Superior Plumbing & Heating
“The company did a good job on a water heater installation and the installers worked quickly and cleanly.”
Best Plumbers in Ajax, ON
15 contractors listed · 6 in Ajax · 11 open 24/7 · 14 open weekends · 14 rated 4.5+
Data verified October 21, 2026
New Well Plumbing & Heating
“The faucet was installed quickly and neatly, with everything checked properly afterward.”
Sewer Squad Plumbing Co. Inc.
“Bruce and colleague Michael were friendly, professional, clean, and did thorough and high-quality work.”
Fix Plumbing
“After numerous attempts by other plumbers to repair a serious ongoing clogged- kitchen backed up drain, FIX Plumbing did an exceptional job, and identified that the original plumbing in the home that had been installed incorrectly.”
Wet Bandits Plumbing
“Highly recommended if I was to give 100 stars i would definitely do”
Toram Plumbing
“Serviced out studio location and we are thrilled with the professionalism and very fair pricing.”
Listed for homeowners in and around Ajax, 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: Ajax, ON
6 of the 15 contractors we list are based in Ajax; the other 9 serve Ajax from towns including Whitby (8 km), Pickering (5 km) and Oshawa (16 km). The contractors on this page are rated from 4.1 to 5.0 across 7,896 reviews; 13 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (92%), responsiveness (86%) and quality (77%). 11 are open around the clock and 14 are open on weekends. 7 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 2000. 11 offer emergency call-outs; 2 offer financing or payment plans; 7 give free estimates; 6 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for all 15 of the contractors on this page; 14 publish a contact page; 12 list a public email and 2 take 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.
Why are some of these plumbers based outside Ajax?
Ajax is the base for 6 of the 15 listings here; the rest come from other towns within 20 km. Plumbers work across a service area, so a neighbouring base is normal. Ask how far they travel and whether the trip charge changes with distance.
PR Plumbing
“He came on a Saturday evening, and he also found a way for us to save a few bucks.”
Call the Plumbing Doctor
“Both Brandon and Eddie the technicians that came to do the job were extremely polite hard working and great job cleaning up afterwards”
Golding Plumbing &drain Services
“They are a great team who changed my water intake valve in a timely fashion.”
Caldwell Plumbing
“Caldwell Plumbing is a great and reliable company, responded quickly and sent someone to help with our kitchen hose leak.”
Plumbing & Heating Heroes
“Very professional and helped our family with sewage pipe breaking in basement.”
Limcan Certified Heating and Air Conditioning
“Michael & Yousef were a pleasure to deal with—knowledgeable and very professional.”
2 Bro's Plumbing
“Our laundry room sink backed up in the basement, 2 Bros Plumbing was able to come out the very next morning.”
Fast Lane Plumbing
“Fantastic service - arrived within an hour of me calling asking for help, had the job done quickly and they were extremely pleasant to deal with.”
Delair Plumbing
“I would highly recommend him to anyone looking for reliable, professional, and quality plumbing work”
Why these companies made our list
What customers say about contractors in Ajax
- “Professional service and fast. They have helped me to fix the water pressure in my home, add an extra hose bib and install a new toilet.” — customer of Fix Plumbing
- “Daniel handled the water heater servicing and drain line repair quickly, neatly, and effectively.” — customer of Superior Plumbing & Heating
- “These polite gentlemen did an amazing job fixing the faucet in my kitchen sink.” — customer of Sewer Squad Plumbing Co. Inc.
Excerpts from public reviews of the contractors listed on this page.
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