[about us]

We started in a garage in 1985 with one goal, earn your trust every single call.

[Intro to mendel]

About Us

Building lifelong, loyal customer relationships begins and ends with trust. The Mendel Experience is why our customers tell us they continue to use us year after year.

We hear often that once a customer uses Mendel, they find it hard to trust anyone else. We appreciate that. It’s not something we ever take for granted because we understand how fragile trust can be. Our team knows we need to work hard every day to be the firm you trust — every time you call.

[our purpose]

The Mendel Peace of Mind Experience

Mendel strives to increases your comfort level by sending you a text message once your technician has been dispatched. Via our text message, you can know with confidence who to expect in advance of their arrival.

See a picture and bio of your tech

Track their journey to you

Look for the blue truck

"Jared showed up for my emergency call on a Saturday. He was friendly, quick and professional. He happily chatted with me about my various plumbing questions while repairing my pipes. His knocked out my problem in 30 minutes and came in under the quote. Mendel is amazing and I’ll be a lifelong customer!"

Austin Stocki

[our story]

Mendel Plumbing, Heating, Cooling & Electrical was established with the intent of becoming the premier plumbing and HVAC company in the Fox Valley community. Decades ago, in a little garage in St. Charles, Mendel began combining its own brand of unmatched service with the best products available on the market. Since then, we have come to be known as the highest quality provider of repair, installation, new construction and renovation work in the Fox Valley area.

If you live or work in St. Charles, Batavia or Geneva, you are most likely familiar with our famous blue trucks. We purchased the first one back in 1985 and our fleet has continued to grow ever since. As a sign of our dedication to excellence, you’ll never see a dirty Mendel truck anywhere — we wash them every single day!

In addition to growing our fleet over the years, we have expanded our staff and our service offerings. Customers today call Mendel not only for plumbing, heating and air conditioning work, but also for top-notch electrical, generator and home remodeling projects.

[Who We Are]

Although we have come a long way from our modest beginnings in that small St. Charles garage, the integrity of our company and our team has remained intact. We still pride ourselves on providing an unmatched level of attention to each and every customer — we still strive to provide the highest-quality services in the area.

Since day one, it’s been our mission to make sure each and every customer is 100% satisfied. And to this day, our growing family of technicians and staff continues to deliver that same commitment — right to your front door. That’s the reason the Mendel name has come to be so trusted.

It is a reputation we don’t take for granted, and we work hard to continue earning your confidence, every single day. So if you’re in need of repairs or routine maintenance, or if you’re planning a new project for your home, you can depend on the skills of our trained and dedicated professionals. You can depend on Mendel to get the job done right. Period.

"Service was exceptionally honest, professional and reliable. Mendel’s service, attention to detail and “doing it right” are 110% worth the price! Couldn’t recommend them more highly."

Howard Albert

Over 5,000 reviews on google.

99%

Customer satisfaction

meet our customers

Our Promise

We hear often that once a customer uses Mendel, they find it hard to trust anyone else. We appreciate that. It’s not something we ever take for granted because we understand how fragile trust can be. Our team knows we need to work hard every day to be the firm you trust — every time you call.

As a team, we promise to:

Take great care of you

We take great care of you, 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 so we can make it right.

a team that cares

customer success

a guarantee

[our team]

Leadership

General Manager

Becca M.

Started with Mendel in 2015; Grew up in St. Charles; Has 1 dog & 2 cats; Enjoys spending time with family and friends

Owner And Ceo

Mike Mendel

Founded Mendel Plumbing & Heating in 1985; Visiting with his techs before they go off on their daily jobs is something he tries very hard to do; Enjoys spending time with family and friends; Loves dogs and farming; Likes to bike ride and look for collectible trucks and cars

President

Tom M.

