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Tankless water heater repair pros in Central Islip

Avatar for Mr. Big Plumbing & Heating

Mr. Big Plumbing & Heating

38 Brefni Street
4.88(
13
)
Approved Pro

Mr. Big Plumbing & Heating

38 Brefni Street
4.88(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Big Plumbing and Heating, Inc., is your local contractor with over 20 years experience in taking care of all your needs. We do installs and service work for Suffolk and Nassau Counties. Call Today!

"Andre is very knowledgeable about the job. He not only fix the problem but also advise the necessary preventative action."

Victor P on April 2024

Big Plumbing and Heating, Inc., is your local contractor with over 20 years experience in taking care of all your needs. We do installs and service work for Suffolk and Nassau Counties. Call Today!

"Andre is very knowledgeable about the job. He not only fix the problem but also advise the necessary preventative action."

Victor P on April 2024


Avatar for Energywise, Inc.

Energywise, Inc.

2231 5th Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Energywise, Inc.

2231 5th Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
40 years of experience
Emergency services offered

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.

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.


Avatar for Varsity Home Service Company, Inc.

Varsity Home Service Company, Inc.

1610 Ocean Avenue
4.78(
191
)
Approved Pro

Varsity Home Service Company, Inc.

1610 Ocean Avenue
4.78(
191
)
Approved Pro
Customers say: Quality work
460 local quotes requested
63 years of experience

Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!

"Alexis and his crew were great, from start to finish."

Nick A on August 2025

Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!

"Alexis and his crew were great, from start to finish."

Nick A on August 2025


Avatar for HEATWAVE PLUMBING & HEATING LLC

HEATWAVE PLUMBING & HEATING LLC

109-14 139TH STREET
4.88(
25
)
Approved Pro

HEATWAVE PLUMBING & HEATING LLC

109-14 139TH STREET
4.88(
25
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

HEATWAVE PLUMBING & HEATING LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I hired Dillion to work on my home boiler unit. He was excellent. He explains in layman’s term how each part of my unit works. He replaced parts that needed to be replaced. He took his time and he did not rush the job. Dillion is reliable, professional and is knowledgeable in his craft and confident in his skills. Dillion’s cool demeanor made me at least ease. I would not hesitate to call Dillion (1 (561) 475-0107 for my plumbing and heating needs."

Wilson M on August 2025

HEATWAVE PLUMBING & HEATING LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I hired Dillion to work on my home boiler unit. He was excellent. He explains in layman’s term how each part of my unit works. He replaced parts that needed to be replaced. He took his time and he did not rush the job. Dillion is reliable, professional and is knowledgeable in his craft and confident in his skills. Dillion’s cool demeanor made me at least ease. I would not hesitate to call Dillion (1 (561) 475-0107 for my plumbing and heating needs."

Wilson M on August 2025


Avatar for 1-800-Plumber +Air of Central Long Island

1-800-Plumber +Air of Central Long Island

36 Gazza Boulevard
5.00(
7
)
Approved Pro

1-800-Plumber +Air of Central Long Island

36 Gazza Boulevard
5.00(
7
)
Approved Pro
Customers say: Quick response
100 local quotes requested
1 years of experience

1-800-Plumber + Air of Central Long Island 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.

"Scott was great. Came out within 2 hours and had my sink ready to go in under 30 minutes!"

Jennifer B on August 2025

1-800-Plumber + Air of Central Long Island 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.

"Scott was great. Came out within 2 hours and had my sink ready to go in under 30 minutes!"

Jennifer B on August 2025


Climix HVAC Services

11 Van Buren Street
4.85(
13
)
Approved Pro

Climix HVAC Services

11 Van Buren Street
4.85(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Here at ADRIANS HVAC CORP., we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Friendly and great working knowledge"

Wayne S on March 2024

Here at ADRIANS HVAC CORP., we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Friendly and great working knowledge"

Wayne S on March 2024


Avatar for Genco Plumbing LLC

Genco Plumbing LLC

1671 Newbridge Rd
5.00(
5
)
Approved Pro

Genco Plumbing LLC

1671 Newbridge Rd
5.00(
5
)
Approved Pro
4 years of experience
Free onsite estimate

Genco Plumbing LLC is a fully licensed and insured company, dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We 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.

"Had a navien boiler installed by Genco plumbing and they did great work, professional and kept it very clean."

john m on August 2025

Genco Plumbing LLC is a fully licensed and insured company, dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential and commercial services. We 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.

"Had a navien boiler installed by Genco plumbing and they did great work, professional and kept it very clean."

john m on August 2025


Avatar for RDS Plumbing and Heating

RDS Plumbing and Heating

1303 Waverly Avenue
4.92(
82
)
Approved Pro

RDS Plumbing and Heating

1303 Waverly Avenue
4.92(
82
)
Approved Pro
Customers say: True professional
8 years of experience

Please visit us at www.rdsplumbingheating.com for more info. We pride our company on reliability, great communication, integrity, quality work and beating our competitors pricing on all work. Being experts in the plumbing and heating trade for over 20 years we can quickly diagnose your issue and make the necessary repairs or installations to remedy the problem. This gives us the ability to be competitively priced, ensuring your problem is fixed the first time ! RDS looks forward to gaining you as life long customer. Give us a call 631-590-0561

"Responded to my request immediately and had the problem fixed by the afternoon "

Brittany S on August 2025

Please visit us at www.rdsplumbingheating.com for more info. We pride our company on reliability, great communication, integrity, quality work and beating our competitors pricing on all work. Being experts in the plumbing and heating trade for over 20 years we can quickly diagnose your issue and make the necessary repairs or installations to remedy the problem. This gives us the ability to be competitively priced, ensuring your problem is fixed the first time ! RDS looks forward to gaining you as life long customer. Give us a call 631-590-0561

"Responded to my request immediately and had the problem fixed by the afternoon "

Brittany S on August 2025


"Lester is amazing! Polite, clean, efficient. We look forward to giving Lester more of our work! He is such a professional 5 stars!!!"

Thomas P on July 2025

All things plumbing and heating.

"Lester is amazing! Polite, clean, efficient. We look forward to giving Lester more of our work! He is such a professional 5 stars!!!"

Thomas P on July 2025


Tri Seasonal Plumbing, Inc.

266 Middle Island Rd, Unit 13
4.20(
5
)
Approved Pro

Tri Seasonal Plumbing, Inc.

266 Middle Island Rd, Unit 13
4.20(
5
)
Approved Pro
Free onsite estimate
Emergency services offered

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 the start to the 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.

"Tri Seasons sent a technician over after hours to fix my mother?s central air. After Repairing her unit, the also changed her filters for her before they left. "

Rebecca M on August 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 the start to the 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.

"Tri Seasons sent a technician over after hours to fix my mother?s central air. After Repairing her unit, the also changed her filters for her before they left. "

Rebecca M on August 2025

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