Water Heater Services in Dover, NH

Name: Service Experts Somersworth
Address: 30 Centre Road, Suite 4, Somersworth, NH, 03878
Telephone: (603) 633-5954

ACE-Certified Water Heater Repair, Replacement & Installation

Service Experts Somersworth provides tank, tankless, and hybrid water heater services to homeowners in Dover, New Hampshire and throughout Strafford County. Our technicians are ACE-certified, licensed, bonded, and insured, and every installation is backed by the Service Experts Guarantee.

Whether your water heater needs a quick repair or a full replacement, our team is ready around the clock. Call (603) 633-5954 or schedule online to get started.

Honest Answers on Repair or Replacement

Not every water heater problem calls for a new unit, and not every repair is worth the cost. Our technicians assess your system, explain the options, and recommend the right course of action for your home. With 24/7 scheduling available, you don’t have to wait through a cold morning to get answers.

We work on traditional tank models, tankless units, and hybrid units. Whatever system is running in your home, we can diagnose the problem, repair it when that’s the practical choice, or handle a complete installation when it’s time for something new.

Guarantees, Maintenance & Financing

A new water heater is a real investment, and we back it with the Service Experts Guarantee. If newly installed equipment doesn’t perform to manufacturer specifications in the first year, we make up to three repair attempts at no additional cost.

Maintenance+ Membership
Annual maintenance through our Maintenance+ Membership helps prevent unexpected breakdowns and extends your water heater’s lifespan. Members also receive a discount on the purchase or lease of a new hot water heater.

Advantage Program
If upfront costs are a concern, the Service Experts Advantage Program offers a lease option with no money down. It covers installation, preventative maintenance, and repairs so you’re not caught off guard by future service costs.

Serving Dover & Strafford County for Nearly 50 Years

Our team has been working in homes across Strafford County for nearly 50 years. The area’s housing stock spans colonial-era construction to newer builds, and that range shapes how we approach sizing and replacement decisions. We serve Dover as part of a wider coverage area that includes Rochester, Somersworth, and nearby New Hampshire communities.

Schedule Your Water Heater Service Today

Done guessing what’s wrong with your water heater? Our ACE-certified technicians can diagnose, repair, or replace your system on your schedule. Call (603) 633-5954 or book online to schedule your water heater service with Service Experts Somersworth.

Tank, Tankless & Hybrid Water Heaters: What’s the Difference?

Understanding how each system works makes it easier to weigh your options when it’s time to repair or replace.

Traditional Tank Models
A tank water heater stores a set volume of water in an insulated tank and keeps it heated continuously. These units are common in Strafford County homes and tend to have lower upfront costs, though they consume energy by maintaining water temperature around the clock.

Tankless Units
A tankless water heater heats water on demand as it flows through the unit rather than holding a standing supply, which can suit homes where space or standby energy use is a concern.

Hybrid Units
A hybrid heat pump water heater draws ambient heat from the surrounding air to warm water. Compared to a standard electric tank model, hybrid units typically use less energy, making them worth considering during a replacement conversation.

Warning Signs Your Water Heater Needs Attention

Some problems are easy to spot. Others build gradually until you’re dealing with cold showers or a puddle on the utility room floor. Here are the signs worth taking seriously:

No hot water or consistently low temperatures despite thermostat adjustments often point to a failing heating element or thermostat.
Rusty, discolored, or metallic-tasting hot water can indicate internal tank corrosion.
Rumbling, popping, or banging sounds from the tank frequently signal sediment buildup that’s reducing efficiency.
Frequent repairs on an aging unit can make replacement the more cost-effective path over continued service calls.
Visible leaks or moisture pooling around the base of the unit call for prompt professional evaluation.

If any of these sound familiar, it’s worth a call. Our technicians can assess the situation and give you a clear recommendation, not a guess.

