Are earthquake valves required by building codes?

Building code requirements vary by location. In many earthquake-prone areas, seismic gas shut-off valves are mandatory for new construction and during certain renovations or property transfers. Local building codes may specify which valve models are approved for installation. Even where not required by law, these valves are strongly recommended as a safety measure in seismic zones to prevent gas-related fires and explosions following earthquakes.

Can installing an earthquake valve affect my insurance rates?

Many insurance providers recognize the safety benefits of earthquake valves and may offer discounts on premiums. The specific savings depend on your insurance company's policies and your property's location. Contact your insurance provider directly to inquire about potential discounts for seismic safety improvements, as offerings vary between companies and regions.

Who is qualified to install an earthquake valve?

Licensed natural gas plumbers are the most qualified professionals for earthquake valve installation. In most states, plumbers must maintain specific certifications and insurance coverage to work with gas lines. These professionals understand local building codes, proper valve placement, and how to ensure the system functions correctly during an emergency. Always verify that your installer has the appropriate licenses before proceeding with installation.

What happens if my earthquake valve activates?

When an earthquake valve activates during a seismic event, it automatically shuts off the gas supply to your home. After the valve has triggered, you'll need a qualified professional to inspect your gas system for damage before resetting the valve and restoring gas flow. This safety measure prevents gas from flowing through potentially damaged pipes or into your home when appliances might have been compromised during the earthquake.

Top-Rated Gas Pipings Experts in Exton, PA

Customers say: Quality work

21 local quotes requested

78 years of experience

Stong Plumbing is a customer focused plumbing & drain cleaning company that was originally started in 1947. We employ only highly trained people whose goals are to make our company the best service company serving the Delaware Valley, Chester and Lancaster counties. When our technician arrives, you will immediately notice that we hire only professionals. They have outstanding technical ability, and their positive attitude and integrity is brought to every home and customer we serve. Should we make a mistake, we will do everything in our power to correct it to your satisfaction. We pledge to always tell you up-front what the cost will be to complete your job correctly. We make it a point to go over any details or limitations of the proposed systems so that you have a complete understanding of the steps needed to get to a positive end result. Give us a call for your service needs, and see what you've been missing.

"they are very knowledgeable and polite. They fixed one of our leaks at no cost. They are great."

Liza G on July 2024

Stong Plumbing is a customer focused plumbing & drain cleaning company that was originally started in 1947. We employ only highly trained people whose goals are to make our company the best service company serving the Delaware Valley, Chester and Lancaster counties. When our technician arrives, you will immediately notice that we hire only professionals. They have outstanding technical ability, and their positive attitude and integrity is brought to every home and customer we serve. Should we make a mistake, we will do everything in our power to correct it to your satisfaction. We pledge to always tell you up-front what the cost will be to complete your job correctly. We make it a point to go over any details or limitations of the proposed systems so that you have a complete understanding of the steps needed to get to a positive end result. Give us a call for your service needs, and see what you've been missing.

"they are very knowledgeable and polite. They fixed one of our leaks at no cost. They are great."

Liza G on July 2024

Customers say: Quick response

Recommended by 93% of Angi customers

374 local quotes requested

At ValDel Plumbing, we take great pride in being family owned and operated. Our mission is to provide our customers with exceptional service while delivering top-notch quality. Our reputation is based on the service and quality we provide, as well as the safety of our customers and their homes. We strive for transparency throughout your entire experience with our company and as well, promise to be upfront and honest. We treat your home like our home.

"Efficient completion of the job."

Eric S on May 2025

At ValDel Plumbing, we take great pride in being family owned and operated. Our mission is to provide our customers with exceptional service while delivering top-notch quality. Our reputation is based on the service and quality we provide, as well as the safety of our customers and their homes. We strive for transparency throughout your entire experience with our company and as well, promise to be upfront and honest. We treat your home like our home.

"Efficient completion of the job."

