"Called about a constantly running toilet and phantom flushes. The plumber found a broken brass flange and deteriorated seal. Replaced the toilet with a WaterSense high-efficiency unit that qualifies for local utility rebates. Quick, clean, and priced right."
Toilet Repair & Installation in Fort Collins, CO
Star Plumbing Co. LLC delivers expert toilet repair, replacement, and installation across Fort Collins and Larimer County. We fix running toilets, faulty fill valves, worn flappers, leaking wax seals, and stubborn clogs. We also install customer-supplied fixtures with haul-away included; view toilet repair costs. For sewage overflows, contact our 24/7 emergency plumber or request bathroom fixture repairs on the same visit.
Why Fort Collins Homeowners Call Star Plumbing
Expert diagnostics, flat-rate pricing, and guaranteed repairs backed by licensed local plumbers.
Prompt Local Dispatch & Clean Service
From active overflows to wasteful phantom flushes, our fully stocked service vans resolve toilet issues quickly. Our technicians complete most repairs or resets in a single visit.
- check_circle Same-Day & Emergency Scheduling Across Fort Collins
- check_circle OEM Parts for Kohler, TOTO, American Standard, Mansfield & More
Upfront Flat Pricing
We provide written quotes before work begins. No hidden overtime fees, no surprise add-ons on your invoice.
Subfloor Protection
We replace degraded wax rings and inspect subfloor decking to prevent rot and structural damage.
Water Bill Savings
Fixing a silent internal leak can save 200+ gallons of wasted water daily on your utility bill.
Customer Fixtures Installed
Already bought a toilet? We install customer-supplied fixtures with complete leak testing.
Signs You Need Toilet Repair in Fort Collins
Catching toilet problems early prevents costly bathroom subfloor rot and expensive water damage.
1. Continuous Running or "Phantom Flushes"
Worn flapper valve, misaligned fill valve, or float arm set above the overflow tube.
2. Water Pooling at the Toilet Base
Failed wax ring seal or cracked closet flange leaking water during the flush cycle.
3. Toilet Rocks, Shifts, or Wobbles
Loose closet bolts, uneven subflooring, or a broken flange breaking the watertight seal.
4. Persistent Sewer Smell in Bathroom
Broken seal beneath the toilet allowing sewer gas to seep past the trapway into living spaces.
5. Weak, Sluggish, or Incomplete Flush
Clogged siphon jets from hard water scale, partial line obstruction, or low water volume.
Common Toilet Problems Solved
We diagnose the root mechanical or drainage cause so your toilet works reliably every single flush.
Leaking Base & Subfloor Seepage
Water seeping around the toilet base after flushing destroys tile, drywall, and wood joists below.
Toilet Pull, Flange Repair & Reset: We safely pull the toilet, rebuild damaged flange collars, install heavy-duty reinforced wax seals, and anchor solid.
Chronic Running & Tank Leakage
Constant hissing water fills the overflow pipe, running up hundreds of dollars in water bills annually.
Complete Internal Rebuild: We replace worn flappers, install high-flow anti-siphon fill valves, replace tank-to-bowl gaskets, and calibrate water levels.
Severe Trap & Branch Line Clogs
Toilet threatens to overflow on every flush due to foreign objects or heavy wipes lodged in the trapway.
Professional Closet Augering & Snaking: We clear traps without scratching porcelain or snake 3-inch branch lines. If waste actively overflows, shut off the angle stop immediately. Contact our emergency plumbing dispatch. Review our guide on what counts as a plumbing emergency.
Worn Flapper & Faulty Fill Valve
A toilet that cycles randomly or constantly fills the overflow pipe wastes up to 200 gallons daily. Degraded flapper seals or defective valves cause this issue.
Flapper & Fill Valve Overhaul: We test flush valve seals and install durable silicone flappers. We also install anti-siphon fill valves and calibrate tank floats.
