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Water heater installers and replacers in Mountainside

Avatar for First Choice Master Plumbers
First Choice Master Plumbers
120 Liberty Street
5.00(
15
)
Approved Pro
First Choice Master Plumbers
120 Liberty Street
5.00(
15
)
Approved Pro
Customers say: Quick response
456 local quotes requested
35 years of experience

We’re dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"On time. Professional. Friendly. Great job."

Jeffrey T on April 2025

We’re dedicated to providing our clients with the very best in service, installation, and repair for all phases of your plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

"On time. Professional. Friendly. Great job."

Jeffrey T on April 2025


NJ Plumbing & Heating Guys
530 W Main St #3A
4.90(
15
)
Approved Pro
NJ Plumbing & Heating Guys
530 W Main St #3A
4.90(
15
)
Approved Pro
Super Service Award
Customers say: Quick response
11 local quotes requested
9 years of experience

NJ Plumbing & Heating Guys is committed to delivering high-quality, reliable, and affordable plumbing services to both residential and commercial clients. We specialize in a wide range of services including drain cleaning, emergency repairs, routine maintenance, installations, system upgrades and much more. Our mission is to provide exceptional customer service and unparalleled craftsmanship, ensuring that each job is completed with precision and efficiency. We pride ourselves on our transparent pricing, timely service, and dedication to solving plumbing issues promptly and effectively. Whether it's a leaky faucet, a clogged drain, or a major plumbing overhaul, we approach every project with professionalism and care with 90 day guarantee.

"Very professional and price friendly"

tremaine b on January 2025

NJ Plumbing & Heating Guys is committed to delivering high-quality, reliable, and affordable plumbing services to both residential and commercial clients. We specialize in a wide range of services including drain cleaning, emergency repairs, routine maintenance, installations, system upgrades and much more. Our mission is to provide exceptional customer service and unparalleled craftsmanship, ensuring that each job is completed with precision and efficiency. We pride ourselves on our transparent pricing, timely service, and dedication to solving plumbing issues promptly and effectively. Whether it's a leaky faucet, a clogged drain, or a major plumbing overhaul, we approach every project with professionalism and care with 90 day guarantee.

"Very professional and price friendly"

tremaine b on January 2025


Avatar for Gold Medal Service, LLC
Gold Medal Service, LLC
11 Cotters Lane
4.35(
311
)
Approved Pro
Gold Medal Service, LLC
11 Cotters Lane
4.35(
311
)
Approved Pro
Customers say: Quality work
47 years of experience
Free onsite estimate

Gold Medal Services, LLC, warrants and guarantees to the original purchaser, that should Customer accept and purchase Gold Medal’s recommended repair, such repair shall be free from defect in materials and workmanship under normal use and conditions for as long as the Customer owns the residence in which the recommended repair was provided or until the Unit in which the Covered Repair was performed, if applicable, is replaced.

"Gold Medal really helped out after our sewer line backed up into our basement. The other pros all wanted us to pay for a camera view first for several hundred. Then the actual cleaning of the line was $500 and up depending on the results of the camera. Gold Medal had a fixed price for cleaning out a sewer line. They came and quickly diagnosed the problem and cleaned it out. Our technician Brett was awesome and even put us in touch with DryTech to assist cleaning up the water damage."

Adam S on July 2024

Gold Medal Services, LLC, warrants and guarantees to the original purchaser, that should Customer accept and purchase Gold Medal’s recommended repair, such repair shall be free from defect in materials and workmanship under normal use and conditions for as long as the Customer owns the residence in which the recommended repair was provided or until the Unit in which the Covered Repair was performed, if applicable, is replaced.

"Gold Medal really helped out after our sewer line backed up into our basement. The other pros all wanted us to pay for a camera view first for several hundred. Then the actual cleaning of the line was $500 and up depending on the results of the camera. Gold Medal had a fixed price for cleaning out a sewer line. They came and quickly diagnosed the problem and cleaned it out. Our technician Brett was awesome and even put us in touch with DryTech to assist cleaning up the water damage."

