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
Tankless water heater installers in Thiensville
PM Plumbing LLC 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.
"Friendly, on time. Fixed the issue in a very timely manner. Fair price. Would hire again"
Patricia F on January 2024
PM Plumbing LLC 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.
"Friendly, on time. Fixed the issue in a very timely manner. Fair price. Would hire again"
Patricia F on January 2024
Your trusted partner for all your plumbing needs, offering professional and reliable solutions for residential
"Jerry did a great job very pleasant to work with very professional and very reasonably priced"
Joel K on April 2025
Your trusted partner for all your plumbing needs, offering professional and reliable solutions for residential
"Jerry did a great job very pleasant to work with very professional and very reasonably priced"
Joel K on April 2025
We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.
"Chris, Dewisth and Clayton were all very professional, knowledgeable and polite from sales through installation and beyond. Installer, Dewisth was very thorough in his work and cleanliness throughout the whole project of demolition of the old bath and installation of the new shower. Highly recommend Mad City Windows & Baths!!!"
Terril P on May 2025
We are the premier home improvement company in Madison, Green Bay, Milwaukee & throughout Wisconsin with years of experience and countless home improvement projects to prove it. We’re locally owned and operated so we know what works best in this climate and we choose quality products designed with Wisconsin area homeowners in mind. Whether you need replacement windows, vinyl siding, bathrooms, or metal roofing our professional installers will leave your home looking great.
"Chris, Dewisth and Clayton were all very professional, knowledgeable and polite from sales through installation and beyond. Installer, Dewisth was very thorough in his work and cleanliness throughout the whole project of demolition of the old bath and installation of the new shower. Highly recommend Mad City Windows & Baths!!!"
Terril P on May 2025
Why Choose Big Dave’s? To state it as clearly as possible, we’re not the right fit for everyone. We’re not the fastest. We’re not the cheapest. But our clients say, we are the best! We absolutely insist on doing things right the first time. No excuses. Period. If you are demanding, hard to please, and/or persnickety, we’ll get along great. We refuse to settle for anything less than the very best, and our clients appreciate our attention to even the smallest detail. Contact us today to get the process started!
"The very best thing about Big Dave's is that he shows up when he says he will, he does the job we agreed on, and he cleans up after himself. Very different from any other GC I've dealt with in nearly forty years. Superior work at all times; fixes issues when required without question or demur. I'll have no other GC darken my doors ever again."
John B on September 2023
Why Choose Big Dave’s? To state it as clearly as possible, we’re not the right fit for everyone. We’re not the fastest. We’re not the cheapest. But our clients say, we are the best! We absolutely insist on doing things right the first time. No excuses. Period. If you are demanding, hard to please, and/or persnickety, we’ll get along great. We refuse to settle for anything less than the very best, and our clients appreciate our attention to even the smallest detail. Contact us today to get the process started!
"The very best thing about Big Dave's is that he shows up when he says he will, he does the job we agreed on, and he cleans up after himself. Very different from any other GC I've dealt with in nearly forty years. Superior work at all times; fixes issues when required without question or demur. I'll have no other GC darken my doors ever again."
John B on September 2023
We specialized in remodeling but also do new construction. We have a team of specialists in Drywall, mudding, taping, painting, and plumbing, installation of carpet, vinyl and tile. Installation of windows, interior and exterior doors.
We specialized in remodeling but also do new construction. We have a team of specialists in Drywall, mudding, taping, painting, and plumbing, installation of carpet, vinyl and tile. Installation of windows, interior and exterior doors.
Amethyst Contracting Inc, is an established progressive design, build, and remodeling company with over 30 years in the field. We are women owned and operated and offer a fresh perspective in a field traditionally male oriented. We are known for our unique holistic approach to design, and are a hands on builder giving each client a one of a kind result. Can't wait to chat!
"I have been very happy with Amethyst! When I first contacted them, I was shocked to have a real--and friendly--person pick up my call. They have responded in a similar manner throughout my work with them: prompt, friendly, and professional. Their design work is beautiful--creative while still sensitive and responsive to my opinions/ideas. I would highly recommend them!"
Julie S on May 2019
Amethyst Contracting Inc, is an established progressive design, build, and remodeling company with over 30 years in the field. We are women owned and operated and offer a fresh perspective in a field traditionally male oriented. We are known for our unique holistic approach to design, and are a hands on builder giving each client a one of a kind result. Can't wait to chat!
"I have been very happy with Amethyst! When I first contacted them, I was shocked to have a real--and friendly--person pick up my call. They have responded in a similar manner throughout my work with them: prompt, friendly, and professional. Their design work is beautiful--creative while still sensitive and responsive to my opinions/ideas. I would highly recommend them!"
Julie S on May 2019
Looking for reliable well and pump services? Look no further! Hahn's Water Well Pump Service Inc is your trusted choice in Milwaukee. As a family owned and operated business, we prioritize quality and customer satisfaction. Contact us today for all your well and pump needs!
"Ben was very responsive, answering the phone every time we called (never went to voice-mail), showed up on time, completed the work in a timely manner and delivered results. We would highly recommend him."
Sue L on July 2022
Looking for reliable well and pump services? Look no further! Hahn's Water Well Pump Service Inc is your trusted choice in Milwaukee. As a family owned and operated business, we prioritize quality and customer satisfaction. Contact us today for all your well and pump needs!
