Toilet Repair & Installation
in the Bay Area
Running toilet, leak or stubborn clog? Our licensed plumbers repair and replace toilets across Santa Clara and San Mateo counties. Same-day appointments when available, upfront pricing and 24/7 emergency support.
Reviews Across Platforms
Licensed & Insured
CA Licensed
Same-Day Service
24/7 Emergency
Since 2019
Serving the Bay Area
14 000+
Customers Served
Professional Toilet Repair, Installation & Replacement
A toilet that keeps running, leaks onto the bathroom floor or flushes poorly can be frustrating, but not every problem requires a new fixture. United HVAC, Plumbing & Electrical provides toilet repair, installation and replacement services across Santa Clara and San Mateo counties.
Our plumbers check whether the issue comes from the tank components, water supply connection, floor seal or drainage system. Once the cause is identified, we explain the repair options and any conditions that could affect the work.
Running Toilets and Flushing Problems
A toilet that continues running or refills between flushes may have a worn flapper, faulty fill valve, damaged flush seal or incorrect tank water level.
We inspect the flushing mechanism, identify the affected components and check that the tank refills and shuts off correctly after the repair.
Weak flushing can also result from a partial blockage or restricted water flow through the fixture. Correcting the underlying problem is more useful than repeatedly adjusting the flush handle.
Toilet Leaks and Damaged Seals
Water around the base of a toilet does not automatically mean the wax ring has failed. Leaks can originate from the supply line, shut-off valve, tank bolts, gaskets or the toilet-to-drain connection.
A toilet that rocks or shifts may have loose mounting bolts, a damaged closet flange or problems with the surrounding floor. The connection should be inspected before installing a new seal or securing the fixture again.
If moisture appears to come from concealed plumbing rather than the toilet itself, additional leak detection may be appropriate.
Clogged Toilets and Recurring Backups
Some toilet clogs are confined to the fixture’s internal trap. Others result from a restriction farther along the connected drain line.
We assess the symptoms and determine whether the toilet needs a localized obstruction removed or the drainage system requires further attention.
If several fixtures drain slowly or wastewater backs up into a shower or bathtub, professional drain cleaning may be necessary. A sewer camera inspection can help investigate recurring backups or suspected pipe damage, but it is not needed for every toilet clog.
How It Works
Describe the Problem
Tell us whether your toilet is leaking, running, clogging or ready for replacement.
Inspect the Toilet
We check the tank, supply connection, floor seal and drain to identify the cause.
Review Your Options
We explain the recommended repair or replacement and provide an estimate before work begins.
Repair, Install & Test
After the approved work, we check for leaks, proper flushing and secure installation.
New Toilet Installation and Replacement
Replacing a toilet involves more than connecting a new fixture to the existing plumbing.
Before installation, we check the rough-in measurement, closet flange, shut-off valve, water supply connection and available bathroom space. These details help determine whether the selected fixture is compatible with the existing layout.
The installation may involve removing the old toilet, preparing the floor connection, fitting the new seal, securing the replacement fixture and testing for leaks and proper flushing.
If a damaged flange, leaking shut-off valve or deteriorated flooring is discovered, we explain how it affects the scope of the installation before additional work proceeds.
Choosing the Right Toilet for Your Bathroom
The right replacement depends on the bathroom layout, bowl shape, seat height and flushing requirements.
A round-front toilet may suit a smaller bathroom, while an elongated bowl can provide additional comfort where space allows. Comfort-height models may be easier to use for some households, but the appropriate height depends on individual needs.
If reducing water use is a priority, consider an EPA WaterSense-labeled toilet. These models are independently certified for water efficiency and flushing performance and use no more than 1.28 gallons per flush.
Repair or Replace Your Toilet?
Not every toilet problem calls for a replacement. Here's how to tell which option may make more sense.
Repair
Often the better choice when:
- The toilet keeps running
- A flapper, valve or gasket has failed
- The porcelain is intact
- The problem is localized
Replace
Worth considering when:
- The bowl or tank is cracked
- Problems keep returning
- Compatible parts are unavailable
- You're upgrading the fixture
How Much Does Toilet Repair or Installation Cost?
Toilet repair and installation costs depend on the problem, required parts and condition of the existing plumbing.
