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Water heater being installed

Heritage Home Service is the expert you need to install your new water heater. Since 1986, our team has served the New Hampshire area with water heater maintenance, repair, and installation services.

Our goal is to empower and educate our customers on the best home solution. We’ll always provide honest, transparent pricing and recommendations based on what’s best for your home’s future. You can count on us for all your water heater needs.

JUST CALL HERITAGE (603) 354-0092

FAQs

  • Water Heater Installation Services in NH

    New Hampshire Water Heater Services

    If you’re on the hunt for a new water heater, there are various options depending on what you’re looking for and how you use hot water in your home. When you work with Heritage, we’ll discuss how you currently use hot water and what you’re looking to get out of the new water heater. By working together to come up with the best option, we can make sure you find the right type of water heater to meet your energy needs and fit your budget, with upfront pricing and financing options.

  • Types of Water Heaters to Consider

    There are two main categories of water heaters: tank and tankless. A tank-based water heater uses a tank to store hot water all the time, whereas a tankless water heater heats hot water on-demand as you need it. For some, a tankless water heater is more than enough for their hot water needs, but for others, especially large families, a tank-based water heater is the way to go.

    Most homeowners choose to replace what they already have or go with a newer, more modern water heater. If you use electric, you’ll tend to stay with electric or go with an electric-hybrid. If you are currently using a gas water heater, you’d stay with a gas water heater. Heritage will consider the fuel source, how old your home is, and where your tank is located to give you all the options for your home’s new water heater.

    One of the final decisions you’ll make when choosing a new water heater is the size. Most homes use a 20 to an 80-gallon water tank, with the most common size being a 40-gallon tank.

Heritage Home Service is Your Water Heater Solution

When choosing a water heater for your home, we’ll work with you from start to finish to understand your needs and help you make the right choice for a new unit. We’ll explain how the unit works, what the installation process looks like, offer transparent pricing, and schedule a time and date that works for your schedule. Call today to schedule a water heater installation with your friends at Heritage.

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Financing Made Easy

When you choose Heritage, you can rest easy knowing that we provide straightforward options to help you budget for a complete solution that will last you for decades to come.

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Home Advantage Membership

With Home Advantage Membership, enjoy peace of mind knowing your home’s plumbing, heating, cooling, and electrical needs are handled year after year—hassle-free, with added benefits.

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FREE

Generator Estimates

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See associates for details, restrictions, timing and website for licensure. Selection varies by location. While supplies last. See associate for details. Special price is per system. Offers expire on 12/31/26
*valid in New Hampshire/Maine.

$99

Drain Clearing w/ Free Camera Drain Inspection

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See associates for details, restrictions, timing and website for licensure. Selection varies by location. While supplies last. See associate for details. Special price is per system. Offers expire on 12/31/26
*valid in New Hampshire/Maine.

$49

Comprehensive Smoke Alarm Assessment

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See associates for details, restrictions, timing and website for licensure. Selection varies by location. While supplies last. See associate for details. Special price is per system. Offers expire on 12/31/26
*valid in New Hampshire/Maine.

$149

Furnace/Boiler Tune-Up

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See associates for details, restrictions, timing and website for licensure. Selection varies by location. While supplies last. See associate for details. Special price is per system. Offers expire on 12/31/26
*valid in Massachusetts only.
*does not include oil or steam systems

$50 Off

Smoke & CO Detector Installation + Free Home Safety Evaluation

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See associates for details, restrictions, timing and website for licensure. Selection varies by location. While supplies last. See associate for details. Special price is per system. Offers expire on 12/31/26
*valid in Massachusetts only.

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What Our Customers Are Saying

Always professional, Chris was able to identify anything and make sure the system was running at peak during this maintenance. Also, our membership agreement with Heritage covered everything. Got to love that! Thanks, Chris.

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Caroline Boyd

Caroline Boyd

November 14, 2026

Great communication, punctual. Kyle was very knowledgeable and repaired our HVAC issue in the economical way possible. I was so impressed with Kyle and the rest of the Heritage team that I signed up for their very affordable annual Heritage Membership. You have another loyal customer!

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Chris Pixley

Chris Pixley

November 14, 2026

Marcus was very knowledgeable, nice, and easy to understand. He did a great job explaining the different options for replacing our water heater and made the whole process clear and straightforward.

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Marianne DeCarli

Marianne DeCarli

November 13, 2026

I had my mini-splits serviced by Zach yesterday, and he did an exceptional job. After 6 years they needed to be deep cleaned, and Zach explained the process to me and shared photos. His work was clean and neat and thorough. He made notes to share for the next time I need service. I hope Zach will be available next year for that because I’ll definitely be calling Heritage of North Hampton again! And a shout out to Robin who does the scheduling. She was so pleasant and easy to work with as well. All around a great experience! Thank you!

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Bernadette Kenny

Bernadette Kenny

November 13, 2026

Alex was very professional, knowledgeable and friendly. Excellent service! If your your looking for top notch and quality service, I highly recommend him!

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Patti Bartlett

Patti Bartlett

November 12, 2026

Ryan is great—second time he’s worked on my system, and I plan to request him for any future work. He’s the god of furnaces!

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Larry Canale

Larry Canale

November 12, 2026

Heritage was quick to respond, came out the next day. Micheal the technician/plummer did a great job replacing the Rannai tankless hot water unit.

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John Mortarelli

John Mortarelli

November 12, 2026

Technician Dennis showed up on time, was prepared with the right part and got to work immediately. He was clear and professional and showed me a picture of the newly installed part. I have confidence in Dennis’s burner knowledge and would recommend him to any home owner.

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Mary Mccarthy

Mary Mccarthy

November 12, 2026

On time, easy to work with and talk to. Communication was clear and the work was done well and quickly! Would recommend!

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Jen Andon

Jen Andon

November 12, 2026

The tech was on time and got the job done for the quoted price. We use Heritage for all our service and they are always neat and polite. You can’t ask for more

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michael feniger

michael feniger

November 12, 2026

Frequently Asked Questions

  • How do I know when it is time to replace my water heater?

    Most traditional tank water heaters last 8 to 12 years. Signs that replacement is needed include rusty or discolored hot water, rumbling or banging noises from the tank, visible leaks or corrosion around the base, inconsistent water temperatures, and rising energy bills. Heritage can inspect your water heater and recommend whether repair or replacement is the better option.

  • What types of water heaters does Heritage install?

    Heritage installs traditional tank water heaters, tankless water heaters, and hybrid heat pump water heaters in both gas and electric configurations. Our licensed plumbers will evaluate your household hot water demand, available space, and energy preferences to recommend the best option for your home.

  • How long does a water heater installation take?

    A standard water heater replacement typically takes a few hours to complete. If the installation requires changes to your plumbing, gas line, venting, or electrical connections, the job may take longer. Heritage provides a clear timeline during your estimate so you know what to expect.

  • Does Heritage offer financing for water heater installation?

    Yes. Heritage offers financing options to help New Hampshire homeowners manage the cost of a new water heater installation. We provide upfront pricing with no hidden fees so you can make an informed decision before work begins.

  • Should I choose a gas or electric water heater for my New Hampshire home?

    The right choice depends on your home’s existing infrastructure, energy costs, and hot water demand. Gas water heaters typically heat water faster and cost less to operate, while electric models are easier to install and do not require venting. Heritage can help you weigh the pros and cons based on your specific situation.

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Whether you need routine maintenance, repair, or new installation – we have you covered. 

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