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Tankless water heater installers in Cortlandt Manor

CJM Plumbing, Heating, & A/C
13 Willow Avenue, Suite 5
4.70(
66
)
Approved Pro
CJM Plumbing, Heating, & A/C
13 Willow Avenue, Suite 5
4.70(
66
)
Approved Pro
Customers say: True professional
16 local quotes requested
13 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.

"CJM plumbing provided excellent service. They are prompt, courteous and thorough. I have used CJM several times and they are always outstanding."

Jeanne R on March 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.

"CJM plumbing provided excellent service. They are prompt, courteous and thorough. I have used CJM several times and they are always outstanding."

Jeanne R on March 2025


Avatar for TMO Plumbing & Heating & Electric
TMO Plumbing & Heating & Electric
45 Highland Avenue
4.92(
93
)
Approved Pro
TMO Plumbing & Heating & Electric
45 Highland Avenue
4.92(
93
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
61 local quotes requested

TMO Services is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"I had an issue with my water softener which was looked at by two companies. The first company automatically said to replace. TMO saw that the problem was valves were turned off and opened them. They took water samples from my well and came back after the softener was working for a few days and retested. The softener was working so no work was needed There was no charge not even a service call fee. They were professional and knowledgeable and I will definitely hire them for any future plumbing needs"

Steven K on October 2024

TMO Services is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"I had an issue with my water softener which was looked at by two companies. The first company automatically said to replace. TMO saw that the problem was valves were turned off and opened them. They took water samples from my well and came back after the softener was working for a few days and retested. The softener was working so no work was needed There was no charge not even a service call fee. They were professional and knowledgeable and I will definitely hire them for any future plumbing needs"

Steven K on October 2024


Fast & Serious Pipe Repair Drain Cleaning
926 Neall Ave
5.00(
4
)
Approved Pro
Fast & Serious Pipe Repair Drain Cleaning
926 Neall Ave
5.00(
4
)
Approved Pro
Customers say: Quick response
4 years of experience
Free onsite estimate

Fast & Serious Pipe Repair Drain Cleaning 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.

"Excellent work quick and clean oh and affordable would definitely recommend"

Eligio G on April 2025

Fast & Serious Pipe Repair Drain Cleaning 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.

"Excellent work quick and clean oh and affordable would definitely recommend"

Eligio G on April 2025


Alpha Omega Heating & Cooling, Inc.
107 Russell St
4.78(
23
)
Approved Pro
Alpha Omega Heating & Cooling, Inc.
107 Russell St
4.78(
23
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
45 local quotes requested

Alpha Omega Heating and Cooling, Inc., is your premier choice for heating, air conditioning and indoor air quality products. Our extensive knowledge and proven experience separates us from the rest of the pack. We deliver unmatched service and support. Call us first.

"He might know what heâ s doing so that he can get paid. But good luck in trying to get him to service anything after the fact. My review is based on three AC split units. He will not respond and God forbid you need him in an emergency, because Night one of his unit Leaked. Iâ ve had issues with him in the past and decided to give him a second chance. But there wonâ t be a third. The people who referred me to him or now using someone else for the same reason."

Maria G on May 2024

Alpha Omega Heating and Cooling, Inc., is your premier choice for heating, air conditioning and indoor air quality products. Our extensive knowledge and proven experience separates us from the rest of the pack. We deliver unmatched service and support. Call us first.

"He might know what heâ s doing so that he can get paid. But good luck in trying to get him to service anything after the fact. My review is based on three AC split units. He will not respond and God forbid you need him in an emergency, because Night one of his unit Leaked. Iâ ve had issues with him in the past and decided to give him a second chance. But there wonâ t be a third. The people who referred me to him or now using someone else for the same reason."

