Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Toto Construction in Moreno Valley, CA | Square One Builders
We provide independent Toto installation, repair, and replacement service across Moreno Valley and nearby areas like Toto in March Air Force Base, from the west-side tracts off the 60 to Rancho Belago on the east side. Toto fixtures are built well, but Moreno Valley’s hard water, inland heat, and Santa Ana wind events create failure patterns you won’t see in coastal cities. We diagnose the actual problem and fix it right, whether that means an OEM part or a quality aftermarket seal, so your bathroom stops wasting water and works the way it should. If your Toto is running, leaking, or spraying wrong, call us at (877) 688-9930 for a free estimate.

Why Moreno Valley Residents Choose Us for Toto Service
We’ve installed and serviced Toto toilets and bidet seats across hundreds of Inland Empire homes, so we know their fill valves, flush towers, and Washlet electronics the way a mechanic knows a specific engine. Our independent status matters. We’re not a manufacturer affiliate, which means nobody pushes us to upsell you on parts you don’t need. When a Toto Eco Drake starts ghost-flushing, we open the tank, look at what actually warped or wore out, and give you a straight answer.
Brent Calloway, owner and general contractor at Square One Builders, learned framing and concrete work through Golden West College’s Construction Technology program before spending decades on ground-level residential work throughout Southern California. That background shows in how we approach every Toto service call: diagnose first, explain the fix in plain language, then do clean work that holds up. We use a curated brand portfolio across every home system, and for Toto we keep genuine fill valves, flush towers, and Washlet nozzles ready for fast Moreno Valley turnaround. Learn more about our Toto sales & service.
Styles & brands we work with







Common Toto Construction Problems We Solve in Moreno Valley
These are the failure patterns we see most often when servicing Toto fixtures across Moreno Valley and Toto in Woodcrest, from Perris Boulevard to the newer east-side subdivisions.
- Hard-water scale clogging Washlet spray nozzles. Moreno Valley’s water carries heavy mineral content. The small orifices in Toto Washlet C-series and S-series spray nozzles scale up until the stream goes weak or sprays off target. Owners often think the pump failed. It’s usually a clogged nozzle assembly.
- Ghost flushing from heat-fatigued fill valves. Original fill valves in Eco Drake and Ultramax toilets wear out after years of cycling through 100°F+ attic heat that radiates into second-story bathrooms. The symptom is the toilet running for a few seconds every hour, often when nobody’s used it.
- Tank-to-bowl gasket and bolt seal failure. Inland heat and low humidity dry out rubber seals. We routinely find cracked tank gaskets and weeping bolt seals that leak slowly onto the floor without obvious pooling. Left alone, the subfloor under the toilet rots.
- Washlet control board and seat sensor failures from humidity spikes. During late-summer monsoon humidity, poorly vented bathrooms trap moisture. Toto Washlet control boards and seat sensors fail prematurely in that environment, especially in older tract homes where the exhaust fan is undersized or venting into the attic.
- Grit contamination in tank internals from wind-blown dust. Santa Ana winds drive fine dust through bathroom vent louvers. That grit settles into toilet tanks and chews at valve seals over time, shortening the life of otherwise healthy Toto components.
Toto Service in Moreno Valley: What Local Conditions Mean for Your Equipment
Here’s a fact that would not be equally true in Riverside, Corona, or Temecula. In Moreno Valley’s west-side tracts, specifically the 92553 and 92557 ZIPs near the 60 freeway, the same Santa Ana wind events that loosen roof tiles drive fine dust through bathroom vent louvers all year. That dust coats Toto Washlet sensors and toilet tank interiors with a fine grit that accelerates valve wear and seat-sensor failures. We find this in older homes along streets like Perris Boulevard and Fir Avenue, where decades of wind have scoured the stucco and left bathroom vents pulling in more particulates than anywhere else in the city. When we open a Toto tank in those neighborhoods, the bottom of the tank often has a thin silt layer. That grit gets into the fill valve diaphragm and the flush tower seal, which is why valves here fail years earlier than the same model in a coastal city. The fix is addressing the real local variable, not just swapping parts: proper vent louvers, a quality tank-to-bowl kit, and in some homes, a point-of-use filter on the supply line feeding the Washlet.
