The T-0001 and B-0750 are essentially online-only products. Woodbridge has no significant big box retail presence. Amazon is the primary channel, with Wayfair and eFaucets as alternatives. The Woodbridge T-0001 has developed a strong owner review profile: it achieves a MaP score of 1,000 grams, carries EPA WaterSense certification at 1.28 GPF, and uses a fully glazed trapway. It consistently outperforms similarly-priced big box alternatives on flush performance metrics.

Swiss Madison: Similar to Woodbridge, Swiss Madison is effectively online-only. The St. Tropez and Clarence models have developed a following for their modern skirted design at accessible price points. Both carry EPA WaterSense certification. Purchase through Amazon or Wayfair.

Gerber: Gerber Viper and Gerber Ultra Flush models are distributed through plumbing supply houses and some independent hardware stores. Big box availability is limited. If you want Gerber, a supply house or Build.com is the right channel. The Gerber Ultra Flush achieves a MaP score of 1,000 grams at 1.0 GPF, making it one of the most water-efficient high-performance toilets available.

For more guidance on matching model to situation, see our guide on best flushing toilets and our complete toilet buying guide.

The practical implication of this is that measuring your rough-in before purchasing is non-negotiable. The rough-in is the distance from the wall behind the toilet to the center of the drain pipe. Standard rough-in is 12 inches, which covers the vast majority of residential installations. However, older homes built before 1980 frequently have 10-inch rough-ins, and some renovation configurations create 14-inch rough-ins. Installing a 12-inch rough-in toilet in a 10-inch rough-in space requires either moving the drain (expensive) or using a toilet specifically designed for 10-inch rough-in.

See our detailed article on how to measure toilet rough-in before purchasing. One incorrect measurement creates a return scenario that most retailers handle poorly, and some online retailers charge restocking fees for large freight items.

Freight damage is the other return trigger specific to online toilet purchases. One-piece toilets ship in large, heavy boxes and can arrive with cracked tank lids, chipped bowls, or damaged bases. The standard protocol is to inspect packaging at delivery and document any damage with photos before the driver leaves. Most Amazon sellers, Build.com, and eFaucets handle freight damage claims efficiently, but undocumented damage discovered post-delivery can complicate claims.

Both Home Depot and Lowes offer toilet installation through their home services programs. The standard service covers removing and hauling away the old toilet, installing the new toilet with a new wax ring and supply line, and verifying the connection is leak-free before leaving. Neither store employs plumbers directly; both contract with local licensed plumbers through their respective services networks.

Typical installations at either store are quoted at a flat rate that covers labor and a basic wax ring. Upgrades such as supply line replacement beyond a short run, repairing a damaged flange, or installing a toilet with a non-standard rough-in are priced additionally or may require a separate plumber assessment. Fees vary by market.

The key limitation of big box installation services is scope. If the plumber arrives and discovers a cracked flange, significant water damage under the floor, or incorrect rough-in dimensions, the installation typically stops and is rescheduled after repairs are completed by a separate contractor. This is a risk that independent licensed plumbers handle more flexibly, since they can assess, quote, and often complete ancillary repairs on the same visit.

For a straightforward swap of an existing toilet to a new same-rough-in model, both Home Depot and Lowes installation services perform reliably. For anything more complex, an independent licensed plumber provides more flexibility, though typically at higher cost. See our article on how much toilet installation costs for a detailed breakdown.

Costco's toilet selection is worth monitoring if you are not in a time-sensitive situation. Their Costco.com listings include models from Swiss Madison and occasionally TOTO at prices that reflect Costco's buying power. The catch is lack of predictability: a model available today may be discontinued from their rotation next week. For specific model targeting, Costco is supplementary research, not a primary channel.

Toilet pricing does not follow the same seasonal pattern as appliances, but there are predictable discount windows worth knowing.

Spring (March through May): Both Home Depot and Lowes run spring home improvement promotions that typically include 10-15% off select plumbing fixtures. This is historically the best in-store discount window at big box retail.

Memorial Day and Labor Day: Both major chains run weekend sales that frequently include toilet category discounts, particularly on mid-range Kohler and American Standard models.

Black Friday: Big box Black Friday deals occasionally include toilets, though the discounts are usually shallower than appliance categories. Online retailers such as Wayfair run more aggressive toilet discounts during Black Friday and Cyber Monday. Swiss Madison and Woodbridge pricing on Amazon can drop 15-25% during these windows.

Tax season (February through March): Some retailers capitalize on tax refund timing with home improvement promotions. Lowes has run targeted plumbing promotions in this window historically.

For most buyers, waiting for a promotional window is worth one to two months of patience, particularly on mid-range to high-end models. Kohler Cimarron at full retail versus Cimarron during a spring promotion at Home Depot represents a meaningful difference. TOTO models discount less frequently but do appear in Amazon seasonal sales.

Following this sequence prevents the most common purchasing mistakes.

Step 1: Measure your rough-in. Do this before looking at any model. The rough-in measurement (center of drain to finished wall) determines which toilets will fit. 12 inches covers most homes. Non-standard rough-ins narrow your options significantly.

Step 2: Determine bowl shape preference. Elongated bowls (18-19 inches front to back) are the most common and most comfortable. Round bowls (15-16 inches) fit smaller bathrooms. Confirm you have clearance before committing to elongated if the bathroom is compact.

Step 3: Confirm rough-in height preference. Comfort height (also marketed as chair height or ADA height) sits at 17-19 inches from floor to seat. Standard height sits at 14-16 inches. Most buyers over 45 prefer comfort height; shorter individuals and children often prefer standard.

Step 4: Set your flush performance floor. Consult MaP flush testing data for any model you are considering. MaP scores above 800 grams are good for residential use. MaP scores of 1,000 grams (the maximum) indicate the highest flush performance. American Standard Champion 4, TOTO Drake II, TOTO UltraMax II, Woodbridge T-0001, and Gerber Ultra Flush all achieve MaP 1,000.

Step 5: Verify EPA WaterSense certification if water efficiency matters. WaterSense-certified toilets use 1.28 GPF or less while maintaining adequate flush performance. Most TOTO, Kohler, and American Standard mid-range and above models carry WaterSense certification. See our guide on EPA WaterSense toilets for a complete list.

Step 6: Choose your channel. If you want same-day pickup and the model is in stock at your local Home Depot or Lowes, go in-store. If the model you want is unavailable locally or you are purchasing TOTO, Woodbridge, Swiss Madison, or Gerber, purchase online through Amazon, Build.com, or eFaucets. If you have a non-standard rough-in or a wall-hung installation, contact a plumbing supply house.

Step 7: Decide on installation. DIY installation is achievable for a standard swap with no complications. If you are not comfortable with basic plumbing (shut off valve, wax ring, supply line connection), budget for professional installation. Decide whether to use big box services (requires same-store purchase) or an independent plumber (no restriction).

For a deeper pre-purchase checklist, see our toilet buying checklist.

• EPA WaterSense, epa.gov/watersense
• MaP flush testing, map-testing.com
• Manufacturer published specifications
• Home Depot product catalog and installation services terms, homedepot.com
• Lowes product catalog and installation services terms, lowes.com
• TOTO USA authorized dealer list, totousa.com
• Ferguson Enterprises showroom and product listings, ferguson.com

• Best Flushing Toilets: Top Picks Ranked by MaP Score
• Complete Toilet Buying Guide: Every Decision Explained
• How to Measure Toilet Rough-In in 3 Steps
• Best EPA WaterSense Certified Toilets
• How Much Does Toilet Installation Cost?