Toilet Installation & Replacement in Pittsburgh PA
Your toilet accounts for 27% of your home's total water usage. A high-efficiency replacement uses as little as 0.8 gallons per flush - and can last 50 years. Same-day installation, upfront pricing, and our 100% satisfaction guarantee on every job.
★★★★★ Since 1983 · All Major Brands & Styles · 100% Satisfaction Guarantee
SAME-DAY
1-Visit Install
Most jobs done in one trip
40 Years
Experience
A+ Rating
Better Business Bureau
Lifespan
50 years of drip-free toilets
0% Financing
Available Now
Pricing
No Hidden Charges
Is Your Toilet Costing You Money?
5 Signs It's Time for a New Toilet Installation
Your toilet accounts for 27% of your home's total water usage. A toilet installed before 1995 uses 3.5–7 gallons per flush. A new high-efficiency model uses as little as 0.8 gallons - cutting your water bill every month you keep it.
- Repairs needed monthly or more
- Visible cracks in the bowl or tank
- Persistent leaks that return
- Wobbling even after bolt tightening
Toilet leaking or failing?
(412) 388-2512

Choosing the Right Toilet for Your Pittsburgh Home
From comfort-height two-piece models to smart toilets with heated seats and touchless flushing — we'll help you pick the right fit for your bathroom, budget, and household, then install it the same day.
Styles we install:
- One-piece - sleek, seamless, easiest to clean
- Two-piece - traditional styling, easier parts replacement
- Wall-mounted - space-saving, modern look
- Comfort height - 17–19" seat, ADA-friendly
- Smart toilets - heated seats, touchless flush, built-in bidet
We Install Every Style & Efficiency Level
💧 Water Efficiency Comparison
Pre-1995 standard
Modern standard
High-efficiency (HET)
Ultra-high efficiency
3.5–7 gal/flush
1.6 gal/flush
1.28 gal/flush
0.8–1.0 gal/flush
Old toilet wasting water or constantly failing? Let's replace it today.
Same-day service across Allegheny, Beaver, Butler, and Washington counties.
Worried About the Cost?
Plumbing services can be expensive - but postponing repairs always costs more.
Our licensed professionals guarantee high-quality service, upfront pricing, and 100% satisfaction. On top of all that - we're family budget-friendly, with 0% financing available for qualifying homeowners.
More Pittsburgh Plumbing Services
Toilet Repair
Running, leaking, or rocking toilet fixes when replacement isn't needed
Drain Cleaning
Clear the chronic clogs that are causing your toilet problems at the source
Shower & Bathtub
Complete the full bathroom upgrade while we're already there
Best Choice for pittsburgh homeowners
Ready to Upgrade Your Pittsburgh Toilet?
11 Tunnel Way, McKees Rocks, PA 15136 · Mon–Fri 8:00 AM – 4:30 PM · Same-day service available
Meet the Owners of WJ McNabb Plumbing

Melisa and William (Bill) McNabb
William “Bill” McNabb is the co-owner and master plumber of W.J. McNabb Plumbing, a highly respected, family-owned plumbing company serving Pittsburgh, PA, and surrounding communities. With over 40 years of hands-on experience in the plumbing industry, Bill leads the company’s operations and is recognized for his technical expertise, integrity, and commitment to customer satisfaction. Bill holds NASSCO certifications in PACP, MACP, and LACP, ensuring his team adheres to the highest standards in pipeline and infrastructure assessment.
Melisa McNabb is the co-owner and office manager of W.J. McNabb Plumbing. She plays a pivotal role in the company’s daily operations, customer relations, and business development. Melisa is often the first point of contact for customers, ensuring that each client receives prompt, friendly, and knowledgeable service. She is instrumental in upholding the company’s mission of delivering top-rated service and maintaining a seamless experience for both customers and staff.
Location
W.J. McNabb Plumbing operates from their McKees Rocks location, serving homeowners and businesses throughout Pittsburgh and the surrounding communities. Their expert plumbing services and customer care reach neighborhoods across Allegheny, Beaver, Butler, and Washington Counties
Why Trust WJ McNabb Plumbing
Still a True Local Family Business
You should call W.J. McNabb Plumbing because they treat every customer like a neighbor, showing up promptly, explaining repairs clearly, and always respecting your home and time. Their team is known for being personable, patient, and genuinely caring—whether you’re in a panic with a leak or just need advice, you’ll get friendly, honest service from people who want to make your day easier, not harder. Homeowners consistently praise their professionalism, kindness, and the peace of mind that comes from working with a family-owned business that values relationships as much as results.