Clogged Toilet? Fast Unclogging Service in Fort Collins
A clogged toilet threatening to overflow requires immediate plumbing attention. Whether dealing with partial drain blockages or complete trapway stoppages, our plumbers clear obstructions quickly. We restore full flushing power without damaging delicate porcelain finishes.
- check_circle Stubborn clogs cleared with professional closet augers — no porcelain scratching
- check_circle Recurring backups diagnosed and resolved at the root cause, not just the symptom
- check_circle Branch line snaking for clogs beyond the toilet trap affecting other bathroom fixtures
- check_circle Overflow prevention — if sewage is actively overflowing, call our emergency plumber immediately
Don't wait for a minor clog to turn into a sewage backup. Call (970) 499-0516 for same-day unclogging service across Fort Collins, Loveland, and Berthoud.
Tools and Methods We Use
We use specialized plumbing tools that protect your bathroom fixtures while guaranteeing a watertight, level install.
build Specialized Equipment
Heavy-Duty Protective Closet Augers
Clears obstructions through the internal trapway with zero porcelain scratching.
Digital Torpedo Levels & Shims
Ensures 100% stable seating on uneven tile to prevent rocking and broken seals.
Stainless Flange Repair Rings
Reconstructs cracked PVC or cast iron closet flanges without tearing up flooring.
engineering Technical Standards
UPC Trapway & Vent Compliance
Verifies vent stack airflow to ensure proper atmospheric pressure and trap refill.
Braided Stainless Supply Lines
Replaces aging rigid plastic lines with burst-proof braided stainless lines.
Pressure & Dye Flush Testing
Validates flapper seal integrity and shut-off valve responsiveness before leaving.
Real Toilet Repair & Installation Reviews from Northern Colorado Homeowners
Authentic customer feedback from homeowners across Fort Collins, Loveland, Windsor, and Northern Colorado.
"Noticed a slight wobble and dampness around the base of our second-floor toilet. Star Plumbing pulled the toilet, rebuilt the rotten cast iron flange with a stainless steel collar, and reset with a heavy-duty wax ring. Rock solid now."
"Kids flushed a toy down the toilet causing a stubborn trap blockage. Star Plumbing retrieved it without scratching the porcelain bowl in 20 minutes. Friendly, polite, and reasonable fee."
Should You Repair or Replace Your Toilet?
We don't push unnecessary fixture replacements. For a detailed breakdown of costs and homeowner considerations, check our guide on when to repair or replace your toilet.
When Repair Makes Sense
- check_circle The porcelain tank and bowl are free of cracks and chips
- check_circle The issue is an internal mechanical part (flapper, fill valve, float, handle)
- check_circle The toilet is less than 10–15 years old with modern 1.28 or 1.6 GPF rating
- check_circle Repair cost is a small fraction of a new fixture install
When Replacement Makes Sense
- warning The tank, bowl, or trapway has structural porcelain hairline cracks
- warning The toilet is an outdated 3.5+ GPF model driving up Fort Collins water bills
- warning Internal siphon jets are permanently clogged with hard water mineral scale
- warning You're upgrading aesthetics or comfort (chair height, elongated, bidet seat)
Fort Collins Water Conservation Rebates
Upgrading an older high-consumption toilet to a high-efficiency EPA WaterSense model (1.28 GPF or lower) can qualify Fort Collins Utilities customers for conservation rebates. We help you choose compliant models that save water without sacrificing flushing power.
Toilet Repairs & Installations We Handle
From minor part swaps to full multi-bathroom fixture upgrades, we handle every aspect of toilet plumbing:
Toilet Flapper & Fill Valve Repair
A continuously running toilet is almost always a worn flapper or failing fill valve. We install heavy-duty universal rebuild kits and OEM parts that stop phantom flushing and save water.
Wax Ring & Flange Reset
Pulls rocking toilets, repairs broken floor flanges, installs fresh watertight seals, and shims level.
Trap & Drain Clog Removal
Clears stubborn blockages, foreign objects, and wipe buildup using heavy-duty closet augers and snakes.
Supply Line & Shutoff Valves
Replaces stuck or corroded quarter-turn emergency stop valves and upgrades to braided stainless supply hoses.