Toto Models & Products We Service in Moreno Valley
We install and repair the full range of Toto fixtures common in Moreno Valley homes. The Eco Drake, with its elongated bowl and 1.28 gpf flush, is the workhorse we see most often in 1980s and 1990s tracts. The Ultramax II turns up in newer master baths and higher-end remodels. Washlet S-series and C-series bidet seats are increasingly common additions to Moreno Valley remodels, especially in homes off the 60 corridor. The Aquia IV, with its dual-flush system, shows up in more contemporary additions and ADUs. We stock genuine Toto fill valves, flush towers, and Washlet nozzles for exact-fit repairs, and we’ll use quality aftermarket seals and supply lines where they meet or exceed OEM specs. If a Washlet’s electronics or a toilet’s porcelain are compromised, we’ll tell you straight when a targeted repair makes sense versus replacing the fixture.
See the difference
Before
After
Before
After
Before
AfterToto Service Pricing in Moreno Valley
Toto service in Colton and Moreno Valley depends on the scope: a simple fill valve replacement costs far less than a full bathroom remodel that includes a new Toto fixture, shower, and vanity. Here are our most common Toto-related project ranges:
| Toto Service Scope | Typical Range in Moreno Valley |
|---|---|
| Bathroom Remodel (including Toto fixture replacement) | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives the final number is whether we’re replacing a single valve and seal or pulling the toilet to inspect the flange, rebuilding the shower pan, and relocating a drain. A free estimate from us includes a full look at what failed, what caused it, and what it costs to fix so it stays fixed. Call (877) 688-9930 to schedule yours.
Serving Moreno Valley, CA — Our Local Coverage Area
We’re based in the Moreno Valley 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 Moreno Valley
Hard-water scale is almost always the culprit in Moreno Valley and Toto in Loma Linda. The mineral deposits clog the small orifices in the Toto Washlet spray nozzle until the stream loses pressure or angles off target, and many people mistake that for a failed pump. We clean or replace the nozzle assembly, and if the scale is severe, we’ll discuss a point-of-use filter so it doesn’t return. Call (877) 688-9930 for an exact diagnosis and a free estimate.
That’s classic ghost flushing, and in Moreno Valley it’s usually a heat-fatigued fill valve or a worn flush tower seal. The hot inland air cycling through second-story bathrooms warps the original valve components over time, and the toilet cycles to compensate for the slow water loss. We replace the failing part with a genuine Toto or quality aftermarket part, and the running stops. If you’re hearing it right now, call us at (877) 688-9930.
Yes. The Washlet seat is a separate component from the toilet bowl and tank, so if the seat electronics fail or the nozzles are beyond cleaning, we can install a new Washlet S-series or C-series seat on your existing Toto toilet. We’ll also check whether the failure came from humidity or electrical supply issues, so the replacement doesn’t die the same way. Estimates are free at (877) 688-9930.
Usually, yes. The Eco Drake’s porcelain is durable, and the common failures, fill valves, flush towers, and tank-to-bowl seals, are all replaceable. In fact, on a 1990s tract home off Perris Boulevard in the 92553 ZIP, our crew found a Toto Eco Drake ghost-flushing because the fill valve had warped from years of attic heat cycling and the tank bolt seals were weeping onto the tile. We swapped in a genuine Toto fill valve and a new tank-to-bowl kit, re-seated the toilet with a fresh wax ring, and the homeowner hasn’t heard it run since. When the porcelain is cracked or the flange under the toilet is damaged, that’s when we’ll talk replacement. Call (877) 688-9930 to have us assess yours.
Yes, and this is where our general contractor scope matters. We handle the full bathroom remodel under one contract, including Toto toilet and Washlet installation, walk-in showers, tile, and vanity work. That means one team manages the plumbing, waterproofing, and finish work from demo to trim, so you’re not coordinating a plumber, a tile setter, and an electrician yourself. Call (877) 688-9930 for a free estimate on your remodel.
Service Areas Near Moreno Valley
We serve the communities around Moreno Valley and beyond, including Moreno Valley service area coverage across all four ZIP codes, plus nearby communities like Corona, Norco, and Montclair. For Toto owners to the south, see Toto service in Sun City. Up in the high desert, we also offer Toto service in Wrightwood.
Book Your Toto Service in Moreno Valley Today
If your Toto is running, leaking, or spraying wrong, don’t wait for a small seal to become a rotted subfloor. Call (877) 688-9930 to schedule your free estimate. We’ll diagnose the real problem and give you a straight answer on the fix for your Moreno Valley home.
Written by Brent Calloway, Owner & General Contractor at Square One Builders, serving Moreno Valley and the Inland Empire since 2005. Start from square one, build it right.