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TRUSTED BY HARVARD, MA HOMEOWNERS

  • Average homeowner rating star icon3.8
    Average homeowner rating
  • Verified reviews icon22
    Verified gas leak repairs reviews

Find Gas leak repair technicians in Harvard

Avatar for Sila Heating, Cooling, Plumbing and Electrical

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro
Customers say: Super punctual
634 local quotes requested
36 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025


Avatar for D Day Plumbing

D Day Plumbing

4.96(
38
)
Approved Pro

D Day Plumbing

4.96(
38
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

- Closely follow the average True Cost Rate furnished on the Homeowners section of Home Advisor for labor costs - Show up on time and give up front estimates - Focus on service work and limited multi-day projects so my schedule remains fluid - Advocate on the customer's behalf shopping for best prices on quality materials and best practices to get jobs done to code at the best rate possible

"We had an issue with a Dry Well periodically backing up. Damian and the D Day Plumbing team were very professional and knowledgeable and provided an estimate with a couple different options and their related costs. They installed a new utility sink, sink pump, and needed piping and valves with tie ins to the main septic. They made improvement above and beyond the initial job breakdown, all the while staying within budget. I will certainly consider them again for any future work. Thank you Damian and the D Day Plumbing Team for a job very done!"

Jim K on July 2024

- Closely follow the average True Cost Rate furnished on the Homeowners section of Home Advisor for labor costs - Show up on time and give up front estimates - Focus on service work and limited multi-day projects so my schedule remains fluid - Advocate on the customer's behalf shopping for best prices on quality materials and best practices to get jobs done to code at the best rate possible

"We had an issue with a Dry Well periodically backing up. Damian and the D Day Plumbing team were very professional and knowledgeable and provided an estimate with a couple different options and their related costs. They installed a new utility sink, sink pump, and needed piping and valves with tie ins to the main septic. They made improvement above and beyond the initial job breakdown, all the while staying within budget. I will certainly consider them again for any future work. Thank you Damian and the D Day Plumbing Team for a job very done!"

Jim K on July 2024


"Top notch vikki had her guys here asap to check my old a/c unit out when the tech said it was gone that Monday the appraiser came out 2 days after that had quote and a week after that install in 1 day . Guys where awesome new what they where doing had it done in no time... highly recommend for any a/c our heating issues awesome people..thank you advance especially vikki she was awesome. "

Leo B on July 2025

Advanced Energy Concepts was established in your community in 1990. Our main focus is energy conservation. Advanced Energy concepts also does a variety of plumbing services for your residential home

"Top notch vikki had her guys here asap to check my old a/c unit out when the tech said it was gone that Monday the appraiser came out 2 days after that had quote and a week after that install in 1 day . Guys where awesome new what they where doing had it done in no time... highly recommend for any a/c our heating issues awesome people..thank you advance especially vikki she was awesome. "

Leo B on July 2025


Avatar for MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

4.51(
314
)
Approved Pro

MillTown Plumbing, Heating, Cooling and Electrical - Plumbing

4.51(
314
)
Approved Pro
Customers say: Quick response
129 local quotes requested
46 years of experience

Since 1979, we've provided the highest quality protection against plumbing, heating, cooling and drain problems for residential, commercial and property managers in the Merrimack Valley and southern New Hampshire. At MillTown Plumbing, Heating, HVAC, and Drain Cleaning, we're a family owned and operated business. We know the value of fast service, from a professional and reliable team. Give us a call today at (617) 725-2674! We look forward to serving you.

"They were able to come on short notice and replace the leaking valve assembly."

Robert S on November 2025

Since 1979, we've provided the highest quality protection against plumbing, heating, cooling and drain problems for residential, commercial and property managers in the Merrimack Valley and southern New Hampshire. At MillTown Plumbing, Heating, HVAC, and Drain Cleaning, we're a family owned and operated business. We know the value of fast service, from a professional and reliable team. Give us a call today at (617) 725-2674! We look forward to serving you.

"They were able to come on short notice and replace the leaking valve assembly."

Robert S on November 2025


Avatar for Domination Plumbing and Heating

Domination Plumbing and Heating

4.80(
22
)
Approved Pro

Domination Plumbing and Heating

4.80(
22
)
Approved Pro
Customers say: True professional
14 local quotes requested
14 years of experience

Domination Plumbing and Heating is a locally owned and operated company based in Leominster MA, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! "We plumb it nice for a good price!"

"Domination Plumbing came out to my house on a Friday morning, provided an estimate that day, and scheduled the work for Monday morning. All work was performed quickly and efficiently. I absolutely recommend them and will call them again for any plumbing needs."

Jessica M on July 2025

Domination Plumbing and Heating is a locally owned and operated company based in Leominster MA, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! "We plumb it nice for a good price!"

"Domination Plumbing came out to my house on a Friday morning, provided an estimate that day, and scheduled the work for Monday morning. All work was performed quickly and efficiently. I absolutely recommend them and will call them again for any plumbing needs."

Jessica M on July 2025


"Nick’s response time, quote, and work was outstanding! He was able to fit me and do the repair quickly and it is much appreciated. Thank you!"

Kimberly A on May 2025

At Yelle Plumbing and Heating, we take pride in our work and strive to meet every need of our customers. From small service to new construction we can do it all. Fully licensed and insured

"Nick’s response time, quote, and work was outstanding! He was able to fit me and do the repair quickly and it is much appreciated. Thank you!"