Maria G on May 2024


Avatar for Mcfarlane Mechanical
Mcfarlane Mechanical
5.00(
2
)
Approved Pro
Mcfarlane Mechanical
5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We specialize in Piping, plumbing, water heaters, boilers and whole house filtration . New installing, service and rough-ins

"EVERYTHING WAS AMAZING...... CUSTOMER SERVICE EXCELLENT, COMPLETED THE JOB BEFORE THE DATE PROMISED, ALSO WORKED WITH ME ON THE COST OF EVERYTHING. "PLUMBING WORK IS EXPENSIVE" IF YOU GUYS DONT KNOW BUT OVERALL I HIGHLY RECOMEND HIM TO EVERYBODY IF YOU WANT THE WORK DONE RIGHT N NOT GET SCAMMED THIS IS YOUR GUY BECAUSE HES MINE NOW FOR ANY PLUMBING ISSUE IN THE FUTURE THANKS AGAIN AND SEE YOU SOON"

Wayne M on October 2024

We specialize in Piping, plumbing, water heaters, boilers and whole house filtration . New installing, service and rough-ins

"EVERYTHING WAS AMAZING...... CUSTOMER SERVICE EXCELLENT, COMPLETED THE JOB BEFORE THE DATE PROMISED, ALSO WORKED WITH ME ON THE COST OF EVERYTHING. "PLUMBING WORK IS EXPENSIVE" IF YOU GUYS DONT KNOW BUT OVERALL I HIGHLY RECOMEND HIM TO EVERYBODY IF YOU WANT THE WORK DONE RIGHT N NOT GET SCAMMED THIS IS YOUR GUY BECAUSE HES MINE NOW FOR ANY PLUMBING ISSUE IN THE FUTURE THANKS AGAIN AND SEE YOU SOON"

Wayne M on October 2024


Avatar for Santucci Bros Contracting
Santucci Bros Contracting
31 Allapartus Cir
4.82(
45
)
Approved Pro
Santucci Bros Contracting
31 Allapartus Cir
4.82(
45
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
464 local quotes requested

Santucci Bros offers free estimates for professional work. We are a total Home Remodeling Company. Both inside & outside work….kitchen & Bath remodels. Outside masonry, or total house build. Dependable, licensed, &references available. DBA: Santucci Bros Contracting.

"Hector and his team were great. Highly recommend! Quality work and reasonably priced. I intend to use this company again."

Josh D on February 2025

Santucci Bros offers free estimates for professional work. We are a total Home Remodeling Company. Both inside & outside work….kitchen & Bath remodels. Outside masonry, or total house build. Dependable, licensed, &references available. DBA: Santucci Bros Contracting.

"Hector and his team were great. Highly recommend! Quality work and reasonably priced. I intend to use this company again."

Josh D on February 2025


Avatar for HM Construction & Painting
HM Construction & Painting
60 Newtown Rd
4.57(
148
)
Approved Pro
HM Construction & Painting
60 Newtown Rd
4.57(
148
)
Approved Pro
Customers say: Quick response
1054 local quotes requested
32 years of experience

HM Construction and Painting was founded in 1990 to provide customers with the most incredible home remodeling and renovating services in Fairfield County. We Provide Architectural and Structural Drawing Design Services. We provide general contractor services to both residential and commercial customers. Above all, our goal is to give you an extraordinary standard of excellence, quality, and professionalism each and every time you hire us. We know that referrals run businesses, so we strive to give you the best experience possible. From painting to carpentry home repair and from roofing to flooring, there is very little we can’t do! We specialize in bringing homeowners’ dreams to life. Whether you’re making a few cosmetic changes or you’re gutting a room and starting over, we are fully equipped to take your project on. We proudly provide service to Greenwich, CT and Darien, CT, as well as the surrounding areas! Ready to get started? Take a look at our Services page to see what we can offer you. Don’t forget, we offer free estimates at your convenience, so feel free to contact us at any time for an estimate.

