Premier Plumbing, Heating, Cooling & Electrical Service Providers You can trust

Experience Our Outstanding Level of Service and Attention


Tens of Thousands of Satisfied Clients

Our clients love us, and we have the numbers to prove it. Our NPS* score beats Southwest Airlines, Amazon, and Apple. Why is our customer satisfaction rating so high?

Because we make our clients happy. It's that simple.

Net Promoter Score

*The Net Promoter Score is an index ranging from -100 to 100, measured by a 3rd party firm, indicating the customer's overall satisfaction with a company's product or service, the loyalty to the brand, and the willingness to recommend the company’s product or service to others.

Services Mendel Plumbing & Heating Offers

From the client care professional you speak with on the phone to the technician who comes to your home, our team members focus on making the Mendel Experience as easy and enjoyable as possible.

Our main services include:

Commercial and Residential Plumbing

Commercial and Residential Plumbing

Backed by a team of technicians with hundreds of years of combined experience, Mendel provides commercial and residential plumbing services for jobs of any size in Fox Valley. We’re the St. Charles plumbers you can turn to for commercial services like design-and-build assistance, build-outs, ADA upgrades, process piping and EPA-licensed backflow prevention, as well as for residential gas line piping, installation of fixtures, winterizing or power-jetting of sewers.

Heating & Cooling: Residential and Commercial

Heating & Cooling: Residential and Commercial

From AC and furnace maintenance to the installation of in-floor interior or in-ground exterior heating, Mendel is the AC company in St. Charles that can handle any heating or cooling project. As a Bryant Factory Authorized Dealer, we are committed to providing the safest and most reliable products.

Remodeling and Electrical

Remodeling and Electrical

Electrical Installation, Repair, Remodeling & Maintenance Services

Trusted Plumbing, Heating, Cooling and Electrical Service Providers

BBB A+ Rating

Ask almost anyone in the Fox Valley, IL, community about Mendel Plumbing & Heating and, chances are, they are already familiar with the outstanding level of heating, air conditioning and plumbing services, and personal attention we provide. Since our founding in 1985, we’ve made it our mission to provide 100% satisfaction to every client, every time. That’s why, to this day, our growing family of technicians and staff continues to deliver the same commitment to the doors of homes in Fox Valley and the surrounding area. No other heating company in St. Charles has as much to offer as we do.

Come learn for yourself why the Mendel name is synonymous with plumbing, heating,cooling and electrical services you can trust!

Why Mendel Is the Plumber Clients Trust


We often hear that once a client uses Mendel, they have a hard time trusting anyone else. Coming to Mendel means coming to a plumbing, heating and cooling company committed to your 100% satisfaction. We aim to wow you with our trustworthiness, expertise and convenience — and that’s why we call what we provide "The Mendel Experience. “We're more than experts in plumbing, heating, cooling & electrical — we're passionate professionals who work hard to earn your full and total trust. Find out for yourself why we’re the most trusted service provider in the Fox Valley & surrounding area.

“The Mendel Experience” As a Team, We Promise To:

  • Take great care of you, our client, from beginning to end
  • Do the Job Right: We only do the complete, professional job. We don't believe in low-ball prices and nickel & dime adders to do the job right.
  • Let You Decide: We won't steer your decisions - rather we'll educate you on your options for you to choose what's best for you & fits your budget.
  • Make it Right: We stand behind the quality of our work and service. If you're ever less than 100% satisfied, let us know and we'll make it right.
  • Earn your trust through our integrity and honesty – every day

Top Areas Serviced by Mendel Plumbing, Heating & Air-Conditioning

Campton Hills
North Aurora

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