Kimberly A on May 2025



Avatar for Hummingbird Plumbing, Heating and Air Conditioning

Hummingbird Plumbing, Heating and Air Conditioning

5.00(
7
)

Hummingbird Plumbing, Heating and Air Conditioning

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Hummingbird specializes in Plumbing and HVAC Service and Repairs. We also install new Plumbing, Heating and Air Conditioning systems. We are efficient, friendly and effective at serving you and your home the way you deserve! Our business just opened its doors in February 2022! We are a young but eager business with 12 years of experience. We are an owner-operated business which means that I am personally putting my name on every job we do. We take pride in our work! If you are ready to have a great experience with a Down-to-Earth, Friendly and Fun Plumbing and HVAC company, please give us a call (978-999-2393) or contact us on Facebook or our website hummingbirdplumbing.com

"Kevin did a great job getting everything fixed in a timely manner. He was very punctual, friendly and polite. I will reach out to him again for future plumbing issues."

Ray F on March 2023

Hummingbird specializes in Plumbing and HVAC Service and Repairs. We also install new Plumbing, Heating and Air Conditioning systems. We are efficient, friendly and effective at serving you and your home the way you deserve! Our business just opened its doors in February 2022! We are a young but eager business with 12 years of experience. We are an owner-operated business which means that I am personally putting my name on every job we do. We take pride in our work! If you are ready to have a great experience with a Down-to-Earth, Friendly and Fun Plumbing and HVAC company, please give us a call (978-999-2393) or contact us on Facebook or our website hummingbirdplumbing.com

"Kevin did a great job getting everything fixed in a timely manner. He was very punctual, friendly and polite. I will reach out to him again for future plumbing issues."

Ray F on March 2023


Avatar for 2J Plumbing

2J Plumbing

5.00(
2
)

2J Plumbing

5.00(
2
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Emergency call 24/7 - Plumbing, heating, and HVAC installation, repair, and maintenance. We service Residential and commercial areas from the ground up to remodels. We are fully insured and licensed in MA. We offer 24 hr service. Commercial and Residential Air Conditioning & Heating Services. Water heater installations Gas leaks Repair Service Radiator Valve and Installation Give us a call today and allow us to answer any questions or concerns that you may have.

"Very professional, on time. Service is very good. Clean and reliable."

Johan M on February 2022

Emergency call 24/7 - Plumbing, heating, and HVAC installation, repair, and maintenance. We service Residential and commercial areas from the ground up to remodels. We are fully insured and licensed in MA. We offer 24 hr service. Commercial and Residential Air Conditioning & Heating Services. Water heater installations Gas leaks Repair Service Radiator Valve and Installation Give us a call today and allow us to answer any questions or concerns that you may have.

"Very professional, on time. Service is very good. Clean and reliable."

Johan M on February 2022


Avatar for Calzini's plumbing

Calzini's plumbing

5.00(
13
)

Calzini's plumbing

5.00(
13
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our business prides itself on quality work and customer relationships, which is our flagship business platform. We offer a wide range of services such as heating systems, natural gas and propane, all aspects of plumbing as well as water quality testing and the corresponding filtration system from resulting test.

"Dave from Calzini's Plumbing and Heating got me through a hard time when I couldn't get anyone else to provide service on short notice. As a landlord, I had to replace a hot water heater for my tenants as soon as possible. I had to shut the water off and they were extremely upset about it. The only one that responded and came out right away was Calzini's Plumbing. They arrived within an hour and were out within an hour after with everything functioning perfectly. It was in the evening so couldn't get a permit that night. Dave from Calzini's arrived early the next morning to have a permit pulled and all was good again. I can't say enough about this company and would recommend Calzini's Plumbing and Heating to anyone for all your service needs. Thanks Dave Calzini!"

Rober C on June 2022

Our business prides itself on quality work and customer relationships, which is our flagship business platform. We offer a wide range of services such as heating systems, natural gas and propane, all aspects of plumbing as well as water quality testing and the corresponding filtration system from resulting test.

"Dave from Calzini's Plumbing and Heating got me through a hard time when I couldn't get anyone else to provide service on short notice. As a landlord, I had to replace a hot water heater for my tenants as soon as possible. I had to shut the water off and they were extremely upset about it. The only one that responded and came out right away was Calzini's Plumbing. They arrived within an hour and were out within an hour after with everything functioning perfectly. It was in the evening so couldn't get a permit that night. Dave from Calzini's arrived early the next morning to have a permit pulled and all was good again. I can't say enough about this company and would recommend Calzini's Plumbing and Heating to anyone for all your service needs. Thanks Dave Calzini!"

Rober C on June 2022

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Gas Leak Repair questions, answered by experts

Only yellow Teflon tape is approved for use on gas lines. Also called yellow PTFE tape, it is thicker and specifically rated for use on natural gas and propane connections. Standard white Teflon tape is not safe for gas applications. If you have questions about sealing gas line connections, contact a pro like a gas line contractor or plumber who installs or runs gas lines.

Common signs of gas line leaks include a rotten egg smell, hissing sounds, dead plants around the area of the leak, and unexplained physical symptoms like dizziness and nausea. If you notice any of these signs, act immediately. Shut off the gas supply to your home and call a pro to assess the situation.

You may want to remove the gas line if it’s unsightly or if it’s causing a problem with future appliances. The downside is if you decide to go back to gas, you would need to run a new gas line to the area.  The average cost to run a new gas line is $550, but the installation can range anywhere from $120 to $1,350.

In some cases, the answer is yes. Being licensed to work on gas lines requires additional specialized training beyond being a licensed plumber. If the plumber is also licensed as a natural gas plumber, they will be able work on natural gas lines. If the plumber is only licensed to work on water and sewer lines, then you’ll have to find another professional to do gas line work.

It’s no secret that natural gas differs from propane, but you’re in luck—licensed plumbers can also install propane gas lines. When you speak to a gas plumber near you, be sure you specify that your project will be for propane gas, not natural gas. Propane lines are slightly different than natural gas lines, so clear communication is key to ensure that your project is completed without a hitch. 

The Harvard, MA 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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