Professional Toilet Repair Services in Denver
Most toilet calls fall into three groups: a toilet that runs, leaks or won’t flush properly and can be repaired; a toilet that is cracked, worn out or too wasteful and should be replaced; and a new toilet someone wants installed, often during a bathroom remodel or a rental turnover. We handle all three.
Many problems come from a handful of parts inside the tank, which holds the water for each flush. Others come from the connection between the toilet and the floor, which is a wax ring seal and a metal or plastic flange that anchors the toilet. We look at the whole system before recommending anything, so you pay for the fix your toilet needs and not the one that is easiest to sell.
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Our Toilet Repair Services
Running Toilet Repair
If water keeps trickling into the bowl after you flush, the tank is losing water somewhere. The usual cause is a worn flapper, the rubber seal at the bottom of the tank that lifts when you flush and drops back to stop the water. A flapper that is warped, brittle or caught on its chain lets water leak slowly into the bowl, and the fill valve keeps topping up the tank. Other causes include a fill valve set too high, so water spills into the overflow tube, and a handle that sticks. Replacing the flapper or adjusting the fill valve fixes most running toilets. A quick check: put a few drops of food coloring in the tank, wait 15 minutes without flushing, and if color shows up in the bowl, the flapper is leaking.
Toilet Leak Repair
Water on the floor can come from several places, and the fix depends on which. Drips at the wall usually point to the supply line or shut-off valve. Water between the tank and bowl suggests worn bolts or gaskets. Sweating on the outside of a cold tank looks like a leak but is condensation. We find the source first, because replacing the wrong part wastes money and the leak returns.
Clogged Toilet Repair
A plunger clears most single clogs. If a toilet clogs again within days, the cause may be something lodged in the trapway, the curved channel inside the bowl, or a partial blockage in the drain line behind it. We can clear stubborn toilet clogs and tell you whether the problem is the toilet or the line. If it is the line, we can continue with our drain cleaning service. Please keep chemical drain cleaners out of a toilet, because they can damage the fittings and are unsafe for anyone who works on the drain afterward.
Toilet Flush and Fill Valve Repair
A weak or incomplete flush usually traces to low water in the tank, a flapper that closes early, clogged rim holes under the bowl’s rim, or a partial clog. A hissing sound after flushing, or a tank that never stops refilling, often means a worn fill valve. A handle that feels loose or does nothing may only need a new handle or chain. These are small parts, and replacing them restores normal operation for much less than a new toilet.
Toilet Tank and Bowl Repair
Hairline cracks can leak slowly or break open under use. Cracks in the bowl or tank cannot be sealed reliably with a repair, so these usually mean replacement. Loose tank bolts, worn gaskets and failed seals between the tank and bowl, on the other hand, are repairable.
Base Leaks, Rocking Toilets and Flange Repair
Water or a sewer smell at the base of the toilet often means the wax ring has failed. A toilet that rocks may have loose closet bolts, an uneven floor or a damaged flange. If the flange is cracked or sits too low, the toilet cannot seat properly and the wax ring will not hold. We pull the toilet, inspect the flange and floor, replace the seal and reset the toilet. A leak at the base should not be left, because water can soak into the subfloor.
Toilet Installation and Replacement in Denver
New Toilet Installation
Installing a toilet involves more than swapping the fixture. We shut off the water, drain the tank and remove the old toilet, then check the flange and the shut-off valve. A new wax ring or seal goes in, the toilet is set level and bolted down, and the supply line is connected. Then we flush it, check every joint for leaks, and confirm the toilet does not rock. If you have already bought a toilet, we can install it. Check the rough-in distance, which is the measurement from the wall to the center of the drain, before you buy, because a toilet that does not match will not fit.
High-Efficiency and Dual-Flush Toilets
Newer toilets use far less water per flush than older models. Dual-flush toilets give you two flush options for liquid and solid waste. Low-flow and high-efficiency toilets are designed to flush well on less water, and a well-chosen model can reduce your water use. We can install them and talk through the options for your bathroom.
Bathroom Toilet Replacement
Replacing an old toilet makes sense when the bowl or tank is cracked, repairs keep repeating, or you are remodeling. We remove and dispose of the old toilet, prepare the flange and floor, and install the new one. If the flange or the shut-off valve is corroded, we will tell you before we start.
Common Toilet Problems and What Causes Them
- Toilet keeps running. Worn flapper, high fill valve or a sticking handle.
- Water at the base. Failed wax ring, loose bolts or a damaged flange.
- Tank keeps refilling. Leaking flapper or a faulty fill valve.
- Weak or incomplete flush. Low tank water, clogged rim holes or a partial clog.
- Frequent clogs. A blockage in the trapway or the drain line, or an older low-flow model.
- Hissing or noises. Fill valve wear or water pressure problems at the valve.