Homeowner Help Center
How much does toilet installation cost in Pittsburgh?
Toilet installation cost depends on the toilet you choose, the condition of the bathroom floor, the shutoff valve, the toilet flange, and whether the new toilet lines up with the existing drain. A basic replacement is usually more affordable than moving a toilet, repairing damaged flooring, or replacing older plumbing parts. In many Pittsburgh homes, the most important part of the job is what is under the toilet, not just the toilet itself. WJ McNabb Plumbing checks the full setup before giving upfront pricing, so you know what needs to be done before the work begins.
Do I need a plumber to install a toilet?
Yes, it is smart to hire a plumber for toilet installation because a toilet has to seal correctly to the drain, sit level on the floor, connect safely to the water supply, and flush without leaking. A toilet that is slightly loose or poorly sealed can damage the floor, ceiling below, and nearby walls before you notice the problem. WJ McNabb Plumbing handles the wax ring or seal, flange connection, water line, shutoff valve, and final leak test so the toilet is installed for daily use, not just set in place.
How long does it take to replace a toilet?
A straightforward toilet replacement can often be completed quickly when the old toilet comes out cleanly and the flange, floor, and water shutoff are in good shape. The job can take longer if the flange is cracked, the floor is soft, the shutoff valve will not work, or the old toilet has been leaking at the base. WJ McNabb Plumbing takes the time to check those hidden trouble spots because a fast install is only a good install if it does not leak after the plumber leaves.
Should I repair my toilet or replace it?
Repair may make sense if the toilet is fairly new and the issue is limited to a flapper, fill valve, handle, supply line, or simple running-water problem. Replacement is usually the better choice if the toilet is cracked, wobbly, constantly clogging, leaking at the base, using too much water, or needing repeated repairs. WJ McNabb Plumbing can help you make the practical call, so you are not spending repair money on a toilet that is already near the end of its useful life.
Why is my toilet leaking at the base?
A toilet leaking at the base is often caused by a failed wax ring or seal, a loose toilet, a damaged flange, or movement between the toilet and the floor. Sometimes the leak only appears when the toilet is flushed, which means wastewater may be escaping under the toilet. That is not a problem to ignore. WJ McNabb Plumbing can remove the toilet, inspect the flange and floor area, replace the seal, and reset the toilet properly so the leak does not keep damaging the bathroom.
What type of toilet should I install?
The best toilet depends on your bathroom size, comfort needs, budget, and water-use goals. Two-piece toilets are common and practical. One-piece toilets are easier to clean and have a cleaner look. Comfort-height toilets can be easier for many adults to use. Dual-flush and high-efficiency toilets can help reduce water use. WJ McNabb Plumbing helps Pittsburgh homeowners choose a toilet that fits the space, connects correctly to the existing plumbing, and works well for the people using it every day.
Can a new toilet help save water?
Yes. Replacing an older toilet with a modern water-efficient toilet can reduce water use with every flush, especially if the current toilet runs, leaks, or uses an older high-volume flush design. A new toilet can also improve flushing performance when the right model is chosen for the bathroom and drain setup. WJ McNabb Plumbing can install a toilet that balances water savings with dependable flushing, because saving water should not mean flushing twice.
Can you install a toilet in an older Pittsburgh home?
Yes, but older Pittsburgh homes often need a closer look before installation. The toilet flange may be worn, the floor may not be level, the shutoff valve may be stuck, or the drain rough-in may not match every modern toilet. Those details can affect how well the new toilet fits, seals, and flushes. WJ McNabb Plumbing has experience with older local homes and checks the full connection before setting the toilet, which helps prevent leaks, rocking, and callbacks.
Why should I hire WJ McNabb Plumbing for toilet installation in Pittsburgh?
WJ McNabb Plumbing is a locally owned Pittsburgh plumbing company that treats toilet installation as a real plumbing job, not a quick swap. That means checking the flange, seal, water line, shutoff valve, floor stability, and flush performance before calling the job finished. With licensed professionals, upfront pricing, family-budget-friendly service, and a 100% satisfaction guarantee, WJ McNabb Plumbing gives Pittsburgh homeowners a toilet installation that is clean, dependable, and built for everyday use.
