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Top-Rated Sink installation pros in Ontario - Updated Nov 2026

Avatar for Top Contender Drain Specialist, Inc.
Top Contender Drain Specialist, Inc.
4.6(
230
)

Serving Ontario, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Noel and his helper showed up on time and brought in their equipment, protecting the floor area around the sink with a large mat. He patiently worked to break down the clog, which was extensive and sludgy. After the clog was fixed, he checked for leaks and cleaned up thoroughly, leaving the area looking and smelling nice again."
Camera Inspection
Dirt, Rocks and Debry
Locator the Drain line
Additional Photos
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+9

Recommended by91%of homeowners
Avatar for Repipe Pro
Repipe Pro
5.0(
20
)

Serving Ontario, CA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Art was extremely helpful and accommodating at every step of the project, from bidding through scheduling and even some additional work we needed a few weeks later. The team worked efficiently, doing a new main line install (going under our sidewalk and concrete without any demolition), re-piped the horizontal pipes under the house with copper (they were 100 year old galvanized), and setup a new shut off and regulator outside. They did everything in a day and cleaned up nicely. When we had other contractors working on our foundation 2 weeks later, they bent over backwards to get plumbers out the next day to make some fixes to drain pipe and at an excellent price. I got quotes from three companies and Repipe Pro was the most competitive and also great responsiveness from Art and his wife Thelma who run the business. To anyone looking for a repipe of a home or new main line or having drain work done, I definitely recommend contacting Art at Repipe Pro."
Recommended by100%of homeowners
Avatar for One Water Systems
One Water Systems
4.7(
49
)

Serving Ontario, CA and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Installation went smoothly. I've had the system for about 5 years and I recommend it highly. The water tastes great. We don't buy water anymore. Our pipes are protected from mineral buildup. Very pleased with our purchase."
April 2013 Install
April 2013 Install
Valley Center Install
Additional Photos
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+11

Recommended by89%of homeowners
Logical Rooter & Drain Cleaning Services
5.0(
13
)

Serving Ontario, CA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Juan did his best to clear the drain with his snake, but that didn't work. He worked very hard in the cold and approaching darkness until he cleared it with a high-pressure water device. He checked the work (and showed us) with a video camera snake, which revealed a break in our pipe and some tree roots that could be problematic in the future. We were pleased with his proficiency and the care he took to ensure that his work was safe for us and our property. We would definitely hire him again."
Additional Photos
Recommended by100%of homeowners
Avatar for AAP Home Services
AAP Home Services
4.8(
16
)

Serving Ontario, CA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"In 2013, AAP replaced my toilet with a new one (that they recommended). Over the past 4 years, that toilet has plugged up 6 times and I had to pay $125 each time to have AAP unplug it. I complained that they obviously installed a terrible quality toilet. The manager agreed to replace the toilet with a new one that was better quality...for free. No cost for the toilet or the labor to install it. Although I was pretty angry that they recommended a terrible toilet, I appreciated them replacing it for free. It was the right thing to do. Except for this issue, I have been very happy with AAP's service. They have always been able to come the same day I've called (even nights and weekends). And the service guys are all very nice and capable. I will continue to use them for all my plumbing needs."
Recommended by100%of homeowners
Avatar for Protek Flooring & Construction Corp
Protek Flooring & Construction Corp
4.6(
92
)

Serving Ontario, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"We couldn't be happier with the professionalism and excellent work done by Protek Flooring and Construction Corp. The flooring looks Great! Bryan was was very attentive to detail, and made everything with the install go smoothly, and in a timely manner. We highly recommend Protek Flooring and Const. Corp. for any flooring project you may have. *****"
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+29

Recommended by98%of homeowners
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Sink Installation FAQs, answered by experts

Check connections, clean fixtures, and apply finishing or protective coatings to preserve months' worth of shine and functionality.

Yes, there are different size sink drains, but a 1 ½-inch-diameter drain is the most common modern drain size. However, some sink drains are 2 inches or 3 inches in diameter. A bathroom sink drain is 1 ¼ inches in diameter, and kitchen sink drainpipes are 1 ½ inches in diameter.

Yes, you can install a farmhouse sink on an existing countertop—but there are some caveats. You’ll need to precisely measure. It’s best to choose a sink that’s the same dimensions as your existing sink, since your contractor won’t have to cut the countertop. Otherwise, pay close attention to the depth of your counter (the front to back measurement). You don’t want to install something that’s so big it sticks out beyond your countertop and cabinetry.

While unplugging your garbage disposal and plugging it back in may help, most units have an actual reset button, a bright red switch found on the underside of your unit. If your garbage disposal needs resetting, you may notice this button sticking out about a quarter of an inch from the surface of the unit, with which it’s usually flush. Simply depress this reset button to reset the unit, and then test to ensure it’s working about 10 minutes later.

Never pour used motor oil down the drain. Doing so can have serious environmental consequences, including contaminating groundwater, endangering animals, and killing vegetation. It can also clog your pipes, causing backups in your plumbing or the wastewater treatment plant. In most places, pouring motor oil down the drain is illegal, whether you do it in your home or a storm drain.

The Ontario, CA homeowners’ guide to sink installation services

From average costs to expert advice, get all the answers you need to get your job done.