
Tankless Water Heater Repair in Lehi, UT
Tankless water heater repair in Lehi, UT 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 Lehi Homes
Lehi sits more than 4,000 feet up, with cold winters and hard water. Units need their altitude setting right, regular descaling and protected lines.
What we run into in Lehi
- Hard water. Scale is the slow problem in this area: it narrows the waterways, trips temperature limits and shortens the life of the exchanger if nobody flushes it.
- Altitude setting. Thinner air changes combustion. If the altitude setting was skipped at install, flame faults can follow the unit for years.
- Freeze damage. A hard freeze can split the pipes feeding a unit. Its built-in freeze protection only works while the unit still has power and gas.
From one side of Lehi to the other (84043), plus nearby parts of Utah County.
Call (380) 273-8196Tankless Problems We Fix Around Lehi
The list below covers what we find on most visits for tankless water heater repair in Lehi, UT, from ignition codes to drips under the cabinet.

Code 11, E003 or 111
A unit that clicks without lighting has an ignition, gas or venting fault, and each is checked in turn.

Drip from the cabinet
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.
Display is blank
No power at the outlet, a blown fuse or a failed control board.
Frozen after a cold night
Lines feeding the unit froze, or freeze protection lost power.
Error code keeps coming back
A reset only clears the symptom. Repeated ignition or exhaust codes need a visit.
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 Lehi
Most tankless faults are repairs, plain and simple. Replacement only makes sense when the heat exchanger has failed out of warranty or an electric unit is near the end of its shorter working life.
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 Lehi
A typical bill for tankless water heater repair in Lehi, UT is estimated at $150 to $800. These are estimates, not quotes, and an exchanger replacement sits higher at an estimated $1,000 to $2,500.
Diagnosis & code check
- Vent terminations looked over
- Flow, filter and venting checked
- A plain answer on what failed
Repairs & descaling
- Isolation valves added for flushing
- Igniter, flame rod or sensor replaced
- Unit run at full demand afterwards
Heat exchanger & major parts
- Fan motor or blower replaced
- Control board or gas valve replaced
- Combustion checked after the swap
Need Tankless Water Heater Repair in Lehi, UT? Call Now
Cold showers rarely fix themselves. Most units are back to full heat after one part and one visit.
Lehi Homes by the Numbers
In Lehi about 86% of homes are heated with gas, which makes gas-fired tankless units, and the gas pressure and venting problems that come with them, the common repair. Most homes in Lehi went up in recent decades (median year built 2007), which means newer venting and gas lines, and repairs that more often trace to scale or setup than to age. About 77% of homes are owner-occupied and about 85% are single-family, so most repair decisions here are the homeowner's own.
With about 81,039 residents on roughly 30 square miles (near 2,671 per square mile), Lehi is suburban in density, with a mix of detached homes and townhomes. It is number 10 by population of the 99 Utah places on our service list.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for Lehi, UT.
Where We Go in Lehi
From one side of Lehi to the other (84043), plus nearby parts of Utah County.
- 84043
Nearby Cities We Serve
Tankless Water Heater Repair in Lehi, UT: 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 Lehi, UT 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 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.
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.

Get Hot Water Back in Lehi
Call (380) 273-8196. Nothing is repaired until you have approved the written quote.