Simply an amazing company! From the professional execution of the work, to the quality team members I have met, they are the best around!! Brian B. did an outstanding job installing our brand-new power box. He completely rewired everything with precision, ensured all components were professionally sealed, and impressively completed the entire job in just one day. His dedication, professionalism, and attention to detail truly stood out. I’m beyond happy with the work he did—he gave us peace of mind knowing our electrical system is set up to perform at its best. Thank you, Brian, for your hard work and excellence!
Best electrician in the world! Did a wonderful job and a very pleasant fellow... He’s welcome anytime!
Mike Dominic was great. Quickly identified the cause of the A/C issue and thoroughly explained the issue along with recommended fixes. Got us back up and running quickly.
I was very impressed by the communication I received to let me know who was coming to look at my air conditioner. Rob showed up nice and early and was on time. He explained everything to me and I never felt pressured to do anything today. Rob was very informative and did a great job.
Brandon returned today for follow up and as expected he was awesome. He was efficient, professional and pleasant. He worked diligently till after. 6:00 pm on a Friday night and was smiling and pleasant when he left. Such a pleasure. So very pleased with service from this organization
Mike was a perfect person to work with. Excellent. Superb Knowledge and Great Communication skills. Fixed everything without complications!!
Mike 
Jared was very professional, courteous, and explained everything with the process to help me feel good about what needed to be done.
Jared Old home, new toilet install –some surprises but as usual nothing the Mendel team couldn't handle with expertise. Job well done! 12/23/24 Furnace tune-up time. I know regular maintenance is the key to trouble free operation, so it's good to find out about little things that could become bigger issues down the line with a clear explanation. No pressure. Thanks Robbie! 6/26/25 Same old house with tired old plumbing but no worries with Mendel and Brock (with apprentice John) on the job. The leaky kitchen faucet replacement and re-piping was the first job then a bathroom sink and vanity. Expertly done and within the estimate time and charges. Great job!
David arrived and after hearing the problems offered alternatives and prices for each. The plumbing under our two sinks was a mess with a myriad of fittings, angles and incorrect heights as well as a leak. Complicating the problem was the fact that the drain pipe that went into the wall was too high, preventing the proper drainage. We also wanted a new garbage disposal. And, current plumbing code does not allow dishwashers to drain into the disposal. So, David w/ Mendel solved all these issues with the added bonus that the new plumbing looks good, simple without the myriad of connections and fittings the old plumbing had, and being lower, to code with proper drainage. Will def use Mendel again, and David if he's available.
As usual Mendel sent another great team to replace our furnace and A/C. Tim and Domonic did an awesome job. They said the job would be finished around 4pm and they were done at exactly 4pm. During the installation they kept us up to date on their progress. Thanks Tim, Domonic and Mendel Plumbing & Heating Inc. for another great job.
Tim 
$900 for a battery that we can readily buy online for $600 seems a bit steep. We will need to quote other plumbers in the future due to high price. We appreciate timely response and job done well.
Matt we had a leak in the basement they came and repaired the problem and cleaned up the area. Fast service when we needed it, thats why we use Mendel Plumbing & Heating Inc.
Great communication. Knowledgeable people who work with the customer to resolve their plumbing problems.
Professional, knowledgeable, thorough. They always explain issues and are never pushy! Friendly and efficient. I have used them on a number of occasions - some emergency, some not. I couldn't be happier.
They respond and answer your questions and really do a nice job cleaning up after themselves and treating your home like their home
Sean H. did a great job identifying the problem, and resolving the issue. Everything is perfect!
Sean I know I can count on Mendel to do quality work with excellent service in a timely manner. I used them for my HVAC & Plumbing needs.
Brock Thanks to Jesse and Dave for saving the day! Very professional and kept me in the loop on what needed to be done!!
Jesse Great guys thank you for much for your kindness and care and all the hard work that you did for me they are very professional shows you everything explains why and what needs to be done and gets it done fast fixed my dryer hot water heater furnace so no carbon monoxide leaks and fixed my drains from the roots and my basement drain and piping thank you so much love Mendel :black_heart_suit::black_heart_suit:
Brock Excellent work and very thorough. Left the work area very clean and in order. Very courteous and arrived on time.
Mendel Team, Dennis and I thank you and appreciate you coming to our rescue on Christmas eve. Your team did an awesome job and they were very patient in answering our questions and explaining the work they did. A friendly, kind and understanding team. Thank you. God bless you. Sincerely. Dennis and Mary
Cormac Greg G. called in and was raving about how great of a job Brock did on his water heater install back in October, he said he has never had any service company leave his house cleaner than when they started. He said he now wants to use us for all his plumbing work and said he knows we are more expensive but you get what you pay for.
Brock Jason was honest and professional about the options available for fixing our iron filter and water softener. We have used Mendel for years, and we have always had confidence in their service and their availability to help when needed. Thank you!
Jason I highly recommend Mendel! We needed to get our HVAC checked out and we called around for an inspection/cleaning and honestly had a hard time scheduling someone to come out in a timely manner. We were happy to learn our previous home owners used Mendel and gave them a call. The experience was seamless. The associate on the phone was kind and the associate that came out for the service was professional and timely. In addition to their team's professionalism, they were knowledgeable and thorough. If you're needing any HVAC services and you're in the St. Charles area, I definitely recommend giving Mendel a try
Client called and wanted to thank us again for fixing their water heater. Customer was really happy with her job and called once again just to say thank you!
Jason They were on time, thorough, and offered helpful explanations. I have no hesitation recommending them
Cormac Mendel came to our rescue AGAIN. Nicely done especially in a time when service is a challenge for many companies
Matt Steve L is a superb caroenter. Working with the Mendel team, all of the required services--plumbing, extra "hands" in removing existing equipment that was being replaced, and all other necessary skills--were brought in when needed. Top quality work. Beautiful results!
Steve Nick M was our technician, he showed up prompt and worked quickly. He was knowledgeable and professional, we hope we can continue to have this technician in the future, his high quality and expedient work is greatly appreciated.
Nick 