New Toilet Installation
Complete installation of new high-efficiency, comfort-height, or dual-flush toilets including haul-away.
Bidet & Smart Seat Installs
Adds integrated bidet seats, T-valves, dedicated electrical coordination, and luxury washlet fixtures.
Bathroom Plumbing Repair in Fort Collins — Toilet, Sink & Shower
A toilet issue is rarely isolated. Star Plumbing Co. provides complete bathroom plumbing services. We inspect and repair toilets, sinks, and showers during a single visit. This comprehensive approach avoids scheduling multiple service calls.
Toilet Repair & Replacement
Running tanks, leaking bases, rocking bowls, weak flushes and stubborn clogs. Rebuild kits, wax ring resets, closet flange repair and full fixture replacement — the core of what this page covers.
Bathroom Sink & Faucet Repair
Dripping faucets, corroded pop-up assemblies, leaking P-traps, slow-draining basins and cracked tailpieces. We re-seat vanity drains, replace cartridges and swap out failed angle stops on the same call as your toilet work.
Shower & Tub Repair
Need a plumber to fix a shower? We rebuild leaking shower valves and worn pressure-balance cartridges. Technicians repair dripping tub spouts and clear sluggish shower drains before backups occur.
Complete Bathroom Plumbing & Fixture Installation
Remodeling or updating a bathroom? We manage all fixture installations: leveling toilet flanges, plumbing vanity drains, and installing shower valves. Every connection is pressure-tested to ensure Larimer County code compliance. Pairing toilet and vanity installations saves you a second trip charge.
- check_circleNew toilet, sink and vanity fixture installation
- check_circleShower and tub valve replacement
- check_circleBathroom drain, trap and vent corrections
- check_circleAngle stop and supply line upgrades
- check_circleBidet seat and washlet plumbing
- check_circleHalf-bath and powder room additions
One bathroom or five, call (970) 499-0516 and we will scope the whole room on a single visit.
Bidet & Smart Seat Installation in Fort Collins
Bidet seats and washlets are the most common toilet upgrade we install in Northern Colorado, and they are not always a simple bolt-on. Star Plumbing Co. installs bidet attachments, full washlet seats and standalone bidet fixtures with the plumbing and electrical coordination done properly the first time.
- check_circleT-valve and supply tee installed on the fill line with a dedicated shutoff, not a plastic saddle fitting
- check_circleBowl fit verified for round vs. elongated shape and seat-post spacing before we order or open the box
- check_circleGFCI outlet coordination for heated, electric washlet models that need power beside the toilet
- check_circleHot-water tie-in where the model supports tempered supply rather than cold-only spray
- check_circlePressure and leak testing on every new joint, plus a walkthrough of the controls before we leave
Already bought the unit? We install customer-supplied bidets and washlets. Bidet seat installation typically runs $185 – $425 depending on whether an outlet and hot-water tie-in are needed. Call (970) 499-0516.
Pairing a Bidet with a New Toilet
If replacing an older toilet, installing a bidet seat simultaneously saves time and labor costs. We configure the water supply line, T-valve, and seat in one appointment. Our plumbers verify washlet compatibility before you purchase fixtures.
Not sure whether to repair, replace or upgrade? Read our guide on toilet repair vs. replacement, or review the cost ranges above.
What You Can DIY vs. When to Call a Plumber
Some toilet fixes are simple DIY tasks for handy homeowners. Others risk severe water damage if done incorrectly:
check_circle Reasonable DIY Tasks
- done Swapping a basic rubber tank flapper ($5–$15 part)
- done Adjusting the float arm height or chain length
- done Plunging a fresh, minor soft clog with a flange plunger
- done Replacing an external toilet seat or decorative lid
build When to Call a Licensed Plumber
- arrow_forward Wax ring replacement & closet flange repairs
- arrow_forward Deep clogs that plunge back into bathtubs or sinks
- arrow_forward Any active leak at the base, floor seal, or tank bolts
- arrow_forward Full toilet removal, rough-in adjustments & resets
How Much Does Toilet Repair or Installation Cost in Fort Collins?
