Top-rated tankless water heater installers.

Get matched with top tankless water heater installers in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Tankless water heater installers in Ithaca

Avatar for Anderson Water & Power
Anderson Water & Power
79 Saginaw Drive
4.78(
505
)
Approved Pro
Anderson Water & Power
79 Saginaw Drive
4.78(
505
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
210 local quotes requested

Anderson Water-Power-Air is a family-owned business serving New York State, providing the highest-quality products and service available in the industry.

"Yes job done .they were very professional I would recommend them to friends and family"

William P on June 2025

Anderson Water-Power-Air is a family-owned business serving New York State, providing the highest-quality products and service available in the industry.

"Yes job done .they were very professional I would recommend them to friends and family"

William P on June 2025


Avatar for 4 Power Now Inc.
4 Power Now Inc.
6085 Court St Road
4.33(
21
)
Approved Pro
4 Power Now Inc.
6085 Court St Road
4.33(
21
)
Approved Pro
Customers say: Terrific value
27 local quotes requested
37 years of experience

Our Company We are dedicated to finding the right power solution to fit your needs.; Flexible Financing* Financing options for your Generac purchases. Our Services. Interactive In-Home Assessment During your free quote, we will discuss your backup power needs and explain the installation process to help you choose the best generator, heating, plumbing, electrical, or water heater to match your needs. We always strive to meet our Motto, one call does it all!

"All seems good"

Chris M on November 2023

Our Company We are dedicated to finding the right power solution to fit your needs.; Flexible Financing* Financing options for your Generac purchases. Our Services. Interactive In-Home Assessment During your free quote, we will discuss your backup power needs and explain the installation process to help you choose the best generator, heating, plumbing, electrical, or water heater to match your needs. We always strive to meet our Motto, one call does it all!

"All seems good"

Chris M on November 2023


Avatar for Auchinachie Plumbing LTD
Auchinachie Plumbing LTD
42 Frederick Street
3.97(
159
)
Approved Pro
Auchinachie Plumbing LTD
42 Frederick Street
3.97(
159
)
Approved Pro
Customers say: True professional
450 local quotes requested
119 years of experience

We are your one stop spot for all of your HVAC and plumbing needs. We specialize in all facets of heating and air conditioning. We are extremely competitive and understand the value of building a relationship with our customers. We will go to all lengths to please our clients every needs. Once you use us, you'll never have to find another HVAC or plumbing contractor again.

"I hired this company to remove a cupboard and install a dishwasher in its place right next to the sink. He smashed up my cherry cabinet that I wanted to move to a different location and charged me $1800 for two hours of work. He did not even install the electric and now I have to pay someone to reconstruct a cabinet to match my current ones and pay an electrician. Outrageously expensive and incompetent."

Rebecca D on June 2025

We are your one stop spot for all of your HVAC and plumbing needs. We specialize in all facets of heating and air conditioning. We are extremely competitive and understand the value of building a relationship with our customers. We will go to all lengths to please our clients every needs. Once you use us, you'll never have to find another HVAC or plumbing contractor again.

"I hired this company to remove a cupboard and install a dishwasher in its place right next to the sink. He smashed up my cherry cabinet that I wanted to move to a different location and charged me $1800 for two hours of work. He did not even install the electric and now I have to pay someone to reconstruct a cabinet to match my current ones and pay an electrician. Outrageously expensive and incompetent."

Rebecca D on June 2025


Avatar for M&W Handymen
M&W Handymen
.
5.00(
10
)
Approved Pro
M&W Handymen
.
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
70 local quotes requested

M&W Remodeling is proud to provide bathroom and kitchen remodel services to the Finger Lakes community. We strive to satisfy all of our customers and will go the extra mile to make sure you're completely satisfied and the vision comes true. We work closely with each client to understand their unique needs and preferences, and our commitment to customer satisfaction means we won't rest until you are 100% happy with our work. Give us a call at the number above.

"In the course of this year, I have had these guys hang door, repair plaster, tile, paint, wallpaper, and repair a window sill. There is nothing they can’t handle! And now my bedroom is gorgeous."

Martha H on December 2024

M&W Remodeling is proud to provide bathroom and kitchen remodel services to the Finger Lakes community. We strive to satisfy all of our customers and will go the extra mile to make sure you're completely satisfied and the vision comes true. We work closely with each client to understand their unique needs and preferences, and our commitment to customer satisfaction means we won't rest until you are 100% happy with our work. Give us a call at the number above.

"In the course of this year, I have had these guys hang door, repair plaster, tile, paint, wallpaper, and repair a window sill. There is nothing they can’t handle! And now my bedroom is gorgeous."

Martha H on December 2024


Avatar for Norb Miller General Contractor
Norb Miller General Contractor
129 Elm Rd
4.39(
56
)
Approved Pro
Norb Miller General Contractor
129 Elm Rd
4.39(
56
)
Approved Pro
Customers say: Quality work
170 local quotes requested
47 years of experience

Norb Miller General Contractor of Dundee, NY specializes in remodeling services for over 30 years. We have an exceptional reputation in the Finger Lakes region for exceeding our customers' expectations. From kitchen additions, bathroom additions, remodeling and basement conversions to windows and siding, we are here to see your vision to a beautiful end result. Our fully insured company also helps in guiding and overseeing our valued customers' design process. When you want quality and affordable prices, we are here for you.

"Norb and his crew did a great job on all my projects. Highly recommend."

Douglas M on June 2024

Norb Miller General Contractor of Dundee, NY specializes in remodeling services for over 30 years. We have an exceptional reputation in the Finger Lakes region for exceeding our customers' expectations. From kitchen additions, bathroom additions, remodeling and basement conversions to windows and siding, we are here to see your vision to a beautiful end result. Our fully insured company also helps in guiding and overseeing our valued customers' design process. When you want quality and affordable prices, we are here for you.