Eric S on May 2025

1-800-Plumber + Air of Lansdale

1-800-Plumber + Air of Lansdale

Customers say: True professional

67 local quotes requested

1 years of experience

1-800-Plumber +Air is located of Lansdale is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"They were awesome!"

David H on May 2025

1-800-Plumber +Air is located of Lansdale is focused on being the BEST! It's not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

"They were awesome!"

David H on May 2025

Done Right Today, Inc.

Done Right Today, Inc.

Customers say: True professional

Recommended by 96% of Angi customers

630 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"It was great! Very knowledgeable and personable and answered all my questions. "

Brandon W on July 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"It was great! Very knowledgeable and personable and answered all my questions. "

Brandon W on July 2025

Benjamin Franklin Plumbing

1313 Wilmington Pike Unit 1A S

Benjamin Franklin Plumbing

1313 Wilmington Pike Unit 1A S

Customers say: Quick response

72 local quotes requested

66 years of experience

Does your plumbing company solve your plumbing problems? At Benjamin Franklin Plumbing, your complete satisfaction with both our service and plumbers is 100% guaranteed. Our on-time guarantee is one of the best in the country, and backed by highly skilled plumbers that are expertly trained and experienced to exceed your expectations. Simply put, when you choose Benjamin Franklin Plumbing, for all your plumbing problems, you can't lose.

"Very prompt! Good communication. Got the job done"

Janis M on November 2024

Does your plumbing company solve your plumbing problems? At Benjamin Franklin Plumbing, your complete satisfaction with both our service and plumbers is 100% guaranteed. Our on-time guarantee is one of the best in the country, and backed by highly skilled plumbers that are expertly trained and experienced to exceed your expectations. Simply put, when you choose Benjamin Franklin Plumbing, for all your plumbing problems, you can't lose.

"Very prompt! Good communication. Got the job done"

Janis M on November 2024

AJ Waterproofing

3774 Kratz Rd

4.85(

199

)

•

Approved Pro

AJ Waterproofing

3774 Kratz Rd

4.85(

199

)

•

Approved Pro

Customers say: Quality work

Recommended by 94% of Angi customers

Recommended by 94% of HomeAdvisor customers

46 local quotes requested

We are a family run waterproofing specialist company, owned and operated, since 1976 by A.J. DiElsi. We have one crew, one truck and start and finish one job at a time. We are completely insured with general liability and workman's compensation. There is no charge for estimates and we take no deposits on any job. You pay us upon completion of the job. We do not have salesmen. A.J. is the gentleman that comes out to deliver each estimate and he is on each job. We excel in impeccable workmanship, and the jobs are always left cleaner than when we arrived. We give a lifetime guarantee on our French Drains and it is transferable to each new homeowner. Please feel free to call with any questions 610-527-9444 or 610-409-0888, Additional phones: 610-960-1589. Or feel free to email us at : ajwaterproofing@verizon.net, you can also check us out on YouTube and our website, ajwaterproofing.com.

"QUICK, FRIENDLY, and CHEAP!! First, AJ called me within 30 seconds of me texting him asking for an estimate. I sent him a photo of our water leak issue and he immediately responded. He actually explained that we could probably handle the repair ourselves if we were up for it, instead of paying him or someone else. He then walked us through every step in detail and made sure we were comfortable with the directions. So in the end, it cost us $0 in labor and only a small amount for materials, and really demonstrated AJ's integrity and generosity!"

Jarcy M on September 2023

We are a family run waterproofing specialist company, owned and operated, since 1976 by A.J. DiElsi. We have one crew, one truck and start and finish one job at a time. We are completely insured with general liability and workman's compensation. There is no charge for estimates and we take no deposits on any job. You pay us upon completion of the job. We do not have salesmen. A.J. is the gentleman that comes out to deliver each estimate and he is on each job. We excel in impeccable workmanship, and the jobs are always left cleaner than when we arrived. We give a lifetime guarantee on our French Drains and it is transferable to each new homeowner. Please feel free to call with any questions 610-527-9444 or 610-409-0888, Additional phones: 610-960-1589. Or feel free to email us at : ajwaterproofing@verizon.net, you can also check us out on YouTube and our website, ajwaterproofing.com.