Most toilet repairs in Fort Collins land between $145 and $385, and a standard toilet installation runs $275 to $550 plus the fixture. The exact number depends on which part failed, whether the closet flange needs rebuilding, and how accessible the shutoff valve is. Below are the typical ranges we quote — you get a written flat-rate price before any work starts.
| Toilet Service | Typical Range |
|---|---|
| Flapper, fill valve, or flush handle replacement | $145 – $225 |
| Full tank rebuild kit (running toilet, phantom flush) | $185 – $295 |
| Clogged toilet cleared with closet auger | $150 – $275 |
| Wax ring reset & re-level (leaking or rocking base) | $225 – $385 |
| Closet flange repair or full flange replacement | $325 – $650 |
| Toilet installation / replacement (labor, haul-away included) | $275 – $550 |
| Bidet seat or washlet installation | $185 – $425 |
| Supply line & angle stop shutoff valve replacement | $165 – $285 |
What Changes the Price
- arrow_rightFlange condition. A cracked or below-grade cast iron flange in an older Old Town home adds labor a simple wax ring reset does not.
- arrow_rightRough-in and clearance. Non-standard 10" or 14" rough-in distances and tight powder rooms take longer to set and seal.
- arrow_rightHard water scale. Northern Colorado mineral buildup can seize supply valves and clog siphon jets, turning a parts swap into a valve replacement.
- arrow_rightWhether the clog is past the trap. If the blockage is in the branch line rather than the toilet, it becomes a drain cleaning job.
- arrow_rightMultiple toilets at once. Replacing two or three fixtures in one visit lowers the per-toilet labor cost noticeably.
Looking for the cheapest way out of a toilet problem? Honest answer: on a toilet under 15 years old with intact porcelain, a repair almost always beats replacement. We will tell you which one you are looking at before you commit to anything. Ranges above are typical for Fort Collins and Larimer County — your written quote is confirmed on site.
What to Tell Us When You Call About a Toilet
Two details help us quote accurately: the specific symptom and whether you prefer repair or replacement. If you are unsure, our plumbers diagnose issues on site. Neither detail is required to book your visit.
The specific issue you're experiencing
Pick whichever of these is closest to your toilet. Each one points to different parts and a different length of visit:
- water_drop Clog — the bowl won't flush, drains slowly, or rises toward the rim. Tell us whether other fixtures (tub, sink) back up at the same time, and whether anything non-flushable went down. Most clogs are cleared on site with a closet auger — see clogged toilet service. If it's actively overflowing, lead with that; it goes to the front of the queue.
- autorenew Running water — the tank hisses, refills on its own ("phantom flush"), or never stops filling. Tell us whether it runs constantly or only in bursts. This is nearly always a flapper, fill valve, or float, and our vans carry all three plus universal rebuild kits.
- warning Leak — tell us where moisture appears: at the base, supply line, or tank bolts. Base leaks typically signal failed wax seals or cracked flanges. Leaks pooling onto floors demand prompt service to prevent subfloor rotting.
Also useful: roughly how old the toilet is, how long it has been doing this, and whether the shutoff valve behind it still turns. Match your symptom against the five most common signs if you want to narrow it down first.
Whether you need a repair or a full replacement
You do not need to decide between repair and replacement beforehand. If you already have a preference, let us know during booking. Our standard decision rule:
- build Repair if the porcelain is sound and the toilet is under roughly 15 years old. Running tanks, clogs, wax ring resets, flange repairs and supply valve swaps are all repairs — typically $145 to $425.
- swap_horiz Full replacement if the tank or bowl is cracked, it's a pre-1994 high-volume flusher, repairs are stacking up, or you want a WaterSense upgrade. Labor runs $275 to $550 plus the fixture, haul-away included.
- help Not sure? Book your appointment as a repair call. We inspect the fixture on site and present transparent flat-rate prices before disassembly.
