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Tankless water heater installers in Portland
We pride our company on reliability, great communication, integrity and quality work. We are experts in our plumbing and heating and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.
"Best and most responsive plumber in the Southern Maine area. Highly recommend!!"
Susan H on April 2024
We pride our company on reliability, great communication, integrity and quality work. We are experts in our plumbing and heating and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.
"Best and most responsive plumber in the Southern Maine area. Highly recommend!!"
Susan H on April 2024
BIG WAVE PLUMBING & GAS, LLC 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.
"Elliot was kind, courteous, professional and extraordinarily helpful. In his initial visit he looked at the damage, and the surrounding area, and provided me with multiple options to correct the problem. He had researched Reverse Osmosis systems, and discussed a newer product that was infinately superior to my current system. He recommended updates to piping as I have an older home, and some older installations did not meet current code requirements. I found Eliot to me very knowledgable, prompt and trustworthy....I Highly recommend him!!!!"
Elizabeth P on March 2025
BIG WAVE PLUMBING & GAS, LLC 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.
"Elliot was kind, courteous, professional and extraordinarily helpful. In his initial visit he looked at the damage, and the surrounding area, and provided me with multiple options to correct the problem. He had researched Reverse Osmosis systems, and discussed a newer product that was infinately superior to my current system. He recommended updates to piping as I have an older home, and some older installations did not meet current code requirements. I found Eliot to me very knowledgable, prompt and trustworthy....I Highly recommend him!!!!"
Elizabeth P on March 2025
Greenhalgh Plumbing is your one stop shop for all of your plumbing needs! 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. Give us a call today!
"He promised to come on three different days and never showed up."
Roger R on July 2023
Greenhalgh Plumbing is your one stop shop for all of your plumbing needs! 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. Give us a call today!
"He promised to come on three different days and never showed up."
Roger R on July 2023
Customized Plumbing and Heating believes that the customer comes first. No matter what you need from toilets to fixtures and everything in between. With an unparalleled attention to detail we will assure you that your project will be completed on time and within budget. With over a decade of professional experience and expertise behind us, you can count on us to treat you right. We appreciate your referral business and look forward to working with you soon. Remember, we fix where you go!
"Amazing experience. Will definitely work with again!"
Ceren P on May 2024
Customized Plumbing and Heating believes that the customer comes first. No matter what you need from toilets to fixtures and everything in between. With an unparalleled attention to detail we will assure you that your project will be completed on time and within budget. With over a decade of professional experience and expertise behind us, you can count on us to treat you right. We appreciate your referral business and look forward to working with you soon. Remember, we fix where you go!
"Amazing experience. Will definitely work with again!"
Ceren P on May 2024
Thank you for visiting High Flow Plumbing and Heating LLC. We are your locally owned and operated plumbing specialists based in North Berwick, ME. We service residential clients throughout ME and NH. Contact us now for your free estimate--we look forward to working with you soon!
"High Flow Plumbing and Heating is outstanding. Christian contacted me quickly, arrived exactly on time, and did a great job updating my bath fixtures. Very reliable and professional. Five stars!"
Denise C on April 2025
Thank you for visiting High Flow Plumbing and Heating LLC. We are your locally owned and operated plumbing specialists based in North Berwick, ME. We service residential clients throughout ME and NH. Contact us now for your free estimate--we look forward to working with you soon!
"High Flow Plumbing and Heating is outstanding. Christian contacted me quickly, arrived exactly on time, and did a great job updating my bath fixtures. Very reliable and professional. Five stars!"
Denise C on April 2025
Marquis Well & Pump is a complete water service company. We install and service water pump systems, softeners, all types water filtration, well drilling, and geothermal. We also provide these services: water testing, well inspections including pump testing, water pump system inspections, and filtration system inspections. If you have a problem with your water call "We have the Solution".
"Happy to report 5 star service! Very responsive, knowledgeable and helpful. Educated us about our new home and its systems, as well as diagnosing the next steps to resolve our problems. Left us smiling!! Would highly recommend to others and would call on Marquis again."
Leslie D on August 2022
Marquis Well & Pump is a complete water service company. We install and service water pump systems, softeners, all types water filtration, well drilling, and geothermal. We also provide these services: water testing, well inspections including pump testing, water pump system inspections, and filtration system inspections. If you have a problem with your water call "We have the Solution".
"Happy to report 5 star service! Very responsive, knowledgeable and helpful. Educated us about our new home and its systems, as well as diagnosing the next steps to resolve our problems. Left us smiling!! Would highly recommend to others and would call on Marquis again."
Leslie D on August 2022
Indoor Air Quality, Heating, Air Conditioning and Indoor Air Quality Products, and Commercial Services for your business. Our Exclusive Written Guarantees Are Designed to Protect You and Your Home Request a free home estimate, Design your own heating and cooling system, Shop for filters or accessories online, Request an In-Home Aire Quality Survey .