"We were very pleased with the job performed. Helio's team expanded and renovated our small master bathroom. We took out a large closet and converted it into our shower. Once started, they worked quickly and efficiently. We did have a few small hiccups, namely using our garage to cut tiles and mix thinset, which created an exorbitant amount of dust coating my tools, bikes, and anything else that was stored in the garage. We also had an issue with the cleanliness of the home after some of the workers left, however, after we brought it to Helio's attention, he made sure to tell the team to do a better job moving forward. Contract was a little confusing, so I would encourage many questions to clarify things ahead of time such as timeline for selecting certain items, confirming when the next payments are due etc. All in all, we're pleased with the project and how it turned out."

Mike M on February 2025

HM Construction and Painting was founded in 1990 to provide customers with the most incredible home remodeling and renovating services in Fairfield County. We Provide Architectural and Structural Drawing Design Services. We provide general contractor services to both residential and commercial customers. Above all, our goal is to give you an extraordinary standard of excellence, quality, and professionalism each and every time you hire us. We know that referrals run businesses, so we strive to give you the best experience possible. From painting to carpentry home repair and from roofing to flooring, there is very little we can’t do! We specialize in bringing homeowners’ dreams to life. Whether you’re making a few cosmetic changes or you’re gutting a room and starting over, we are fully equipped to take your project on. We proudly provide service to Greenwich, CT and Darien, CT, as well as the surrounding areas! Ready to get started? Take a look at our Services page to see what we can offer you. Don’t forget, we offer free estimates at your convenience, so feel free to contact us at any time for an estimate.

"We were very pleased with the job performed. Helio's team expanded and renovated our small master bathroom. We took out a large closet and converted it into our shower. Once started, they worked quickly and efficiently. We did have a few small hiccups, namely using our garage to cut tiles and mix thinset, which created an exorbitant amount of dust coating my tools, bikes, and anything else that was stored in the garage. We also had an issue with the cleanliness of the home after some of the workers left, however, after we brought it to Helio's attention, he made sure to tell the team to do a better job moving forward. Contract was a little confusing, so I would encourage many questions to clarify things ahead of time such as timeline for selecting certain items, confirming when the next payments are due etc. All in all, we're pleased with the project and how it turned out."

Mike M on February 2025


Avatar for Hire Her Home Improvement Inc.
Hire Her Home Improvement Inc.
PO Box 742
4.68(
307
)
Approved Pro
Hire Her Home Improvement Inc.
PO Box 742
4.68(
307
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
516 local quotes requested

Hire Her Inc, proud winner of the Super Service Award 14 years in a row, specializes in home remodel & renovations. As a female-owned and owner-operated company we bring passion, commitment and dedication to each home improvement, remodel and renovation we take on. We offer a variety of services from kitchen remodel & renovation, bathroom remodel & renovation, and basement remodel & renovation to painting and flooring services. Contact us about a specific service if you are unsure. Owner operated. Rarely uses subs. Cost is determined by the job. No travel charges. For the fastest response, please email me at hirehernow@optonline.net

"It hard to overstate how wonderful an experience my family had with Hire Her Home Improvement. Angela and her team were consummate professionals from our first contact to when the job wrapped. Angela (the owner) was impressively responsive, collaborative and spoke frankly about what work was feasible, what would be challenging and what things would cost. Her friendly, frank and collaborative nature made me trust her immediately. We had planned to start the attic renovation in mid March but a slot opened up in her schedule and we wound up starting six weeks early. The first thing that caught my attention was how prompt they were. If the start time was 8am, they would be outside at 7:55. As a professional project manager, that really made me happy. Angela’s crew (Jason and Steve) and the subcontractors were all expert craftsmen and worked efficiently, collaboratively and took wonder care to protect the rest of my home. One instance I want to call out was how one day I was delayed in coming home from running an errand. While I was out, the work wrapped for the day but Jason didn’t have a key lock the house. So Jason had the rest of the crew go home and he waited on my porch until I got home. I was just blown away. Last but not least, I want to talk about the work. They took a completely unfinished uninsulated 350 sq foot space in my attic and turned it in to a fantastic office space that’s quickly become my favorite room in the house. Everything was beautifully finished and every detail was considered. On her final walk through, Angela ever saw a few small things that she wanted to push further and had the crew come back and make a few tweaks. From start to finish the whole project took just over three weeks. Friends, if you’re looking to have anything done to improve your home. Look no further than Hire Her Home Improvement. You’ll be glad you did."

