
Tankless Water Heater Repair in New London, TX
Searching for tankless water heater repair in New London, TX? Tell us the brand, the code and when it started. Most calls are a part or a descale, and you hear which on the phone.
- 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 New London Homes
Most New London homes are brick houses where the tankless sits in the garage or on an outside wall. The February 2021 freeze showed how fast exposed lines can split here.
What we run into in New London
- 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.
- Retrofit installs. Retrofits are common in this housing stock. When a unit throws flame codes only while the furnace or dryer runs, the gas supply is the first suspect.
New London and its ZIP codes (75682) are all inside our service area.
Call (380) 273-8196Tankless Problems We Fix Around New London
When people phone about tankless water heater repair in New London, TX, it is nearly always one of these problems. Each has a short list of causes.

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.
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.
LC code on a Rinnai
The unit is reporting scale buildup. It needs a descale, and soon.
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 New London
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.
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 New London
A typical bill for tankless water heater repair in New London, TX 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
- Flow, filter and venting checked
- A plain answer on what failed
- Vent terminations looked over
Repairs & descaling
- Heat exchanger descaled
- Igniter, flame rod or sensor replaced
- Flow sensor or thermistor swapped
Heat exchanger & major parts
- Honest word if a new unit is the better spend
- Control board or gas valve replaced
- Fan motor or blower replaced
Need Tankless Water Heater Repair in New London, TX? Call Today
Cold showers rarely fix themselves. Most units are back to full heat after one part and one visit.
New London Homes by the Numbers
In New London about 67% 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. Housing here is older (median year built 1968), and older homes were plumbed and vented for tank heaters, so tankless retrofits often meant new gas lines, venting or a condensate drain, which are common places for faults to start. Owners live in about 93% of New London homes (single-family about 83%), so the person who calls is usually the person who decides.
New London covers about 8.6 square miles and holds roughly 1,198 residents, around 139 per square mile: rural to small-town in density, with large lots and long runs. It is number 268 by population of the 322 Texas places on our service list.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for New London, TX.
New London Weather and Water Temperature
New London averages around 30 freezing nights a year, with a three-year low of about 2°F. That is enough cold for pipes in garages, crawl spaces and outside walls to get close to trouble on the worst nights, while most winters pass without damage.
Water arriving at a New London tap in winter is likely near 56°F (averages of about 46°F in January air and 66°F over the year). To reach 120°F a tankless unit must add roughly 64°F, which a 199,000 BTU gas model at 90% efficiency can do for about 5.6 gallons per minute. In July the water is nearer 76°F, so the same unit has to add only about 44°F and can supply about 8.2 gallons per minute.
Since a shower uses about 2 gallons per minute, that winter ceiling is why a heater that handles one shower easily can run lukewarm when a second shower and the dishwasher start. Lukewarm water at full demand is a limit of the design, not always a fault, whereas lukewarm water at a single tap points to scale, a sensor or an ignition problem.
At about 547 ft above sea level, New London is below the roughly 2,000 ft mark where manufacturers usually begin to adjust gas appliance ratings, so altitude is not a factor for most tankless units here.
Weather: NASA POWER daily temperatures, 2021-2023, for the grid cell around New London, TX, corrected to the town's elevation (USGS). Tap-water temperatures and flow rates are estimates, not measurements.
Where We Go in New London
New London and its ZIP codes (75682) are all inside our service area.
- 75682
Nearby Cities We Serve
Tankless Water Heater Repair in New London, TX: 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 New London, TX 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. Freeze repairs depend on what split, and are priced once the damage is seen.
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 buildup tops the list, then ignition trouble, then flow sensors and clogged inlet filters. In New London, cold nights add vent-cap, condensate-line and exposed-pipe problems to the usual list.
Can a tankless water heater be repaired?
Usually, yes. Nearly every part on a tankless unit can be replaced, and a scaled exchanger can be cleaned. The exception is an old unit whose heat exchanger has started to leak.

Schedule a Tankless Visit in New London
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.