Joined Mendel in 2012; Father to a daughter and 3 boys who have moved on to Michigan, Colorado, Iowa and Arizona; Loves doing anything outdoors, especially around mountains; Avid state park visitor and has travelled to nearly all 50 states; Music buff & currently learning to play acoustic guitar; Christian faith is his priority – pursues growth & learning

[our team]

Mendel Mascot

Maxine

Meet Maxine - Mendel's Mascot & Morale Booster ❤️

Maxine is the heart and tail-wagging spirit of Mendel! Always dressed to impress in her signature blue Mendel shirt and matching tutu, Maxine brings smiles wherever she goes. Her specialties include tail wags, posing for photos, and keeping the team in line with her puppy dog eyes. She's cute, she's confident, and she's here to make your day a little brighter.

Call Center And Dispatch Center Manager

Jenna R.

Joined Mendel in 2022; Expert Sudoku player; Loves anything glitter/rhinestone; Sun/Pool/Water lover; Enjoys writing poetry; Addicted to Strawberry Watermelon MIO

HR/Payroll Administrator

Kaity C

Hi! I'm the HR and Payroll Administrator at Mendel, where I've been proudly supporting our amazing team for the past 4 years. I’m passionate about creating a positive workplace experience and making sure everything runs smoothly behind the scenes. At home, I’m a proud mom of two wonderful kids—a girl and a boy— who keep life fun and busy. In my downtime, I enjoy baking, fishing with my husband, and trying out new recipes or DIY home projects.

Client Services Representative

Chanel J.

Joined Mendel in 2024; Enjoys building Lego sets; Favorite singer is Luther Vandross; Favorite snack combo is Slim Jims & cheese; Has seen every episode of Friends at least 5 times; Has 2 dogs their names are Beau & Bandit

Client Services Representative

Maura L.

Joined Mendel in August of 2024; Married to David, who's also married to golf; Has three sons and two beautiful daughters-in-law, plus two gorgeous little granddaughters; A pretty little Basset hound, named Freckles, and a cute cat, named Oreo (who looks like one!) run their home; It's a home of life-long Bears fans; Likes to arrange flowers, garden or spend time out on their boat. But she really misses enjoying a cold can of Tab; Her family appreciates military service, as one son currently serves, and her father did… Army Strong!

Dispatcher

Noel A.

Joined Mendel in 2014; Plays drums; Enjoys gardening; Loves doing anything outdoors; Horticulture enthusiast; Enjoys riding his bicycle

Electrical Service Technician

Brian B.

Brian has been in the trade for 27 years. He saw a family friend doing some electrical work when he was about 8 years old and he was hooked. He loves trouble shooting and the challenges for a good remodel. Brian has been married for 23 years and has 4 kids and 2 grandchildren. He and his wife enjoy going for walks and hanging out with their grandkids.

Electrical Service Technician

Mike Z.

Mike is a 3rd generation electrician who started with Mendel in 2006 and has been in the industry since 1989. Mike enjoys hunting, raising chickens and attending his kids' sports activities with his family.

Heating/Cooling Service Technician

Bernie G.

Heating/Cooling Service Technician

Dominic D.

Dominic is a member of Mendel's Heating & Cooling Team. He entered the trade to develop a new skill that he can use to make a positive impact by helping others. In his free time, Dom enjoys hanging out with friends & family and playing men's baseball & softball. Dom's favorite part of the job is the problem-solving aspect of his work and meeting new people!

Heating/Cooling Service Technician

Joe W.

Joe has been in the heating and air industry since 2008. He enjoys meeting you, our clients, and answering any questions you might have thoroughly.

Heating/Cooling Service Technician

Matt D.

Matt has 27 years’ experience in the heating & cooling industry and has been with Mendel since 2005. He and his wife have four kids – 3 boys and a girl.

Heating/Cooling Field Trainer

Mike S.

Mike has over 41 years’ experience in the heating & cooling industry, having begun his career in 1983. He joined the Mendel team in 2000 where he is currently the heating & cooling department field supervisor. He has been NATE certified 3 times, he holds refrigerant certifications, and is heat exchanger experts certified. He continues ongoing training with numerous courses. Mike has been married since 1984.

Heating/Cooling Field Trainer

Nick C.

Nick has 24 years experience in the HVAC industry and started at Mendel in 2006 where he is currently the Service System Training Manager. He got into the trade because he grew up without A/C. His hobby is fishing.

