TRH Plumbing & Heating Inc
“Adam coordinated a tech (Rob) to arrive onsite & did a great job.”
Best Plumbers in Waterloo, ON
15 contractors listed · 6 in Waterloo · 6 open 24/7 · 7 open weekends · 11 rated 4.5+
Data verified October 18, 2026
Kastl & Zuch Plumbing & Heating Ltd
“Great customer service: both from the phone reception and also the plumber who came.”
Transparent Backflow Services
“Would highly recommend this business to anyone in need of their services.”
M. Durbin Plumbing Solutions
“We've used Durbin Plumbing a few times and have always been very happy with the service, crew and quality of work.”
Paton Bros Ltd
Tiger Plumbing Inc
“I was able to get the appointment for first thing (8 am) today yesterday.”
Listed for homeowners in and around Waterloo, ON, these 15 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: Waterloo, ON
6 of the 15 contractors we list are based in Waterloo; the other 9 serve Waterloo from Kitchener (6 km). 14 of the contractors on this page have a rating, from 3.7 to 5.0 across 9,580 reviews; 8 have 50 or more reviews and 11 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (93%), responsiveness (83%) and quality (77%). The topics that come up most in reviews of the contractors on this page are "price" and "efficient". 6 are open around the clock; 6 are open on Saturdays and 7 on Sundays. 4 show a licence on their websites. Domain records put 4 websites of the contractors on this page at ten or more years old; the oldest dates from 2004. 7 offer emergency call-outs; 2 offer financing or payment plans; 5 give free estimates; 1 is family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the contractors on this page; 13 publish a contact page; 12 list a public email and 1 takes bookings online. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
How many listed plumbers say they are licensed?
4 of the 15 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.
The Waterloo Plumber
365 Heating & Cooling Inc.
“Took the old dishwasher away & installed the new one in short order.”
Tri City Plumbing Inc.
“I work as a property manager and am grateful I've had the opportunity to work with Tri-City Plumbing - from their customer service, to response time and quality of repair, I highly recommend”
Book onlineBook
Aire One Heating & Cooling KW
“Steven and Hasan installed my furnace, it was a great and clean job.”
Plumingo
“She was prompt, careful and left no evidence she had been in the house.”
Byams Plumbing
“Their response time was great, same day service, amazing customer service and they give you a quote before hand...”
One Stop Plumbing Limited
“A phone call first to ask a question resulted in me taking pictures of the issue and being told that they will have what we need to repair.”
Nas Plumbing Inc.
“The work they did was very well done and we plan on using them again for all future jobs.”
Dave Hurst Plumbing & Heating Inc
“I called hurst plumbing and within an hour they were here to fix the line.”
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