"Norb and his crew did a great job on all my projects. Highly recommend."

Douglas M on June 2024


Avatar for Merrill Home Renovations & Contracting
Merrill Home Renovations & Contracting
45 Church Street
5.00(
4
)
Approved Pro
Merrill Home Renovations & Contracting
45 Church Street
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
137 local quotes requested

We specialize in: Decks, Siding, Windows and doors, Interior/ exterior framing, Drywall, trim, finishing work, New construction, Concrete pads, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"The service was amazing and it was great working with them. They were truly understanding."

Trever s on April 2023

We specialize in: Decks, Siding, Windows and doors, Interior/ exterior framing, Drywall, trim, finishing work, New construction, Concrete pads, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"The service was amazing and it was great working with them. They were truly understanding."

Trever s on April 2023


Avatar for Neli Virtual Appliance Repair
Neli Virtual Appliance Repair
143 Charlotte Ave
4.29(
573
)
Approved Pro
Neli Virtual Appliance Repair
143 Charlotte Ave
4.29(
573
)
Approved Pro
Customers say: Super punctual
61937 local quotes requested
9 years of experience

Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!

"They did fine"

Keavon R on May 2025

Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!

"They did fine"

Keavon R on May 2025


J&D Windows and Doors General Contracting, LLC.
Draper Avenue
4.97(
32
)
J&D Windows and Doors General Contracting, LLC.
Draper Avenue
4.97(
32
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Fully insured General Contracting company with free home estimates specializing in Windows and Doors. Our products have a life time warranty with them as well as a variety of different options to accommodate your wants, needs, and budgets! Check out our Facebook, google page, and website listed below for yourself to see that you’re in good hands with J&D! To help with your long and late work hours, we are now offering E-Quotes on all windows, sliding glass doors, and ProVia door products! Go to our website, click on E-Quotes to learn more.

"Ok so I am writing a review everywhere I can for David and crew. Basically havr been using David and J&D for every aspect of the house! Windows, Doors, Facade wall, Kitchen, Siding etc. Have yet to have any bad experience with these guys!! Wonderful, efficient, courteous, professional, and I cannot say this enough… what a crack up! Thank you so much guys for taking care of me and my winderful “new” home. It is an honor and a pleasure working with you!"

Danielle St M on September 2024

Fully insured General Contracting company with free home estimates specializing in Windows and Doors. Our products have a life time warranty with them as well as a variety of different options to accommodate your wants, needs, and budgets! Check out our Facebook, google page, and website listed below for yourself to see that you’re in good hands with J&D! To help with your long and late work hours, we are now offering E-Quotes on all windows, sliding glass doors, and ProVia door products! Go to our website, click on E-Quotes to learn more.

"Ok so I am writing a review everywhere I can for David and crew. Basically havr been using David and J&D for every aspect of the house! Windows, Doors, Facade wall, Kitchen, Siding etc. Have yet to have any bad experience with these guys!! Wonderful, efficient, courteous, professional, and I cannot say this enough… what a crack up! Thank you so much guys for taking care of me and my winderful “new” home. It is an honor and a pleasure working with you!"

Danielle St M on September 2024


R Stedge Contracting
No reviews
R Stedge Contracting
No reviews
15 years of experience

Experienced General Contractor with knowledge of all home repairs and maintenance. Kitchens, Baths, Drywall, interior/exterior painting , concrete, pavers, decks, roofing, siding, replacement windows , doors, garage doors, sidewalks, tile, flooring , window treatments, pressure washing . 24/hr and Handy Man services.

Experienced General Contractor with knowledge of all home repairs and maintenance. Kitchens, Baths, Drywall, interior/exterior painting , concrete, pavers, decks, roofing, siding, replacement windows , doors, garage doors, sidewalks, tile, flooring , window treatments, pressure washing . 24/hr and Handy Man services.


Sovereign Builders
PO Box 4945
5.00(
3
)
Sovereign Builders
PO Box 4945
5.00(
3
)
Customers say: Quick response
19 years of experience

Locally owned & operated construction company offering residential and light commercial services.

Locally owned & operated construction company offering residential and light commercial services.

...
Showing 1-10 of 237

FAQs for tankless water heater installation projects in Ithaca, NY

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 Ithaca, NY homeowners’ guide to tankless water heater installations
From average costs to expert advice, get all the answers you need to get your job done.
Plumber repairing water heater in the bathroom
Jun 25, 2025
Jun 25, 2025
Budget for water heater flush costs based on factors such as water heater size and type, the plumber’s experience level, related services, and more.
trench being dug to repair sewer main in backyard
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for sewer line replacement costs based on factors such as location, trenching, materials, repairs, landscaping, and more.
newly remodeled bathroom with new bath tub
Jun 21, 2025
Jun 21, 2025
Budget for bathtub replacement costs based on factors such as bathtub type, material, removal, hardware, labor, plumbing work, and more.
A woman fixing cistern in bathroom
Jun 21, 2025
Jun 21, 2025
Use this guide to budget for toilet repair costs based on factors such as problem type, replacement part prices, labor, and more.
A man installs a new shower
Jun 15, 2025
Jun 15, 2025
Looking to remodel your shower? Here’s how much it costs, what factors affect cost, and what to expect.
plumber cleaning a home sewer line in yard
Jun 15, 2025
Jun 15, 2025
Budget for main sewer line clog repair costs based on factors such as cleaning method, sewer age, project complexity, permits, labor, and more.
Share project details to get started.