The work · Repair
Water Heater Repair in Southern NH
No hot water? Leaking water heater? Strange noises coming from your basement? We diagnose and fix water heater problems fast, often the same day you call. Honest pricing, expert service, no surprises.
Call anytime — emergencies get answered, day or night.
(603) 440-8113 A real person answers · Not a call treeCommon Water Heater Problems We Fix
We've seen it all in 25+ years. These are the most common issues homeowners in southern NH call us about, and we can usually fix them the same day.
No Hot Water: The most common emergency call we get. Could be a failed thermocouple, bad gas valve, tripped breaker, or a more serious issue. We diagnose and fix the root cause.
Not Enough Hot Water: Running out of hot water during showers? Could be a failing heating element, sediment buildup, a broken dip tube, or an undersized unit. We'll find the problem.
Strange Noises: Popping, rumbling, or banging sounds usually mean sediment has built up at the bottom of the tank. This can reduce efficiency and shorten the unit's lifespan.
Water Leaking: Leaks from the tank, fittings, or pressure relief valve need immediate attention to prevent water damage. Some leaks are repairable; others mean it's time to replace.
Rusty or Discolored Water: Brown or rusty hot water often indicates a corroded anode rod or a deteriorating tank interior. If caught early, replacing the anode rod can solve the problem.
Pilot Light Won't Stay Lit: A pilot light that keeps going out typically means a faulty thermocouple or a dirty pilot assembly. This is a safety concern that should be addressed promptly.
High Energy Bills: If your water heating costs have spiked, your unit may be losing efficiency due to sediment buildup, a failing thermostat, or age-related deterioration.
When to Repair vs. Replace Your Water Heater
We'll always give you our honest recommendation. Here's the decision framework we use.
Repair Makes Sense When: Your water heater is less than 8 years old; The repair cost is less than 50% of a new unit; This is the first time the unit has needed repair; The issue is a component (thermocouple, element, valve) not the tank.
Replace Makes Sense When: Your water heater is over 10-12 years old; The repair would cost more than 50% of a new unit; It's needed multiple repairs in the past 2 years; The tank itself is leaking (corrosion is irreversible).
Same-Day Water Heater Repair in Nashua & Merrimack
The shop is in Merrimack, which puts most of Nashua within 15 minutes — close enough that a morning call is usually an afternoon fix. From the Tree Streets and French Hill to South Nashua, we repair every configuration the city's housing stock throws at us: original tanks in mill-era multi-families, tight condo closets, and gas tankless units in the newer neighborhoods off the Daniel Webster Highway.
Same-day matters more for repair than anything else we do — no hot water is not a schedule-it-next-week problem. Call before noon and we can usually have hot water back tonight.
Sound like your basement? Call (603) 440-8113 — straight diagnosis, written quote, no pressure.
Fair questions
Repair questions, answered straight
How fast can you get to Nashua for a water heater repair?
About 15 minutes from our Merrimack shop to most Nashua addresses. Same-day repair is the norm, not the exception — and for emergencies we can typically be there within 1–3 hours of your call.
How quickly can you get here for a water heater emergency?
For emergencies like active leaks or complete loss of hot water, we offer same-day service throughout southern NH. In most cases, we can be at your home within a few hours of your call. Call us at (603) 440-8113 and let us know it's urgent.
How much does water heater repair cost?
Most water heater repairs range from $150 to $500, depending on the issue. Simple fixes like a thermocouple replacement are on the lower end, while heating element replacements or gas valve issues are higher. We always provide a clear diagnosis and upfront price before starting any work.
How do I know if my water heater needs repair or replacement?
As a general rule: if your water heater is under 8 years old and the repair costs less than 50% of a new unit, repair usually makes sense. If it's over 10-12 years old, needs frequent repairs, or is leaking from the tank itself, replacement is typically the smarter investment. We'll always give you an honest recommendation.
My water heater is leaking, is that an emergency?
It depends on where the leak is coming from. A leak from the temperature and pressure relief valve may be a simple fix. A leak from the tank itself usually means the tank has corroded through and replacement is needed. Either way, turn off the water supply to the heater and call us. We'll guide you through the immediate steps over the phone.
Can you repair tankless water heaters?
Yes. We service and repair all major tankless brands including Navien, Rinnai, Rheem, and others. Common tankless issues include error codes, ignition failures, scale buildup, and flow sensor problems. We carry common tankless parts and can usually complete repairs in one visit.
Do you charge a diagnostic fee?
We charge a modest diagnostic fee to come to your home and identify the problem. If you proceed with the repair, the diagnostic fee is applied to the cost of the repair, so you're only paying for it if you decide not to move forward. There are never any hidden charges.
The rest of the ledger
Other work the shop does
Tank at end of life? Right-sized replacement, installed to code, permit pulled — most days, same day.
TanklessEndless hot water off the wall — Navien and Rinnai units sized for New Hampshire winters.
Heat pumpTwo to three times cheaper to run, with the NHSaves rebate paperwork handled start to finish.
MaintenanceThe annual flush and anode check that adds years to a tank — cheap insurance against a cold Saturday.
Cold shower to hot water — one call.
(603) 440-8113You'll talk to the shop. Not a national installer program.
Emergencies · Answered day or night