"Total Ripoff! My boiler stopped working the other day and my usual company was unable to come out due to being short-staffed that day. I resorted to google and unfortunately came across Aire Serv. Their technician (who was very nice) came out to assess the situation and determined it was caused by a damaged pilot assembly. After calling around for replacement parts, I was told that the parts were out of stock until later in the week. Despite this, I was still charged $234 for the trip fee and diagnostic fee. I was then quoted $1112 for the repairs to be done once the parts were in. I shared this quote with my normal company and they were appalled! Thankfully they fixed the issue for less than half the price Aire Serv was going to charge me! PLEASE do not use this money-grubbing company, and instead use a local independent company if you need heating work done!"
Brian F on March 2025
Indoor Air Quality, Heating, Air Conditioning and Indoor Air Quality Products, and Commercial Services for your business. Our Exclusive Written Guarantees Are Designed to Protect You and Your Home Request a free home estimate, Design your own heating and cooling system, Shop for filters or accessories online, Request an In-Home Aire Quality Survey .
"Total Ripoff! My boiler stopped working the other day and my usual company was unable to come out due to being short-staffed that day. I resorted to google and unfortunately came across Aire Serv. Their technician (who was very nice) came out to assess the situation and determined it was caused by a damaged pilot assembly. After calling around for replacement parts, I was told that the parts were out of stock until later in the week. Despite this, I was still charged $234 for the trip fee and diagnostic fee. I was then quoted $1112 for the repairs to be done once the parts were in. I shared this quote with my normal company and they were appalled! Thankfully they fixed the issue for less than half the price Aire Serv was going to charge me! PLEASE do not use this money-grubbing company, and instead use a local independent company if you need heating work done!"
Brian F on March 2025
With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
Plumbing services | Plumbing repair | Water heater replacement | Water heater installation | Drain cleaning services | Clogged drain | Boiler installation
"Rob was great! Excellent communication and follow up."
Danny L on November 2024
Plumbing services | Plumbing repair | Water heater replacement | Water heater installation | Drain cleaning services | Clogged drain | Boiler installation
"Rob was great! Excellent communication and follow up."
Danny L on November 2024
ZOOM DRAIN provides sewer and drain cleaning and repairs throughout Southern and Central Maine. Our team of professionals focus on providing you with safe & proven solutions, fast turnaround times and a 30-day satisfaction guarantee. We are available 24/7/365 so call ZOOM DRAIN today to schedule an appointment! We offer Residential and Commercial: Drain Cleaning; Drain Installation; Ejector Pump Installation & Replacement; Grease Trap Pumping; Pump Pit Repair; Sewer Line Installation & Replacement; Sump Pump Installation; Sewer Services; Sump Pump Repair; Garbage Disposal Repair; Ejector Pump Repair; Pump Pit Installation & Replacement; Sewer Line Hydro-jetting; Sewer Line Repair; Toilet Repair; Sewer & Drain Inspections
"We called late on a Saturday not sure what the problem with our toilet was beyond the classic “it won’t flush the water down.” Tamara was able to walk me through the troubleshooting process to determine if they were the right company to help me, in other words was my issue drain related or more of a toilet hardware/plumbing issue. Once we determined it was the drain she was able to give me an estimate and get someone to come out. Less than an hour later the technician called to let me know he was on the way. Once he arrived he did some more troubleshooting and quickly determined what was causing the issue and resolved it. There was no mess, in fact he left the bathroom cleaner than he found it. Total cost came in under the estimate and now my toilet works better than it ever has. Thank you Ecoclean for your prompt and professional service."
Melissa T on September 2018
ZOOM DRAIN provides sewer and drain cleaning and repairs throughout Southern and Central Maine. Our team of professionals focus on providing you with safe & proven solutions, fast turnaround times and a 30-day satisfaction guarantee. We are available 24/7/365 so call ZOOM DRAIN today to schedule an appointment! We offer Residential and Commercial: Drain Cleaning; Drain Installation; Ejector Pump Installation & Replacement; Grease Trap Pumping; Pump Pit Repair; Sewer Line Installation & Replacement; Sump Pump Installation; Sewer Services; Sump Pump Repair; Garbage Disposal Repair; Ejector Pump Repair; Pump Pit Installation & Replacement; Sewer Line Hydro-jetting; Sewer Line Repair; Toilet Repair; Sewer & Drain Inspections
"We called late on a Saturday not sure what the problem with our toilet was beyond the classic “it won’t flush the water down.” Tamara was able to walk me through the troubleshooting process to determine if they were the right company to help me, in other words was my issue drain related or more of a toilet hardware/plumbing issue. Once we determined it was the drain she was able to give me an estimate and get someone to come out. Less than an hour later the technician called to let me know he was on the way. Once he arrived he did some more troubleshooting and quickly determined what was causing the issue and resolved it. There was no mess, in fact he left the bathroom cleaner than he found it. Total cost came in under the estimate and now my toilet works better than it ever has. Thank you Ecoclean for your prompt and professional service."
Melissa T on September 2018
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
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