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Toto Construction in Fontana, CA | Stallion Contractors
We install and service Toto toilets, washlets, and Neorest systems across Fontana, and the one thing that separates our Toto work from anyone else’s is that we plan for what Fontana’s water and wind actually do to these fixtures. Hard-water scale, dust intrusion, slab movement in older tract homes: those are local problems, and we’ve built our Toto service around them. If you need a Toto installed, repaired, or honestly assessed in Fontana, call (855) 600-3192 for a free estimate. We’re an independent Toto service provider, not a manufacturer-authorized dealer, which means our recommendations come from job-site experience, not a corporate playbook.

Why Fontana Residents Choose Us for Toto Service
Ruben Montoya grew up in Colton and has spent more than two decades working on Inland Empire homes, so he knows what Fontana’s post-WWII tract housing stock and newer subdivisions throw at a bathroom fixture. Our crew handles Rialto Toto service, Drakes, Ultramax IIs, Neorests, and Washlet seats throughout 92337, 92331, 92334, and 92335. We carry OEM Toto fill valves, flappers, gaskets, and rough-in specs for the models most common in Fontana, which means we’re not ordering parts and hoping they arrive next week. We treat every job as an independent installation: no manufacturer authorization, just hands-on familiarity with how Toto’s high-efficiency designs perform under Fontana’s municipal water and dust conditions. Good work doesn’t need a sales pitch, it needs the right materials and someone who knows what they’re doing.
Styles & brands we work with







Common Toto Construction Problems We Solve in Fontana
- Fill valves scaled shut from hard water. Fontana’s municipal water carries elevated mineral content, and we routinely find Toto fill valves so caked with scale they can’t refill the tank properly. The result is slow, weak flushes or a toilet that won’t shut off. We descale or replace with OEM parts and often add an inline filter on the supply side.
- Washlet sensors throwing errors or shutting down. Dust from the Cajon Pass finds its way into bathroom vent stacks and onto washlet sensors and bidet seats. Intermittent operation, phantom shutoffs, premature wear: these are dust problems as much as electronics problems. We clean sensors and add protective measures during every Toto install in Fontana.
- Wax-ring failures from minor slab movement. Older tract homes in ZIP 92335 and 92336 sit on slabs that shift slightly over decades. That movement cracks wax rings and sometimes toilet flanges, causing slow leaks at the base that go unnoticed until the subfloor is stained or soft. We replace the ring, assess the flange, and tell you honestly if the subfloor needs attention.
- Rim jets clogged with mineral buildup. High-efficiency Toto models like the Drake and Eco Drake use rim jets to create a strong flush with less water. When those jets calcify, flushing performance drops. We descale the jets and bowl inlets as part of regular Toto service, which beats replacing a fixture that still has years left in it.
- Washlet inlet screens blocked by sediment. The inlet screens on Toto Washlet models like the S550e and C5 are fine mesh, and Fontana’s water leaves enough mineral sediment behind to restrict flow. That causes weak washlet spray or a complete malfunction. A screen cleaning and a supply-line filter solves it in most cases.
Toto Service in Fontana: What Local Conditions Mean for Your Equipment
Here’s the thing about Fontana that changes how we approach every Toto installation: this city sits at the base of the Cajon Pass, where wind-blown dust is a constant. We add insect screens and filter maintenance to every Toto install we do in Fontana because dust infiltrates bathroom vent stacks and washlet sensors in ways contractors in Rancho Cucamonga or other neighboring cities rarely deal with. It’s a step most installers skip entirely. In a 1960s tract home off Sierra Avenue in ZIP 92335, we performed Glen Avon Toto service on a failed Drake fill valve that had scaled shut from Fontana’s hard water. After flushing the supply line and installing an inline filter, the toilet flushed like new. The homeowner had assumed the whole toilet needed replacing, but we saved it with a $40 OEM part and a descaling service. That’s the difference between guessing and knowing what Fontana homes actually deal with.
Toto Models & Products We Service in Fontana
We work on the full Toto lineup common in Fontana homes: Drake and Eco Drake, Ultramax II, Neorest, and Washlet seats including the S550e and C5. Our approach to parts is simple. Critical components like fill valves, flappers, and washlet pumps get genuine OEM Toto parts, because those parts carry performance and warranty implications. We’ll spec quality aftermarket wax rings and supply lines where they meet code and do the job properly. For Fontana service calls, we keep the most common Toto parts on our trucks so the work doesn’t stall waiting on a shipment. For broader Toto needs, see our Toto sales & service page.
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AfterToto Service Pricing in Fontana
Here’s the straightforward pricing for the Toto-related construction work we handle in Fontana. These ranges come from actual jobs in this market, not a national average chart.
| Service | Price Range |
|---|---|
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives cost on a Toto installation or repair in Fontana: the condition of existing plumbing, whether slab movement has affected the flange, what model you’re installing, and whether dust or scale damage has spread beyond the fixture itself. Our free estimates are line-item written quotes, so you know exactly what you’re paying before any work starts. Call (855) 600-3192 to schedule yours.
Serving Fontana, CA — Our Local Coverage Area
We’re a General Contractor – Fontana based in the area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.

FAQs – Toto Construction in Fontana
In Fontana, erratic Washlet operation almost always traces back to dust intrusion or mineral buildup. Dust from the Cajon Pass infiltrates the sensor housing and control electronics, while hard-water sediment clogs the inlet screen and restricts flow. We add screens and filters during installs specifically because this happens so often here. Call (855) 600-3192 and we’ll diagnose it, often the same visit.
Usually, yes, but it depends on the bathroom’s electrical access and the condition of the existing flange and rough-in. Older tract homes often need a dedicated GFCI circuit added for the Neorest’s integrated washlet functions, and a slab floor may need flange work before the new fixture goes in. We’ll tell you exactly what the job requires during the free estimate.
Not necessarily. In Fontana’s older slab homes, minor foundation movement cracks wax rings and can loosen the flange bolts, which causes rocking and a slow leak — a common issue we address with Pedley Toto service. The porcelain is usually fine. We replace the wax ring, re-seat the toilet, and assess the flange. If the repair costs more than half the price of a new fixture, we’ll say so plainly and recommend replacement.
Yes, for critical components. Fill valves, flappers, washlet pumps, and electronic parts get OEM Toto hardware because those parts affect performance and warranty. For non-critical items like wax rings and supply lines, we use quality aftermarket products that meet code and hold up under Fontana conditions.
Fontana’s municipal water leaves mineral scale on fill valves, flappers, and rim jets, which reduces flush power and can eventually cause the toilet to run or malfunction. Toto’s high-efficiency models are more sensitive to scale because they use less water. A descaling service and an inline filter extend the fixture’s life significantly. Call (855) 600-3192 for an exact quote, estimates are free.
Service Areas Near Fontana
Our Toto service covers all of Fontana, including ZIPs 92337, 92331, 92334, and 92335. We also serve neighboring communities, including Fontana service area coverage that extends to Colton, Bloomington, Mentone, San Antonio Heights, Loma Linda, and Redlands. If you’re in Toto service in Colton territory or closer to Toto service in Bloomington, the same crew and the same parts inventory get to you.
Book Your Toto Service in Fontana Today
If your Toto toilet is flushing weak, your Washlet is acting up, or you’re planning a bathroom remodel that includes new Toto fixtures, let’s get it scheduled. Call (855) 600-3192 for a free estimate, and we’ll give you a straight answer on what the job takes. Same-day visits are possible for urgent Toto repairs in Fontana, and our estimates are always free.
Written by Ruben Montoya, Owner at Stallion Contractors, serving Fontana since his early days in the Inland Empire trade.