Supplying your own fixture? Mention the brand and model so we can confirm the 10", 12" or 14" rough-in before we arrive. More detail in repair vs. replace, the cost table, and our Fort Collins repair-or-replace guide.
Our Simple 6-Step Toilet Service Process
From initial call to clean flush testing, here is how we handle your toilet repair:
1. Call Us
Tell us the issue (clog, running, leak) and whether you want repair or replacement.
2. Diagnosis
We inspect the tank, trapway, flange, and supply.
3. Written Quote
Upfront flat-rate pricing with zero hidden fees.
4. Approval
You authorize the work before we begin.
5. Expert Repair
Clean, professional repair or replacement.
6. Leak Test
Thorough flush testing and clean job site.
Proudly Serving Fort Collins & Northern Colorado
Fast, reliable local plumbers ready to dispatch across Fort Collins neighborhoods — including English Ranch, Rigden Farm, Old Town, and City Park — and regional communities.
Serving Fort Collins ZIP codes: 80521, 80524, 80525, 80526, 80528, 80553.
Fort Collins Toilet Repair Questions & Guidance
Clear, honest answers to toilet leaks, running tanks, and replacement considerations in Fort Collins and Northern Colorado.
help_outline Who Do I Call for a Running or Leaking Toilet in Fort Collins?
Call Star Plumbing Co. at (970) 499-0516 for fast toilet repairs in Fort Collins. Running toilets usually stem from worn flappers or faulty fill valves. A running toilet wastes up to 200 gallons daily. Our plumbers arrive with universal rebuild kits to complete repairs in one visit.
help_outline Should I Repair My Toilet or Replace It with a New Model?
Simple mechanical issues like worn flappers or broken fill valves warrant quick repairs. However, cracked porcelain or frequent clogging warrants fixture replacement. Units over 20 years old benefit greatly from WaterSense upgrades. Modern high-efficiency toilets deliver powerful flushes while lowering water bills.
help_outline Why Is Water Leaking Around the Base of My Toilet?
Water around the toilet base indicates a failed wax ring or loose closet bolts. Wastewater escapes beneath the bowl with every flush. Unaddressed leaks rot bathroom subflooring and ruin ceilings below. Our licensed plumbers pull the fixture, inspect the flange, and set a durable seal.
help_outline Who Installs Toilets Near Fort Collins?
Star Plumbing Co. provides professional toilet installation across Fort Collins and Larimer County. We haul away old fixtures and level the existing closet flange. Technicians install heavy-duty reinforced wax seals and stainless steel braided supply lines. Every installation undergoes thorough testing to guarantee leak-free operation.
Toilet Replacement in Wellington, Windsor & Outlying Towns
Star Plumbing Co. operates from 419 N Meldrum St in Fort Collins. We dispatch toilet repair calls across Northern Colorado communities. Our service area includes Loveland, Wellington, Windsor, and Berthoud. We also serve Greeley, Laporte, Timnath, Severance, and Estes Park.
Toilet Replacement in Wellington & Windsor
Many Wellington and Windsor homes were built in the late 1990s and 2000s. Original 1.6 GPF toilets now exhibit seized fill valves and scaled siphon jets. Flanges frequently sit below newer finished tile. We carry repair rings and replacement fixtures on our service trucks.
Hard Water & Older Fort Collins Homes
Northern Colorado hard water causes mineral scale on flappers and fill valves. Shutoff angle stops behind toilets frequently seize from mineral buildup. Older homes in Old Town often feature corroded cast-iron closet flanges. We inspect flanges and install stainless repair rings on site.
Toilet Repair & Installation FAQs — Fort Collins, CO
My toilet keeps running or has water around the base — do I need a plumber?
Running water and base leaks require prompt professional repair to prevent damage. Running toilets waste up to 200 gallons daily from worn flappers or fill valves. Base leaks indicate failed wax seals that rot subflooring. Our plumbers complete valve replacements and wax ring resets in one visit.
How much does toilet repair cost in Fort Collins?
