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If you’re searching for Chelmsford MA tankless water heater installation, you’re likely looking for better efficiency, more hot water, or a space-saving upgrade.
Tankless systems heat water on demand. That means no storage tank and no running out of hot water halfway through a shower.
At 128 Plumbing, Heating, Cooling & Electric, we install tankless water heaters in Chelmsford and surrounding towns. We’ve been serving Massachusetts homeowners since 1992, with our headquarters right here in Chelmsford.
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Here is a quick list of the top heating services we offer:
What Is a Tankless Water Heater?
A tankless water heater heats water only when you turn on a tap. Instead of storing 40–80 gallons of hot water, it uses powerful heating elements or gas burners to warm water instantly as it flows through the unit.
Benefits include:
- Continuous hot water
- Lower standby energy loss
- Smaller footprint
- Longer system lifespan (often 15–20 years)
According to the U.S. Department of Energy, homes that use 41 gallons or less of hot water daily can be 24%–34% more energy efficient with tankless systems compared to traditional tanks.
Is Tankless Right for Your Chelmsford Home?
Tankless systems work well for many households, but proper sizing is critical.
Tankless may be a good fit if:
- You frequently run out of hot water
- You want higher energy efficiency
- You’re remodeling or upgrading
- You want to free up basement space
- Your current water heater is failing
However, some homes may require gas line upgrades, venting adjustments, or electrical capacity improvements. We evaluate your home before recommending installation.
Our Tankless Water Heater Installation Process
When you schedule tankless water heater installation in Chelmsford, here’s what we do:
- Evaluate your home’s hot water demand
- Assess gas, electric, and venting requirements
- Recommend properly sized equipment
- Provide upfront pricing
- Remove your old water heater (if applicable)
- Install and test the new system
- Ensure full compliance with Massachusetts code
Our goal is safe, efficient installation done correctly the first time.
Serving Chelmsford and Nearby Towns
We proudly provide water heater repair in:
- Chelmsford
- Westford
- Billerica
- Lowell
- Surrounding Middlesex County communities
If you’re unsure whether you’re within our service area, call and we’ll confirm.
Schedule Tankless Water Heater Installation in Chelmsford, MA
If you need Chelmsford Ma tankless water heater installation, call 128 Plumbing, Heating, Cooling & Electric today.
We’ll evaluate your home, explain your options clearly, and install a properly sized tankless system built for long-term performance.
Call now or book online for professional tankless water heater installation in Chelmsford, Massachusetts.
Why Choose 128 for your Tankless Water Heater Installation in Chelmsford, MA?
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!
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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
How long does tankless water heater installation take?
Most installations can be completed in one day. However, if gas line or venting upgrades are required, it may take longer.
Does a tankless water heater really provide endless hot water?
Yes, as long as the system is properly sized. It heats water on demand rather than storing it in a tank.
Are tankless water heaters more expensive?
Tankless systems typically cost more upfront than traditional tanks. However, they often last longer and may reduce energy use over time.
Do tankless systems require maintenance?
Yes. Annual maintenance is recommended, especially in Massachusetts where mineral buildup can occur. Regular flushing helps extend system life.
Can I replace my tank water heater with a tankless unit?
In many cases, yes. We evaluate gas supply, venting, and plumbing requirements before confirming compatibility.
How long does a tankless water heater last?
With proper maintenance, tankless systems often last 15–20 years, which is longer than most traditional tank units.
If you’re ready to upgrade to on-demand hot water, call for expert tankless water heater installation in Chelmsford, MA.
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
Being local means faster response times and technicians who understand Chelmsford homes, HVAC systems, and their demands.