- Rocking toilet. Loose bolts, uneven floor or flange damage.
- Cracks in the tank or bowl. Impact, age or temperature changes. Replacement is usually the answer.
Should You Repair or Replace Your Toilet?
Repair usually makes sense when one inexpensive part has failed, such as a flapper, a fill valve or a seal. Replacement is the better choice when:
- The tank or bowl is cracked
- The same problem keeps coming back after repairs
- Parts are no longer available
- The toilet clogs often even when the drain line is clear
- The repair would cost close to a new toilet
- You want a more water-efficient or a more comfortable model
If you have paid for the same repair twice in a year, a new toilet will often cost less over time.
Our Toilet Repair and Installation Process
- You call or request an estimate and tell us what the toilet is doing.
- We discuss the symptoms and what you have already tried.
- We inspect the toilet, the supply line, the shut-off valve and the base.
- We explain your options, including repair or replacement.
- You get an estimate and approve it before work starts.
- We repair or install the toilet.
- We flush, test and check for leaks.
Toilet Repair and Installation Costs in Denver
We do not quote prices without seeing the job. What changes the cost:
- The type of toilet and its brand, size and features
- The parts needed, from a flapper to a new flange
- The condition of the shut-off valve, supply line and flange
- Whether the old toilet must be removed and hauled away
- How easy the toilet is to reach
- Any floor or drain repairs found once the toilet is pulled
Tell us what you need and we will give you an estimate for your bathroom.
Residential and Commercial Toilet Plumbing
We repair and install toilets in homes, rentals and multi-unit properties. Commercial restrooms often use different fixtures, such as flushometer valves and wall-mounted bowls, and need work scheduled around business hours. If you manage a property, tell us how many toilets are involved and we will plan the visit.
Why Choose Professional Plumbers Denver?
- A straight answer on repair or replace. We tell you when a cheap part will do the job.
- Estimates before work. You approve the cost first.
- More than toilets. If a toilet problem involves the drain or a pipe, the same team handles it.
- Licensed and insured.
- Experience. Serving Denver since 2005.
- Availability. Open 24/7 for plumbing emergencies.
Areas We Serve Around Denver, Colorado
We provide toilet repair and installation in Denver and nearby communities, including Aurora, Lakewood, Englewood, Littleton, Centennial, Highlands Ranch, Castle Rock, Glendale and Greenwood Village. Not sure we cover your address? See our service areas page or call us.
Frequently Asked Questions About Toilet Repair
It depends on the part and the job. A small repair such as a flapper or fill valve costs far less than a new flange or a replacement toilet. We give an estimate after we see the toilet. For general reference, Angi's national guide lists about $374 for a toilet installation on average (typically $224 to $533) and $50 to $200 for a wax ring replacement, as of its August 2024 update. Those are not our prices.
The most common cause is a worn or misaligned flapper that lets water leak from the tank into the bowl. A fill valve set too high or a sticking handle can do the same. Add a few drops of food coloring to the tank and wait 15 minutes: if color reaches the bowl, the flapper is leaking.
The usual cause is a failed wax ring or a loose or damaged flange. Loose closet bolts, a cracked toilet or a leaking supply line can also leave water on the floor. Stop using the toilet, shut off the water at the valve, and call us before the subfloor soaks through.
Yes. If a plunger has not worked, or the toilet keeps clogging, a plumber can clear the blockage and check whether the trapway or the drain line is the problem. We avoid chemical drain cleaners in toilets.
Replace it when the tank or bowl is cracked, repairs keep repeating, parts cannot be found, or the repair would cost close to a new toilet. One inexpensive part, such as a flapper, is worth repairing.
Yes, we can install a toilet you have bought. Check the rough-in distance (wall to drain center) before you buy, and the seat and shut-off valve fit.
Yes. Low-flow, high-efficiency and dual-flush toilets install the same way as standard models, and we can talk through which suits your bathroom.
A hiss usually means the fill valve is worn or the tank is slowly leaking, so the valve keeps trying to refill it. It rarely fixes itself. Replacing the fill valve is a common repair.
It depends on the toilet type, the condition of the flange and shut-off valve, and whether the old toilet must be removed. A straightforward replacement is a shorter visit than one that uncovers floor or flange damage. We can give you an idea when you call.
Yes, we work on toilets in rental, multi-unit and commercial properties. Tell us the building type and the number of toilets and we will plan the visit.
Contact Professional Plumbers Denver
If your toilet is running, leaking or just worn out, tell us what is going on and we will recommend the next step. Call (720) 390-2652 for toilet repair in Denver, schedule a toilet installation, or request a toilet replacement estimate through our contact page. Professional Plumbers Denver, 4400 S Quebec St, Suite 208, Denver, CO 80237.
