- The Most Trusted Local, Professional Home Service Experts in Metro East Illinois
Plumbing, Heating, Cooling, Sewer & Drain Experts in Alton, Edwardsville & O Fallon IL
Cardinal Plumbing Co. provides trusted plumbing, heating, cooling, sewer, drain, and bathroom remodeling services for homes and businesses across Alton, Edwardsville, O Fallon, and surrounding Metro East Illinois communities. With years of local experience, our team delivers reliable solutions — from emergency plumbing repairs and AC service to sewer line replacement, drain cleaning, and bathroom renovations.
Service With Excellence Guaranteed.
The Cardinal Home Service Advantage for Plumbing, Heating, Cooling, Sewer & Bathroom Remodeling
24/6 Emergency Plumbing, HVAC & Sewer Services
When urgent home service problems can’t wait, Cardinal is ready. From burst pipes and sewer backups to AC failures and heating emergencies, our experienced team provides rapid response solutions across Alton, Edwardsville, O Fallon, and surrounding Metro East communities. We arrive prepared to restore comfort, safety, and peace of mind when you need it most.
Licensed, Certified & Skilled Home Service Professionals
Our licensed technicians and specialists are trained across plumbing, heating, cooling, sewer, drain, and bathroom remodeling solutions. Whether you need furnace repair, sewer line replacement, or a full bathroom upgrade, Cardinal delivers expert craftsmanship backed by ongoing education, advanced tools, and a commitment to long-term solutions for Illinois homes and businesses.
Customer-First Service With Honest Solutions
At Cardinal, we believe trust starts with transparency. That means clear communication, fair pricing, and personalized recommendations for every plumbing, HVAC, sewer, drain, or remodeling project. From your first call to project completion, our team prioritizes honest service, dependable workmanship, and solutions designed around your home, budget, and long-term comfort.
What Your Neighbors Say...
EXCELLENT Based on 526 reviews Posted on Steven BooherTrustindex verifies that the original source of the review is Google. Tyler and Corbin were very precise and handle our plumbing issues swiftly and hopefully successfully.Posted on Ashton HackettTrustindex verifies that the original source of the review is Google. Tyler did a great job with the plumbing and remodel of my bathroom!Posted on Lynn SchneltenTrustindex verifies that the original source of the review is Google. Needed help in a hurry, as well as efficiently and Cardinal Plumbing delivered. Don't hesitate to call them.Posted on Mary Beth BlantonTrustindex verifies that the original source of the review is Google. Jacob and Brandon were very professional and through with there work I would recommend them to anyone thanks guys 🙂Posted on Janise RasberryTrustindex verifies that the original source of the review is Google. Jacob was very polite, professional, informative, and thorough. He went, in my opinion, beyond the job requested by me to insure the job be done correctly this time as I've had 2 previous plumbers prior to Jacob's call w/I the past 2 yrs. Very thorough, having to climb into my crawl space to investigate the issue further. I was very pleased with his obliging me with my desire to have the job done correctly and he was very pleasant. Thank you.Posted on Patricia RhodesTrustindex verifies that the original source of the review is Google. Cardinal Plumbing is FANTASTIC!! The technician James quoted the work on 4/8/26 then Ryan came out today 4/16 as promised. The work looks EXCELLENT!! It is blessing to have this company that has AWESOME staff/technicians/owners that are PROFESSIONAL and TALENTED!! Thank you Cardinal Plumbing!!!Posted on Linda A.Trustindex verifies that the original source of the review is Google. I originally chose Cardinal Plumbing because I needed a gas line updated. I have since had them repair or replace ( water heater) many other plumbing problems in my 75 year old home. They are always prompt and pleasant and dependable.Posted on Dale EmerickTrustindex verifies that the original source of the review is Google. Guys did a great job,installing the new sewer line. Cleaned up after,and smoothed out the dirt. Didn't take very long.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
The Trusted Plumbing, Heating, Cooling & Sewer Experts Your Alton, Edwardsville & O Fallon Property Deserves
When your home or business needs more than a temporary fix, Cardinal Plumbing Co. delivers trusted plumbing, heating, cooling, sewer, drain, and bathroom remodeling solutions built to last. Proudly serving Alton, Edwardsville, O Fallon, and surrounding Metro East Illinois communities, our experienced team handles everything from emergency plumbing repairs and AC service to sewer line replacement and full bathroom upgrades. We combine expert craftsmanship, responsive service, and long-term solutions to keep your property safe, comfortable, and running at its best.
Emergency Services
Having an urgent plumbing, heating, cooling or sewer problem that can’t wait?
- Why Choosing Our Services
Expert Heating, Cooling, Sewer, Bathroom Remodeling & Plumbing Services
Heating & Cooling
Stay comfortable in every season with Cardinal’s expert heating and cooling services. From AC repair and installation to furnace maintenance and indoor air quality solutions, our team keeps homes across Alton, Edwardsville, O Fallon, and Metro East Illinois running efficiently year-round.
Sewer & Drain
From drain cleaning and hydro jetting to sewer line repair, replacement, and camera inspections, Cardinal provides dependable sewer and drain solutions designed to protect your home from costly backups, clogs, and long-term damage.
Plumbing Services
From routine maintenance and pipe repairs to water heaters, sump pumps, and emergency plumbing, Cardinal delivers comprehensive plumbing services that keep your home or business running smoothly.
Bathroom Remodeling
Upgrade your home with bathroom remodeling solutions designed for beauty, comfort, and functionality. Whether you need a fast bath upgrade or a full transformation, Cardinal delivers expert craftsmanship tailored to your lifestyle and budget.
- (618) 215-3780
Why Professional Plumbing, HVAC & Sewer Expertise Matters
Choosing an inexperienced contractor can lead to recurring issues, unsafe repairs, rising costs, and unnecessary stress. Cardinal Plumbing Co. protects your home through expert plumbing, heating, cooling, sewer, drain, and bathroom remodeling solutions backed by quality workmanship, transparent pricing, and code-compliant service. From emergency repairs to full system upgrades, our experienced team delivers dependable results done right the first time.
- How It Works
Your Cardinal Home Service Journey

