Korrect Plumbing, Heating & Air Conditioning roadside sign on the lawn at the Dayton office

Korrect Plumbing: Dayton's Company Since 1950

Fourth-generation, family-owned, and faith-guided. Korrect Plumbing, Heating & Air Conditioning has served the Dayton area for 75 years with honest work, fair pricing, and standards that have never been compromised.

Four Korrect team members in the Dayton office in front of the company mission wall
75 Years. No Shortcuts.

A Family Business. A Community Standard.

Korrect Plumbing, Heating & Air Conditioning, Inc. was founded in Dayton, Ohio in September 1950 as a family company grounded in Christian values. The name was spelled with a K on purpose: to stand out, and to mean something. For Ivan and Edwin, Korrect’s name represented a standard that we uphold seventy-five years later.

We’re a fourth-generation family business. That means the standards set by the founders were passed down through the family, reinforced across every leadership transition, and held firm against every market pressure that pushed competitors toward shortcuts, upsells, and surge pricing. We’ve watched private equity firms buy up many of the local names Dayton once trusted. We’ve chosen a different path.

Today, Korrect employs more than 60 licensed field technicians serving homeowners and businesses within approximately 20 to 25 miles of downtown Dayton. Our technicians are NATE-certified, not commission-based, and trained to diagnose accurately rather than recommend broadly.

We serve residential and commercial customers across plumbig, HVAC, drain solutions, water treatment, and bathroom remodeling.

Being local isn’t a tagline for us. It means we know the homes, the water conditions, the sewer systems, and the seasonal demands specific to this region. It means we’re accountable to this community long after the invoice is paid. Our reputation was built here, one honest job at a time, and we protect it the same way.

That’s what 75 years of doing this work the right way looks like. That accountability doesn’t expire. When a Korrect technician finishes a job, the work is backed by the same name and the same family that has been serving this community for 75 years.

We aren’t a franchise. We aren’t a portfolio company. We’re a local business that lives and works here, and we’ll be here long after the invoice is paid. That’s the Korrect standard, and protecting it is the responsibility of every person on our team.

There’s a generational knowledge of Korrect in this community that can’t be manufactured or purchased. Homeowners who called us twenty years ago refer their children to us. Businesses that hired us for a single commercial job have kept us as their plumbing and HVAC partner ever since.

That’s the kind of trust that’s built one honest interaction at a time, across 75 years of showing up and doing the work right.

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How Korrect Was Built to Last

From a family plumbing company founded on faith and craftsmanship to one of the Miami Valley's most trusted HVAC and plumbing operations, the Korrect story is one of consistent standards across generations.

1950
1960s–1970s
1965
1980s–1990
1996
1996-2010
2010–2021
2011
2016
2017
2021
2026
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Korrect's founder standing beside his 1949 Chevrolet work truck
1950

Founding

N. Ivan Patterson and C. Edwin Hunn establish Korrect Plumbing, Heating & Air Conditioning, Inc. in Dayton, Ohio. The company incorporates in 1954, planting roots that will define four generations of family ownership.

Thirteen Korrect Plumbing employees in white shirts outside the brick shop in the 1960s
1960s–1970s

Building the Team

Korrect grows steadily through the sixties and seventies, expanding its workforce and deepening its presence in the Dayton community. These decades lay the foundation for the company's operational culture and reputation.

Korrect's first office, a small white storefront with a plumbing and heating street sign
1965

First Office

 Korrect establishes its first dedicated office location—a tangible milestone marking the company's growth from a small family trade operation into a structured, professional service business.

Korrect Plumbing Co. crew in green uniforms posed behind the company sign in the 1980s
1980s–1990

Expansion Era

Korrect expands its physical footprint and operational capacity through the eighties, culminating in a warehouse expansion in 1990. Growth in this era reflects the company's increasing demand and long-term investment mindset.

Older couple in a formal studio portrait marking Ivan Patterson's retirementFive family members in formal attire at Ivan Patterson's retirement banquet
1996

Ivan Patterson's retirement

Ivan Patterson retires, followed by Dave Puderbaugh in 2008. Two leadership transitions in just over a decade reflect the company's ability to evolve while staying true to its founding values and family character.