"Ben was very responsive, answering the phone every time we called (never went to voice-mail), showed up on time, completed the work in a timely manner and delivered results. We would highly recommend him."
Sue L on July 2022
We are a locally owned family business. We are your one stop shop! We offer services ranging from interior/exterior painting, re models, flooring, roofing, siding, windows, carpentry, tree removal, stump grinding, decks/porches, etc... We promise you will be happy with our services because we are 100% personable to each and every customers' needs. We know how hard it is to find an informative, reliable Contractor and that's who we are! We are professional and reliable, a "no nonsense" company. Please call for a free estimate.
"PAMM was excellent! They were competitively priced, timely and conscientious. The work was impeccable. I would highly recommend this company!"
Emily P on September 2024
We are a locally owned family business. We are your one stop shop! We offer services ranging from interior/exterior painting, re models, flooring, roofing, siding, windows, carpentry, tree removal, stump grinding, decks/porches, etc... We promise you will be happy with our services because we are 100% personable to each and every customers' needs. We know how hard it is to find an informative, reliable Contractor and that's who we are! We are professional and reliable, a "no nonsense" company. Please call for a free estimate.
"PAMM was excellent! They were competitively priced, timely and conscientious. The work was impeccable. I would highly recommend this company!"
Emily P on September 2024
Aqua Well & Pump Systems, Inc., is a 3rd generation; family owned & operated, well and pump service company, serving all of Southeastern Wisconsin. Our mission at Aqua is to provide our customers with a safe, reliable water supply, while safe guarding & promoting the protection of our most precious resource. To accomplish this mission, Aqua is dedicated to investing in promotion, equipment, & most of all people who share the same core values of knowledge, integrity, hard work, & honesty. Aqua provides pump & well drilling service for residential, industrial, commercial, & farm applications. services.
"First of all, very unprofessional on the phone (pretty much their way or the highway) and in person. They do not where covers for their boots and when it was mudding it was not pretty on our stairs. Smelt like smoke when they walked in the door. There is no follow up and we needed follow up work to be done and they would not return phone calls. This went on for weeks until we found someone else to do the work. DO NOT use this service."
Bob S on May 2018
Aqua Well & Pump Systems, Inc., is a 3rd generation; family owned & operated, well and pump service company, serving all of Southeastern Wisconsin. Our mission at Aqua is to provide our customers with a safe, reliable water supply, while safe guarding & promoting the protection of our most precious resource. To accomplish this mission, Aqua is dedicated to investing in promotion, equipment, & most of all people who share the same core values of knowledge, integrity, hard work, & honesty. Aqua provides pump & well drilling service for residential, industrial, commercial, & farm applications. services.
"First of all, very unprofessional on the phone (pretty much their way or the highway) and in person. They do not where covers for their boots and when it was mudding it was not pretty on our stairs. Smelt like smoke when they walked in the door. There is no follow up and we needed follow up work to be done and they would not return phone calls. This went on for weeks until we found someone else to do the work. DO NOT use this service."
Bob S on May 2018
We have the experience and dedication to get the job done right! Specializing in Remodeling services; 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! Call or click for your FREE estimate today!
We have the experience and dedication to get the job done right! Specializing in Remodeling services; 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! Call or click for your FREE estimate today!
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.
- Plumbing - Multiple Projects
- Shower Pan Install
- Plumbing for a Remodel or Addition - Install
- Plumbing Item Repair
- Water Heater - Repair or Service
- Sink Repair
- Steam Shower - Install
- Faucet Install or Replace
- Walk In Tub - Install or Replace
- Drain Repair
- Shower Install or Replace
- Pipe Repair
- Drain Line Breakage - Camera Locate
- Water Main - Install, Replace or Repair
- Sump Pump - Repair or Replace
- Drain Clog or Blockage - Clear
- Sewer Main - Clear
- Faucets, Fixtures and Pipes - Repair or Replace
- Plumbing Item Installation
- Sink Installation
- Pipe Installation
- Faucet Installation
- Toilet Install or Repair
- Whirlpool Bathtub Install or Replace
- Plumbing Multi-Item Installation
- Water Heater - Install or Replace
- Sewer Main - Install, Replace or Repair
- Drain Installation
- Plumbing Multi-item Repair
- Toilet Installation
- Bathtub Install or Replace
- Sump Pump or Interior Foundation Drains - Install
- Birmingham
- Phoenix
- Tucson
- Fresno
- Long Beach
- Los Angeles
- Modesto
- Sacramento
- San Diego
- San Francisco
- San Jose
- Denver
- Hartford
- Washington DC
- Fort Lauderdale
- Jacksonville
- Miami
- Orlando
- Tampa
- Atlanta
- Chicago
- Indianapolis
- Louisville
- New Orleans
- Baltimore
- Boston
- Detroit
- Grand Rapids
- Minneapolis
- Saint Paul
- Kansas City
- Saint Louis
- Las Vegas
- Albany
- New York
- Asheville
- Charlotte
- Greensboro
- Raleigh
- Winston Salem
- Cincinnati
- Cleveland
- Columbus
- Oklahoma City
- Portland
- Harrisburg
- Philadelphia
- Pittsburgh
- Providence
- Memphis
- Nashville
- Austin
- Dallas
- El Paso
- Fort Worth
- Houston
- San Antonio
- Salt Lake City
- Norfolk
- Richmond
- Virginia Beach
- Seattle
- Madison
- Milwaukee
Get our Angi-powered app
