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Verified Reviews for Gas Leak Repair pros in Mount Vernon, IL

*The Angi rating for Gas Leak Repair companies in Mount Vernon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Gas Leak Repair needs.

*The HomeAdvisor rating for Gas Leak Repair companies in Mount Vernon, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Gas Leak Repair needs.

Last update on November 13, 2025

Find Gas leak repair technicians in Mount Vernon

R.J. O'Neil, Inc.

1.00(
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R.J. O'Neil, Inc.

1.00(
1
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99 years of experience

R.J. O’Neil, Inc. is a small shop with a lot of know-how. Since 1926, R. J. O’Neil, Inc. has been serving Montgomery, IL and the surrounding area. With a team of talented and skilled workers who can solve any plumbing or HVAC issue, it won’t matter if you own a business or if your problem is at home. From installing a faucet in your home or school to plumbing entire buildings, they have done it all. Always reliable and always on call, R.J. O’Neil, Inc. is the first choice in service and ability. Call us at (630)906-1300, email us at [email protected], or feel free to stop in at 1125 S. Lake Street, Montgomery, IL 60538.

"As a small business owner, I strongly caution others against this HVAC/R company. In over 10 years, they?ve been the least trustworthy and poorest performing contractor I?ve worked with. We experienced repeated service issues, a 25% rate hike without notice, ignored emails, and unreturned quote requests. Worse, we were billed for work that wasn?t done?confirmed twice, including by a third-party inspection with photos. Even when confronted, they deflected and delayed for months. We had to hire another company. They also mis-sized a walk-in freezer due to bad measurements and blamed their supplier. When shown proof it was undersized, they argued with no solution. They later mismeasured again on a replacement bid. Their attitude throughout was defensive, unprofessional, and dismissive. If something goes wrong?and it likely will?they will not stand behind their work. Save yourself the frustration and look elsewhere."

Jonathan D on July 2025

R.J. O’Neil, Inc. is a small shop with a lot of know-how. Since 1926, R. J. O’Neil, Inc. has been serving Montgomery, IL and the surrounding area. With a team of talented and skilled workers who can solve any plumbing or HVAC issue, it won’t matter if you own a business or if your problem is at home. From installing a faucet in your home or school to plumbing entire buildings, they have done it all. Always reliable and always on call, R.J. O’Neil, Inc. is the first choice in service and ability. Call us at (630)906-1300, email us at [email protected], or feel free to stop in at 1125 S. Lake Street, Montgomery, IL 60538.

"As a small business owner, I strongly caution others against this HVAC/R company. In over 10 years, they?ve been the least trustworthy and poorest performing contractor I?ve worked with. We experienced repeated service issues, a 25% rate hike without notice, ignored emails, and unreturned quote requests. Worse, we were billed for work that wasn?t done?confirmed twice, including by a third-party inspection with photos. Even when confronted, they deflected and delayed for months. We had to hire another company. They also mis-sized a walk-in freezer due to bad measurements and blamed their supplier. When shown proof it was undersized, they argued with no solution. They later mismeasured again on a replacement bid. Their attitude throughout was defensive, unprofessional, and dismissive. If something goes wrong?and it likely will?they will not stand behind their work. Save yourself the frustration and look elsewhere."

Jonathan D on July 2025

Custom Construction & Remodeling

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2
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Custom Construction & Remodeling

1.00(
2
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27 years of experience

Custom Construction is a Licensed and Insured FULL SERVICE DESIGN and BUILD Company and General Contractor with a wide range of experience. Interior to Exterior, from A to Z one call does it all. Let our dedicated team of experts make your dreams come true. We handle all types of remodeling. We accept all major credit cards and offer financing for quailifed clients. Emergency 24/7 services available

Custom Construction is a Licensed and Insured FULL SERVICE DESIGN and BUILD Company and General Contractor with a wide range of experience. Interior to Exterior, from A to Z one call does it all. Let our dedicated team of experts make your dreams come true. We handle all types of remodeling. We accept all major credit cards and offer financing for quailifed clients. Emergency 24/7 services available

