Boston's Trusted
Tankless Water Heater Installation & Repair Specialists

© 2025 - N.E.T.R., Inc. All Rights Reserved.

New England’s Leading Company

For Residential Heating and Cooling, as Well as Commercial HVAC Systems

Committed to Our Client's Comfort

Home is where you share dinner with your family, play board games in the living room, and snuggle safely in bed at night. When a home is too cold or too hot, it makes the living space unbearable and families can’t engage comfortably in their activities.

Business owners rely on keeping even temperatures in their space to ensure productivity remains high and servers stay cool, preventing the loss of valuable data.

N.E.T.R., Inc. is here to help home and business owners install the best heating and air conditioning systems that fits their needs. Since 1989, we’ve installed heating and air conditioning systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work.

Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England.

Reviews 1000+

At N.E.T.R., Inc. we’ve done thousands of installations, repairs, and maintenance calls for heating and air conditioning, and we pride ourselves on our quality work and customer service. Below, read a sample of our over 1000 online reviews, or check out our Google, Facebook, and Better Business Bureau reviews and see for yourself.

Schedule an Emergency Service

We will provide you to with installation, repair or maintenance services that you require, all while providing excellent service.

Why Our Clients Use Us

If You Are Not Happy – We Are Not Happy And Guarantee Your Satisfaction

Elite residential and commercial HVAC expertise, led by our highly recognized founder

Highly trained and certified techs that do it right the first time

Customers praise our process of giving you a clear roadmap and doing exactly what we say we are going to do at the start of the project

National speakers/thought leaders on energy efficiency and ductless systems

Reasonable maintenance programs that keep you safe and save money in the long run Contractor

Case Studies

Just like any other type of heating equipment, there are some potential issues to be aware of, like:

• Mineral buildup. If you have a lot of minerals in your water, they can build up on the sides of the heater’s tubing, eventually leading to blockages and damage to the unit.
• The exhaust or air supply is blocked. Some tankless water heaters need to be vented and they won’t work properly if the exhaust air supply is blocked and the heater can’t get any ventilation.
• You haven’t reached the minimum flow rate. If your water doesn’t warm up, you may need more water pressure. This is because the sensor that tells the heater to start won’t trip unless you reach the minimum flow rate. So if your water is at a trickle, that’s probably why it won’t get warm.
• Your showers start out cold. If there’s cold water still in your pipes, your shower might be cold at first until heated water from the tankless unit can reach you. Even though the heater warms water instantly, it still has to travel through your pipes to get to you, which pushes existing cold water out first.

Overall, tankless water heaters are a great option for homes with high water usage or for people who don’t want to wait for a traditional electric or gas hot water heater to refill.

Can I install a tankless hot water heater myself?  

Tankless hot water heaters should always be professionally installed. There’s a risk of burns, electrocutions, and even gas leaks or explosions in the case of gas-powered tankless hot water heaters.

How much does it cost to have a tankless hot water heater installed?

Having a new tankless hot water heater installed in your home can cost anywhere between $5000 to $9000 depending on the type and size of heater you choose and where you want to have it installed.

How do I choose the right tankless hot water heater?

The tankless water heater you choose will depend on a number of factors like your budget, the size of your home, what you’re using the heater for, and the availability of fossil fuels in your area. An experienced water heater contractor can help you decide on the best option to suit your individual needs.

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We are New England’s leading HVAC contractor for Residential Heating and Cooling and Commercial HVAC systems.

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Schedule a Conversation

Do you have problems with heating and cooling? You can always call us at 781-933-6387, or enter your info into the form to schedule a conversation with one of our crew.

What We Do