Jeremy N on April 2022

Hire Her Inc, proud winner of the Super Service Award 14 years in a row, specializes in home remodel & renovations. As a female-owned and owner-operated company we bring passion, commitment and dedication to each home improvement, remodel and renovation we take on. We offer a variety of services from kitchen remodel & renovation, bathroom remodel & renovation, and basement remodel & renovation to painting and flooring services. Contact us about a specific service if you are unsure. Owner operated. Rarely uses subs. Cost is determined by the job. No travel charges. For the fastest response, please email me at hirehernow@optonline.net

"It hard to overstate how wonderful an experience my family had with Hire Her Home Improvement. Angela and her team were consummate professionals from our first contact to when the job wrapped. Angela (the owner) was impressively responsive, collaborative and spoke frankly about what work was feasible, what would be challenging and what things would cost. Her friendly, frank and collaborative nature made me trust her immediately. We had planned to start the attic renovation in mid March but a slot opened up in her schedule and we wound up starting six weeks early. The first thing that caught my attention was how prompt they were. If the start time was 8am, they would be outside at 7:55. As a professional project manager, that really made me happy. Angela’s crew (Jason and Steve) and the subcontractors were all expert craftsmen and worked efficiently, collaboratively and took wonder care to protect the rest of my home. One instance I want to call out was how one day I was delayed in coming home from running an errand. While I was out, the work wrapped for the day but Jason didn’t have a key lock the house. So Jason had the rest of the crew go home and he waited on my porch until I got home. I was just blown away. Last but not least, I want to talk about the work. They took a completely unfinished uninsulated 350 sq foot space in my attic and turned it in to a fantastic office space that’s quickly become my favorite room in the house. Everything was beautifully finished and every detail was considered. On her final walk through, Angela ever saw a few small things that she wanted to push further and had the crew come back and make a few tweaks. From start to finish the whole project took just over three weeks. Friends, if you’re looking to have anything done to improve your home. Look no further than Hire Her Home Improvement. You’ll be glad you did."

Jeremy N on April 2022


Avatar for Above & Beyond Contracting
Above & Beyond Contracting
47 Ethelridge Rd
4.81(
80
)
Approved Pro
Above & Beyond Contracting
47 Ethelridge Rd
4.81(
80
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
301 local quotes requested

Above & Beyond Contracting excels in all areas of residential home improvement and commercial needs. Our work includes state of the art kitchens, baths, basements, windows/doors, decks and more. Our commitment to the customer is our number one priority. Our staff is professional, dependable, and honest. Let us make your design ideas a reality. 914-681-6080.

"Hiring a contractor can be challenging. Let me simplify the process for you. Hire Above & Beyond Contracting for your next home project. Bud and his team just renovated our basement and we couldn’t be more satisfied with the experience. They turned our cold, dark basement into a bright entertainment room with a sports bar. They brought our vision to life on schedule and on budget. Bud is extremely talented, knowledgeable and responds to text messages within minutes. When he tells you that he’ll be at your house by 8:00 AM, he’ll be there at 8:00 on the dot. He truly cares about the quality of his work and treats his projects as if they were being done within his own home. After spending 4 months working with him, Bud isn’t just our contractor for the next project…he’s a friend."

Jason K on March 2024

Above & Beyond Contracting excels in all areas of residential home improvement and commercial needs. Our work includes state of the art kitchens, baths, basements, windows/doors, decks and more. Our commitment to the customer is our number one priority. Our staff is professional, dependable, and honest. Let us make your design ideas a reality. 914-681-6080.