Avatar for McDonagh & Sons Plumbing & Sewer Inc

McDonagh & Sons Plumbing & Sewer Inc

4.86(
51
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McDonagh & Sons Plumbing & Sewer Inc

4.86(
51
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Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

Mcdonagh & sons plumbing & sewer takes great pride with 15 years of experience! We are honest, reliable, genuine and trustworthy! We are constantly referred by our customers because of our great service and dedication to meet their needs! We offer free estimates! "anything plumbing, anything sewer, any time". Ertain areas are to subject a service fee *prices may vary. Discounts can not be combined, unless noted. Award winning. Additional dba - mcdonagh & sons plumbing and sewer.

Mcdonagh & sons plumbing & sewer takes great pride with 15 years of experience! We are honest, reliable, genuine and trustworthy! We are constantly referred by our customers because of our great service and dedication to meet their needs! We offer free estimates! "anything plumbing, anything sewer, any time". Ertain areas are to subject a service fee *prices may vary. Discounts can not be combined, unless noted. Award winning. Additional dba - mcdonagh & sons plumbing and sewer.

Heartland Mechanical Contractors

No reviews yet

Heartland Mechanical Contractors

No reviews yet
78 years of experience

HMC is a commercial HVAC and piping contractor with over 5 decades of experience. We design, build, install and service heating, cooling and indoor air quality systems ranging in size from single family homes up to hospitals, colleges and factories.

HMC is a commercial HVAC and piping contractor with over 5 decades of experience. We design, build, install and service heating, cooling and indoor air quality systems ranging in size from single family homes up to hospitals, colleges and factories.

Avatar for Ben Cordes Plumbing

Ben Cordes Plumbing

5.00(
1
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Ben Cordes Plumbing

5.00(
1
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Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

A small family owned business with more than 10 yrs experience. We strive to make sure repairs or new work are completed as economical as possible. Because we try to keep a low overhead, that allows us to keep prices low.

A small family owned business with more than 10 yrs experience. We strive to make sure repairs or new work are completed as economical as possible. Because we try to keep a low overhead, that allows us to keep prices low.

Mississippi Valley Construction

5.00(
5
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Mississippi Valley Construction

5.00(
5
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Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a general construction company. We bill after the job is finished and expect payment with in 30 days of bill date. We will finance if it is worked out ahead of time.

We are a general construction company. We bill after the job is finished and expect payment with in 30 days of bill date. We will finance if it is worked out ahead of time.

Heartland Plumbing & Sewer Inc

5.00(
14
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Heartland Plumbing & Sewer Inc

5.00(
14
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Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Heartland Plumbing & Sewer, Inc. is a family owned, full-service, modern plumbing company based on simple old fashioned values. Here at Heartland, we strive each and every day to ensure and deliver complete customer satisfaction with honest, professional, courteous service, with the highest level of quality workmanship. Serving residential and commercial customers throughout Illinois, Heartland Plumbing is licensed, bonded and insured for our customer’s protection and peace of mind. We offer quality plumbing services at the most reasonable rates. We also provide same day service! We understand that you have many options when it comes to plumbing contractors. Here at Heartland Plumbing, we excel in helping you solve your plumbing problems and strive to be your plumbing contractor of choice. Heartland Plumbing takes immense pride in the way we take care of our customers, and it is our goal that your choice will be us!

Heartland Plumbing & Sewer, Inc. is a family owned, full-service, modern plumbing company based on simple old fashioned values. Here at Heartland, we strive each and every day to ensure and deliver complete customer satisfaction with honest, professional, courteous service, with the highest level of quality workmanship. Serving residential and commercial customers throughout Illinois, Heartland Plumbing is licensed, bonded and insured for our customer’s protection and peace of mind. We offer quality plumbing services at the most reasonable rates. We also provide same day service! We understand that you have many options when it comes to plumbing contractors. Here at Heartland Plumbing, we excel in helping you solve your plumbing problems and strive to be your plumbing contractor of choice. Heartland Plumbing takes immense pride in the way we take care of our customers, and it is our goal that your choice will be us!

