Tankless Water Heater Repair Near You
Looking for tankless water heater repair near you? Our technicians cover 172 cities, and each visit follows one path: diagnose, explain, get your approval on the price, then repair.
- Fault log checked first
- You approve the price before work
- Gas and electric models
Diagnosis before parts
We confirm what failed by testing it, so you never pay for a guess or a part that wasn't needed.
You approve the cost
The repair and its price are spelled out on paper, and work begins only after you say yes.
Technicians near you
The person at your door works your area and repairs on-demand heaters week in, week out.
Only tankless repair
No tank heaters, no remodels. Gas and electric on-demand units are the whole job.
One Method for Every Tankless Repair
Tankless water heater repair near you follows one routine whatever the city: the controller's history comes first, then the gas or power supply, the water flow and the venting are measured, and only the component that tested bad is changed. Mineral buildup is flushed out instead of being left to cause the next fault.
- Fault log checked first
- You approve the price before work
- Gas and electric models
- Descaling through isolation valves
The Checks Built Into Each Repair
The same seven checks, in the same order, from the stored fault history to a hard test run once the fix is in.
Codes and fault log
We read the display and pull the heater's stored fault record before opening the cabinet.
Gas pressure while firing
Supply pressure is checked with hot water flowing, since a gas line can look healthy when idle and drop once the burner lights.
Flow rate and inlet screen
The cold-side inlet screen is cleaned and flow is measured. Below its minimum flow rate, the burner simply won't light.
Igniter and flame rod
The igniter, flame rod and burner get inspected. A sooted rod is cleaned; one that tests bad is replaced.
Vent and condensate line
Intake and exhaust caps are checked for obstructions, and the condensate drain for blockage or corrosion.
Sensors and control board
Thermistors, the flow sensor and the board are tested against the manufacturer's specifications.
Repair, then verify
Once the fix is in, we run several fixtures together and confirm the outlet temperature stays put.
From Your Call to a Hot Shower
- 1
Phone
Share the make, the code and the symptom. You hear what's most likely wrong and roughly what it costs.
- 2
Diagnose
Fault log pulled, gas pressure tested, then flow, venting and sensors worked through in sequence.
- 3
Approve
You see the failed component and its price on paper and decide whether to go ahead.
- 4
Repair & verify
The fix goes in, and the heater is tested with several taps open before we head out.
The Repairs We Do Most
Burner won't light
Dirty flame rods and weak igniters are cleaned or swapped, and the gas pressure is read while the burner fires.
Heat cuts in and out
A flow sensor that loses the signal mid-shower is tested, replaced if it reads wrong, and checked again.
Scale in the exchanger
A pump circulates descaler through the service valves; valves are fitted first if the unit has none.
Problems That Bring People to Us
Temperature swings in the shower
A few seconds of cool water when a tap reopens is how these heaters start up. Swings mid-shower suggest low flow, scale or a weak flow sensor.
Cuts out partway through a shower
Flow has fallen under the firing minimum, usually from a plugged screen, aerator or shower valve cartridge, or a sensor reading low.
Water isn't as hot anymore
Mineral scale in the exchanger, a gas supply that sags, or a temperature sensor giving a false reading.
Only one faucet runs cold
Typically a worn mixing cartridge or a crossover at that fixture, rather than the heater itself.
Rinnai showing LC
That's the scale warning. The exchanger is due for a descale, and it shouldn't wait long.
Nothing on the display
The outlet has lost power, a fuse has blown, or the control board has failed.
Tankless Repair Price Ranges
Most tankless water heater repair near you comes to an estimated $150 to $800, depending on which part failed. A descale runs an estimated $150 to $350, and a new heat exchanger an estimated $1,000 to $2,500. You approve a written price before work begins.
Diagnostic visit
- Fault codes and log reviewed
- Burner gas pressure tested while firing
- Inlet screen, flow rate and vent inspected
- Clear explanation of what broke
Component repair & descale
- Igniter, flame sensor or thermistor changed
- Flow sensor diagnosed and replaced
- Exchanger flushed with descaling solution
- Every hot tap tested after the fix
Exchanger & major components
- Cracked or leaking exchanger swapped
- Maker's parts warranty checked first
- Gas valve or control board changed
- Combustion and temperature verified
These are estimated ranges for ordinary jobs. Your own price goes on paper after the fault is found.
What You Can Expect From Us
Codes point, tests decide
A code tells us which system is complaining, not which part. Sensors, venting, flow and gas are all checked before anything is swapped.
No paying for good parts
A flame rod or flow sensor is measured against spec first, so you never pay to replace something that still works.
Scale handled at the source
When minerals caused the fault, the exchanger gets flushed as well, so the code doesn't reappear a few weeks later.
Price approved up front
Whether it's a screen or an exchanger, the diagnosis and the cost are on paper before work begins.
Four Rules on Every Job
Measure before swapping
Suspect components are checked against the manufacturer's specs; nothing is replaced on instinct.
Approved on paper
You see the diagnosis and the price in writing and sign off before repair work begins.
Careful with gas
Gas and electricity are isolated before work starts, and any gas connection we disturb gets a leak test afterward.
Tested at real demand
We open several fixtures at once and watch the outlet temperature hold steady before calling it finished.
Need Tankless Water Heater Repair Near You? Call Now
Cold showers won't sort themselves out. Most heaters are back to normal after one visit and one part.
Tankless Water Heater Repair Near You: FAQs
Still unsure?
Phone us and describe what the unit is doing. A tankless tech can usually narrow it down while you are on the line.
Call (888) 987-0567Where is tankless water heater repair near you available?
Tankless water heater repair near you is offered in 172 cities across 27 states, and more are added every week. Open your state below, or call (888) 987-0567 and we'll confirm your address on the call.
Can a broken tankless water heater be fixed?
Usually, yes. Flow sensors, igniters, thermistors, flame rods, blowers, gas valves and control boards can all be swapped, and mineral scale can be flushed out. The main exception is an older unit whose heat exchanger leaks.
Why does my tankless heater alternate between hot and cold?
A short burst of cool water right after you reopen a tap is the heater relighting. If the temperature swings while the water keeps running, suspect flow under the minimum the heater needs, scale in the exchanger or a weak flow sensor.
How often does a tankless water heater need flushing?
Most manufacturers recommend once a year, or every six months where the water is very hard. Soft-water homes can go longer, but years without a flush lead to scale faults.
Do tankless water heaters have a reset button?
Most reset by cycling the power or through the control panel. Resetting clears the code but not the underlying problem; ignition or exhaust codes that return call for a repair visit.
What usually goes wrong with tankless water heaters?
Scale in the heat exchanger tops the list, then ignition faults, then flow sensor and inlet screen problems. Each usually announces itself with an error code or with water that runs hot and then fades.
Pick Your State
Each state page lists every city we cover there, with its ZIP codes.
Also see: How it works · Questions
Get Your Tankless Looked At
Call (888) 987-0567 with your heater's make and code, and you'll get the likely problem and an estimated range on that first call.
Speak With a Tankless Tech
Have these ready
- The make and model on the rating label
- Whatever code the screen shows
- What the hot water is doing, and since when