"Hiring a contractor can be challenging. Let me simplify the process for you. Hire Above & Beyond Contracting for your next home project. Bud and his team just renovated our basement and we couldn’t be more satisfied with the experience. They turned our cold, dark basement into a bright entertainment room with a sports bar. They brought our vision to life on schedule and on budget. Bud is extremely talented, knowledgeable and responds to text messages within minutes. When he tells you that he’ll be at your house by 8:00 AM, he’ll be there at 8:00 on the dot. He truly cares about the quality of his work and treats his projects as if they were being done within his own home. After spending 4 months working with him, Bud isn’t just our contractor for the next project…he’s a friend."

Jason K on March 2024


Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
422 New York 52
4.42(
19
)
Approved Pro
Cassidy Plumbing and Heating, Inc
422 New York 52
4.42(
19
)
Approved Pro
Customers say: True professional
1200 local quotes requested
33 years of experience

We are a fully licensed and insured plumbing and heating service offering comprehensive services for plumbing and heating in Westchester NY, Putnam NY, Southern Dutchess and the surrounding areas. Our services include toilet repair, hot water heaters, leak repair, drain cleaning, boiler services and much more. A complete listing of the services offered by our professional plumbers can be found on our website. In addition to plumbing and heating services for existing homes and new construction, we offer 24-hour emergency service for plumbing emergencies. Check our website www.cassidyplumbinginc.com for our specials.

"Two pros came to complete the job. They were courteous and communicated well. No issues whatsoever."

Ed V on April 2025

We are a fully licensed and insured plumbing and heating service offering comprehensive services for plumbing and heating in Westchester NY, Putnam NY, Southern Dutchess and the surrounding areas. Our services include toilet repair, hot water heaters, leak repair, drain cleaning, boiler services and much more. A complete listing of the services offered by our professional plumbers can be found on our website. In addition to plumbing and heating services for existing homes and new construction, we offer 24-hour emergency service for plumbing emergencies. Check our website www.cassidyplumbinginc.com for our specials.

"Two pros came to complete the job. They were courteous and communicated well. No issues whatsoever."

Ed V on April 2025

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Tankless water heater installations FAQs

Yes, although they have a higher upfront cost compared to traditional units, tankless water heaters can be worth the investment for many homeowners. They heat water on demand, eliminating standby energy losses and leading to 24% to 34% greater energy efficiency for homes using up to 41 gallons of hot water daily. Tankless units last longer—around 20 years with proper maintenance—and require less space than traditional units. They also reduce the risk of leaks and water damage since there's no tank to corrode and fail.

Tankless water heaters, including gas-powered models, do require electricity to operate components like the ignition and control systems. This means they won't function during a power outage. If you live in an area prone to outages and want to ensure a continuous hot water supply, consider installing a battery backup system or generator to keep your tankless water heater running when the power goes out.

You should set your tankless water heater to 120 degrees Fahrenheit for optimal safety and efficiency, as recommended by the U.S. Consumer Product Safety Commission. Setting the temperature at 120 degrees prevents scalding accidents, particularly for children and the elderly, and reduces energy consumption. Temperatures above 140 degrees increase the risk of burns and promote mineral buildup, which can decrease the system's efficiency.

A 20-minute shower uses 50 to 60 gallons of water, assuming a flow rate of 2.5 to 3 gallons per minute. A typical whole-house tankless water heater can produce 4 to 8 gallons of hot water per minute, providing continuous hot water for long showers. By installing low-flow showerheads and reducing shower time, you decrease water consumption and energy costs, maximizing the efficiency of your tankless system.

With proper maintenance, a tankless water heater lasts around 20 years, significantly longer than conventional tank water heaters, which last between 8 and 12 years. Regular inspections and timely repairs can further extend its lifespan. To keep your tankless system operating efficiently, have it inspected or serviced annually and address any minor issues promptly by contacting a local tankless water heater repair service.

The homeowners guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
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