Trinity Plumbing Niagara
“They are very friendly and knowledgeable, and I can't thank them enough for helping out as much as they did and still are.”
Best Plumbers near Thorold, ON
2 of these contractors are based in Thorold; the others serve Thorold from towns including St. Catharines, Welland and Niagara Falls.
5 open 24/7 · 11 open weekends · 22 rated 4.5+ · 9 show a licence
Data verified October 18, 2026
Ideal Plumbing & Heating
“This was a big job and my husband and I are extremely satisfied with the work performed and service provided.”
Complete Plumbing
“Arrived exactly as scheduled and completed a job that I thought might take 2 days to complete in less than an hour!”
Wellbrook Plumbing Inc.
“Wellbrook installed a new sump pump with back-up, What company answers a phone call, gives on the spot quote and installs all on the same day.”
Brian Easton Hvac
“We were impressed from the very first phone call requesting a quote to the furnace and a/c installation.”
Emerald Plumbing AND Heating
“First person I talked to was Ray… really pleasant guy, easy to talk to and I didn't feel as if I was being “sold” something, if that makes any sense.”
Listed for homeowners in and around Thorold, 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: Thorold, ON
The 24 contractors on this page are rated from 3.9 to 5.0 across 3,273 reviews; 9 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (95%), responsiveness (81%) and quality (80%). The topics that come up most in reviews of the contractors on this page are "price", "estimates" and "cleanliness". 5 are open around the clock; 11 are open on Saturdays and 10 on Sundays. 9 show a licence on their websites. Domain records put 3 websites of the contractors on this page at ten or more years old; the oldest dates from 2001. 7 offer emergency call-outs; 2 offer financing or payment plans; 4 give free estimates; 3 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for all 24 of the contractors on this page; 22 publish a contact page; 19 list a public email and 2 take bookings online. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
How many listed plumbers say they are licensed?
9 of the 24 plumbing listings here show a licence on their websites. Confirm it with the provincial body that issued it rather than accepting the website. A company that does not say so may still be licensed, so ask on the phone and note the number before the first visit.
Mr. Furnace Heating and Air Conditioning
“Bryan Minotti was my service technician and he explained to me what needed to be done so that I could understand easily.”
Go Green Plumbing Ltd
“Once you use their services you wont need another number in your phone!”
Metro Plumbing & Heating
“Very professional and great service from the whole team in the company!!!”
Canada's Pro Plumbing
“The office staff returns all calls and provides detailed documents for invoices and all quotes.”
JW Furness Plumbing
“We had this company come back for a second time to service our furnace for the winter and AGAIN, awesome service and dedicated care was shown.”
Foundation Waterproofing by Moe
“They did my waterline in a timely fashion, had a professional crew!”
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Acumen Plumbing
“Acumen installed my central air unit 6 years ago and has done numerous other work for us after some renovations.”
Reasonable Rooter
“Matt went above and beyond and I am truly thankful for his professionalism and workmanship.”
Plumr
“Alex is amazing he helped out ASAP and got everything I needed done.”
Daine Spooner Plumbing Inc.
“I would highly recommend him for getting things done right the first time itself.”
Talix Plumbing
“Excellent service with attention to detail being important.”
Marc's Plumbing and Heating
“Solved a stubborn drain clog and improved the drain piping in the meantime.”
Plumb Connect Inc
“Josh was able to identify the solution to our issue quickly and took his time to explain everything to us.”
Modern Mechanical Plumbing & Heating
“If you need plumbing work done definitely put Modern Mechanical at the top of your call list.”
MNM Plumbing Niagara Inc
“Excellent, professional and quality work with fair honesty pricing.”
ACE Plumbing & Heating Corp
“He's a top notch plumber, friendly and does excellent work.”
Your Plumbing Company Inc.
“He was very professional, his work was of the highest quality, the price was very fair and he definitely knew what he was doing.”
Gordon Wright Limited
“Above average excellent service for a decent price.”
Why these companies made our list
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