Dan, Korrect Plumbing team member, in a white company shirt and tie
1996-2010

Dan Patterson, Ivan Patterson's son, becomes President of Korrect

Dan Patterson, son of Ivan Patterson, steps into the role of President of Korrect, continuing the family’s legacy of leadership and dedication to the company. His appointment marks a new chapter in Korrect’s history while preserving the values, service, and commitment that have guided the business for generations.

Smiling Korrect Plumbing, Heating & Air team member in a black company polo
2010–2021

Martha takes the presidency

Martha, daughter of Ivan Patterson, steps into the presidency, Korrect adds drain cleaning services, and the company acquires Tobias—a fellow Dayton institution. A concentrated window of growth that reshapes the company's scope and legacy.

Vintage Chevrolet pickup lettered 'S.F. Tobias Repairs, ME 5602' with a man at the wheel
2011

Acquisition of Tobias Heating and Air Conditioning — start of Korrect's HVAC service line

The acquisition of Tobias Heating and Air Conditioning marked an important milestone in Korrect’s history, expanding its trusted home-service expertise beyond plumbing and into heating and cooling. This strategic step established Korrect’s HVAC service line and allowed the company to provide customers with dependable installation, maintenance, and repair solutions for year-round indoor comfort.

Aerial view of Korrect's brick office with white company pickup trucks in the lot
2016

New Home

Korrect moves into a new office building, marking a significant investment in the company's future and providing a modern operational base to support its growing team and expanding service area.

Granite, marble and quartz countertop samples on a showroom display rack
2017

Custom Marble Solutions

Korrect launches a marble and stone solutions offering, diversifying beyond core plumbing and HVAC trades. The expansion reflects the company's commitment to whole-home service and its willingness to grow with customer needs.

Two Korrect leaders handing over a 'President' desk nameplate in the office
2021

New Leadership

Nathan and Josh, grandsons of Ivan Patterson, step into leadership roles, representing the next generation of family ownership. The handoff marks a clear generational milestone—new names at the helm, same standards at the core.

Three technicians in black uniforms in front of red CPRforPIPES.com pipe-repair trucks
2026

Complete Pipe Repair Joins the Family

Korrect acquires Complete Pipe Repair, adding CPR's specialized capabilities to its growing portfolio. The move positions Korrect for its next chapter—expanding services while staying rooted in Dayton and the values that started it all.

Korrect technician in a stocked service van beside HVAC gauges and refrigerant hoses
Equipment You Can Trust.

Dayton's Carrier Authorized Dealer

As a Carrier Authorized Dealer, Korrect has direct access to Carrier's full line of heating and cooling equipment, one of the most trusted names in the HVAC industry worldwide. That authorization isn’t given to every company that calls themselves an HVAC contractor. It requires demonstrated technical competence, ongoing training, a commitment to customer satisfaction, and the infrastructure to properly install and service Carrier systems.

For Dayton homeowners and businesses, the Carrier Authorized Dealer designation means the equipment we install is backed by the full Carrier warranty and serviced by technicians trained to Carrier's standards. It also means access to financing options through Carrier's programs for homeowners who qualify.

In 2018, Korrect received the Carrier President's Award, one of the highest honors Carrier bestows on its dealer network. It reflects not just technical capability, but the overall customer experience: showing up on time, completing work correctly, and leaving customers with confidence that their investment was handled by professionals who know what they’re doing. That authorization matters for Dayton homeowners in practical terms. It means the warranty on a Carrier system installed by Korrect is backed fully and without gaps, because the installation was performed by a dealer that Carrier has vetted and trained. It means if something goes wrong with the equipment, the process for warranty service is straightforward rather than disputed. It means the technicians who installed your system understand it at a level that non-authorized dealers simply can’t match. For homeowners making a significant investment in a heating or cooling system, the distinction between an authorized Carrier dealer and a company that merely sells Carrier equipment is real, and it matters for the long-term performance and protection of that investment. Carrier's authorization also requires ongoing compliance, and dealers are reviewed against performance standards and customer satisfaction metrics. Korrect has maintained that authorization continuously and earned the 2018 President's Award, which isn’t given to every authorized dealer. It’s reserved for those who perform at the top of the Carrier dealer network in terms of customer experience, technical execution, and business standards. That distinction reflects how seriously Korrect takes the relationship with both Carrier and with the homeowners who trust us to install their equipment.