TURNEY Heating/Cooling, Plumbing and Electrical

4.92(
12
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TURNEY Heating/Cooling, Plumbing and Electrical

4.92(
12
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Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

TURNEY has been locally owned and operated for 25 years and take pride in doing good quality work at a reasonable price. From new construction to replacement of your existing system we can help. We service all makes and models of equipment. We take pride in being able to handle all of your Heating/Cooling, Plumbing and Electrical needs with just one phone call or email.

TURNEY has been locally owned and operated for 25 years and take pride in doing good quality work at a reasonable price. From new construction to replacement of your existing system we can help. We service all makes and models of equipment. We take pride in being able to handle all of your Heating/Cooling, Plumbing and Electrical needs with just one phone call or email.

Avatar for Hays Plumbing Co Inc

Hays Plumbing Co Inc

4.87(
67
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Hays Plumbing Co Inc

4.87(
67
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Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Hays Plumbing Co., Inc. has been a family owned and operated company for two generations. We provide a variety of plumbing related services to Springfield and surrounding communities in Central Illinois. Here at Hays Plumbing Co. we specialize in those challenging and tricky plumbing tasks. Some of our specific services include, but are not limited to: -residential plumbing repairs -remodeling and new construction -installation -water heaters -disposers -sump pumps Stop wasting time talking to machines and being just another service call customer. Work with us and get the personalized service with attention to detail you deserve. So next time you are looking for a quality company that will be honest about their recommendations on what will work best for your situation, call Linda Mattson and her crew, to see why they will be around for generations to come.

Hays Plumbing Co., Inc. has been a family owned and operated company for two generations. We provide a variety of plumbing related services to Springfield and surrounding communities in Central Illinois. Here at Hays Plumbing Co. we specialize in those challenging and tricky plumbing tasks. Some of our specific services include, but are not limited to: -residential plumbing repairs -remodeling and new construction -installation -water heaters -disposers -sump pumps Stop wasting time talking to machines and being just another service call customer. Work with us and get the personalized service with attention to detail you deserve. So next time you are looking for a quality company that will be honest about their recommendations on what will work best for your situation, call Linda Mattson and her crew, to see why they will be around for generations to come.

Gas Leak Repair questions, answered by experts

Yes, you can have a gas line professionally installed to convert your traditional fireplace to natural gas; just know it’ll be an extra cost to budget for. The cost to run a gas line where you don’t already have one is about $540, though most homeowners pay between $260 and $820. Your total could be significantly higher if you don’t already have a main gas line running to your home.

Replacing a gas valve on a water heater will take a professional plumber between 1 and 1½ hours. However, they may require extra time to diagnose the problem with your water heater, particularly since so many of the surrounding parts work together. Speak with your plumber before the job to confirm the pre-hour price and the approximate length of the job.

Professionals can recommend efficient layouts or appliances and ensuring regulatory compliance.

In most cases, yes, it’s safe to light a gas water heater manually, but you should shut the gas off first, open a window, and let the space air out for about 10 minutes. Modern water heaters shut the gas off entirely if the pilot light goes out, but airing out the area beforehand is good practice and will ensure it’s safe to relight your pilot light manually. Just make sure you turn the gas valve to “pilot” before lighting. If the light keeps going out or won’t light at all, call in a professional.

While you can install a gas dryer yourself, we recommend hiring a pro to help with any work involving gas (safety first!). Keep in mind that your gas dryer will have to meet specific codes and standards. While it will cost more money to work with a professional, it will be money well spent knowing that it’s hooked up correctly.

The Mount Vernon, IL homeowners’ guide to gas leak repairs

From average costs to expert advice, get all the answers you need to get your job done.

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