"QUICK, FRIENDLY, and CHEAP!! First, AJ called me within 30 seconds of me texting him asking for an estimate. I sent him a photo of our water leak issue and he immediately responded. He actually explained that we could probably handle the repair ourselves if we were up for it, instead of paying him or someone else. He then walked us through every step in detail and made sure we were comfortable with the directions. So in the end, it cost us $0 in labor and only a small amount for materials, and really demonstrated AJ's integrity and generosity!"

Jarcy M on September 2023

H L Bowman

2259 Woodlawn St

4.72(

385

)

•

Approved Pro

H L Bowman

2259 Woodlawn St

4.72(

385

)

•

Approved Pro

Customers say: Super punctual

Recommended by 90% of Angi customers

Recommended by 90% of HomeAdvisor customers

4366 local quotes requested

HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.

"Adding to the above review: NEGATIVE STARS 1. The Daikon' ductless mini-split' unit, sold to me by Brian Enders and installed by H.L. Bowman Incorporated, unleashed a deluge that not only saturated the hardwood floor in my dining room but also flowed onto bookshelves and drawers in the room below, drenching 25 family photo albums. 2. The water pooled atop and between each section of my quarter-sawn oak Stickley barrister bookcase. 3. The water seeped inside each section of the bookcase. 4. The water ran onto particularly important and expensive books, framed photographs, as well as four small wooden boxes containing four of my dog's cremains. 5. In past years, water from a second-floor unit emitted sufficient water to cause a 12' by 5' section of the upstairs floor to crash through to the main floor. All furniture and items in that 12' by 5' section were so water-damaged that they had to be discarded. Water ran behind the plaster and into the wiring contained within the plaster walls. I had to make an insurance claim to have that water damage repaired. 6. In past years, water from a basement unit emitted sufficient water to cause an entire wall of built-in cabinetry to be destroyed and have to be replaced. I had to make an insurance claim to have that water damage repaired. 7. In past years, four of the six "ductless mini-split" units have simply not worked. They do not cool. They do not heat. They hang on the wall and blink. 8. Throughout these years of destruction, distress, and financial duress caused by the six 'ductless mini-splits,' Brian Enders has consistently refused to rectify the problem. 9. The FIRST REASON Brian Enders uses to refuse to rectify the problem: When the ceiling caved in from the upstairs unit and the cabinetry was ruined by the downstairs unit, Brian Enders offered substandard assistance. He sent a contractor to my home to spackle over water-damaged plaster, thus sealing water inside the walls. When I saw the inferior repairs Enders offered, I stated that I was going to call my lawyer. Enders said that because I had threatened legal action, his company would no longer serve me. 10. The SECOND REASON Brian Enders gives for refusing to rectify the problems: When the ceiling caved in from the upstairs unit and the cabinetry was ruined by the downstairs unit and Brian Enders offered substandard assistance, I wrote bad reviews of Brian Enders and his company "all over the internet." (Enders words.) Yes. I did, indeed, write bad reviews of Brian Enders and his company, H. L. Bowman, Incorporated, "all over the internet" and will continue to do so until Brian Enders and his company, H. L. Bowman, Incorporated, make the six Daikon "mini-split" units they installed in my home work properly. 11. Because Brian Enders and his company, refuse to help me, I have paid five other companies, & one private contractor, to come to my home to diagnose and repair the six Daikon "ductless mini-split" units. Each one has been unable to do so. Each one says that there is something so faulty about these units &/or the installation of these units that it is impossible to determine what is actually wrong with them. 12. On Saturday, June 22, 2024, I tried to set up a service call with H.L Bowman, Incorporated, using a form on their website. 13. On Saturday, June 22, 2024, I received a text from H.L. Bowman confirming an appointment for Monday, June 24, 2024, with a note relating that on the day of the service, I would receive a call 30 minutes before the technician arrived. 14. On Monday, June 24, 2024, I instead received a phone call from H.L. Bowman informing me that they are too busy serving their VIP customers to send a technician out to serve me. Today is Tuesday, June 24, 2025. H.L. Bowman has still not rectified their financial and material injury to me."