Heating/Cooling Service Technician

Rob R.

Rob has been in heating & air conditioning for 6 years. Prior to HVAC services, he was an auto tech/manager for 6 years. He got into this trade for two main reasons – he is a people person, and he loves to be hands on. When he was young, he always thought A/C was magic, so he wanted to learn about it! Rob is not married but in a relationship for 16 years, no kids, 2 cats. When not working, Rob enjoys pickleball, gaming, his 2 cats, home repairs/ remodeling, and working on cars.

Heating/Cooling Service Technician

Robbie A.

Robbie is a member of Mendel’s Heating & Air Conditioning Team and has 13 years of experience. He got into the trade because of the customer service aspect and he likes working with his hands. He is engaged with 2 children and enjoys fitness and collecting sports cards.

Heating/Cooling Service Technician

Rolando C.

Rolando has been in the HVAC industry for 18 years and started working for Mendel in 2023. What he loves most is helping people. He is married with 3 boys. When not working he likes spending time with family, working on cars, and riding motorcycles.

Heating/Cooling Service Technician

Tim B.

Tim has been in the HVAC field for 22 years and started working with Mendel in 2024. He attended art school, and he likes to apply his artistic abilities into his installation work, especially sheet metal work. He loves the outdoors and is a Musky fisherman. He enjoys playing guitar and spending time with his family.

Heating/Cooling Service Technician

Ugo M.

Ugo has been in the trade for 21 years and joined the Mendel team in the beginning of 2023. He got into the trade because being a HVAC technician always caught his attention. What he loves most about his work is being able to help people. He has been married for 15 years and his hobbies are fishing and enjoying family time.

Plumbing Service Technician

Aureliano T.

Aureliano started learning the business working with Mendel as a warehouse helper. Turning his focus toward the plumbing trade, through hard work and extensive training, Aureliano joined our Plumbing Technician Team in 2017.

Plumbing Service Technician

Dave B.

Dave has been a member of Mendel’s plumbing team since 2021. He is a car & motorcycle enthusiast and enjoys participating in events as a member of a local Sportsmen’s Club. In his free time, he enjoys spending time with his wife, daughter and dog.

Plumbing Service Technician

Brock D.

Brock is a second generation plumber who began his apprenticeship 1994. He married his wife in 1997, and has three boys.

Plumbing Service Technician

Cormac C.

Cormac a licensed journeyman plumber with 15 years of experience, originally from Ireland. He enjoys spending quality time with his son and wife. Some of his other interests are traveling, kayaking, hiking, biking, all Irish sports and soccer.

Plumbing Service Technician

Eric K.

Eric has been a member of Mendel’s plumbing team since 2013. Having started in the trade in 1991, he’s been “seasoned” with a wide variety of plumbing tasks. Eric resides in Huntley, where he has been a long time resident. If he isn’t with his family, you can find him doing something mechanical, such as working on his remote control or full size vehicles, or photographing motor sports events.

Comfort Advisor

Jake P.

Jake has been in the industry for 18 years working as a comfort consultant for the past 15 years. He started working in the industry because his family owned an hvac company, and he has always had interest in the trades. The thing he likes most about his job is that he is able to meet and have conversations with interesting people every day. He loves to hunt , fish, and train his dogs.

Plumbing Service Technician

Jared M.

Jared has worked with Mendel since 2014 when he started in the shop and worked his way up to being a licensed plumber. His dad was a plumber, and he is following in his footsteps. Jared likes that his job is different every day since no job is the same. When he’s not working, he likes to race dirt bikes doing flat track. He likes cars, motorcycles, ATVs, dirt bikes and basically anything with a motor. He owns a hyperactive Bernese Mountain dog and is absolutely obsessed with dogs.

Plumbing Field Manager

Jason M.

Jason has been a plumber since 2004, and joined the Mendel team in 2016. Jason is married with two daughters and one son.

Plumbing Service Technician

Jesse M.