Replacing a tank component is generally a smaller job than installing a new toilet. The scope may increase if the plumber discovers a broken flange, damaged shut-off valve, persistent drain obstruction or deteriorated flooring.
For a new installation, ask whether the estimate includes removal of the old fixture, installation materials, additional connection repairs and disposal.
United HVAC, Plumbing & Electrical can assess the required work and provide an estimate based on the condition of your bathroom plumbing.
Still Having Toilet Problems?
Talk to our team about toilet repair or replacement.
When to Call for Toilet Service
The toilet continues running or refills when no one has flushed it.
Water appears around the base, tank or supply connection.
The fixture rocks, shifts or feels unstable.
Flushes are weak, clogs keep returning or wastewater backs up.
The tank or bowl has visible cracks or other damage.
If your toilet is overflowing, stop flushing. Close its water supply valve if it is safe to do so, and avoid using other fixtures if wastewater is backing up through the drains.
Toilet Repair and Installation Across the South Bay and Peninsula
United HVAC, Plumbing & Electrical serves homeowners in Santa Clara and San Mateo counties, including San Jose, Santa Clara, Sunnyvale, Cupertino, Mountain View, Palo Alto and nearby communities.
Call (408) 539-6936 to describe the issue and request an appointment.
100% Satisfaction Guarantee
If you're not completely satisfied with our work, we'll come back and make it right — free of charge. That's our promise to every customer.
Signs You Need Toilet Repair & Installation
A leaking or overflowing toilet should be addressed promptly to limit water damage. If several fixtures back up at the same time, the problem may involve the main drain rather than the toilet alone.
Got Questions?
Frequently Asked Questions
The cost depends on the type of repair, required parts and condition of the existing connections. Replacing a flapper or fill valve involves less work than installing a new toilet or repairing a damaged flange. An estimate should identify the intended work and any additional repairs.
Many toilet leaks can be repaired by replacing a seal, gasket or supply connection. Replacement becomes more appropriate when the porcelain is cracked, the fixture is badly damaged or repeated repairs are no longer practical. The source of the leak should be identified first.
A worn flapper, faulty fill valve or incorrect tank water level can allow water to keep flowing into the bowl. Sometimes the tank slowly loses water and refills even when nobody has flushed. A plumber can identify which component needs adjustment or replacement.
Possible causes include a failed floor seal, loose tank connections, leaking supply fittings or a damaged fixture. A rocking toilet can also compromise the connection to the drain. Water at the base should be traced to its source before the repair is selected.
Share the toilet's model and dimensions when requesting service so compatibility can be checked. The rough-in measurement, fixture dimensions, shut-off valve and existing drain connection can all affect installation requirements.
For a typical floor-mounted toilet, the rough-in is measured from the finished wall behind the fixture to the center of the drain connection. The replacement toilet must match the available rough-in and fit within the bathroom space.
Recurring clogs can result from an obstruction in the toilet trap, materials that should not be flushed or a restriction farther along the drain. When several fixtures are affected, the problem may involve the main drainage system rather than the toilet alone.
Stop flushing and, if safe, close the toilet's water supply valve. Do not force a stuck valve. Keep children and pets away from wastewater. If water is also backing up into a tub or shower, stop using other plumbing fixtures and request urgent drain service.
Related Services
Other Plumbing Services
Leak Detection
Advanced leak detection technology to locate hidden leaks and prevent water damage.
Water Pipe Repair
Expert water pipe repair and replacement to restore your plumbing system.
Faucet Installation
Professional faucet installation and replacement for kitchens and bathrooms.
Kitchen Sink Installation
Complete kitchen sink installation including plumbing connections and fixtures.
Shower Repair & Replacement
Shower repair and replacement services including valves, heads, and enclosures.
Toilet Installation & Repair
Toilet installation, repair, and replacement for all makes and models.
Gas Line Repair & Installation
Licensed gas line repair, installation, and leak detection for safety and compliance.
Reverse Osmosis System Installation
Under-sink and whole-home reverse osmosis system installation for clean drinking water.
Explore Our Other Services
Serving the Bay Area
Toilet Repair & Installation
We proudly serve homeowners across the entire Bay Area
Don’t see your city? Call (408)539-6936 to check availability.