Adam S on July 2024


Benjamin Franklin Plumbing
2005 Route 31
4.34(
152
)
Approved Pro
Benjamin Franklin Plumbing
2005 Route 31
4.34(
152
)
Approved Pro
Customers say: True professional
29 years of experience
Emergency services offered

Benjamin Franklin Plumbing offers a variety of services to satisfy all of your plumbing and heating needs. Our experienced service technicians are trained to provide quality customer service. Toilet trouble, water leaks, no hot water, clogged drains? Not a problem, we guarantee 100% satisfaction along with 100% financing. Call today to get straight forward pricing on service work. We look forward to your call. Service fee charged for all estimates and service calls

"Definitely would use them again and would highly recommend. "

Dom M on February 2025

Benjamin Franklin Plumbing offers a variety of services to satisfy all of your plumbing and heating needs. Our experienced service technicians are trained to provide quality customer service. Toilet trouble, water leaks, no hot water, clogged drains? Not a problem, we guarantee 100% satisfaction along with 100% financing. Call today to get straight forward pricing on service work. We look forward to your call. Service fee charged for all estimates and service calls

"Definitely would use them again and would highly recommend. "

Dom M on February 2025


Phil's Plumbing, LLC
25 Bennington Drive
4.85(
67
)
Approved Pro
Phil's Plumbing, LLC
25 Bennington Drive
4.85(
67
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
15 years of experience

At Phil's Plumbing, LLC, we are known for our high quality work and extreme attention to detail. We can handle jobs of all sizes and always make sure to get your project done right the first time. You won't regret working with us!

"Phil (& his helper) were very professional, reliable, trust-worthy, & more than fair regarding price! He kept in touch if he was delayed. He had multiple issues to keep him busy here... dealing with a leaking sink faucet hose here (& eventually installing a new faucet when Kohler's replacement hose would not fit a DISCONTINUED faucet, adjust water temperature in my guest bath shower & reinstalling the shower faucet, & checking my master bath toilet's fill valve. Sure, YouTube videos are helpful *but they can NOT substitute for a plumber! Also, 20% Senior Citizen discount!"

Michele S on July 2024

At Phil's Plumbing, LLC, we are known for our high quality work and extreme attention to detail. We can handle jobs of all sizes and always make sure to get your project done right the first time. You won't regret working with us!

"Phil (& his helper) were very professional, reliable, trust-worthy, & more than fair regarding price! He kept in touch if he was delayed. He had multiple issues to keep him busy here... dealing with a leaking sink faucet hose here (& eventually installing a new faucet when Kohler's replacement hose would not fit a DISCONTINUED faucet, adjust water temperature in my guest bath shower & reinstalling the shower faucet, & checking my master bath toilet's fill valve. Sure, YouTube videos are helpful *but they can NOT substitute for a plumber! Also, 20% Senior Citizen discount!"

Michele S on July 2024


Avatar for Garden State Water Heaters
Garden State Water Heaters
15 Shipman Place
4.64(
427
)
Approved Pro
Garden State Water Heaters
15 Shipman Place
4.64(
427
)
Approved Pro
Super Service Award
Customers say: Super punctual
162 local quotes requested
7 years of experience

Our experience is serving our customers with 100% satisfaction on every project we take on. We will give you the peace of mind you need and deserve. Garden State Water Heaters, happily services the community with integrity, professionalism, and competitive pricing. We are fully licensed and insured, and have built a reputation for quality work with each satisfied customer. Thank you for the opportunity to introduce you to our company.

"Good plumber, explained well, decent price."

Brian R on June 2025

Our experience is serving our customers with 100% satisfaction on every project we take on. We will give you the peace of mind you need and deserve. Garden State Water Heaters, happily services the community with integrity, professionalism, and competitive pricing. We are fully licensed and insured, and have built a reputation for quality work with each satisfied customer. Thank you for the opportunity to introduce you to our company.

"Good plumber, explained well, decent price."

Brian R on June 2025


Avatar for Rich's Heating & Sewer, Inc.
Rich's Heating & Sewer, Inc.
366 Cranbury Road
4.58(
656
)
Approved Pro
Rich's Heating & Sewer, Inc.
366 Cranbury Road
4.58(
656
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
76 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s 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.

"They were very professional, courteous, friendly, and explained everything very well. I would be happy to use them again and give their name and number to my friends."

Naoko C on May 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s 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.

"They were very professional, courteous, friendly, and explained everything very well. I would be happy to use them again and give their name and number to my friends."

Naoko C on May 2025


Avatar for Dr. Water Heater, Inc.
Dr. Water Heater, Inc.
Po Box 925
4.76(
165
)
Approved Pro
Dr. Water Heater, Inc.
Po Box 925
4.76(
165
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
11 local quotes requested

Dr. Water Heater, Inc., has been in business since 1986. My name is Tony Intile and I specialize in gas, electric, propane water heaters and tankless, installations, All plumbing and heating repairs and service and much more! Please call me today and I can provide you with a FREE quote for any installation, service, or repair

"Great service."

Wellington A on February 2025

Dr. Water Heater, Inc., has been in business since 1986. My name is Tony Intile and I specialize in gas, electric, propane water heaters and tankless, installations, All plumbing and heating repairs and service and much more! Please call me today and I can provide you with a FREE quote for any installation, service, or repair

"Great service."

