Reviews of local pros in Avon Lake, Ohio

I would highly recommend Avon Lake Plumbing! We had a leaking water heater late in the evening and Dennis, per a phone conversation, walked us through the process of turning off the water at the tank as well as how to use our garden hose to drain the water out of the tank! He was friendly, professional, and patient with us! By ten the next morning, he was at our home with the replacement water heater. Dennis and his assistant were knowledgeable, efficient and courteous. We highly recommend their service!!

All of a sudden, our water heater stopped working. I called Avon Lake Plumbing and was immediately impressed by the friendly, efficient, and responsive service over the phone. The technician arrived within 30 minutes and resolved the issue within 5 minutes. He was very knowledgeable and provided a very reasonable solution/service. I’m truly appreciative of their exemplary business practice and highly recommend them!

Today was another save on behalf of Dan at Avon Lake Plumbing! Today's call was my leaky toilet. Another job well done. They have done it all for me...toilets...sink and bathtub drains...my newer garbage disposal and last but not least, replacing my hot water tank. Always prompt, professional and resonably priced. The real value add is they have been my plumber for 10 years and THEY ALWAYS GET IT RIGHT THE FIRST TIME. Thanks to Dan and Avon Lake plumbing for always being there.

I do not recommend Avon Lake Plumbing after the experience I have had with them.

Avon Lake Plumbing won our business in December 2023 via a quote that was, at best, inadequately thought out. At worst, it was a bait and switch tactic. Specifically, they quoted us $5,000 all-in to fix a cracked pipe underneath our basement floor, repair a backwater (aka backflow) valve underneath our front porch, AND rough-in a basement bathroom. We eagerly scheduled this job as this was an extraordinarily competitive quote. What has transpired since then has been very unpleasant.

When the owner (Dennis) arrived with a large crew to start cutting into our floors and started camera-ing our sewer lines, the price started jumping up. Suddenly it would cost $4,500 to fix the cracked pipe, $6,000 to rough-in the bathroom, and $6,000 to install a new backwater valve. We called that project off and regrouped.

We decided to have Avon Lake Plumbing install a new backwater valve on our main sanitary sewer line in 2024. When we had questions during the process about whether our storm sewers were connected to the sanitary sewer, Dennis responded defensively but reassured us that he would camera the sewer lines ahead of time, that the sanitary sewers are separate from the storm sewer lines, and that "It will work exactly like it should and you won't flood". When we asked about maintaining it, he told us it doesn’t need to be maintained as long as the flap is opening.

Another company camera-ed our sewer lines in late 2024 and noted the backwater valve was holding water. We contacted Dennis directly to lodge a warranty claim. After finding out that there was an issue with the valve due to incompetent installation, Dennis stopped taking our calls. We have reached out to Avon Lake Plumbing countless times. We have called Dennis directly, and we are sent straight to voicemail every time.

Imagine our surprise on 7/29/2025 when water started coming into our (now finished) basement through the sanitary sewer lines during a heavy rain. This is the exact issue we paid Avon Lake Plumbing thousands of dollars to prevent, and which Dennis explicitly guaranteed would not happen.

If trying to call Dennis directly is bad, calling the Avon Lake Plumbing “office” isn’t any better since all the messages they take for Dennis seem to get lost and we never get a call back. The one time the office didn’t lose our message and Dennis promised he would come look at his faulty work, he never showed up! When we finally got through to him, Dennis offered many explanations and after-the-fact disclaimers for why his plumbing work is subpar (none of which were mentioned before he accepted our thousands of dollars).

The most alarming of his disclaimers was that a downspout might be tied into our sanitary sewer line. Such a suggestion on his part exposes his lack of adequate diligence, including a lack of proper dye testing and camera inspection prior to installation. His offering of this excuse amounts to an admission of negligence on his part for installing a backwater valve on a sanitary sewer line without doing an adequate inspection. Completely unacceptable business practices by Avon Lake Plumbing. There were other excuses offered...but the reality is that Avon Lake Plumbing installed a faulty backflow valve and happily accepted over $5,000 for below average work and are not willing to do anything to make it right. Stay away!

Prior to posting this review, I shared these points with Avon Lake plumbing and asked them for satisfactory resolution. That has yet to occur.

Speaking of reviews, please note that as of 8/1/2025, one of the five star reviews on this business is from the Avon Lake Plumbing office manager (it uses their actual name). Several of the other five star reviews also appear to be fake. The other negative reviews more closely align with my experience- the surliness, lack of professionalism, the "it's your fault" attitude. Please think twice before engaging with this organization.

Working with Avon Lake Plumbing has been nothing short of excellent. Dennis Gareau and his team are reliable, professional, and extremely knowledgeable. Whether it's a quick fix or a full plumbing project, they show up on time and get the job done right the first time. It's clear they care about their craft and their customers. Highly recommend to anyone in Avon Lake or nearby looking for top-notch plumbing service!

