
Tankless Water Heater Repair in Falls Church, VA
Looking for tankless water heater repair in Falls Church, VA? The unit's history is read, the gas, flow and venting are measured, and the part that failed is named before any money is spent.
- 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 Falls Church Homes
Most Falls Church homes keep the tankless in the basement or a utility room, with the vent through the side wall. Winter cold snaps and condensate drains cause the usual trouble.
What we run into in Falls Church
- Basement units. Many units here sit in the basement with PVC pipes venting out through the rim joist, and the condensate has to drain somewhere sensible.
- Freeze damage. Cold snaps do damage here when the power drops overnight. A frozen line or a cracked fitting under the unit is a repair we see after every deep freeze.
Every neighborhood in Falls Church is covered, ZIPs 22040, 22041, 22042, 22043, 22044, 22046 included.
Call (380) 273-8196Tankless Problems We Fix Around Falls Church
The list below covers what we find on most visits for tankless water heater repair in Falls Church, VA, from ignition codes to drips under the cabinet.

Unit won't light
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
An air or exhaust code stops the burner for safety. The intake and exhaust are cleared and checked.
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 Falls Church
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 Falls Church
Most tankless water heater repair in Falls Church, VA lands between an estimated $150 and $800 for parts and labor. A heat exchanger is the outlier, estimated at $1,000 to $2,500.
Diagnosis & code check
- A plain answer on what failed
- Stored error history read
- Flow, filter and venting checked
Repairs & descaling
- Heat exchanger descaled
- Unit run at full demand afterwards
- Igniter, flame rod or sensor replaced
Heat exchanger & major parts
- Control board or gas valve replaced
- Warranty part claimed where it applies
- Fan motor or blower replaced
Need Tankless Water Heater Repair in Falls Church, VA? Call Now
Cold showers rarely fix themselves. Most units are back to full heat after one part and one visit.
Falls Church Homes by the Numbers
Heating in Falls Church splits between gas (about 52% of homes) and electricity (about 46%), and tankless repairs follow the same split. With a median build year of 1971, many homes in Falls Church were set up for a tank heater, which means a tankless unit often depends on a retrofitted gas line, vent run or drain. Falls Church is about evenly split between owners (around 50%) and renters, so calls come from homeowners and from landlords and property managers alike.
Falls Church covers about 2.0 square miles and holds roughly 14,593 residents, around 7,119 per square mile: dense, with many repairs happening in shared buildings, basements and utility closets. Among the 85 Virginia places we cover, it ranks number 34 by population.
Source: U.S. Census Bureau, American Community Survey 2019-2023 5-year estimates for Falls Church, VA.
Where We Go in Falls Church
Every neighborhood in Falls Church is covered, ZIPs 22040, 22041, 22042, 22043, 22044, 22046 included.
- 22040
- 22041
- 22042
- 22043
- 22044
- 22046
Nearby Cities We Serve
Tankless Water Heater Repair in Falls Church, VA: 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 Falls Church, VA 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.
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.
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.
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.

Schedule a Tankless Visit in Falls Church
(380) 273-8196 reaches someone who works on tankless units every day. Describe the problem and pick a time.
Talk to a Tankless Technician in Falls Church
Covering Falls Church
22040, 22041, 22042, 22043, 22044, 22046, and the neighboring parts of Falls Church City.
More Virginia service areas