My water heater stopped working on the 4th of July and I called Comfort Zone the next morning…read moreexpecting to leave a voicemail being the day after the 4th. Not only did they answer, they had someone out a few hours later installing a new water heater!! They did a fantastic job, we're very fairly priced, and even cleaned up so good you wouldn't know anything was torn out or replaced. I will recommend this company to everyone I know!

Highly recommend. Answered the phone on the weekend. Scheduled me for a same day appt. Tech called…read morewithin 30 minutes of arrival. Mill arrived discovered the issued immediately. Offered two options. Corrected the problem with our AC. Also, installed a new WiFi thermostat. Very pleased with the price, service and products.

October 5,2026 Oak Electric Service, came today Perform generator maintenance, Matt Goniea was the…read moretechnician , Matt was absolutely professional, friendly, and incredibly thorough, was very professional. I would recommend Oak Electric they do great work.

Oak Electric installed my solar system after I selected them through the City of Ann Arbor's…read moreSolarize Ann Arbor group-buy program. Overall, I've been pleased with the installation and the system itself. My concern is with the follow-up service. Part of the critter guard came loose and fell off, and it has now been almost three months since I first contacted Oak. During that time, I've corresponded with three different people at the company as well as their phone service. I initially asked whether the repair was covered under warranty. I also asked that, if it was not, they simply provide a parts list or tell me what I would need to buy so I could address it myself. I still have not received that information. I was subsequently told that Oak would take care of the repair, but almost three months later the critter guard is still sitting on the sidewalk. This seems like a relatively minor issue, and I've tried to be flexible about the solution. I would be satisfied either with Oak reattaching it as promised or with enough information to understand what is needed to fix it properly. I chose Oak in part because of its participation in Ann Arbor's organized solar group-buy program, and I otherwise like the solar installation. I'm posting this review because the normal service channels have not resolved what should be a straightforward service request. I hope someone at Oak sees this and gets it taken care of. I'll be happy to update the review when it is resolved.

Wonderful people to work with. On time, knowledgeable and friendly gentlemen technicians. Replaced…read moreour furnace when they said they would. Could not have had a better experience.

This morning my air conditioner wasn't working. It was going to be a hot muggy day. I called Hvac…read morepro and was promptly giving an appointment between 12-4p. I received a call at around 12:15 by Mark. He was on his way over. He quickly found the problem and fixed it. My air was restored by 1:15pm. Thank you guys appreciate your quick help.

Brian and The Gas Guys came highly recommended within the Lake Orion community. I'm so glad I…read morecalled! He was professional both over the phone and in person, and he and Brett were so kind to my children and dogs. They were efficient, wore masks, and were straight-forward about costs, which is what I like! They were at my house at 8am on a Saturday and had already put in a new water heater for another client before that! They are incredibly hard working and truly want to help others. I'll be using them again for any additional plumbing needs.

This company is illegally operating. The company is is not licensed and cannot get licensed so they…read morecannot pull permits. The owner has a journeyman's license which doesn't allow him to legally own or operate a plumbing business in the state of Michigan. They were investigated by the state of Michigan for operating illegally and multiple counts of fraud have been added. Once their court date comes up they will be shut down. The work they did on my gf house was horrible. We had all the copper to do the repair. They used pex. Told me nobody does copper repairs anymore (lie), also said pex is better (lie), and pex lasts longer (lie). Come to find out that the work was done by 2 apprentices without any supervision from a journeyman or master plumber which is illegal. One of the workers wasnt even a licensed apprentice when he worked on my gf house. He got his license 7 days later! Stay far away from this company.

About 1 week ago my roof top air conditioner broke. With my business being on woodward, and the…read moredream cruise right around the corner, I had to act fast. I contacted 3 companies one of which was Eller services. The other two companies told me there was nothing I could do until the end of August. Not only did Eller get me hooked up and ready within a weeks time, they beat the other two competitor prices! Ps. Ari is the guy you want to talk to, straight to the point and gets the job done. Thanks Ari. I would recommend them to anyone !

