Tankless Water Heater Repair Near You
Need tankless water heater repair near you? We fix tankless units in 120 cities: codes read, parts tested, the faulty one replaced, and the price agreed in writing first.
- Error history read first
- Written quote before work
- Gas and electric units
Fault found first
The code, the stored history and each suspect part are tested before anything is ordered.
Price agreed in writing
Parts and labor go on a written quote, and nothing starts until you approve it.
Licensed local techs
Repairs by licensed technicians who work in your part of town.
Tankless units only
One specialty: gas and electric tankless heaters that stopped doing their job.
How Our Tankless Repairs Work
Tankless water heater repair near you works the same way in every city we cover: the display is read, gas, flow and venting are measured, and only the part that failed is replaced. Scale gets descaled rather than ignored.
- Error history read first
- Written quote before work
- Gas and electric units
- Descaling through service valves
What Every Repair Visit Includes
Seven checks in a fixed order, from reading the stored codes to running the unit hard after the fix.
Error history read
The code on the display and the unit's stored fault history are read before a single cover comes off.
Gas pressure under load
Inlet gas pressure is measured with hot water running, because a supply that looks fine at rest can sag once the burner fires.
Flow and inlet filter
The inlet filter screen is cleaned and the flow rate checked. Too little flow and a unit will not fire at all.
Ignition and flame
Igniter, flame rod and burner are inspected and tested. A dirty rod is cleaned; a dead one is replaced.
Venting and condensate
Intake and exhaust terminations are checked for blockage, and the condensate line for clogs and corrosion.
Sensors and board
The flow sensor, thermistors and control board are tested against the maker's published values.
Fixed, then run hard
After the repair, several taps run at once while the outlet temperature is watched, before the job is signed off.
From First Call to Hot Water
- 1
Call
Give us the brand, the code and what the water is doing. You hear the likely cause and a cost range.
- 2
Test
History read, gas pressure measured, flow, venting and sensors checked in order.
- 3
Agree
The failed part and the price go on a written quote for you to approve.
- 4
Fix & run
The repair is made and the unit is run at full demand before we leave.
Repairs We Make Most Often
Ignition parts replaced
Igniters and flame rods cleaned or replaced, with gas pressure checked under load.
Flow sensor replaced
A sensor that switches the burner on and off mid-shower swapped and tested.
Heat exchanger descaled
Scale dissolved out through the service valves, which get added if missing.
What Homeowners Call Us About
Hot, then cold, then hot
A short cold burst after the tap reopens is normal start-up. Swings during one shower point to low flow, scale or a failing flow sensor.
Shuts off mid-shower
Flow drops below what the unit needs to keep firing: a clogged filter, aerator or shower cartridge, or a sensor misreading.
Not as hot as it used to be
Scale on the heat exchanger, a weak gas supply or a thermistor reading wrong.
Cold at one tap only
Usually a mixing valve or a cold-water crossover at that fixture, not the heater.
LC code on a Rinnai
The unit is reporting scale buildup. It needs a descale, and soon.
Display is blank
No power at the outlet, a blown fuse or a failed control board.
Estimated Tankless Repair Costs
Most tankless water heater repair near you is estimated at $150 to $800, depending on the part. Descaling is estimated at $150 to $350, and a heat exchanger at $1,000 to $2,500. Nothing starts until you approve a written quote.
Diagnosis & code check
- Stored error history read
- Gas pressure measured under load
- Flow, filter and venting checked
- A plain answer on what failed
Repairs & descaling
- Igniter, flame rod or sensor replaced
- Flow sensor or thermistor swapped
- Heat exchanger descaled
- Unit run at full demand afterwards
Heat exchanger & major parts
- Leaking heat exchanger replaced
- Warranty part claimed where it applies
- Control board or gas valve replaced
- Combustion checked after the swap
Ranges are estimates for typical jobs. The actual price is written down once the fault is found.
Why Homeowners Call Us First
The code is a starting point
Error codes name a system, not a part. Gas, flow, venting and sensors are measured before anything is replaced.
Parts tested before they're bought
A flow sensor or flame rod gets checked against the maker's values, so you don't pay for a part that wasn't broken.
Scale treated, not ignored
If scale caused the fault, the exchanger is descaled as well, so the same code doesn't return next month.
Quote in writing
The cause and the price are written down before work starts, whether the job is a filter or an exchanger.
Four Things Every Visit Includes
Test, then replace
No part is swapped on a hunch; each suspect is measured against the maker's values.
Price on paper
The cause and the cost are written down and approved before the cover comes off for work.
Gas handled safely
Gas and power are shut off properly, and every gas joint touched is leak-tested.
Proved under load
Several taps run at once while outlet temperature is watched before anyone signs off.
Need Tankless Water Heater Repair Near You? Call Now
Cold showers rarely fix themselves. Most units are back to full heat after one part and one visit.
Tankless Water Heater Repair Near You: FAQs
Question not covered here?
Call and ask. Someone who repairs tankless units answers, and the phone quote is free.
Call (380) 273-8196Where can I get tankless water heater repair near you?
Tankless water heater repair near you is available in 120 cities across 25 states. Find your city below, or call (380) 273-8196 and we'll check your address while you are on the line.
Can a tankless water heater be repaired?
Yes, in most cases. Igniters, flame rods, flow sensors, thermistors, fans, gas valves and boards are all replaceable, and scale can be descaled. A leaking heat exchanger on an old unit is the main exception.
Why does my tankless water heater go hot then cold?
A brief cold slug after a tap reopens is the unit restarting. Swings during one shower usually mean flow below the unit's minimum, scale on the exchanger, or a failing flow sensor.
How often should a tankless water heater be flushed?
Most makers call for a flush every year, and every six months on very hard water. On very soft water the gap can be longer, but skipping it for years invites scale faults.
Is there a reset button on a tankless water heater?
Most units reset by switching power off and on, or through the controller. A reset clears the code, not the cause; ignition and exhaust codes that return need a repair visit.
What is the most common problem with tankless water heaters?
Scale in the heat exchanger, followed by ignition faults and flow sensor or filter problems. All three usually show up as a code or as water that won't stay hot.
Find Your City
Pick a city to see its ZIP codes and local notes.
California
AntelopeApple ValleyBell GardensCampbellColtonCypressDiamond BarEl CerritoHacienda HeightsHawthorneHemetHesperiaInglewoodLa MiradaLa PuenteLaguna HillsLincolnLoma LindaMenifeeMontclairNorcoParamountPerrisPico RiveraPleasant HillRosemeadRowland HeightsSan LeandroSan PabloSan RafaelSeasideStantonVisaliaWildomarMassachusetts
ArlingtonAttleboroBurlingtonChelseaDanversDracutEverettMedfordMelroseMethuenMiltonNatickNew BedfordNorwoodRevereSalemSaugusSomervilleFlorida
Bonita SpringsBradentonEsteroFleming IslandFort PierceKey WestLand O' LakesLeesburgLehigh AcresPensacolaRiverviewSebastianSpring HillTarpon SpringsValricoColorado
BrightonIndiana
MarionKentucky
NicholasvilleMichigan
AllendaleMissouri
GrandviewNevada
PahrumpOklahoma
EdmondSouth Carolina
SpartanburgUtah
West Valley CityRelated: Our process · FAQs
Book a Repair Visit Today
Ring (380) 273-8196 with the brand and the code, and you will hear the probable fault and a price range before you hang up.
Talk to a Tankless Technician
Handy to have when you call
- The brand and model from the label
- Any code on the display
- When the problem started, and what the water does