Faith M on June 2025

HL Bowman has been in the same location for 38 years and owned by the same family for over 65 years. HL Bowman is a non commission based company. HL Bowman employees will never upsell you a product you don't need. Dennis and Bryan Enders and his family have deep roots in the Harrisburg community. After 65 years Dennis and family stay committed to giving the community the best possible service and product to fit their needs. HL Bowman has won Angie's List super service award every year.

"Adding to the above review: NEGATIVE STARS 1. The Daikon' ductless mini-split' unit, sold to me by Brian Enders and installed by H.L. Bowman Incorporated, unleashed a deluge that not only saturated the hardwood floor in my dining room but also flowed onto bookshelves and drawers in the room below, drenching 25 family photo albums. 2. The water pooled atop and between each section of my quarter-sawn oak Stickley barrister bookcase. 3. The water seeped inside each section of the bookcase. 4. The water ran onto particularly important and expensive books, framed photographs, as well as four small wooden boxes containing four of my dog's cremains. 5. In past years, water from a second-floor unit emitted sufficient water to cause a 12' by 5' section of the upstairs floor to crash through to the main floor. All furniture and items in that 12' by 5' section were so water-damaged that they had to be discarded. Water ran behind the plaster and into the wiring contained within the plaster walls. I had to make an insurance claim to have that water damage repaired. 6. In past years, water from a basement unit emitted sufficient water to cause an entire wall of built-in cabinetry to be destroyed and have to be replaced. I had to make an insurance claim to have that water damage repaired. 7. In past years, four of the six "ductless mini-split" units have simply not worked. They do not cool. They do not heat. They hang on the wall and blink. 8. Throughout these years of destruction, distress, and financial duress caused by the six 'ductless mini-splits,' Brian Enders has consistently refused to rectify the problem. 9. The FIRST REASON Brian Enders uses to refuse to rectify the problem: When the ceiling caved in from the upstairs unit and the cabinetry was ruined by the downstairs unit, Brian Enders offered substandard assistance. He sent a contractor to my home to spackle over water-damaged plaster, thus sealing water inside the walls. When I saw the inferior repairs Enders offered, I stated that I was going to call my lawyer. Enders said that because I had threatened legal action, his company would no longer serve me. 10. The SECOND REASON Brian Enders gives for refusing to rectify the problems: When the ceiling caved in from the upstairs unit and the cabinetry was ruined by the downstairs unit and Brian Enders offered substandard assistance, I wrote bad reviews of Brian Enders and his company "all over the internet." (Enders words.) Yes. I did, indeed, write bad reviews of Brian Enders and his company, H. L. Bowman, Incorporated, "all over the internet" and will continue to do so until Brian Enders and his company, H. L. Bowman, Incorporated, make the six Daikon "mini-split" units they installed in my home work properly. 11. Because Brian Enders and his company, refuse to help me, I have paid five other companies, & one private contractor, to come to my home to diagnose and repair the six Daikon "ductless mini-split" units. Each one has been unable to do so. Each one says that there is something so faulty about these units &/or the installation of these units that it is impossible to determine what is actually wrong with them. 12. On Saturday, June 22, 2024, I tried to set up a service call with H.L Bowman, Incorporated, using a form on their website. 13. On Saturday, June 22, 2024, I received a text from H.L. Bowman confirming an appointment for Monday, June 24, 2024, with a note relating that on the day of the service, I would receive a call 30 minutes before the technician arrived. 14. On Monday, June 24, 2024, I instead received a phone call from H.L. Bowman informing me that they are too busy serving their VIP customers to send a technician out to serve me. Today is Tuesday, June 24, 2025. H.L. Bowman has still not rectified their financial and material injury to me."

