Diagnostic Visits
We find the actual root cause — not just the symptom — and walk you through every realistic repair option with pros, cons, and price.
Repairs & Diagnostics
Honest diagnosis. Fair price. Warrantied work.
Honest diagnosis. Fair price. We fix what's broken without trying to sell you what isn't.
Same-Day Available
Most calls scheduled today
24/7 Live Dispatch
A real local tech answers
Licensed & Warrantied
Workmanship guaranteed
About this service
Repairs & Diagnostics in the Niagara Region
Some plumbers see a service call as a sales call. We don't. When you book Ottr Plumr for a repair or diagnostic, we tell you exactly what's wrong, what it'll cost to fix, and whether it's even worth fixing at all. If your 22-year-old water heater needs a $400 repair and is six months from failing anyway, we'll say so — and let you decide.
Whether it's a mystery leak under the kitchen sink, low water pressure that crept up over months, a noisy pipe that bangs every time the dishwasher runs, or a fixture that just won't behave — we diagnose it properly using the right tools (acoustic locators, in-pipe cameras, pressure gauges, combustion analyzers when heating is involved), explain it to you in plain English, and quote the fix in writing before we lift a wrench.
We're also the people locals call for second opinions. If you've been quoted a $4,200 sewer-line replacement and your gut says something's off, we'll come out, run a camera, and give you an honest read on whether you really need a full replacement or whether a spot repair fixes it. No obligation to book the work with us.
Our diagnostic fee is flat, transparent, and credited toward the repair if you book us to do the work. You always know the cost before we arrive — no 'trip charge plus hourly plus parts plus a markup we won't explain.'
What we do
Specialties under Repairs & Diagnostics
Leak & Pressure Issues
Hidden leaks, low water pressure, water hammer, noisy pipes, and unexplained high water bills — diagnosed and resolved.
Camera Inspections
In-pipe video inspection for drains, sewer laterals, and main water lines — recorded so you can see exactly what's going on.
Second Opinions
Got a quote that feels off? We'll give you an honest second opinion at no obligation. Sometimes the first quote is right; sometimes it isn't.
Pre-Purchase Inspections
Buying a home in Niagara? We'll do a focused plumbing inspection on top of the home inspector's general report — sewer scope included.
Repair vs. Replace Analysis
Old water heater? Aging furnace? Galvanized supply lines? We'll do the math with you so you can make a confident long-term decision.
Why Ottr Plumr
Local. Honest. Warrantied.
We earn the call back by doing the job right the first time — and being straight with you about what your home or business actually needs.
- We never upsell what you don't need
- Written diagnosis and quote before work begins
- All repairs warrantied
- Clean uniforms, drop cloths, and tidy job sites
- Diagnostic fee credited toward repair
- Plain-English explanations, no jargon walls
Common questions
Repairs & Diagnostics FAQs
Do you charge for diagnostics?
We charge a flat diagnostic fee that's credited toward the repair if you book the work with us. You always know the cost before we arrive — no surprise trip charges, no hourly meter running while we look. If we uncover something hidden during the work, we pause, show you what we found, and re-quote before continuing.
How fast can you come out for a repair?
Most non-emergency repairs are scheduled same-day or next-day. Emergencies — active leaks, no water, no heat, sewage backups — get priority dispatch around the clock.
Do you warranty your repair work?
Yes. Labor and parts are warrantied in writing. If something we fixed isn't right, we come back and make it right — no charge, no argument.
Will you give me a second opinion on someone else's quote?
Absolutely. We get second-opinion calls every week. We'll do an honest diagnostic, give you our take, and let you decide who to hire — including if that ends up being the other contractor.
Can you inspect plumbing on a house I'm buying?
Yes — pre-purchase plumbing inspections are one of our most valuable services. We focus on the stuff a general home inspector doesn't (sewer-line camera scope, water heater age & condition, supply line material, drain slope) so you go in eyes wide open.
Where we work
Repairs & Diagnostics across the Niagara Region
Local repairs & diagnostics in every city — pick yours.
Repairs & Diagnostics in St. CatharinesRepairs & Diagnostics in Niagara FallsRepairs & Diagnostics in WellandRepairs & Diagnostics in ThoroldRepairs & Diagnostics in LincolnRepairs & Diagnostics in GrimsbyRepairs & Diagnostics in PelhamRepairs & Diagnostics in Fort ErieRepairs & Diagnostics in Port ColborneRepairs & Diagnostics in Niagara-on-the-LakeRepairs & Diagnostics in West LincolnRepairs & Diagnostics in Wainfleet
Explore more
Other services
Residential Plumbing
Whole-home plumbing service for Niagara families — drains, faucets, fixtures, leaks, re-pipes, and renovations.
Commercial Plumbing
Dependable service for retail, office, restaurant, and industrial clients. We work around your schedule, not the other way around.
Heating Systems
Stay warm all winter. Furnace, boiler, and radiant heat install, repair, and tune-ups across the Niagara Region.
Water Heaters
Hot water, every time. We install, replace, and service tank and tankless systems sized properly for your home or business.
Sump Pumps
Don't wait for the next storm. Pro-grade sump pumps and battery backups keep your basement dry year-round.
Drain Cleaning
Slow sinks, gurgling toilets, sewer backups — cleared properly with snaking, hydro-jetting, and camera inspection across Niagara.
Emergency Plumber
24/7 emergency plumbing across Niagara — burst pipes, sewage backups, no hot water, flooding. Real local techs, fast dispatch.
Ready to book repairs & diagnostics?
Same-day service available across the Niagara Region.