Toilet repair costs range from $145 for basic component fixes to $425 for flange resets. Flapper or fill valve replacements represent quick, economical repairs. Resetting rocking bowls with new wax seals requires moderate labor. Full fixture replacements depend on your chosen model, backed by upfront written estimates.
My toilet runs constantly — does it need to be replaced?
Usually not. A constantly running toilet is almost always a flapper, fill valve, or float adjustment issue — all repairable parts. We assess what's causing the running first and repair it. Replacement is only the recommendation when the toilet itself has a structural issue like a cracked tank or bowl.
Can you install a toilet I already purchased?
Yes. We install customer-supplied toilets. Just let us know what you have when you call so we can confirm the rough-in distance and any fitting considerations before we arrive.
What information should I have ready when I call a plumber about a toilet?
Provide the specific symptom and your preference between repair or replacement. Symptoms include clogs, running water, or leaks around bases. Mention the toilet's approximate age and whether the shutoff valve turns smoothly. We diagnose problems on site and provide upfront flat-rate pricing.
Do I need a toilet repair or a full replacement?
Repair is recommended for intact toilets under 15 years old. Rebuilding fill valves, clearing clogs, or resetting wax seals typically costs $145 to $425. Full replacement makes sense for cracked porcelain or inefficient pre-1994 fixtures. We inspect fixtures on site and provide written pricing for both options.
How do I know if my toilet has a wax ring problem?
Failed wax rings cause water pooling around toilet bases after flushing. Secondary indicators include rocking bowls, sewer odors, or spongy bathroom flooring. Leaving wax leaks unaddressed rots structural subflooring and ruins ceiling drywall below. Our technicians pull fixtures promptly to rebuild flanges and install heavy-duty seals.
How much does it cost to install a new toilet in Fort Collins?
Standard toilet installation labor typically runs between $275 and $550. Installation includes hauling away old units, leveling closet flanges, and setting reinforced wax seals. We connect braided stainless supply lines and perform pressure leak testing. Rebuilding damaged flanges or seized shutoff valves entails modest additional labor.
Do you unclog toilets, or only repair and replace them?
Yes, we provide fast toilet unclogging services using heavy-duty closet augers. Augering clears stubborn clogs without scratching porcelain finishes for $150 to $275. If blockages extend beyond traps into main branches, we provide camera-guided drain cleaning. For overflowing toilets, call our emergency plumber line immediately.
What's the cheapest way to fix a toilet problem?
Repairing an intact toilet under 15 years old is almost always cheapest. Replacing worn flappers or fill valves starts around $145, compared to $275+ for replacements. Delaying repairs is costly: leaking wax rings rot subfloors, and running toilets waste water. We evaluate your fixture on site and present honest recommendations.
Can you fix my bathroom sink or shower on the same visit as the toilet?
Yes, our licensed technicians service sinks, showers, and faucets on the same visit. If your vanity faucet drips or shower valves need cartridges, let us know when scheduling. Servicing multiple bathroom fixtures during one visit eliminates extra dispatch charges. Explore our dedicated faucet & sink repair page for fixture details.
Do you install bidets and smart toilet seats?
Yes, we install bidet attachments, washlet seats, and standalone fixtures. Complete installation typically runs $185 to $425 depending on electrical and plumbing requirements. We install durable brass T-valves with dedicated shutoffs on the water supply line. Plumbers verify bowl shape compatibility and pressure-test all fittings thoroughly.
Do you handle toilet repair and replacement outside Fort Collins?
Yes, we dispatch toilet repair calls throughout Larimer and western Weld counties. Our regional service area covers Loveland, Wellington, and Windsor. We also serve Berthoud, Greeley, Laporte, Timnath, Severance, and Estes Park.
How quickly can a plumber get here for a toilet problem?
We offer same-day scheduling across Fort Collins for most toilet repairs. Our service vans carry flappers, fill valves, rebuild kits, wax rings, and flanges. Most repair calls are resolved completely in a single visit without delays. Active overflows receive priority emergency dispatch: call (970) 499-0516 anytime.