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Local Means Something.

Two Korrect team members talking and laughing outside the shop beside a company van
Korrect technicians gathered outside the Dayton shop and storage units beside a service van
Green Korrect-branded rubber duck on a marble shower shelf below a bottle of shampoo
Worker in a respirator and safety glasses spray-coating a large mold in the fabrication shop
Korrect technician shaking hands with a smiling homeowner inside her home
Worker in a cap and respirator cutting a panel with a circular saw outside the shop
Craftsman smoothing material over long casting molds beside white vanity tops in a fabrication shop
Aerial view of Korrect's Dayton campus: office, warehouses, storage units and service van fleet
Korrect Impact Award glass trophies: 2023 Plumbing Team and 2025 Apprentice
Licensed. Certified. Trusted.

Credentials That Back the Work

Every Korrect technician is fully licensed and insured in the state of Ohio. Our HVAC technicians are NATE-certified, which means they’ve passed rigorous industry examinations and demonstrated competency in heating and cooling system installation, service, and diagnostics. NATE certification is the HVAC industry's most recognized professional credential, and it matters because certified technicians make fewer mistakes, solve problems faster, and install systems correctly the first time.

As a Carrier Authorized Dealer, Korrect has access to Carrier's full product line and technical resources. We’re also affiliated with leading industry organizations that hold our team to current code standards, safety practices, and technical best practices across both plumbing and HVAC disciplines.

These credentials aren’t framed on a wall. They’re the foundation of how we work every day, in your home, on your equipment, and behind every recommendation we make. That matters for homeowners in a straightforward way: the person working in your home has passed the examinations, holds the credentials, and carries the insurance coverage required to do this work professionally and to code. Many contractors operate without full licensure or with technicians who aren’t properly credentialed. Korrect doesn’t. NATE certification, in particular, is the benchmark for HVAC technical competence. A NATE-certified technician has demonstrated knowledge across system diagnostics, installation standards, and efficiency optimization through independent examination, not just company training. That means fewer mistakes, faster and more accurate diagnoses, and installations that are done correctly the first time. Our affiliations with industry organizations keep our team current with code updates, safety standards, and technical advances. We invest in ongoing education for our technicians because the standard we hold isn’t static, and staying at the front of this industry requires continued commitment. These aren’t credentials we mention to impress customers. They’re the infrastructure that makes the work reliable. For homeowners, this matters in a simple way: the person working in your home has demonstrated competency through independent credentialing, not just internal company training. There’s a significant difference between a technician who passed industry examinations and one who simply completed an employer's onboarding course. Korrect invests in the credentials because they reflect the standard of work we’re committed to delivering, every time, in every home.

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What Our Clients Say About Us

See why Dayton homeowners and businesses trust Korrect for prompt, professional plumbing, heating, and air service backed by decades of reliable workmanship and friendly care.