Faith M on June 2025

Wm. Henderson Plumbing, Heating & Cooling Inc.

511 Abbott Dr

4.58(

417

)

•

Approved Pro

Wm. Henderson Plumbing, Heating & Cooling Inc.

511 Abbott Dr

4.58(

417

)

•

Approved Pro

Customers say: Super punctual

1002 local quotes requested

48 years of experience

Since 1977, Wm. Henderson Plumbing, Heating & Cooling Inc. has been providing quality plumbing, heating and cooling service throughout Delaware County and the Main Line. With a fleet of fully-stocked vehicles dispatched from our Broomall headquarters, we strive to provide our customers with prompt, professional service in the plumbing, heating and cooling fields. Wm. Henderson Plumbing, Heating & Cooling Inc. is a member of the Philadelphia Suburban Association of Plumbing Contractors, National Association of Plumbing Heating, Cooling Contractors, Philadelphia-Suburban Gas Exchange, Small Business Association of Delaware County and the Marple Business & Professional Association. Operating a dependable service business requires organization, competent management and professional technical skills. All service technicians have direct communication between the office and customers due to the state-of-the-art communication provided to each technician. We are dedicated to complete customer satisfaction. Our offices are staffed and open weekdays from 7:30 am to 6:30 pm, and on Saturdays from 8:00 am to 1:00 pm. In the event of an emergency, we are always available to you 24 hours a day, 7 days a week. We quote a price before proceeding with any work. We charge by the job, not by the hour, and all work is guaranteed. We are an award-winning company, but we couldn't win awards without happy customers. You are our priority! Additional DBAs - William Henderson Plumbing & Heating Cooling Services, Wm Henderson Plumbing & Heating Inc, Wm Henderson Plumbing Heating Cooling Service.

"Repair Service to Fix Gas Boiler - WM Henderson first sends out a tech who is not familiar with gas boilers and admits there is an issue but does not know how to diagnose it. I had to pay $89 for this. Instead of having the right person come out, I had to to actively call again to get someone else to come out. The 2nd tech diagnosed the issue, but wants to charge me the same $89 that I already paid. - and quotes me $380 for the repair - and has to order the part. I agree and then call back the next day to confirm part is on order - and they tell me the charge is $1,015. I asked to speak to a manager to discuss, and no one is available and no one calls me back. I bought the replacement part from a supply where house (confirming it works with my make/model of boiler) and it cost me $165. I have had other scheduling issues with them as well. Don't use them!!!!!!!!"

Jerry W on December 2024

Since 1977, Wm. Henderson Plumbing, Heating & Cooling Inc. has been providing quality plumbing, heating and cooling service throughout Delaware County and the Main Line. With a fleet of fully-stocked vehicles dispatched from our Broomall headquarters, we strive to provide our customers with prompt, professional service in the plumbing, heating and cooling fields. Wm. Henderson Plumbing, Heating & Cooling Inc. is a member of the Philadelphia Suburban Association of Plumbing Contractors, National Association of Plumbing Heating, Cooling Contractors, Philadelphia-Suburban Gas Exchange, Small Business Association of Delaware County and the Marple Business & Professional Association. Operating a dependable service business requires organization, competent management and professional technical skills. All service technicians have direct communication between the office and customers due to the state-of-the-art communication provided to each technician. We are dedicated to complete customer satisfaction. Our offices are staffed and open weekdays from 7:30 am to 6:30 pm, and on Saturdays from 8:00 am to 1:00 pm. In the event of an emergency, we are always available to you 24 hours a day, 7 days a week. We quote a price before proceeding with any work. We charge by the job, not by the hour, and all work is guaranteed. We are an award-winning company, but we couldn't win awards without happy customers. You are our priority! Additional DBAs - William Henderson Plumbing & Heating Cooling Services, Wm Henderson Plumbing & Heating Inc, Wm Henderson Plumbing Heating Cooling Service.

