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Ready to upgrade to endless hot water and lower energy bills? Tankless water heaters heat water on demand, meaning you never run out and you never pay to keep a tank hot when no one’s using it. 128 Plumbing, Heating, Cooling & Electric has specialized in tankless water heater installation throughout Seabrook, NH since 1992.
- Tankless water heater installation and replacement
- Gas and electric tankless water heater systems
- Tankless water heater sizing and capacity assessments
- Water, gas, and venting connection installation
- Tankless water heater maintenance and flushing services
- Tankless water heater repair and troubleshooting services
CALL 128 SKILLS
Here is a quick list of the top heating services we offer:
Why Upgrade to a Tankless Water Heater?
Traditional tank water heaters store and continuously heat 40 to 80 gallons of water around the clock, whether you need it or not. Tankless systems eliminate standby heat loss entirely, providing hot water only when a tap is opened. Homeowners who switch typically see energy savings of 20 to 35% on water heating costs. Tankless units also last significantly longer, often 20 years or more. If you’re not sure whether tankless is right for your home, our team can also walk you through traditional water heater replacement options in Seabrook.
Rebates and Incentives for Seabrook Homeowners
Qualifying tankless water heater installations in New Hampshire may be eligible for rebates and incentives that significantly reduce your upfront investment. 128 Plumbing, Heating, Cooling & Electric will help you navigate available programs and make sure your installation qualifies. We also offer flexible financing options to make the upgrade accessible for every budget.
Our Tankless Installation Process
A proper tankless installation involves more than swapping out units. Our technicians assess your home’s hot water demand to select the correct unit size, evaluate your gas line or electrical capacity and upgrade if needed, install the new unit per manufacturer and code requirements, and test the system fully before leaving. We also handle all necessary permits. Explore all of our plumbing services in Seabrook while you’re here.
Get a Free Estimate in Seabrook Today
128 Plumbing, Heating, Cooling & Electric offers free estimates for tankless water heater installation in Seabrook, NH. Our team will assess your home, explain your options, and give you a clear upfront price with no pressure. See everything we offer at our Seabrook services hub.
Why Choose 128 for your Tankless Water Heater Installation in Seabrook, NH?
We’re A Proud Heat Pump Installer of Mass Save®
We’ve helped thousands of homeowners learn about Mass Save financing and rebates. Call or message us now to learn about the process.
Official Home Services Company of the Boston Red Sox
We are proud to say that we’re the first ever Official Home Services Company of the Boston Red Sox!
Ask about our loyalty program: base+ membership
Our whole-home loyalty membership allows for exclusive visits & benefits, SmartHome access, and peace of mind for your plumbing, HVAC, and electrical services from attic to basement
Frequently Asked Questions
Why choose 128 for tankless water heater installation in Seabrook, NH?
At 128 Plumbing, Heating, Cooling & Electric, our licensed plumbers specialize in professional tankless water heater installations designed to deliver reliable hot water and improved energy efficiency. We help homeowners select the right system, ensure proper sizing, and complete installations according to manufacturer specifications for long-term performance.
How much does tankless water heater installation cost in Seabrook, NH?
Tankless installation costs vary based on unit type (gas or electric), whether gas line or electrical upgrades are needed, and the specific model selected. We provide detailed estimates so you’ll have a clear understanding of the project scope and cost before work begins.
How long does tankless installation take?
Most tankless water heater installations are completed in 3 to 5 hours. If gas line modifications, venting updates, or electrical upgrades are required, additional time may be needed.
Can a tankless water heater handle multiple showers at once?
Yes, when properly sized. Correct sizing is one of the most important parts of the installation process. Our technicians calculate your household’s peak hot water demand and recommend a system capable of supplying sufficient hot water to multiple fixtures simultaneously.
How long do tankless water heaters last?
Tankless water heaters typically last 20 years or longer with proper maintenance, which is significantly longer than many traditional tank water heaters. Regular service helps maximize efficiency and extend equipment lifespan.
Do I need to do anything to maintain a tankless water heater?
Yes. Tankless water heaters benefit from annual maintenance, including descaling to remove mineral buildup and cleaning or inspecting filters and system components. Routine maintenance helps maintain efficiency and prevent unexpected issues.
Do you serve other areas besides Seabrook?
Yes. In addition to Seabrook, we provide tankless water heater installation services in nearby communities such as Hampton Falls, Rye, and Kensington. Visit our areas we serve page for the full list.
We have 3 locations across Massachusetts
Our Wakefield, MA Location
78 Foundry St, Wakefield, MA 01880
Our North Andover, MA Location
3 Johnson St, North Andover, MA 01845
Our Chelmsford, MA Location
80 Brick Kiln Rd, Chelmsford, MA 01824
One of our locations is right on Chelmsford and here to assist you with your plumbing needs!