Jesse started with Mendel in 2007. Prior to working for Mendel, Jesse worked designing and installing custom wood stairs in homes and businesses. When housing market crashed, he went back to school to become a plumber and has enjoyed it ever since.

Plumbing Service Technician

Paul S.

Paul started with Mendel in December 2005 and has over 30 years of experience in the industry.

Plumbing Service Technician

Matt W.

Matt started with Mendel in the shop before becoming an apprentice and now a licensed plumber. He loves his job because he likes making people happy. In his spare time, he likes fishing, hanging out with family and friends and traveling.

Plumbing Service Technician

Nick M.

Nick has been plumbing professionally for over 12 years.

Plumbing Service Technician

Steve A.

Steve started with Mendel in the plumbing department in 1991. Steve enjoys working in his yard and spending time with family.

Plumbing Service Technician

Ron C.

Ron started with the Mendel family working as a shop tech in September 2001, and moved to the plumbing department in 2006. He enjoys spending time camping, vacationing in Florida, working on his lawn and helping around the family farm.

Plumbing Service Technician

Sean H.

Sean has been working for Mendel since 2014 . When he’s not working, he likes to hang out with his friends and family.

Accounting Controller

Jacob V.

Joined Mendel in 2017; Father of 1 four legged doggo named Bentley; Avid fisherman; Loves being outdoors

Technician Support Administrator

Kerry G.

Joined Mendel in 1987; Wife, Mom of 2 and Nani of 2; Dog parent to a rescued, mostly Golden Retriever, named Sammy; Chicago Bears season ticket holder

Mendelcare Program Manager

Sue D.

Joined Mendel in 2017; Youngest of seven. Born in Brooklyn, raised in New York; Loves running, hot yoga and CrossFit; Runs every Saturday and Sunday morning with friends; Has run 16 marathons; Played lacrosse in college; Loves to read and watch anything on Bravo; Married for 30+ years and loves to spend time with her husband and kids especially on vacations – lots of them!!

Project Director

Scott M.

Joined Mendel in 1992; Loves doing anything outdoors and snowmobiling; Car Enthusiast; Grew up in this area; Dog parent to 2 rescue dogs; Die hard Cubs fan; Grill master; Proud grandparent of 1 beautiful grand daughter

Accounts Receivable Administrator

Liz H.

Joined Mendel in 2023; Wife and mom of 2 girls; Speaks Spanish fluently; Love her dogs; Enjoy spending time with family & friends; Loves traveling and seeing new places

Carpenter

Sam W.

Sam has been in the trades since 2010 after meeting a carpenter at the dog park, but he's been interested in building since he was a child. Growing up they built 5 new houses across the street from him and he would take wood from the dumpster and added a second floor to his playhouse! He loves being able to transform spaces through remodeling. In his free time, he enjoys riding the local paths, disc golf, and spending time with friends and family.

Warehouse/Purchasing Manager

Mark H.

Joined Mendel in 2005; Father of 1 daughter and 1 son and married for 15 years; Fisherman; Has 3 brothers; Love to be outside, grilling, playing catch with son and daughter; Loves to have music on whenever he can; Loves to watch almost all sports

Plumbing Service Technician

Tim G.

Tim is a member of Mendel’s Plumbing Team and enjoys spending free time with his wife, daughter and dog. He also enjoys cooking and traveling. Tim got into plumbing to learn a valuable skill and work with his hands everyday.

Heating/Cooling Service Technician

Brandon S.

Brandon is a member of Mendel’s Heating & Cooling Team. He has been in the trades for 13 years. He originally received his degree in health and fitness until he realized how much he enjoys working with his hands. In his free time, he loves spending time with his wife and going fishing, however his favorite activity is scuba diving! He & his wife are expecting their first child.

Field Service Manager

Ryan D.

Ryan enjoys spending free time with his family and 2 dogs. He also loves the outdoors. Hunting and fishing are his favorite hobbies.

‍

Mendel Plumbing, Heating, Cooling & Electrical is family owned and operated in Saint Charles, IL.
Proudly serving homes in the Fox Valley area since 1985

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