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Leak Detection
Mystery moisture near your heater? We trace the exact source — leak, condensation, or plumbing — before any work.
Learn More →Tankless water heaters are efficient and compact — but they're also the units most vulnerable to New England winter damage. Unlike a tank that holds 40+ gallons of warm water, a tankless unit has only a small amount of water inside its heat exchanger at any moment, which means a hard freeze can crack it far faster than most owners expect.
We service all major tankless brands in Medford, from units mounted in unheated garages to outdoor models that never should have been installed without freeze protection. Whether it's a cracked heat exchanger, a frozen condensate line, or a simple fitting leak, we'll diagnose it precisely and fix it right.
Tankless leaks rarely look like tank leaks. Watch for error codes on the display, water dripping from the vent or condensate line, dampness around the wall mount, or the unit short-cycling and shutting down. Internal leaks often show up first as performance problems — lukewarm water, ignition failures — before any water is visible.
This is the failure we see most every winter. A tankless unit in an unheated garage or on an exterior wall loses its freeze-protection the moment power is cut — and during an outage or a deep cold snap, the thin copper passages in the heat exchanger can split. Even indoor units suffer when installers skip the condensate freeze protection. We repair what's repairable and, just as importantly, add the protection that prevents a repeat.
Beyond freeze damage, the usual suspects are scale-clogged passages that overheat and stress joints, loose water connections that weep under thermal cycling, and condensate drains that back up or freeze shut. Annual descaling — especially with Massachusetts water — prevents most of these.
Don't wait — call us now at (833) 713-2101. We answer 24/7 across the Medford area.
📞 Call Emergency Line| Service | Typical Range |
|---|---|
| Tankless diagnosis & error-code readout | $89–$149 |
| Fitting / condensate line repair | $150–$350 |
| Heat exchanger / component repair | $200–$450 |
| Descaling service | $150–$300 |
Representative ranges for the Medford, MA area. Severe freeze damage to the heat exchanger may make replacement the smarter option — we'll show you both numbers.
Mystery moisture near your heater? We trace the exact source — leak, condensation, or plumbing — before any work.
Learn More →Burst or flooding water heater? Our 24/7 emergency crew stops the leak fast, day or night — including during cold snaps.
Learn More →Tank failed or past its prime? Same-day water heater replacement with haul-away, sized for New England winters.
Learn More →Sometimes — small, accessible cracks can be repaired, but heat exchangers are precision parts and severe freeze damage usually means replacing the exchanger or the unit. We'll assess honestly and price both paths.
Many tankless error codes (ignition failure, overheating, flow errors) are the unit protecting itself from an internal leak or blockage. The leak may be inside the cabinet where you can't see it.
Once a year for most Medford-area homes. Scale buildup is the slow killer of tankless units — it chokes flow, overheats the exchanger, and stresses every joint.
Yes, when installed correctly: indoors or with proper freeze protection, correct venting, and a condensate drain that can't freeze. Many winter failures we see trace back to shortcuts in the original installation.
Available in Medford and nearby communities, including:
Don't let a small leak turn into major water damage. Call now for fast, upfront-priced water heater leak repair anywhere in the Medford area.
📞 Call (833) 713-2101