Reviews From Our Clients

Another exceptional job!
John Green
September 7, 2026
Another exceptional job!
John Green
September 7, 2026
Nick came over to resolve an issue from a condensate pump installation and worked dilegently, crawling through a hot attic several times to fix an issue with the hose set-up. Korrect has handled multiple jobs in our home, including replacing a pump, an HVAC blower and a water heater all jobs well done, follow through if an issue, from the first phone call in with admin/the scheduler to the technician. Sandi Y.
Nemesis null
September 4, 2026
Nick came over to resolve an issue from a condensate pump installation and worked dilegently, crawling through a hot attic several times to fix an issue with the hose set-up. Korrect has handled multiple jobs in our home, including replacing a pump, an HVAC blower and a water heater all jobs well done, follow through if an issue, from the first phone call in with admin/the scheduler to the technician. Sandi Y.
Nemesis
September 4, 2026
Expert efficient professional service. We wouldn't use anyone else.
Walter Hartel
September 3, 2026
Honest. Another company told me I needed a whole new HVAC system. Around $20,000. Korrect got me back up and running for under $1,000.
Nathan Bush
September 2, 2026
Honest. Another company told me I needed a whole new HVAC system. Around $20,000. Korrect got me back up and running for under $1,000.
Nathan Bush
September 2, 2026
Pat P
September 2, 2026
Korrect is my go-to plumbing service. They can do same day installations where other companies needed significant lead times.
Geoffry Orr
August 29, 2026
Korrect is my go-to plumbing service. They can do same day installations where other companies needed significant lead times.
Geoffry Orr
August 29, 2026
⭐️⭐️⭐️⭐️⭐️ **Excellent Service from Korrect Plumbing!** We had been dealing with a leaking Wolverine Brass shower faucet, and the cartridge needed to be replaced. I believe the water in our neighborhood is very hard, so I was concerned that the old cartridge would be very difficult to remove because of mineral buildup accumulated over the years. Korrect Plumbing sent Mr. Patrick and Mr Travis to our home this morning, arriving right on time between 8:00 and 9:00 a.m. They did an excellent job! Both Mr. Patrick and Mr. Travis were professional, knowledgeable, courteous, and very careful with the repair. They worked efficiently and did a wonderful job replacing the cartridge. It was clear that they knew exactly what they were doing. We are very happy with the work and so relieved to finally have our leaking shower faucet repaired. We truly appreciate their time, effort, and expertise. A special Thank You to Ms. Kerri for arranging everything and for sending such wonderful technicians to our home. She was so helpful throughout the process, and I really appreciate her excellent customer service. And of course, a big Thank You to Mr. Patrick and Mr. Travis for doing such a great job! We are very pleased with the repair and truly appreciate everyone's help. Korrect Plumbing is lucky to have such great people on their team. I would definitely recommend Korrect Plumbing to anyone looking for professional, reliable, and friendly plumbing service. **Five stars all the way! ⭐️⭐️⭐️⭐️⭐️😊**
Xiaomei Zhang
August 28, 2026
⭐️⭐️⭐️⭐️⭐️ **Excellent Service from Korrect Plumbing!** We had been dealing with a leaking Wolverine Brass shower faucet, and the cartridge needed to be replaced. I believe the water in our neighborhood is very hard, so I was concerned that the old cartridge would be very difficult to remove because of mineral buildup accumulated over the years. Korrect Plumbing sent Mr. Patrick and Mr Travis to our home this morning, arriving right on time between 8:00 and 9:00 a.m. They did an excellent job! Both Mr. Patrick and Mr. Travis were professional, knowledgeable, courteous, and very careful with the repair. They worked efficiently and did a wonderful job replacing the cartridge. It was clear that they knew exactly what they were doing. We are very happy with the work and so relieved to finally have our leaking shower faucet repaired. We truly appreciate their time, effort, and expertise. A special Thank You to Ms. Kerri for arranging everything and for sending such wonderful technicians to our home. She was so helpful throughout the process, and I really appreciate her excellent customer service. And of course, a big Thank You to Mr. Patrick and Mr. Travis for doing such a great job! We are very pleased with the repair and truly appreciate everyone's help. Korrect Plumbing is lucky to have such great people on their team. I would definitely recommend Korrect Plumbing to anyone looking for professional, reliable, and friendly plumbing service. **Five stars all the way! ⭐️⭐️⭐️⭐️⭐️😊**
Xiaomei Zhang
August 28, 2026
They actually came out a day early after it worked for me. Their info was welcoming and when there was no fix to my drains they did not try to sell anything and advised to monitor it
Phil Levin
August 28, 2026
They actually came out a day early after it worked for me. Their info was welcoming and when there was no fix to my drains they did not try to sell anything and advised to monitor it
