
Tankless Water Heater Repair in Minnetonka, MN
Tankless water heater repair in Minnetonka, MN for units that flash a code, run lukewarm or quit halfway through a shower. Each suspect part is tested, then fixed at a price you agree first.
- Descaling through service valves
- Rinnai, Navien, Noritz, Rheem, Takagi
- Error history read first
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 Minnetonka Homes
In Minnetonka, basement installs are the norm, and the water is hard. Scale on the exchanger and frozen condensate lines are frequent calls.
What we run into in Minnetonka
- 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. Mineral-heavy water coats the exchanger a little more every month. Many repair visits here end with a descale as well, so the fix holds.
Every neighborhood in Minnetonka is covered, ZIPs 55345 included.
Call (380) 273-8196Tankless Problems We Fix Around Minnetonka
The list below covers what we find on most visits for tankless water heater repair in Minnetonka, MN, 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
Drips come from service valves, fittings, the relief valve, the condensate line or the heat exchanger itself.

Code 10 or E110
Venting codes mean the unit can't breathe: a blocked termination, a nest, snow or a vent run that's too long.
Error code keeps coming back
A reset only clears the symptom. Repeated ignition or exhaust codes need a visit.
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.
Not as hot as it used to be
Scale on the heat exchanger, a weak gas supply or a thermistor reading wrong.
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 Minnetonka
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.
Read the model and serial off the label and call (380) 273-8196. The age and the fault together usually settle repair versus replace on the phone.
Call (380) 273-8196Estimated Repair Costs in Minnetonka
Expect an estimated $150 to $800 for tankless water heater repair in Minnetonka, MN 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
- Stored error history read
- Vent terminations looked over
- A plain answer on what failed
Repairs & descaling
- Unit run at full demand afterwards
- Igniter, flame rod or sensor replaced
- Heat exchanger descaled
Heat exchanger & major parts
- Control board or gas valve replaced
- Leaking heat exchanger replaced
- Combustion checked after the swap
Need Tankless Water Heater Repair in Minnetonka, MN? Call Us Now
The sooner a fault is tested, the more likely it is a small part and not a big one.
Minnetonka Homes by the Numbers
Gas heats about 82% of homes in Minnetonka, so gas tankless units, with their vent runs and gas-line sizing, are the usual case on a call. The median home here dates from 1980, so tankless units are a mix of original-era installs and newer replacements, and an older unit that has never been descaled is a frequent find. About 72% of homes are owner-occupied and about 65% are single-family, so most repair decisions here are the homeowner's own.
With about 53,256 residents on roughly 27 square miles (near 1,978 per square mile), Minnetonka is spread out, with mostly detached homes on larger lots and longer runs between fixtures and the street. It is number 7 by population of the 96 Minnesota places on our service list.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for Minnetonka, MN.
Where We Go in Minnetonka
Every neighborhood in Minnetonka is covered, ZIPs 55345 included.
- 55345
Nearby Cities We Serve
Tankless Water Heater Repair in Minnetonka, MN: 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 Minnetonka, MN 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.
How long does a tankless water heater last?
A gas unit that is flushed regularly commonly lasts 20 years or longer. Electric tankless models usually give 7 to 10.
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.
Why does my tankless water heater go hot then cold?
A second or two of cold after the tap reopens is normal start-up. If the water swings while it runs, look at low flow, scale or the flow sensor.

Schedule a Tankless Visit in Minnetonka
A short call to (380) 273-8196, with the model and whatever the display shows, is usually all it takes to book.