Personalized Consultation
Connect with Cardinal online or by phone to discuss your plumbing, heating, cooling, sewer, drain, or bathroom remodeling needs. Our knowledgeable team takes the time to understand your goals, concerns, and property needs so we can recommend the right solution and schedule service at your convenience.

Expert Inspection & Customized Solutions
Our licensed professionals arrive on time, fully equipped, and ready to assess your plumbing, HVAC, sewer, drain, or remodeling project. Using advanced diagnostics and proven expertise, we identify root causes, explain your options clearly, and provide transparent recommendations with upfront pricing.

Precision Service & Lasting Results
From repairs and replacements to installations and remodeling, Cardinal delivers high-quality workmanship using trusted materials, expert techniques, and customer-first service. We protect your property, complete every project with care, and ensure results built for long-term comfort, safety, and performance.
By following Cardinal’s proven process, your plumbing, heating, cooling, sewer, drain, and remodeling needs are handled efficiently, professionally, and with long-term results in mind. We believe in doing the job right the first time — saving you time, stress, and future repair costs.
Our Commitment to Trusted Plumbing, HVAC, Sewer & Home Services in Metro East Illinois
At Cardinal, we believe in building lasting relationships through exceptional workmanship, honest business practices, and dependable home service solutions. From plumbing and heating to cooling, sewer, drain, and bathroom remodeling, every project reflects our commitment to improving homes and businesses across Alton, Edwardsville, O Fallon, and surrounding Metro East Illinois communities.
Our Trusted Partners
The Brands We Work With & Believe In...










Take Action Today for Expert Plumbing, HVAC, Sewer & Bathroom Solutions
Don’t let plumbing, heating, cooling, sewer, or bathroom issues disrupt your comfort or property. Cardinal delivers trusted solutions for homeowners and businesses across Alton, Edwardsville, O Fallon, and Metro East Illinois — from emergency repairs and system upgrades to sewer line replacement and bathroom remodeling. When you need dependable results, choose the team committed to doing it right the first time.
- Home Service FAQs
Answers to Illinois Homeowner Plumbing, HVAC, Sewer & Bathroom Questions
Home service issues can feel overwhelming, but the right information helps homeowners make smarter decisions. This FAQ section covers common plumbing, HVAC, sewer, drain, and bathroom remodeling questions to help Illinois homeowners protect their comfort, property, and long-term investment.
Clogged drains, sewer backups, leaking pipes, low water pressure, water heater failures, sump pump issues, and damaged sewer lines are some of the most common home service problems Illinois homeowners encounter. Routine maintenance, professional inspections, and early repairs can help prevent minor issues from turning into costly emergencies.
Common warning signs include recurring drain clogs, sewage odors, slow drains throughout your home, soggy patches in your yard, foundation cracks, or frequent sewer backups. Minor issues may only require targeted repairs, but severe pipe damage, root intrusion, corrosion, or collapsed lines may require full sewer line replacement. A professional camera inspection can help determine the best long-term solution.
If your AC or furnace is under 10–15 years old, has minor issues, and repairs are cost-effective, repair is often the best option. However, frequent breakdowns, rising energy bills, uneven temperatures, or major component failures may make replacement the smarter investment. A professional HVAC assessment can help you compare repair costs, efficiency, and long-term savings.
Homeowners should schedule annual HVAC tune-ups, water heater inspections, drain cleaning as needed, sewer inspections when warning signs appear, sump pump testing, and routine plumbing evaluations to catch leaks or wear early. Preventative maintenance helps improve efficiency, extend system lifespan, and reduce the risk of unexpected repairs.
- Blogs
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