After a slight drawback with having to get our septic tank cleaned out again before they continued…read morethe pipe replacement in the basement & outback in the septic tank area. They got at the house at a reasonable time & finished what they had started & all in one day. They were here for about 5 1/2 hours give or take. Excellent work, professional & friendly.

From the women at the front desk, to the technicians and the people in the parts department, they…read moreall stive to gve you the smoothest, most professional care and expertise available for your heating and cooling needs. I needed a part ordered as quickly as possible for family coming in from oujt of town. THe furnace problem was diagnosed on a Friday and by Monday, their office called in early to have the part installed nefore my family arrived. Josh, the technician was kn owledgable and extremely thorough in figuring out the issue with the furnace, M onica and Trisha at the front desk kept me apprised of when the part might come in and made sure that it was installed on the very Monday my family arrived. THe installation wnent smoothly, it was explained clearly and eveyone involved made an upsetting situation go smoothly. I would highly recommend this company for any heating and cooling needs you might have. DEveryone involved made this ecperience a good one. I have used them many times and have found them easy to communicate with and very prompt in getting service people out to your home. Carol Lipsitt

Had this company come out in 2023 and replace an electrical outlet on the vack of my garage. Socket…read moreshorted out, shocked me when I went to uncover the box to see what was going on. Generally , the only time that happens is when there's a connection with the ground wire that is not properly installed or covered. So I turned off the power to the garage and started to remove the box. Water started coming out of the bottom of the box , which I realized at that time , they hadn't sealed the box properly. I couldn't find the receipt as to who did the work to call to come back and fix it.So I didn't want to touch any further and called a different electrical contractor. They came out and removed the box, which was severely rusted on the bottom.Actually, arc, on where the plug would go into the socket.And you couldn't even get one of the screws out because it was so badly rusted. I had to pay another almost five hundred dollars to have the box replaced again. That contractor told me, had it been done correctly.I wouldn't have had to change it for years.However, I also could have lost everything. My garage, everything in it.I have a swimming pool for what are caught my cars? My house and possibly even my life. I continued to search for the rreceopt nd finally found it. It was Royak oak , hitting and cooling , and cost me $429. So I contacted them. After several attempts speaking with rob and then the general manager Nick , I also sent them photographs and said I have the parts they said they would get back to me. Today Rob called to inform me that there's nothing they can do to help me that anything could've hit that box like a lawn mower, which is I'm because it's like 3 feet up off the ground.So I don't know how that would be possible or anything could have happened. I told him there was a garden in front of it , and he said if I were called down , they would have done the replacement for free , but there was nothing they could do about it now. Well, I don't know about anyone else, but would you want the company who almost burnt your property down to come back and redo it?? I told him that was fine.I'll file a complete with the state which is where I go next.I just wanted to leave my review, but I guess seeing how they only have 3 stars out of 5 it is very apparent that they don't put customers first. Maybe this will help to investigate their bad work ethics!

Sometimes plumbing situations don't exactly work out as you had hoped. But it's refreshing when a…read morecompany has a high level of professionalism and works with you to resolve the problem. Thank you Birmingham.

Great Customer Service with a caring initiative and timely service toward solving the problem at…read morehand.

What a great group of professionals that didn't leave us hanging over the Labor Day holiday, and…read moreworked their tails off to install a much needed new system. In all of the time that I've lived in my home, I've never had great air conditioning. Our upstairs was always warm, and cold in the winter. we need a new system, and it was in the 90's when it finally froze up for the last time. Dan made sure on the first day that we had air, I don't think he knows how much I appreciated him. The group he worked with was wonderful, I worked with Larry quite a bit regarding how to take care of my furnace and how to program our new thermostat from out of town if need be. What a nice and helpful person. I feel confident that I know what to do with my system after he went over everything with me. Also, and so importantly, you never feel like you're about to be ripped off. When an honest company, obviously I can't say enough about them. Definitely a five star operation, and I highly recommend!

Furnace went out tonight. The owner came out right away. He has to order parts, but offered us 3…read morespace heaters for the night. So nice to find a company with excellent service and integrity. Thank you!