McPipe Plumbing Inc.
“Firstly, his honesty stood out; during the initial phone call, he promptly provided the price and suggested the type of service he believed I would require based on my description.”
Best Plumbers in Thornhill, ON
24 contractors listed · 7 in Thornhill · 17 open 24/7 · 23 open weekends · 23 rated 4.5+
Data verified October 16, 2026
Drain Jobs Inc.
“He did a great job installing new taps and hooking up all are drain in our house.”
Eco Plumbing and Drain
“I have assigned so far three new construction project to Eco team and have been overall very satisfied with the quality of the work that they have done.”
Sewer-Man Sewer & Drain Repair GTA
“The excavation and sewer line replacement cost was very reasonable and they give a LIFETIME WARRANTY and it's transferrable to the next owner of the property, which increases the resell value.”
The Maple Roots
“I have been a Client of Maple Roots Plumbing for many years, & I appreciate their Fast Service, Professional Work, & Knowledge.”
Alfa Plumbing & Radiant Flooring
“Great guy and so professional and on time on his job .”
Listed for homeowners in and around Thornhill, ON, these 24 companies cover plumbing work. Hours, licence claims and free estimate offers come from each company's own website. Ask about provincial workers compensation coverage too, since the work happens inside your home.
Area overview: Thornhill, ON
7 of the 24 contractors we list are based in Thornhill; the other 17 serve Thornhill from towns including Toronto, North York and Etobicoke. The contractors on this page are rated from 4.0 to 5.0 across 7,809 reviews; 19 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (91%), responsiveness (81%) and quality (79%). The topics that come up most in reviews of the contractors on this page are "price", "efficient" and "estimates". 17 are open around the clock; 21 are open on Saturdays and 21 on Sundays. The services the contractors on this page list most often on their websites are sump pump (3), emergency plumbing (2), plumbing installation (2) and tree root removal (2). 12 show a licence on their websites. 8 have ten or more years of experience, the longest 30 years. 18 offer emergency call-outs; 1 offers financing or payment plans; 14 give free estimates; 7 are family- or locally-owned and 5 list coupons or special offers. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
Which plumbers listed for Thornhill take calls at night?
Cover at any hour is claimed by 17 of the 24 plumbing listings here. Before paying a night rate, shut the main off and see whether the trouble stops. If it does, book for normal hours and get the same repair for less. Confirm the after-hours rate on the phone.
G & M Plumbing & Heating
Rooter Team Inc
“Guy came on time, despite it was Friday night, was super efficient, did perfect job, I can recommend to everybody !”
Drain King Plumbers Toronto
“The technician, when he got there was, according to my parents, very capable of discerning the issue at hand and relaying to my parents what the actual problem was.”
R.e.s. Plumbing & Drain Services
“The service was excellent and would highly recommend RES Plumbing to anyone in need of any plumbing services.”
True Service Plumbing
“We needed someone urgently for a leak in our kitchen and Nico was there promptly and gave us good advise and fixed the leak.”
Refined Home Services
“Job was great and very informative and knowledgeable.”
Beaches Bluffs Leslieville Plumbing & Drains
“They already had a busy day but made the effort to get to my house SAME DAY and locate and fix all problems.”
Drain 1 Plumbers Inc.
“They solved a long-standing drainage issue that other companies couldn't fix.”
Advanced Plumbing Drains & Heating
“Great work and explanation to keep me informed at all steps of the process.”
Plumbers Direct
“The great folks at Plumbers Direct were super responsive and so accommodating.”
A to Z Plumbing and Drain
“The serviceman was neat and helpful in explaining what work he did.”
Rooter-Man
“We had a toilet clogging problem in the house, they solve the problem in timely manner.”
Santos Water
“They explained all the work and how much it would cost and they did not try to over sell the work.”
Mersey Heating and Air Conditioning
“Emmanuel Johnson did a good job.”
Reliable Source Plumbing & Drains Ltd
“Knowing how important it is to have a working sink in the kitchen, Danny stayed until almost 10:00pm to make sure it was done.”
Drainworks Plumbing
“Prompt, courteous and knowledgeable, Armando and his team took the time to trouble shoot our issues (and in the basement of an old house, there can be many!”
Waterproofing PD
“Solid job, showed up on time, executed and solved the problem, supplied a written warranty.”
Strong Plumbing Inc
“He goes above and beyond by taking the time to explain what will be done and recommending how to save money in the future.”
Why these companies made our list
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