101 S Main St, Medford, NJ 08055 - Office Hours | Mon. – Fri. 8 a.m. to 4:30 p.m.
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609-654-8811
From Larchmont to the neighborhoods around Laurel Acres Park, Harriett’s Plumbing & Water Treatment provides expert tankless water heater installation, replacement, repair, and maintenance for homeowners throughout Mt. Laurel and the rest of Burlington County.
We install premium, high-efficiency gas tankless systems engineered for dependable hot water and lower energy costs, with every project tailored to your home’s plumbing and your household’s
daily habits.
A traditional tank water heater sits there heating and reheating a full tank of water all day, whether or not anyone’s home to use it. A tankless system only heats water the moment you need it, which cuts waste dramatically.
Mt. Laurel homeowners who make the switch tell us they appreciate:
Whether your household is running the shower, dishwasher, and washer at the same time on a busy morning, a correctly sized system is built to handle it.
Water conditions vary across Mt. Laurel, Marlton and its surrounding neighborhoods, and issues like hardness or sediment can shorten the life of a tankless unit if left unaddressed. Because Harriett’s also specializes in water treatment, we test water quality before every installation.
This includes checking for:
Handling these issues early prevents scale from building up inside the unit and helps your system run efficiently for longer.
There’s more to selecting a tankless water heater than brand reputation — sizing it to your home’s actual demand is what determines how well it performs.
Our technicians assess:
Matching equipment to real-world demand is how we keep performance strong and efficiency high year after year.
Many homeowners only think about replacing a water heater once it stops working — but replacing it ahead of failure typically prevents costly emergencies and water damage.
It’s worth considering replacement if you notice:
We’ll inspect your current system and give you a clear, honest read on whether repair or replacement makes more sense.
Many Mt. Laurel homeowners are surprised how manageable a tankless upgrade can be. Qualified customers may be eligible for:
We’ll walk you through what’s available and help you find a payment structure that works.
A qualifying high-efficiency tankless installation may make you eligible for manufacturer and utility rebates of up to $850, depending on the equipment you choose.
We’ll identify every rebate opportunity available before your installation begins.
| Service | Cost |
| Professional Tankless Water Heater Installation | Starting at $5,750 |
| Potential Rebates | Up to -$850 |
| Estimated Net Investment | Approximately $4,900 |
| 84-Month Financing | Starting around $58.33 per month* |
*Actual pricing depends on equipment selection, installation complexity, rebate availability, and financing approval.
Each project follows a consistent, code-compliant process:
Before we leave, we confirm the system is operating correctly and go over maintenance recommendations with you.
Maintenance visits typically include:
Homes with harder water often do best with annual service, while others can go two years between visits.
Our aim is a system that performs efficiently today and keeps your home in hot water for decades.
With routine maintenance, many premium units last twenty years or more.
Yes — every system is sized to match your home’s peak hot water demand.
Yes, we take care of permits and inspections whenever they’re required.
Yes — it keeps efficiency high and helps you avoid unnecessary repairs.
Several financing programs are available to help qualified homeowners afford the upgrade.
Ready for reliable hot water and a more efficient home? Contact Harriett’s Plumbing & Water Treatment to schedule your free estimate for tankless water heater installation or replacement in Mt. Laurel, NJ. We’ll evaluate your plumbing system, explain your rebate and financing options, and recommend the right high-efficiency unit for your family.