Top 5 Plumbers
in London
We compared 5 Plumbers serving London, Ontario using publicly available business information, including customer reputation, local presence and documented services. Across the businesses featured here, documented specialties include Furnace installation and repair, Air conditioner installation and repair, and Air conditioner maintenance.
★ London’s featured plumbers have the highest score among the nearby FiveBest markets compared.
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Donaldson provides residential plumbing in London, including repairs, drain cleaning, sump-pump work, water purification and fixture-related services. Its official plumbing page also states that urgent plumbing help is available after hours and on weekends.
Furnace installation and repair · Air conditioner installation and repair · Air conditioner maintenance
For plumbing in London, John The Plumber has documented residential and commercial work covering emergency calls, drain cleaning, sewer backups, leak repairs, water heaters, sump pumps, fixture replacements, backwater valves and plumbing video inspections.
24/7 emergency plumbing · Drain cleaning and sewer backup service · Leak detection and repair
Mr. Rooter Plumbing of London ON provides residential and commercial plumbing in London, including 24/7 emergency response for leaks, clogged drains and sewage backups. Its local site documents drain cleaning with HydroScrub jetting and camera inspections, plus sewer-line repair and replacement for recurring drainage problems.
Emergency plumbing repairs · Drain cleaning and HydroScrub jetting · Sewer camera inspections
London Plumbing lists 24-hour emergency response alongside general repairs, new plumbing installations and drain-related work for residential and commercial needs. Based at 79 Stanley St and explicitly serving London, the company is relevant for urgent leaks or backups, fixture updates, and kitchen or bathroom renovation plumbing.
General plumbing repairs · New plumbing installations · 24-hour emergency plumbing
Salliss Plumbing & Heating is a London plumbing business located at 443 South St, with residential, commercial and emergency plumbing listed among its services. The company is also named on the City of London’s registered tester list for backflow-prevention devices, a relevant capability for required device testing.
Residential plumbing · Commercial plumbing · Emergency plumbing service
London plumbers lead nearby FiveBest markets
Featured plumbers in London have a median FiveBest Score™ of 90/100, compared with 80/100 for featured plumbers across Ontario.
Among nearby FiveBest markets, those in Chatham-Kent (77/100) and Sarnia (71/100) score below London.
Comparison based on profiles currently featured by FiveBest in this category with an available FiveBest Score™.
How we researched Plumbers in London
FiveBest reviews publicly available information for Plumbers serving London.
- Google rating and review history
- Documented services
- Years in business when available
- London and surrounding service coverage
- Business website and online presence
- Independent reputation signals when available
Research last updated: September 2026
Typical Service Price Ranges
Price ranges are based on typical industry averages. Actual costs may vary depending on the scope of work, materials, labour, property characteristics and local market conditions.
- Service call $120–$250
- Drain cleaning $180–$450
- Toilet install / replacement $250–$650
- Water heater installation $1,200–$3,500
- Emergency plumbing $180–$350/hr
Common Services
- Emergency plumber in London
- Drain cleaning in London
- Clogged drain repair in London
- Water heater repair in London
- Water heater installation in London
- Sewer line repair in London
How to Choose a plumber in London
Compare plumbers in London for emergency plumbing, clogged drain cleaning, sewer line repair, water heater installation and repair, leak detection, burst pipe repair, sump pump service, toilet repair and residential or commercial plumbing. FiveBest helps users compare selected local plumbing companies in one place.
Compare selected plumbers in London for emergency plumbing, drain cleaning, water heater repair, leak detection, sewer work, sump pumps and pipe repairs.
Ask what is causing the leak, blockage, pressure issue or equipment failure before approving major replacement.
Confirm the plumber or contractor meets licensing requirements that apply to the work and location.
Confirm labour, materials, fixtures, diagnostic charges and emergency or after-hours fees.
For larger alterations or replacements, ask whether permits or inspections are required and who handles them.
For fixtures, pumps or water heaters, confirm model, capacity, efficiency, warranty and installation requirements.
Confirm workmanship and product warranties plus what happens if the issue returns after service.
What Affects Plumbing Costs
- Type of plumbing problem
- Diagnostic time
- Accessibility
- Pipe or fixture materials
- Drain blockage severity
- Equipment or fixture replacement
- Permits and inspections
- Emergency or after-hours service
- Water damage or related repairs
Questions to Ask a Plumber
- What is causing the plumbing problem?
- Does the quote include labour, materials and diagnostic charges?
- Are permits or inspections required?
- What fixture, pipe or equipment specifications are included?
- Are there alternatives to full replacement?
- What workmanship and product warranties apply?
- Are emergency or after-hours fees different?
- How will the work area be protected and cleaned?
Frequently Asked Questions
Plumbing costs in London vary according to the service, urgency, labour time, required materials and accessibility of the problem. Emergency calls, sewer repairs and major pipe work generally cost more than routine fixture repairs.
Many plumbing companies offer emergency service for burst pipes, major leaks, sewer backups, overflowing fixtures and loss of water. Availability and after-hours rates should be confirmed directly.
Plumbers and drain-cleaning companies can inspect and clear clogged sinks, toilets, showers, floor drains and main sewer lines using tools appropriate to the location and severity of the blockage.
Many plumbers diagnose water-heater problems, replace components and install new tank or tankless systems. Ask whether the company services your fuel type and particular model.
Call promptly when a leak is active, recurring, hidden behind a wall, affecting water pressure or causing stains, mould, damage or unusually high water use.
Compare licensing where applicable, insurance, experience with the specific problem, written estimates, emergency availability, warranties, service area and recent customer reviews.