The guys at Copperline replaced our hot water tank today and we were very impressed with the service. As neighbors, they were aware of some of the common issues our developer had and were ready to correct them on the spot. They were also professional, courteous, and fairly priced. Would definitely recommend!

First met with Brian regarding inoperative A/C unit. Consultation and inspection warranted a new unit. He contacted the office and sent photos. Received estimate quickly and electronically. It was comprehensive and itemized. I researched online regarding expected cost and it was a good price. They were able to replace the unit the next day. Jesse and Nick were professional, respectful of the property and explained the changes inside and out. Also reviewed troubleshooting and preventative maintenance.
Stellar company. Highly recommend.

We had a downed furnace that left us with no heat for a day. Brian of copperline was quick in sending Miguel over to troubleshoot our issue but it looked like the furnace needed to be replaced. Brian had his guys over at 8am today to have the entire furnace replaced. They did such a good job and try to help their customers in any way they can. Thank you Brian, Karl and Miguel!!! You guys rock!

Had my Mitsubishi split air conditioner installed today!
Nick, Jesse & Bryan was the crew and they were great and did a flawless job. Well done Copperline!

Great service from the initial call to post-service. Everyone was professional and friendly and even left the space cleaner than when they arrived. Great people and company!

Jesse and Bryan were on time and efficiently completed the job of installing a new AC unit. Kelly in the office worked to get the job in the schedule as soon as she could. And with a little bit of work on our part, we got a reasonable estimate by email so that we could get the job done sooner than we could have with other companies that wanted to schedule an in-home estimate. Highly recommend the folks at Copperline.

Karl came to our house was very prompt and courteous. He diagnosed the problem with our heating system and was able to get it repaired quickly. I appreciate his efforts and clear explanation of our options. Thank you

Copperline just installed a new furnace and AC unit for us today. Four technicians did the job; Karl, Jesse, Bryan and Musa. All were a pleasure to work with, respectful of our property and seemed to do a great (and efficient) job with the installation.
On top of that, Copperline's pricing was quite reasonable and as a company they were very easy to do business with. We'd recommend them wholeheartedly.

I highly recommend Copperline. They replaced a very old furnace and A/C unit for my father's home. Jesse, Karl, Nick & Bryan were on time, efficient in completing the work with quality, kept things tidy and cleaned up afterwards. They were courteous and professional, and took the time to show and explain the work completed.

My old AC unit broke down this summer while I’m extremely pregnant, so I’m very grateful that Copperline installed our new system. Bryan, Karl, Kelly, and the whole team were incredibly informative and helpful throughout the process. We also got a quote from another company, Westland, who were very knowledgeable too and offered additional services, but they were a few hundred dollars more. We ultimately chose Copper line because Karl was straightforward, kind, and didn’t overwhelm me with too many questions. Thank you for getting us set up with our new AC unit!

GREAT customer service. A company you can trust. I wouldn’t deal with anyone else. I am very particular about people/companies that I work with. I have great confidence in Copperline.

Jesse, Karl, and Bryan installed new Trane furnace and air conditioning units in my home today. I have been using Copperline for years. My brother, two daughters and families are also customers. I have been and continue to be pleased with this company and their employees. From the Owner to the Office Manager to people who repair and install, they are helpful, polite, clean and skilled. I highly recommend Copperline for your heating and cooling needs.

Jesse, Karl, Nick and Bryan recently installed a new furnace and air conditioner for us. They were all extremely friendly and professional. It was a big job, but installation was quick, and they were very patient, answering all our questions. Clean up was perfect. Scheduling was also easy with Kelly. Excellent company. Highly recommend. 5 stars

Copperline came to us highly recommended. They had the best price and better equipment to replace our furnace and AC.

The team of Jesse, Karl, Nick, Bryan, and Musa worked very efficiently together. Quality installers; respectful and clean. Total replacement only took around 4 hours and we can enjoy our home again!

I highly recommend Copperline for any and all HVAC needs. They are always reliable and punctual. Jesse, Nick, Bryan and Musa installed a new furnace and AC unit in my home today and they did a great job! They arrived at exactly the time they told me they would be here and got right to work. They were all very friendly, professional, knowledgeable, and efficient. I was impressed by how quickly they got the job done and had everything up and running smoothly in less time than estimated. I have had nothing but positive experiences with everyone at Copperline every time I have called for service. Great company with phenomenal workers!

Nick and Jack came over to do a routine maintenance on my furnace ( I purchased the plan in the summer so no charge for Fall). I purchased an ECOBEE in the summer as Nick had advised when he did the air service appointment. Nick installed the ECOBEE and showed me how to use it. I'm very happy with the knowledge and service that I've had from
Copperline LLC Heating and Air Conditioning