"Repair Service to Fix Gas Boiler - WM Henderson first sends out a tech who is not familiar with gas boilers and admits there is an issue but does not know how to diagnose it. I had to pay $89 for this. Instead of having the right person come out, I had to to actively call again to get someone else to come out. The 2nd tech diagnosed the issue, but wants to charge me the same $89 that I already paid. - and quotes me $380 for the repair - and has to order the part. I agree and then call back the next day to confirm part is on order - and they tell me the charge is $1,015. I asked to speak to a manager to discuss, and no one is available and no one calls me back. I bought the replacement part from a supply where house (confirming it works with my make/model of boiler) and it cost me $165. I have had other scheduling issues with them as well. Don't use them!!!!!!!!"

Jerry W on December 2024

Valdel Plumbing

2361 Potshop Ln

4.77(

175

)

•

Approved Pro

Valdel Plumbing

2361 Potshop Ln

4.77(

175

)

•

Approved Pro

Customers say: Quick response

Recommended by 92% of Angi customers

Recommended by 92% of HomeAdvisor customers

1141 local quotes requested

Residential Plumbing & Drain Cleaning Service. Owners have over 30 years of experience. Proudly servicing Montgomery County, Chester County, Delaware County and lower Bucks County with professional, personal and timely service. Guaranteed respect for you, your time and your home. No job is too big or too small. Call us today for Expert Service, Quality Products, and Affordable Price!

"technician was affable and competent. however initial quote was outrageous and negotiate price still exorbitant, even taking into consideration of the day of the week. 1hpur labor and $30 worth of parts does not equal $ 374"

Joe V on March 2025

Residential Plumbing & Drain Cleaning Service. Owners have over 30 years of experience. Proudly servicing Montgomery County, Chester County, Delaware County and lower Bucks County with professional, personal and timely service. Guaranteed respect for you, your time and your home. No job is too big or too small. Call us today for Expert Service, Quality Products, and Affordable Price!

"technician was affable and competent. however initial quote was outrageous and negotiate price still exorbitant, even taking into consideration of the day of the week. 1hpur labor and $30 worth of parts does not equal $ 374"

Joe V on March 2025

Volkert Remodeling Inc

1160 Lake Dr.

4.91(

74

)

•

Approved Pro

Volkert Remodeling Inc

1160 Lake Dr.

4.91(

74

)

•

Approved Pro

Customers say: Quality work

Recommended by 94% of Angi customers

Recommended by 94% of HomeAdvisor customers

77 local quotes requested

Volkert Remodeling Inc. is the one stop resource for Home Remodeling, specializing in Kitchens and Bathrooms. Super Service Award winners for 2016, 2015 and 2014. We make sure that the job is completed from beginning to end and that our customers are happy with the quality and craftsmanship throughout. Please call us today to schedule your appointment - (610) 960-1097

"From start to end the kitchen renovation process went extremely well. Don made sure to include me through it all and made sure I was pleased with each step. Whenever a decision is needed, Don explains the options and impact of each. He and his employee, also named Don, are prompt every day and attentive to details. They do the work right with high quality workmanship. I am extremely grateful to have had this experience that has resulted in beautiful kitchen. Without hesitation, I plan to contact Don Volkert for any future projects I need done."

Tom W on December 2024

Volkert Remodeling Inc. is the one stop resource for Home Remodeling, specializing in Kitchens and Bathrooms. Super Service Award winners for 2016, 2015 and 2014. We make sure that the job is completed from beginning to end and that our customers are happy with the quality and craftsmanship throughout. Please call us today to schedule your appointment - (610) 960-1097

"From start to end the kitchen renovation process went extremely well. Don made sure to include me through it all and made sure I was pleased with each step. Whenever a decision is needed, Don explains the options and impact of each. He and his employee, also named Don, are prompt every day and attentive to details. They do the work right with high quality workmanship. I am extremely grateful to have had this experience that has resulted in beautiful kitchen. Without hesitation, I plan to contact Don Volkert for any future projects I need done."

Tom W on December 2024