Wellington A on February 2025


Avatar for Sydlar Service LLC
Sydlar Service LLC
126 Robert Street
5.00(
11
)
Approved Pro
Sydlar Service LLC
126 Robert Street
5.00(
11
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

Sydlar Service LLC is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"Excellent customer service! He came right away to unclogged my kitchen sink and left everything clean . Thank you so much George!"

Marilyn A on May 2025

Sydlar Service LLC is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"Excellent customer service! He came right away to unclogged my kitchen sink and left everything clean . Thank you so much George!"

Marilyn A on May 2025


Avatar for B & B Maintenance Plumbing and Fire Sprinklers, LLC
B & B Maintenance Plumbing and Fire Sprinklers, LLC
45 Carey Avenue, Suite 104
4.75(
7
)
Approved Pro
B & B Maintenance Plumbing and Fire Sprinklers, LLC
45 Carey Avenue, Suite 104
4.75(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 years of experience

B & B Maintenance Plumbing and Fire Sprinklers, LLC has been in business since 1985. Here for all your plumbing needs and making sure that you are taken care of. We do everything from water heaters to fire sprinkler systems.

"BB Plumbing was hired through my GC for my basement finish. They were responsive, worked with us through the process and came up with good ideas to make the bathroom, laundry room and bar area come out nice. Justin did great work and was reliable."

Brad C on October 2022

B & B Maintenance Plumbing and Fire Sprinklers, LLC has been in business since 1985. Here for all your plumbing needs and making sure that you are taken care of. We do everything from water heaters to fire sprinkler systems.

"BB Plumbing was hired through my GC for my basement finish. They were responsive, worked with us through the process and came up with good ideas to make the bathroom, laundry room and bar area come out nice. Justin did great work and was reliable."

Brad C on October 2022

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FAQs for water heater installation and replacement projects in Mountainside, NJ

You'll need an expansion tank if your home has a closed water system, which is standard in newer homes or those with backflow preventers or pressure regulators. Expanding hot water has nowhere to go in closed systems, creating potentially damaging pressure. The expansion tank provides space for this expanded water, protecting your plumbing system and water heater from premature failure. Many local building codes now require expansion tanks, and some water heater warranties may be voided without one.

For a standard 50-gallon water heater, a two-gallon expansion tank is sufficient. This sizing assumes normal household water pressure between 40 and 60 psi. If your home has higher water pressure (60 to 80 psi), consider upgrading to a slightly larger tank for added protection. The expansion tank's purpose is to accommodate the increased volume that occurs when cold water heats up, which is proportional to your water heater's capacity.

Watch for signs like dripping water around the tank, fluctuating water pressure throughout your home, or unusual noises in your plumbing system. A properly functioning expansion tank should feel light when tapped on the bottom—if it feels heavy or waterlogged, the internal bladder has likely failed. Other indicators include frequent triggering of your temperature and pressure relief valve, visible corrosion on the tank, or unexplained increases in your water bill, suggesting hidden leaks.

Most expansion tanks have a service life of five to 10 years, though some may last up to 12 years or more with proper maintenance. Factors affecting lifespan include water quality, system pressure, installation quality, and tank construction. Hard water areas often see shorter lifespans due to mineral buildup. Regular maintenance checks can help identify potential issues before complete failure. When your water heater is due for replacement, it's wise to replace the expansion tank simultaneously, even if it hasn't failed yet.

A 30-gallon water heater needs an expansion tank if your home has a closed plumbing system. The need for an expansion tank is determined by your plumbing system type rather than water heater size. Even smaller water heaters create thermal expansion when heating water. If your home has a backflow preventer, pressure regulator, or check valve on the main water line, you have a closed system that requires an expansion tank. Check your local plumbing codes, as many jurisdictions now mandate expansion tanks regardless of water heater size.

The Mountainside, NJ homeowners’ guide to water heater installations and replacements
From average costs to expert advice, get all the answers you need to get your job done.
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Looking to remodel your shower? Here’s how much it costs, what factors affect cost, and what to expect.
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Budget for main sewer line clog repair costs based on factors such as cleaning method, sewer age, project complexity, permits, labor, and more.
master bathroom shower wall being regrouted
Apr 21, 2025
Apr 21, 2025
Use this guide to estimate the cost to regrout a shower based on the type of grout, tile size, and more.
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Jun 11, 2025
Jun 11, 2025
Budget for sewer line camera inspection costs based on factors such as sewer length, camera type, method, accessibility, repairs, labor, and more.
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Apr 30, 2025
Apr 30, 2025
Budget for main water line replacement costs based on factors such as accessibility, depth, length, materials, permits, labor, and more.
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Apr 30, 2025
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Budget for walk-in bathtub costs based on factors such as bathtub type, labor, plumbing and electrical work, additional accessibility features, and more.
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