Phil Levin
August 28, 2026
I have been using Korrect for 30 to 40 years. They are exceptional. Great people, service and care about providing top quality results. They are just wonderful people. This time are service person was Trevor and he was outstanding.
Rick Stover
August 27, 2026
I have been using Korrect for 30 to 40 years. They are exceptional. Great people, service and care about providing top quality results. They are just wonderful people. This time are service person was Trevor and he was outstanding.
Rick Stover
August 27, 2026
Repairman was very knowledgeable and efficient.
Jeff Konves
August 25, 2026
Repairman was very knowledgeable and efficient.
Jeff Konves
August 25, 2026
I chose Korrect because of their Christian faith and knowing they would do a professional job. Had a gas water heater installed and Reagan(installer) did a complete and thorough job & answered all of my questions. Very happy selecting this company for the job.
Craig DeNise
August 25, 2026
I chose Korrect because of their Christian faith and knowing they would do a professional job. Had a gas water heater installed and Reagan(installer) did a complete and thorough job & answered all of my questions. Very happy selecting this company for the job.
Craig DeNise
August 25, 2026
Landon did a great job is fixing our shower! Highly recommend!
Kevin Wickenheiser
August 24, 2026
Landon did a great job is fixing our shower! Highly recommend!
Kevin Wickenheiser
August 24, 2026
Josh did a great job. He was polite, answered all my questions. He made sure things were clean and orderly when he left
Barbara Mengwasser
August 21, 2026
First time dealing with Korrect and was very pleased. I called asking for a water heater installation estimate and received it over the phone. Two days later the tank installed without any issues. It was refreshing to deal with a company that doesn’t try to upsell and push extended warranties. I will definitely call upon Korrect for future plumbing projects.
Dean Peters
August 20, 2026
First time dealing with Korrect and was very pleased. I called asking for a water heater installation estimate and received it over the phone. Two days later the tank installed without any issues. It was refreshing to deal with a company that doesn’t try to upsell and push extended warranties. I will definitely call upon Korrect for future plumbing projects.
Dean Peters
August 20, 2026
Austin showed up on time and installed a new faucet and reverse osmosis system under our sink. He was very knowledgeable of the work we needed performed and completed it very quickly. Thanks Austin
John Ransom
August 20, 2026
Austin showed up on time and installed a new faucet and reverse osmosis system under our sink. He was very knowledgeable of the work we needed performed and completed it very quickly. Thanks Austin
John Ransom
August 20, 2026
We needed a bath tub/shower conversion. Our estimator, Brad arrived on time, assessed our options without ANY high pressure! He brought us in to the showroom to see exactly what we were going to buy. He promised a two day demolish & install, and he was right on the money! Ryan & Tucker the demo/install team were absolutely awesome! Very kind, courteous, professional and highly proficient in making our project perfect!
Dennis Stewart
August 19, 2026
We needed a bath tub/shower conversion. Our estimator, Brad arrived on time, assessed our options without ANY high pressure! He brought us in to the showroom to see exactly what we were going to buy. He promised a two day demolish & install, and he was right on the money! Ryan & Tucker the demo/install team were absolutely awesome! Very kind, courteous, professional and highly proficient in making our project perfect!
Dennis Stewart
August 19, 2026
Had a great experience with Korrect plumbing. Will absolutely be my first stop with any future plumbing issues. Great technician and great prices. Thanks
David Smith
August 19, 2026
Had a great experience with Korrect plumbing. Will absolutely be my first stop with any future plumbing issues. Great technician and great prices. Thanks
David Smith
August 19, 2026
Austin did great job
Michael Fox
August 19, 2026
Austin did great job
Michael Fox
August 19, 2026
No issues. Good communication
Larry Litscher
August 18, 2026
Always professional and friendly.
Denise Davis
August 18, 2026
Sean (I hope I’m spelling his name correctly) was awesome and professional! We called on a weekend and he arrived within an hour. Every step he took was explained and clarified. I really appreciated his efficiency and professionalism.
Ravila Akhmedova
August 15, 2026
Sean (I hope I’m spelling his name correctly) was awesome and professional! We called on a weekend and he arrived within an hour. Every step he took was explained and clarified. I really appreciated his efficiency and professionalism.
Ravila Akhmedova
August 15, 2026
Zach was amazing extremely courteous, very professional, prompt, did a fantastic job.
Tim Friz
August 12, 2026
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Two blown-glass Korrect Impact Award trophies on a counter below the vintage company sign