
Tankless Water Heater Repair in Novi, MI
Tankless water heater repair in Novi, MI that starts with the display, not a guess. Most faults turn out to be one part or a scaled exchanger, and you see the price in writing first.
- Gas and electric units
- Descaling through service valves
- Run at full demand before we go
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.

Tankless Units in Novi Homes
Most Novi homes keep the tankless in the basement, beside the furnace. Hard water and cold winters are what wear these units down.
What we run into in Novi
- Basement units. Basement installs are common, often condensing units whose acidic condensate runs to a floor drain or a small pump.
- Freeze damage. Freeze protection keeps the inside of a unit safe, not the exposed pipes under it. Uninsulated lines are where winter damage usually starts.
- Hard water. The water here carries a lot of minerals, and they settle as scale inside the heat exchanger. LC codes, overheat faults and water that will not get hot often trace back to it.
From one side of Novi to the other (48374, 48375, 48376, 48377), plus nearby parts of Oakland County.
Call (380) 273-8196Tankless Problems We Fix Around Novi
The list below covers what we find on most visits for tankless water heater repair in Novi, MI, from ignition codes to drips under the cabinet.

Code 11, E003 or 111
No ignition usually means gas pressure, a worn igniter, a dirty flame rod or a blocked vent. Each is tested.

Water under the unit
Water below a tankless can be a valve, a fitting, condensate or a failed exchanger. The source decides the cost.

Venting fault
Venting codes mean the unit can't breathe: a blocked termination, a nest, snow or a vent run that's too long.
Noisy or whistling
Scale, a struggling fan or a gas regulator issue, each of which shows up on testing.
Error code keeps coming back
A reset only clears the symptom. Repeated ignition or exhaust codes need a visit.
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.
Can't tell which one you have? Read us the display and describe the water, and the likely fault comes back on the call.

Fix It or Retire It? Deciding in Novi
Gas tankless units commonly last 20 years or more with flushing, so a single failed part rarely means a new heater. A failed exchanger outside its warranty, on a unit past 15 years, is where replacement starts to win.
Not sure which side of the line you are on? Call (380) 273-8196 with the brand, the age on the label and the code. You will hear whether a repair makes sense before anyone comes out.
Call (380) 273-8196Estimated Repair Costs in Novi
Expect an estimated $150 to $800 for tankless water heater repair in Novi, MI when a sensor, igniter, flame rod or descale is the fix. Exchanger jobs run higher, estimated at $1,000 to $2,500.
Diagnosis & code check
- Flow, filter and venting checked
- Vent terminations looked over
- A plain answer on what failed
Repairs & descaling
- Inlet filter screen cleaned
- Unit run at full demand afterwards
- Flow sensor or thermistor swapped
Heat exchanger & major parts
- Leaking heat exchanger replaced
- Honest word if a new unit is the better spend
- Fan motor or blower replaced
Need Tankless Water Heater Repair in Novi, MI? Call Now
Scale and ignition faults get worse with every cycle. Get it looked at while it is still simple.
Novi Homes by the Numbers
Gas heats about 89% of homes in Novi, so gas tankless units, with their vent runs and gas-line sizing, are the usual case on a call. With a median build year of 1992, homes in Novi sit in the middle: plenty were retrofitted with tankless units, and plenty of those units are now old enough to need parts. Owners live in about 68% of Novi homes (single-family about 63%), so the person who calls is usually the person who decides.
With about 66,224 residents on roughly 30 square miles (near 2,190 per square mile), Novi is spread out, with mostly detached homes on larger lots and longer runs between fixtures and the street. It is number 9 by population of the 79 Michigan places on our service list.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for Novi, MI.
Where We Go in Novi
From one side of Novi to the other (48374, 48375, 48376, 48377), plus nearby parts of Oakland County.
- 48374
- 48375
- 48376
- 48377
Nearby Cities We Serve
Tankless Water Heater Repair in Novi, MI: FAQs

Question not covered here?
Call and ask. Someone who repairs tankless units answers, and the phone quote is free.
Call (380) 273-8196How much does tankless water heater repair in Novi, MI cost?
Most repairs cost an estimated $150 to $800, depending on the part. Descaling alone is estimated at $150 to $350, and a heat exchanger at $1,000 to $2,500. On hard water, a descale often goes with the repair and sits on the same written quote.
Is there a reset button on a tankless water heater?
Many do it through power: switch the unit off, wait, switch it back on. That clears a code, but a code that comes back means a part needs attention.
Why is my tankless water heater not turning on?
Check for power at the outlet and that the gas valve is open. Beyond that it is usually low flow, a clogged inlet filter, a failed flow sensor or an ignition fault.
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.

Schedule a Tankless Visit in Novi
Call (380) 273-8196. Nothing is repaired until you have approved the written quote.
Talk to a Tankless Technician in Novi
Covering Novi
48374, 48375, 48376, 48377, and the neighboring parts of Oakland County.
More Michigan service areas