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No Payments Until 2027
With any new HVAC, Indoor Air Quality, Water Heater or Water Treatment Service Experts Advantage Program lease agreement, we will make your payments for the first 6 months.
Valid on new Advantage Program lease agreements from 7/1/26 to 9/30/26. Customer owes $0 for the first six months; regular monthly lease payments begin thereafter. Early termination during promotional period will result in charges for elapsed months. See your full Advantage Program Lease Agreement for complete terms and conditions, including total lease costs and payment schedule. Jul 1, 2026 - Sep 30, 2026
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Member exclusive: $250 off Water Heater Install
Maintenance+ members exclusive discount with the purchase or lease of a new hot water heater
Offer available for active Maintenance+ customers. Purchase or lease a new hot water system from 8/19/26 - 9/30/26 and receive $250 off installation price. System must be installed by 10/3/26. Aug 19, 2026 - Sep 30, 2026
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Limited
Time
Offer!
Get Hot Water Today — Or Get $500 Off
Book by 3pm for guaranteed same-day installation. No Hot Water? Let’s Get You Back on Track. Book your water heater service by 3pm EST for a guaranteed same-day installation or enjoy $500 off standard installation. Don’t wait for another cold shower. Call center line or book online and let our local experts take care of the rest.
Offer valid thru 10/15/2026. Offer(s) not valid on prior purchases and cannot be combined with any other offers. Some restrictions apply. Offer valid on select residential services only. Additional charges may apply for after-hours, specialty equipment, or non-standard installations. Installation timing subject to operational, permitting, weather, and safety. © 2026 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC. All Rights Reserved. Apr 22, 2026 - Oct 15, 2026
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NEW HVAC SYSTEM as low as $155/month
NO money down; Brand new, high-efficiency equipment; installation, regular preventative maintenance, all repairs (parts & labor), and air filters INCLUDED.
Offer not valid on prior purchases and may not be combined with other offers. Advantage pricing applies to specific equipment. Call for details. Some exclusions apply. See the terms and conditions within the Service Experts Advantage Program Lease Agreement for additional information.
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$99 Drain Cleaning
Regularly $235. Reduce buildup on your pipes, Help avoid major plumbing repairs, Maintain a clean home.
Offer not valid on prior purchases and may not be combined with other offers. Valid for one drain only. Accessible ground level clean. Call for more details.
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10% Off Any Product or Service for Active Duty, Retired, and Veteran Military Personnel
It’s our way of thanking you for your courage, dedication, and sacrifice to protect our freedom. All work is performed by licensed experts and backed by our Service Experts Guarantee.
Offer not valid on prior purchases and may not be combined with other offers.
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Members exclusive: 15% off services and repairs
As a Maintenance+ member, you automatically receive discounts on all services and repairs.
See your signed Maintenance+ Membership agreement for full terms and conditions.
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Earn $600 in rebates with a qualifying Lennox HVAC system
System rebate requires the purchase or lease of a Lennox indoor/outdoor unit. System add-ons do not qualify for an induvial rebate. Rebate offer valid from 8/17/26 to 9/13/26 and must be installed by 9/20/26 and submit claims by 10/20/26. Rebate is paid in the form of a Lennox prepaid Mastercard ®.
Lennox Cool Down Event offers a $600 Lennox-funded consumer rebate on qualifying Dave Lennox Signature®, Elite®, and Merit® systems. All rebate information found at https://www.lennox.com/residential/buyers-guide/offers-and-savings/promotions/. Equipment and rebate offers vary by Service Experts location, call your local Center for more details. Aug 21, 2026 - Sep 13, 2026
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Limited
Time
Offer!
$0 Diagnostic Fee
Waived fee for all HVAC, Plumbing, Electrical and Water service calls.
Promotion valid for service visits occurring 8/20/26 - 9/18/26. Cannot be combined with other offers outside of membership discounts. No cash value. Offer may be modified, suspended, or withdrawn at any time as permitted by law. Aug 20, 2026 - Sep 18, 2026
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