Family-owned for nearly 60 years. Owner Mike Jenner has personally installed over 23,000 water heaters. Real people answer 24/7 — no surcharge, no excuses.
Same-day response — real people answer right now
From a dripping faucet to a complete crawlspace re-pipe, A-1 Plumbing handles every plumbing job in Marion and the surrounding counties — quickly, honestly, and right the first time.
Mike Jenner has been turning wrenches in Marion homes since he was a teenager. Today, as owner of A-1 Plumbing, he still runs jobs personally, still shows up when he says he will, and still triple-checks every connection before he leaves. That's not marketing — that's what your neighbors say about him.
A-1 Plumbing has served Marion, Ohio since 1966. Nearly six decades later, we're still a family operation — Mike, his son Chris, and a team of seasoned technicians who understand that when your pipes fail, you need someone you can actually trust to answer the phone.
"I've known Mike for 40 years. He's been in the business for 50 years and has built a reputation that is second to none in Marion. He is a man of integrity."
— Tom Kirby, Marion, OHWe serve Marion County, Morrow County, Crawford County, Union County, and beyond — because a plumbing problem doesn't care what county you live in, and neither do we. Emergency or planned work, we treat every home like it's our own.
When you call A-1 Plumbing, you're calling the most experienced, most-reviewed plumbing company in Marion County.
Founded in 1966, A-1 Plumbing has served Marion through recessions, blizzards, and every plumbing crisis imaginable. We know Marion's homes — especially the older ones — inside and out.
We answer the phone at 2 a.m. on Christmas Eve because plumbing emergencies don't follow business hours. And we don't charge you extra for it — that's just how we do business.
Not a single 1-star or 2-star review across nearly 300 ratings. Our customers return again and again and send their family and friends our way. That record speaks for itself.
Most plumbers can't do this — they'd make you call the city and wait. Our equipment means we handle it ourselves, getting your home's water off faster so the repair begins sooner.
Most installs completed same-day. Mention this page for $50 off.
Or call (740) 382-2871 for immediate service
Marion sits on limestone bedrock, giving us some of the hardest tap water in Ohio. That mineral buildup reduces water heater efficiency and can cut its lifespan in half. Ask us about bundling a Pentair water softener with your new heater install.
Not a single 1-star or 2-star review across our entire review history. We let our customers do the talking.
"A-1 is the best plumber in Marion. This is the second emergency call we have made and I could not be more pleased. We had a water main leaking. Mike and Seth came out, took the Fourth of July off, and were back Friday to solve the problem. Got it done within 35 minutes."
"Mike and his crew replaced a water heater in my Mom's house. In and out in about 90 minutes. Mike has about 50 years of experience and said he's installed over 23,000 water heaters. They triple-checked for any water/gas leaks before they left. Professional, quick, affordable."
"We highly recommend A-1 Plumbing for your complete crawlspace plumbing replacement. Not only did they replace all of the piping under the house but they also ran a new sewer line to the septic system. Thorough, on time, and left the property clean."
"I've known Mike for 40 years. He's been in the business for 50 years and has built a reputation that is second to none in Marion. Most importantly, he is a man of great faith and he lives it — in his work and in how he treats his customers."
"Said they would be there at 8:30 a.m. — they were there at 8:25. Fixed the leak quickly. Pricing was fair and upfront. Seth was professional and explained everything he was doing. Will absolutely call again. This is how every contractor should operate."
"Mike Jenner and team are beyond a God-send. Replaced our water softener, rebuilt our sump pump setup with proper-gauge piping, and re-routed water lines — all in one day. A man of integrity. I wouldn't trust anyone else in Marion with my plumbing."
Read all 289+ reviews on Google — and then give us a call. We'd love to add your name to the list.
From your first call to a finished job, here's exactly what to expect from A-1 Plumbing.
Call (740) 382-2871 anytime — 24/7, including holidays. Or fill out our quick form and we'll call you within 15 minutes.
A licensed, experienced tech arrives on time. We assess the issue and tell you exactly what needs to be done — and how much it costs.
Upfront, flat-rate pricing. You approve before we start. No surprises, no hidden charges on the invoice — ever.
We complete the work, triple-check everything, clean up, and guarantee our workmanship. Most jobs done the same day.
We serve all of Marion County and the surrounding region. If you're within 45 minutes of Marion, we can likely be there — often faster than you'd expect.
Nearly 60 years of business is built on one thing: keeping our word. Here's our promise to every Marion homeowner.
We confirm appointments and arrive on time — not in a 4-hour window. Your time is as valuable as ours.
You'll know the full cost before we start a single task. The price we quote is the price you pay. Period.
All repair work is backed by our 1-year workmanship guarantee. If something we fixed fails, we come back and fix it — at no charge.
We don't leave until every connection, seal, and fitting has been tested. Your home is left cleaner than we found it.
Major plumbing repairs shouldn't put your family in a bind. We offer flexible financing so you can get the work done now and pay over time.
Present at time of service. One per household.
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